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-rw-r--r--tools/profiler/public/ChildProfilerController.h71
-rw-r--r--tools/profiler/public/GeckoProfiler.h435
-rw-r--r--tools/profiler/public/GeckoProfilerReporter.h26
-rw-r--r--tools/profiler/public/GeckoTraceEvent.h1060
-rw-r--r--tools/profiler/public/MicroGeckoProfiler.h130
-rw-r--r--tools/profiler/public/ProfileAdditionalInformation.h90
-rw-r--r--tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h160
-rw-r--r--tools/profiler/public/ProfileJSONWriter.h19
-rw-r--r--tools/profiler/public/ProfilerBindings.h162
-rw-r--r--tools/profiler/public/ProfilerChild.h106
-rw-r--r--tools/profiler/public/ProfilerCodeAddressService.h52
-rw-r--r--tools/profiler/public/ProfilerControl.h190
-rw-r--r--tools/profiler/public/ProfilerCounts.h296
-rw-r--r--tools/profiler/public/ProfilerLabels.h268
-rw-r--r--tools/profiler/public/ProfilerMarkerTypes.h41
-rw-r--r--tools/profiler/public/ProfilerMarkers.h355
-rw-r--r--tools/profiler/public/ProfilerMarkersDetail.h31
-rw-r--r--tools/profiler/public/ProfilerMarkersPrerequisites.h31
-rw-r--r--tools/profiler/public/ProfilerParent.h119
-rw-r--r--tools/profiler/public/ProfilerRunnable.h68
-rw-r--r--tools/profiler/public/ProfilerRustBindings.h12
-rw-r--r--tools/profiler/public/ProfilerState.h399
-rw-r--r--tools/profiler/public/ProfilerThreadPlatformData.h80
-rw-r--r--tools/profiler/public/ProfilerThreadRegistration.h367
-rw-r--r--tools/profiler/public/ProfilerThreadRegistrationData.h537
-rw-r--r--tools/profiler/public/ProfilerThreadRegistrationInfo.h64
-rw-r--r--tools/profiler/public/ProfilerThreadRegistry.h321
-rw-r--r--tools/profiler/public/ProfilerThreadSleep.h58
-rw-r--r--tools/profiler/public/ProfilerThreadState.h128
-rw-r--r--tools/profiler/public/ProfilerUtils.h32
-rw-r--r--tools/profiler/public/shared-libraries.h213
31 files changed, 5921 insertions, 0 deletions
diff --git a/tools/profiler/public/ChildProfilerController.h b/tools/profiler/public/ChildProfilerController.h
new file mode 100644
index 0000000000..8febc25b65
--- /dev/null
+++ b/tools/profiler/public/ChildProfilerController.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ChildProfilerController_h
+#define ChildProfilerController_h
+
+#include "base/process.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/RefPtr.h"
+#include "nsISupportsImpl.h"
+#include "nsStringFwd.h"
+#include "ProfileAdditionalInformation.h"
+
+namespace mozilla {
+
+class ProfilerChild;
+class PProfilerChild;
+class PProfilerParent;
+
+// ChildProfilerController manages the setup and teardown of ProfilerChild.
+// It's used on the main thread.
+// It manages a background thread that ProfilerChild runs on.
+class ChildProfilerController final {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ChildProfilerController)
+
+#ifdef MOZ_GECKO_PROFILER
+ static already_AddRefed<ChildProfilerController> Create(
+ mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+
+ [[nodiscard]] ProfileAndAdditionalInformation
+ GrabShutdownProfileAndShutdown();
+ void Shutdown();
+
+ private:
+ ChildProfilerController();
+ ~ChildProfilerController();
+ void Init(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+ void ShutdownAndMaybeGrabShutdownProfileFirst(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation);
+
+ // Called on mThread:
+ void SetupProfilerChild(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+ void ShutdownProfilerChild(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation);
+
+ RefPtr<ProfilerChild> mProfilerChild; // only accessed on mThread
+ DataMutex<RefPtr<nsIThread>> mThread;
+#else
+ static already_AddRefed<ChildProfilerController> Create(
+ mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint) {
+ return nullptr;
+ }
+ [[nodiscard]] ProfileAndAdditionalInformation
+ GrabShutdownProfileAndShutdown() {
+ return ProfileAndAdditionalInformation(std::move(EmptyCString()));
+ }
+ void Shutdown() {}
+
+ private:
+ ~ChildProfilerController() {}
+#endif // MOZ_GECKO_PROFILER
+};
+
+} // namespace mozilla
+
+#endif // ChildProfilerController_h
diff --git a/tools/profiler/public/GeckoProfiler.h b/tools/profiler/public/GeckoProfiler.h
new file mode 100644
index 0000000000..f7c045297e
--- /dev/null
+++ b/tools/profiler/public/GeckoProfiler.h
@@ -0,0 +1,435 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// The Gecko Profiler is an always-on profiler that takes fast and low overhead
+// samples of the program execution using only userspace functionality for
+// portability. The goal of this module is to provide performance data in a
+// generic cross-platform way without requiring custom tools or kernel support.
+//
+// Samples are collected to form a timeline with optional timeline event
+// (markers) used for filtering. The samples include both native stacks and
+// platform-independent "label stack" frames.
+
+#ifndef GeckoProfiler_h
+#define GeckoProfiler_h
+
+// Everything in here is also safe to include unconditionally, and only defines
+// empty macros if MOZ_GECKO_PROFILER is unset.
+// If your file only uses particular APIs (e.g., only markers), please consider
+// including only the needed headers instead of this one, to reduce compilation
+// dependencies.
+#include "BaseProfiler.h"
+#include "ProfileAdditionalInformation.h"
+#include "mozilla/ProfilerCounts.h"
+#include "mozilla/ProfilerLabels.h"
+#include "mozilla/ProfilerMarkers.h"
+#include "mozilla/ProfilerState.h"
+#include "mozilla/ProfilerThreadSleep.h"
+#include "mozilla/ProfilerThreadState.h"
+#include "mozilla/ProgressLogger.h"
+#include "mozilla/Result.h"
+#include "mozilla/ResultVariant.h"
+
+#ifndef MOZ_GECKO_PROFILER
+
+# include "mozilla/UniquePtr.h"
+
+// This file can be #included unconditionally. However, everything within this
+// file must be guarded by a #ifdef MOZ_GECKO_PROFILER, *except* for the
+// following macros and functions, which encapsulate the most common operations
+// and thus avoid the need for many #ifdefs.
+
+# define PROFILER_REGISTER_THREAD(name)
+# define PROFILER_UNREGISTER_THREAD()
+# define AUTO_PROFILER_REGISTER_THREAD(name)
+
+# define PROFILER_JS_INTERRUPT_CALLBACK()
+
+# define PROFILER_SET_JS_CONTEXT(cx)
+# define PROFILER_CLEAR_JS_CONTEXT()
+
+// Function stubs for when MOZ_GECKO_PROFILER is not defined.
+
+// This won't be used, it's just there to allow the empty definition of
+// `profiler_get_backtrace`.
+struct ProfilerBacktrace {};
+using UniqueProfilerBacktrace = mozilla::UniquePtr<ProfilerBacktrace>;
+
+// Get/Capture-backtrace functions can return nullptr or false, the result
+// should be fed to another empty macro or stub anyway.
+
+static inline UniqueProfilerBacktrace profiler_get_backtrace() {
+ return nullptr;
+}
+
+// This won't be used, it's just there to allow the empty definitions of
+// `profiler_capture_backtrace_into` and `profiler_capture_backtrace`.
+struct ProfileChunkedBuffer {};
+
+static inline bool profiler_capture_backtrace_into(
+ mozilla::ProfileChunkedBuffer& aChunkedBuffer,
+ mozilla::StackCaptureOptions aCaptureOptions) {
+ return false;
+}
+static inline mozilla::UniquePtr<mozilla::ProfileChunkedBuffer>
+profiler_capture_backtrace() {
+ return nullptr;
+}
+
+static inline void profiler_set_process_name(
+ const nsACString& aProcessName, const nsACString* aETLDplus1 = nullptr) {}
+
+static inline void profiler_received_exit_profile(
+ const nsACString& aExitProfile) {}
+
+static inline void profiler_register_page(uint64_t aTabID,
+ uint64_t aInnerWindowID,
+ const nsCString& aUrl,
+ uint64_t aEmbedderInnerWindowID,
+ bool aIsPrivateBrowsing) {}
+static inline void profiler_unregister_page(uint64_t aRegisteredInnerWindowID) {
+}
+
+static inline void GetProfilerEnvVarsForChildProcess(
+ std::function<void(const char* key, const char* value)>&& aSetEnv) {}
+
+static inline void profiler_record_wakeup_count(
+ const nsACString& aProcessType) {}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "js/ProfilingStack.h"
+# include "mozilla/Assertions.h"
+# include "mozilla/Atomics.h"
+# include "mozilla/Attributes.h"
+# include "mozilla/BaseProfilerRAIIMacro.h"
+# include "mozilla/Maybe.h"
+# include "mozilla/PowerOfTwo.h"
+# include "mozilla/ThreadLocal.h"
+# include "mozilla/TimeStamp.h"
+# include "mozilla/UniquePtr.h"
+# include "nscore.h"
+# include "nsINamed.h"
+# include "nsString.h"
+# include "nsThreadUtils.h"
+
+# include <functional>
+# include <stdint.h>
+
+class ProfilerBacktrace;
+class ProfilerCodeAddressService;
+struct JSContext;
+
+namespace mozilla {
+class ProfileBufferControlledChunkManager;
+class ProfileChunkedBuffer;
+namespace baseprofiler {
+class SpliceableJSONWriter;
+} // namespace baseprofiler
+} // namespace mozilla
+class nsIURI;
+
+enum class ProfilerError {
+ IsInactive,
+ JsonGenerationFailed,
+};
+
+template <typename T>
+using ProfilerResult = mozilla::Result<T, ProfilerError>;
+
+//---------------------------------------------------------------------------
+// Give information to the profiler
+//---------------------------------------------------------------------------
+
+// Register/unregister threads with the profiler. Both functions operate the
+// same whether the profiler is active or inactive.
+# define PROFILER_REGISTER_THREAD(name) \
+ do { \
+ char stackTop; \
+ profiler_register_thread(name, &stackTop); \
+ } while (0)
+# define PROFILER_UNREGISTER_THREAD() profiler_unregister_thread()
+ProfilingStack* profiler_register_thread(const char* name, void* guessStackTop);
+void profiler_unregister_thread();
+
+// Registers a DOM Window (the JS global `window`) with the profiler. Each
+// Window _roughly_ corresponds to a single document loaded within a
+// browsing context. Both the Window Id and Browser Id are recorded to allow
+// correlating different Windows loaded within the same tab or frame element.
+//
+// We register pages for each navigations but we do not register
+// history.pushState or history.replaceState since they correspond to the same
+// Inner Window ID. When a browsing context is first loaded, the first url
+// loaded in it will be about:blank. Because of that, this call keeps the first
+// non-about:blank registration of window and discards the previous one.
+//
+// "aTabID" is the BrowserId of that document belongs to.
+// That's used to determine the tab of that page.
+// "aInnerWindowID" is the ID of the `window` global object of that
+// document.
+// "aUrl" is the URL of the page.
+// "aEmbedderInnerWindowID" is the inner window id of embedder. It's used to
+// determine sub documents of a page.
+// "aIsPrivateBrowsing" is true if this browsing context happens in a
+// private browsing context.
+void profiler_register_page(uint64_t aTabID, uint64_t aInnerWindowID,
+ const nsCString& aUrl,
+ uint64_t aEmbedderInnerWindowID,
+ bool aIsPrivateBrowsing);
+// Unregister page with the profiler.
+//
+// Take a Inner Window ID and unregister the page entry that has the same ID.
+void profiler_unregister_page(uint64_t aRegisteredInnerWindowID);
+
+// Remove all registered and unregistered pages in the profiler.
+void profiler_clear_all_pages();
+
+class BaseProfilerCount;
+void profiler_add_sampled_counter(BaseProfilerCount* aCounter);
+void profiler_remove_sampled_counter(BaseProfilerCount* aCounter);
+
+// Register and unregister a thread within a scope.
+# define AUTO_PROFILER_REGISTER_THREAD(name) \
+ mozilla::AutoProfilerRegisterThread PROFILER_RAII(name)
+
+enum class SamplingState {
+ JustStopped, // Sampling loop has just stopped without sampling, between the
+ // callback registration and now.
+ SamplingPaused, // Profiler is active but sampling loop has gone through a
+ // pause.
+ NoStackSamplingCompleted, // A full sampling loop has completed in
+ // no-stack-sampling mode.
+ SamplingCompleted // A full sampling loop has completed.
+};
+
+using PostSamplingCallback = std::function<void(SamplingState)>;
+
+// Install a callback to be invoked at the end of the next sampling loop.
+// - `false` if profiler is not active, `aCallback` will stay untouched.
+// - `true` if `aCallback` was successfully moved-from into internal storage,
+// and *will* be invoked at the end of the next sampling cycle. Note that this
+// will happen on the Sampler thread, and will block further sampling, so
+// please be mindful not to block for a long time (e.g., just dispatch a
+// runnable to another thread.) Calling profiler functions from the callback
+// is allowed.
+[[nodiscard]] bool profiler_callback_after_sampling(
+ PostSamplingCallback&& aCallback);
+
+// Called by the JSRuntime's operation callback. This is used to start profiling
+// on auxiliary threads. Operates the same whether the profiler is active or
+// not.
+# define PROFILER_JS_INTERRUPT_CALLBACK() profiler_js_interrupt_callback()
+void profiler_js_interrupt_callback();
+
+// Set and clear the current thread's JSContext.
+# define PROFILER_SET_JS_CONTEXT(cx) profiler_set_js_context(cx)
+# define PROFILER_CLEAR_JS_CONTEXT() profiler_clear_js_context()
+void profiler_set_js_context(JSContext* aCx);
+void profiler_clear_js_context();
+
+//---------------------------------------------------------------------------
+// Get information from the profiler
+//---------------------------------------------------------------------------
+
+// Get the chunk manager used in the current profiling session, or null.
+mozilla::ProfileBufferControlledChunkManager*
+profiler_get_controlled_chunk_manager();
+
+// The number of milliseconds since the process started. Operates the same
+// whether the profiler is active or inactive.
+double profiler_time();
+
+// An object of this class is passed to profiler_suspend_and_sample_thread().
+// For each stack frame, one of the Collect methods will be called.
+class ProfilerStackCollector {
+ public:
+ // Some collectors need to worry about possibly overwriting previous
+ // generations of data. If that's not an issue, this can return Nothing,
+ // which is the default behaviour.
+ virtual mozilla::Maybe<uint64_t> SamplePositionInBuffer() {
+ return mozilla::Nothing();
+ }
+ virtual mozilla::Maybe<uint64_t> BufferRangeStart() {
+ return mozilla::Nothing();
+ }
+
+ // This method will be called once if the thread being suspended is the main
+ // thread. Default behaviour is to do nothing.
+ virtual void SetIsMainThread() {}
+
+ // WARNING: The target thread is suspended when the Collect methods are
+ // called. Do not try to allocate or acquire any locks, or you could
+ // deadlock. The target thread will have resumed by the time this function
+ // returns.
+
+ virtual void CollectNativeLeafAddr(void* aAddr) = 0;
+
+ virtual void CollectJitReturnAddr(void* aAddr) = 0;
+
+ virtual void CollectWasmFrame(const char* aLabel) = 0;
+
+ virtual void CollectProfilingStackFrame(
+ const js::ProfilingStackFrame& aFrame) = 0;
+};
+
+// This method suspends the thread identified by aThreadId, samples its
+// profiling stack, JS stack, and (optionally) native stack, passing the
+// collected frames into aCollector. aFeatures dictates which compiler features
+// are used. |Leaf| is the only relevant one.
+// Use `ProfilerThreadId{}` (unspecified) to sample the current thread.
+void profiler_suspend_and_sample_thread(ProfilerThreadId aThreadId,
+ uint32_t aFeatures,
+ ProfilerStackCollector& aCollector,
+ bool aSampleNative = true);
+
+struct ProfilerBacktraceDestructor {
+ void operator()(ProfilerBacktrace*);
+};
+
+using UniqueProfilerBacktrace =
+ mozilla::UniquePtr<ProfilerBacktrace, ProfilerBacktraceDestructor>;
+
+// Immediately capture the current thread's call stack, store it in the provided
+// buffer (usually to avoid allocations if you can construct the buffer on the
+// stack). Returns false if unsuccessful, or if the profiler is inactive.
+bool profiler_capture_backtrace_into(
+ mozilla::ProfileChunkedBuffer& aChunkedBuffer,
+ mozilla::StackCaptureOptions aCaptureOptions);
+
+// Immediately capture the current thread's call stack, and return it in a
+// ProfileChunkedBuffer (usually for later use in MarkerStack::TakeBacktrace()).
+// May be null if unsuccessful, or if the profiler is inactive.
+mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> profiler_capture_backtrace();
+
+// Immediately capture the current thread's call stack, and return it in a
+// ProfilerBacktrace (usually for later use in marker function that take a
+// ProfilerBacktrace). May be null if unsuccessful, or if the profiler is
+// inactive.
+UniqueProfilerBacktrace profiler_get_backtrace();
+
+struct ProfilerStats {
+ unsigned n = 0;
+ double sum = 0;
+ double min = std::numeric_limits<double>::max();
+ double max = 0;
+ void Count(double v) {
+ ++n;
+ sum += v;
+ if (v < min) {
+ min = v;
+ }
+ if (v > max) {
+ max = v;
+ }
+ }
+};
+
+struct ProfilerBufferInfo {
+ // Index of the oldest entry.
+ uint64_t mRangeStart;
+ // Index of the newest entry.
+ uint64_t mRangeEnd;
+ // Buffer capacity in number of 8-byte entries.
+ uint32_t mEntryCount;
+ // Sampling stats: Interval between successive samplings.
+ ProfilerStats mIntervalsUs;
+ // Sampling stats: Total sampling duration. (Split detail below.)
+ ProfilerStats mOverheadsUs;
+ // Sampling stats: Time to acquire the lock before sampling.
+ ProfilerStats mLockingsUs;
+ // Sampling stats: Time to discard expired data.
+ ProfilerStats mCleaningsUs;
+ // Sampling stats: Time to collect counter data.
+ ProfilerStats mCountersUs;
+ // Sampling stats: Time to sample thread stacks.
+ ProfilerStats mThreadsUs;
+};
+
+// Get information about the current buffer status.
+// Returns Nothing() if the profiler is inactive.
+//
+// This information may be useful to a user-interface displaying the current
+// status of the profiler, allowing the user to get a sense for how fast the
+// buffer is being written to, and how much data is visible.
+mozilla::Maybe<ProfilerBufferInfo> profiler_get_buffer_info();
+
+// Record through glean how many times profiler_thread_wake has been
+// called.
+void profiler_record_wakeup_count(const nsACString& aProcessType);
+
+//---------------------------------------------------------------------------
+// Output profiles
+//---------------------------------------------------------------------------
+
+// Set a user-friendly process name, used in JSON stream. Allows an optional
+// detailed name which may include private info (eTLD+1 in fission)
+void profiler_set_process_name(const nsACString& aProcessName,
+ const nsACString* aETLDplus1 = nullptr);
+
+// Record an exit profile from a child process.
+void profiler_received_exit_profile(const nsACString& aExitProfile);
+
+// Get the profile encoded as a JSON string. A no-op (returning nullptr) if the
+// profiler is inactive.
+// If aIsShuttingDown is true, the current time is included as the process
+// shutdown time in the JSON's "meta" object.
+mozilla::UniquePtr<char[]> profiler_get_profile(double aSinceTime = 0,
+ bool aIsShuttingDown = false);
+
+// Write the profile for this process (excluding subprocesses) into aWriter.
+// Returns a failed result if the profiler is inactive.
+ProfilerResult<mozilla::ProfileGenerationAdditionalInformation>
+profiler_stream_json_for_this_process(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter, double aSinceTime = 0,
+ bool aIsShuttingDown = false,
+ ProfilerCodeAddressService* aService = nullptr,
+ mozilla::ProgressLogger aProgressLogger = {});
+
+// Get the profile and write it into a file. A no-op if the profile is
+// inactive.
+//
+// This function is 'extern "C"' so that it is easily callable from a debugger
+// in a build without debugging information (a workaround for
+// http://llvm.org/bugs/show_bug.cgi?id=22211).
+extern "C" {
+void profiler_save_profile_to_file(const char* aFilename);
+}
+
+//---------------------------------------------------------------------------
+// RAII classes
+//---------------------------------------------------------------------------
+
+namespace mozilla {
+
+// Convenience class to register and unregister a thread with the profiler.
+// Needs to be the first object on the stack of the thread.
+class MOZ_RAII AutoProfilerRegisterThread final {
+ public:
+ explicit AutoProfilerRegisterThread(const char* aName) {
+ profiler_register_thread(aName, this);
+ }
+
+ ~AutoProfilerRegisterThread() { profiler_unregister_thread(); }
+
+ private:
+ AutoProfilerRegisterThread(const AutoProfilerRegisterThread&) = delete;
+ AutoProfilerRegisterThread& operator=(const AutoProfilerRegisterThread&) =
+ delete;
+};
+
+// Get the MOZ_PROFILER_STARTUP* environment variables that should be
+// supplied to a child process that is about to be launched, in order
+// to make that child process start with the same profiler settings as
+// in the current process. The given function is invoked once for
+// each variable to be set.
+void GetProfilerEnvVarsForChildProcess(
+ std::function<void(const char* key, const char* value)>&& aSetEnv);
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // GeckoProfiler_h
diff --git a/tools/profiler/public/GeckoProfilerReporter.h b/tools/profiler/public/GeckoProfilerReporter.h
new file mode 100644
index 0000000000..f5bf41f223
--- /dev/null
+++ b/tools/profiler/public/GeckoProfilerReporter.h
@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GeckoProfilerReporter_h
+#define GeckoProfilerReporter_h
+
+#include "nsIMemoryReporter.h"
+
+class GeckoProfilerReporter final : public nsIMemoryReporter {
+ public:
+ NS_DECL_ISUPPORTS
+
+ GeckoProfilerReporter() {}
+
+ NS_IMETHOD
+ CollectReports(nsIHandleReportCallback* aHandleReport, nsISupports* aData,
+ bool aAnonymize) override;
+
+ private:
+ ~GeckoProfilerReporter() {}
+};
+
+#endif
diff --git a/tools/profiler/public/GeckoTraceEvent.h b/tools/profiler/public/GeckoTraceEvent.h
new file mode 100644
index 0000000000..75affaf9c8
--- /dev/null
+++ b/tools/profiler/public/GeckoTraceEvent.h
@@ -0,0 +1,1060 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file under third_party_mods/chromium or at:
+// http://src.chromium.org/svn/trunk/src/LICENSE
+
+#ifndef GECKO_TRACE_EVENT_H_
+#define GECKO_TRACE_EVENT_H_
+
+#include "MicroGeckoProfiler.h"
+
+// Extracted from Chromium's src/base/debug/trace_event.h, modified to talk to
+// the Gecko profiler.
+
+#if defined(RTC_DISABLE_TRACE_EVENTS)
+# define RTC_TRACE_EVENTS_ENABLED 0
+#else
+# define RTC_TRACE_EVENTS_ENABLED 1
+#endif
+
+// Type values for identifying types in the TraceValue union.
+#define TRACE_VALUE_TYPE_BOOL (static_cast<unsigned char>(1))
+#define TRACE_VALUE_TYPE_UINT (static_cast<unsigned char>(2))
+#define TRACE_VALUE_TYPE_INT (static_cast<unsigned char>(3))
+#define TRACE_VALUE_TYPE_DOUBLE (static_cast<unsigned char>(4))
+#define TRACE_VALUE_TYPE_POINTER (static_cast<unsigned char>(5))
+#define TRACE_VALUE_TYPE_STRING (static_cast<unsigned char>(6))
+#define TRACE_VALUE_TYPE_COPY_STRING (static_cast<unsigned char>(7))
+
+#if RTC_TRACE_EVENTS_ENABLED
+
+// This header is designed to give you trace_event macros without specifying
+// how the events actually get collected and stored. If you need to expose trace
+// event to some other universe, you can copy-and-paste this file,
+// implement the TRACE_EVENT_API macros, and do any other necessary fixup for
+// the target platform. The end result is that multiple libraries can funnel
+// events through to a shared trace event collector.
+
+// Trace events are for tracking application performance and resource usage.
+// Macros are provided to track:
+// Begin and end of function calls
+// Counters
+//
+// Events are issued against categories. Whereas RTC_LOG's
+// categories are statically defined, TRACE categories are created
+// implicitly with a string. For example:
+// TRACE_EVENT_INSTANT0("MY_SUBSYSTEM", "SomeImportantEvent")
+//
+// Events can be INSTANT, or can be pairs of BEGIN and END in the same scope:
+// TRACE_EVENT_BEGIN0("MY_SUBSYSTEM", "SomethingCostly")
+// doSomethingCostly()
+// TRACE_EVENT_END0("MY_SUBSYSTEM", "SomethingCostly")
+// Note: our tools can't always determine the correct BEGIN/END pairs unless
+// these are used in the same scope. Use ASYNC_BEGIN/ASYNC_END macros if you
+// need them to be in separate scopes.
+//
+// A common use case is to trace entire function scopes. This
+// issues a trace BEGIN and END automatically:
+// void doSomethingCostly() {
+// TRACE_EVENT0("MY_SUBSYSTEM", "doSomethingCostly");
+// ...
+// }
+//
+// Additional parameters can be associated with an event:
+// void doSomethingCostly2(int howMuch) {
+// TRACE_EVENT1("MY_SUBSYSTEM", "doSomethingCostly",
+// "howMuch", howMuch);
+// ...
+// }
+//
+// The trace system will automatically add to this information the
+// current process id, thread id, and a timestamp in microseconds.
+//
+// To trace an asynchronous procedure such as an IPC send/receive, use
+// ASYNC_BEGIN and ASYNC_END:
+// [single threaded sender code]
+// static int send_count = 0;
+// ++send_count;
+// TRACE_EVENT_ASYNC_BEGIN0("ipc", "message", send_count);
+// Send(new MyMessage(send_count));
+// [receive code]
+// void OnMyMessage(send_count) {
+// TRACE_EVENT_ASYNC_END0("ipc", "message", send_count);
+// }
+// The third parameter is a unique ID to match ASYNC_BEGIN/ASYNC_END pairs.
+// ASYNC_BEGIN and ASYNC_END can occur on any thread of any traced process.
+// Pointers can be used for the ID parameter, and they will be mangled
+// internally so that the same pointer on two different processes will not
+// match. For example:
+// class MyTracedClass {
+// public:
+// MyTracedClass() {
+// TRACE_EVENT_ASYNC_BEGIN0("category", "MyTracedClass", this);
+// }
+// ~MyTracedClass() {
+// TRACE_EVENT_ASYNC_END0("category", "MyTracedClass", this);
+// }
+// }
+//
+// Trace event also supports counters, which is a way to track a quantity
+// as it varies over time. Counters are created with the following macro:
+// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter", g_myCounterValue);
+//
+// Counters are process-specific. The macro itself can be issued from any
+// thread, however.
+//
+// Sometimes, you want to track two counters at once. You can do this with two
+// counter macros:
+// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter0", g_myCounterValue[0]);
+// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter1", g_myCounterValue[1]);
+// Or you can do it with a combined macro:
+// TRACE_COUNTER2("MY_SUBSYSTEM", "myCounter",
+// "bytesPinned", g_myCounterValue[0],
+// "bytesAllocated", g_myCounterValue[1]);
+// This indicates to the tracing UI that these counters should be displayed
+// in a single graph, as a summed area chart.
+//
+// Since counters are in a global namespace, you may want to disembiguate with a
+// unique ID, by using the TRACE_COUNTER_ID* variations.
+//
+// By default, trace collection is compiled in, but turned off at runtime.
+// Collecting trace data is the responsibility of the embedding
+// application. In Chrome's case, navigating to about:tracing will turn on
+// tracing and display data collected across all active processes.
+//
+//
+// Memory scoping note:
+// Tracing copies the pointers, not the string content, of the strings passed
+// in for category, name, and arg_names. Thus, the following code will
+// cause problems:
+// char* str = strdup("impprtantName");
+// TRACE_EVENT_INSTANT0("SUBSYSTEM", str); // BAD!
+// free(str); // Trace system now has dangling pointer
+//
+// To avoid this issue with the `name` and `arg_name` parameters, use the
+// TRACE_EVENT_COPY_XXX overloads of the macros at additional runtime overhead.
+// Notes: The category must always be in a long-lived char* (i.e. static const).
+// The `arg_values`, when used, are always deep copied with the _COPY
+// macros.
+//
+// When are string argument values copied:
+// const char* arg_values are only referenced by default:
+// TRACE_EVENT1("category", "name",
+// "arg1", "literal string is only referenced");
+// Use TRACE_STR_COPY to force copying of a const char*:
+// TRACE_EVENT1("category", "name",
+// "arg1", TRACE_STR_COPY("string will be copied"));
+// std::string arg_values are always copied:
+// TRACE_EVENT1("category", "name",
+// "arg1", std::string("string will be copied"));
+//
+//
+// Thread Safety:
+// Thread safety is provided by methods defined in event_tracer.h. See the file
+// for details.
+
+// By default, const char* argument values are assumed to have long-lived scope
+// and will not be copied. Use this macro to force a const char* to be copied.
+# define TRACE_STR_COPY(str) \
+ webrtc::trace_event_internal::TraceStringWithCopy(str)
+
+// This will mark the trace event as disabled by default. The user will need
+// to explicitly enable the event.
+# define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name
+
+// By default, uint64 ID argument values are not mangled with the Process ID in
+// TRACE_EVENT_ASYNC macros. Use this macro to force Process ID mangling.
+# define TRACE_ID_MANGLE(id) \
+ webrtc::trace_event_internal::TraceID::ForceMangle(id)
+
+// Records a pair of begin and end events called "name" for the current
+// scope, with 0, 1 or 2 associated arguments. If the category is not
+// enabled, then this does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name)
+# define TRACE_EVENT1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, arg1_name, arg1_val)
+# define TRACE_EVENT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records a single event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT_INSTANT0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val)
+# define TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_INSTANT0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_INSTANT1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_INSTANT2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records a single BEGIN event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT_BEGIN0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_BEGIN1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val)
+# define TRACE_EVENT_BEGIN2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_BEGIN0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_BEGIN1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_BEGIN2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records a single END event for "name" immediately. If the category
+// is not enabled, then this does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT_END0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_END1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val)
+# define TRACE_EVENT_END2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_END0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_END1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_END2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records the value of a counter called "name" immediately. Value
+// must be representable as a 32 bit integer.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_COUNTER1(category, name, value) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_NONE, "value", \
+ static_cast<int>(value))
+# define TRACE_COPY_COUNTER1(category, name, value) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_COPY, "value", \
+ static_cast<int>(value))
+
+// Records the values of a multi-parted counter called "name" immediately.
+// The UI will treat value1 and value2 as parts of a whole, displaying their
+// values as a stacked-bar chart.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_COUNTER2(category, name, value1_name, value1_val, value2_name, \
+ value2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_NONE, value1_name, \
+ static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+# define TRACE_COPY_COUNTER2(category, name, value1_name, value1_val, \
+ value2_name, value2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_COPY, value1_name, \
+ static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+
+// Records the value of a counter called "name" immediately. Value
+// must be representable as a 32 bit integer.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to disambiguate counters with the same name. It must either
+// be a pointer or an integer value up to 64 bits. If it's a pointer, the bits
+// will be xored with a hash of the process ID so that the same pointer on
+// two different processes will not collide.
+# define TRACE_COUNTER_ID1(category, name, id, value) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "value", \
+ static_cast<int>(value))
+# define TRACE_COPY_COUNTER_ID1(category, name, id, value) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "value", \
+ static_cast<int>(value))
+
+// Records the values of a multi-parted counter called "name" immediately.
+// The UI will treat value1 and value2 as parts of a whole, displaying their
+// values as a stacked-bar chart.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to disambiguate counters with the same name. It must either
+// be a pointer or an integer value up to 64 bits. If it's a pointer, the bits
+// will be xored with a hash of the process ID so that the same pointer on
+// two different processes will not collide.
+# define TRACE_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID( \
+ TRACE_EVENT_PHASE_COUNTER, category, name, id, TRACE_EVENT_FLAG_NONE, \
+ value1_name, static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+# define TRACE_COPY_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID( \
+ TRACE_EVENT_PHASE_COUNTER, category, name, id, TRACE_EVENT_FLAG_COPY, \
+ value1_name, static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+
+// Records a single ASYNC_BEGIN event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to match the ASYNC_BEGIN event with the ASYNC_END event. ASYNC
+// events are considered to match if their category, name and id values all
+// match. `id` must either be a pointer or an integer value up to 64 bits. If
+// it's a pointer, the bits will be xored with a hash of the process ID so
+// that the same pointer on two different processes will not collide.
+// An asynchronous operation can consist of multiple phases. The first phase is
+// defined by the ASYNC_BEGIN calls. Additional phases can be defined using the
+// ASYNC_STEP macros. When the operation completes, call ASYNC_END.
+// An ASYNC trace typically occur on a single thread (if not, they will only be
+// drawn on the thread defined in the ASYNC_BEGIN event), but all events in that
+// operation must use the same `name` and `id`. Each event can have its own
+// args.
+# define TRACE_EVENT_ASYNC_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_ASYNC_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_ASYNC_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_ASYNC_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+// Records a single ASYNC_STEP event for `step` immediately. If the category
+// is not enabled, then this does nothing. The `name` and `id` must match the
+// ASYNC_BEGIN event above. The `step` param identifies this step within the
+// async event. This should be called at the beginning of the next phase of an
+// asynchronous operation.
+# define TRACE_EVENT_ASYNC_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step)
+# define TRACE_EVENT_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_ASYNC_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step)
+# define TRACE_EVENT_COPY_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step, arg1_name, arg1_val)
+
+// Records a single ASYNC_END event for "name" immediately. If the category
+// is not enabled, then this does nothing.
+# define TRACE_EVENT_ASYNC_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_ASYNC_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+// Records a single FLOW_BEGIN event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to match the FLOW_BEGIN event with the FLOW_END event. FLOW
+// events are considered to match if their category, name and id values all
+// match. `id` must either be a pointer or an integer value up to 64 bits. If
+// it's a pointer, the bits will be xored with a hash of the process ID so
+// that the same pointer on two different processes will not collide.
+// FLOW events are different from ASYNC events in how they are drawn by the
+// tracing UI. A FLOW defines asynchronous data flow, such as posting a task
+// (FLOW_BEGIN) and later executing that task (FLOW_END). Expect FLOWs to be
+// drawn as lines or arrows from FLOW_BEGIN scopes to FLOW_END scopes. Similar
+// to ASYNC, a FLOW can consist of multiple phases. The first phase is defined
+// by the FLOW_BEGIN calls. Additional phases can be defined using the FLOW_STEP
+// macros. When the operation completes, call FLOW_END. An async operation can
+// span threads and processes, but all events in that operation must use the
+// same `name` and `id`. Each event can have its own args.
+# define TRACE_EVENT_FLOW_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_FLOW_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_FLOW_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_FLOW_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_FLOW_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_FLOW_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+// Records a single FLOW_STEP event for `step` immediately. If the category
+// is not enabled, then this does nothing. The `name` and `id` must match the
+// FLOW_BEGIN event above. The `step` param identifies this step within the
+// async event. This should be called at the beginning of the next phase of an
+// asynchronous operation.
+# define TRACE_EVENT_FLOW_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step)
+# define TRACE_EVENT_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_FLOW_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step)
+# define TRACE_EVENT_COPY_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step, arg1_name, arg1_val)
+
+// Records a single FLOW_END event for "name" immediately. If the category
+// is not enabled, then this does nothing.
+# define TRACE_EVENT_FLOW_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_FLOW_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation specific tracing API definitions.
+
+// Get a pointer to the enabled state of the given trace category. Only
+// long-lived literal strings should be given as the category name. The returned
+// pointer can be held permanently in a local static for example. If the
+// unsigned char is non-zero, tracing is enabled. If tracing is enabled,
+// TRACE_EVENT_API_ADD_TRACE_EVENT can be called. It's OK if tracing is disabled
+// between the load of the tracing state and the call to
+// TRACE_EVENT_API_ADD_TRACE_EVENT, because this flag only provides an early out
+// for best performance when tracing is disabled.
+// const unsigned char*
+// TRACE_EVENT_API_GET_CATEGORY_ENABLED(const char* category_name)
+# define TRACE_EVENT_API_GET_CATEGORY_ENABLED \
+ webrtc::EventTracer::GetCategoryEnabled
+
+// Add a trace event to the platform tracing system.
+// void TRACE_EVENT_API_ADD_TRACE_EVENT(
+// char phase,
+// const unsigned char* category_enabled,
+// const char* name,
+// unsigned long long id,
+// int num_args,
+// const char** arg_names,
+// const unsigned char* arg_types,
+// const unsigned long long* arg_values,
+// unsigned char flags)
+# define TRACE_EVENT_API_ADD_TRACE_EVENT MOZ_INTERNAL_UPROFILER_SIMPLE_EVENT
+
+////////////////////////////////////////////////////////////////////////////////
+
+// Implementation detail: trace event macros create temporary variables
+// to keep instrumentation overhead low. These macros give each temporary
+// variable a unique name based on the line number to prevent name collissions.
+# define INTERNAL_TRACE_EVENT_UID3(a, b) trace_event_unique_##a##b
+# define INTERNAL_TRACE_EVENT_UID2(a, b) INTERNAL_TRACE_EVENT_UID3(a, b)
+# define INTERNAL_TRACE_EVENT_UID(name_prefix) \
+ INTERNAL_TRACE_EVENT_UID2(name_prefix, __LINE__)
+
+# if WEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS
+# define INTERNAL_TRACE_EVENT_INFO_TYPE const unsigned char*
+# else
+# define INTERNAL_TRACE_EVENT_INFO_TYPE static const unsigned char*
+# endif // WEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS
+
+// Implementation detail: internal macro to create static category.
+# define INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category) \
+ INTERNAL_TRACE_EVENT_INFO_TYPE INTERNAL_TRACE_EVENT_UID(catstatic) = \
+ reinterpret_cast<const unsigned char*>(category);
+
+// Implementation detail: internal macro to create static category and add
+// event if the category is enabled.
+# define INTERNAL_TRACE_EVENT_ADD(phase, category, name, flags, ...) \
+ do { \
+ INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \
+ if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \
+ webrtc::trace_event_internal::AddTraceEvent( \
+ phase, INTERNAL_TRACE_EVENT_UID(catstatic), name, \
+ webrtc::trace_event_internal::kNoEventId, flags, ##__VA_ARGS__); \
+ } \
+ } while (0)
+
+// Implementation detail: internal macro to create static category and add begin
+// event if the category is enabled. Also adds the end event when the scope
+// ends.
+# define INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, ...) \
+ INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \
+ webrtc::trace_event_internal::TraceEndOnScopeClose \
+ INTERNAL_TRACE_EVENT_UID(profileScope); \
+ if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \
+ webrtc::trace_event_internal::AddTraceEvent( \
+ TRACE_EVENT_PHASE_BEGIN, INTERNAL_TRACE_EVENT_UID(catstatic), name, \
+ webrtc::trace_event_internal::kNoEventId, TRACE_EVENT_FLAG_NONE, \
+ ##__VA_ARGS__); \
+ INTERNAL_TRACE_EVENT_UID(profileScope) \
+ .Initialize(INTERNAL_TRACE_EVENT_UID(catstatic), name); \
+ }
+
+// Implementation detail: internal macro to create static category and add
+// event if the category is enabled.
+# define INTERNAL_TRACE_EVENT_ADD_WITH_ID(phase, category, name, id, flags, \
+ ...) \
+ do { \
+ INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \
+ if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \
+ unsigned char trace_event_flags = flags | TRACE_EVENT_FLAG_HAS_ID; \
+ webrtc::trace_event_internal::TraceID trace_event_trace_id( \
+ id, &trace_event_flags); \
+ webrtc::trace_event_internal::AddTraceEvent( \
+ phase, INTERNAL_TRACE_EVENT_UID(catstatic), name, \
+ trace_event_trace_id.data(), trace_event_flags, ##__VA_ARGS__); \
+ } \
+ } while (0)
+
+# ifdef MOZ_GECKO_PROFILER
+# define MOZ_INTERNAL_UPROFILER_SIMPLE_EVENT(phase, category_enabled, name, \
+ id, num_args, arg_names, \
+ arg_types, arg_values, flags) \
+ uprofiler_simple_event_marker(name, phase, num_args, arg_names, \
+ arg_types, arg_values);
+# else
+# define MOZ_INTERNAL_UPROFILER_SIMPLE_EVENT(phase, category_enabled, name, \
+ id, num_args, arg_names, \
+ arg_types, arg_values, flags)
+# endif
+
+// Notes regarding the following definitions:
+// New values can be added and propagated to third party libraries, but existing
+// definitions must never be changed, because third party libraries may use old
+// definitions.
+
+// Phase indicates the nature of an event entry. E.g. part of a begin/end pair.
+# define TRACE_EVENT_PHASE_BEGIN ('B')
+# define TRACE_EVENT_PHASE_END ('E')
+# define TRACE_EVENT_PHASE_INSTANT ('I')
+# define TRACE_EVENT_PHASE_ASYNC_BEGIN ('S')
+# define TRACE_EVENT_PHASE_ASYNC_STEP ('T')
+# define TRACE_EVENT_PHASE_ASYNC_END ('F')
+# define TRACE_EVENT_PHASE_FLOW_BEGIN ('s')
+# define TRACE_EVENT_PHASE_FLOW_STEP ('t')
+# define TRACE_EVENT_PHASE_FLOW_END ('f')
+# define TRACE_EVENT_PHASE_METADATA ('M')
+# define TRACE_EVENT_PHASE_COUNTER ('C')
+
+// Flags for changing the behavior of TRACE_EVENT_API_ADD_TRACE_EVENT.
+# define TRACE_EVENT_FLAG_NONE (static_cast<unsigned char>(0))
+# define TRACE_EVENT_FLAG_COPY (static_cast<unsigned char>(1 << 0))
+# define TRACE_EVENT_FLAG_HAS_ID (static_cast<unsigned char>(1 << 1))
+# define TRACE_EVENT_FLAG_MANGLE_ID (static_cast<unsigned char>(1 << 2))
+
+namespace webrtc {
+namespace trace_event_internal {
+
+// Specify these values when the corresponding argument of AddTraceEvent is not
+// used.
+const int kZeroNumArgs = 0;
+const unsigned long long kNoEventId = 0;
+
+// TraceID encapsulates an ID that can either be an integer or pointer. Pointers
+// are mangled with the Process ID so that they are unlikely to collide when the
+// same pointer is used on different processes.
+class TraceID {
+ public:
+ class ForceMangle {
+ public:
+ explicit ForceMangle(unsigned long long id) : data_(id) {}
+ explicit ForceMangle(unsigned long id) : data_(id) {}
+ explicit ForceMangle(unsigned int id) : data_(id) {}
+ explicit ForceMangle(unsigned short id) : data_(id) {}
+ explicit ForceMangle(unsigned char id) : data_(id) {}
+ explicit ForceMangle(long long id)
+ : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(long id)
+ : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(int id) : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(short id)
+ : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(signed char id)
+ : data_(static_cast<unsigned long long>(id)) {}
+
+ unsigned long long data() const { return data_; }
+
+ private:
+ unsigned long long data_;
+ };
+
+ explicit TraceID(const void* id, unsigned char* flags)
+ : data_(
+ static_cast<unsigned long long>(reinterpret_cast<uintptr_t>(id))) {
+ *flags |= TRACE_EVENT_FLAG_MANGLE_ID;
+ }
+ explicit TraceID(ForceMangle id, unsigned char* flags) : data_(id.data()) {
+ *flags |= TRACE_EVENT_FLAG_MANGLE_ID;
+ }
+ explicit TraceID(unsigned long long id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned long id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned int id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned short id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned char id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(long long id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(long id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(int id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(short id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(signed char id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+
+ unsigned long long data() const { return data_; }
+
+ private:
+ unsigned long long data_;
+};
+
+// Simple union to store various types as unsigned long long.
+union TraceValueUnion {
+ bool as_bool;
+ unsigned long long as_uint;
+ long long as_int;
+ double as_double;
+ const void* as_pointer;
+ const char* as_string;
+};
+
+// Simple container for const char* that should be copied instead of retained.
+class TraceStringWithCopy {
+ public:
+ explicit TraceStringWithCopy(const char* str) : str_(str) {}
+ operator const char*() const { return str_; }
+
+ private:
+ const char* str_;
+};
+
+// Define SetTraceValue for each allowed type. It stores the type and
+// value in the return arguments. This allows this API to avoid declaring any
+// structures so that it is portable to third_party libraries.
+# define INTERNAL_DECLARE_SET_TRACE_VALUE(actual_type, union_member, \
+ value_type_id) \
+ static inline void SetTraceValue(actual_type arg, unsigned char* type, \
+ unsigned long long* value) { \
+ TraceValueUnion type_value; \
+ type_value.union_member = arg; \
+ *type = value_type_id; \
+ *value = type_value.as_uint; \
+ }
+// Simpler form for int types that can be safely casted.
+# define INTERNAL_DECLARE_SET_TRACE_VALUE_INT(actual_type, value_type_id) \
+ static inline void SetTraceValue(actual_type arg, unsigned char* type, \
+ unsigned long long* value) { \
+ *type = value_type_id; \
+ *value = static_cast<unsigned long long>(arg); \
+ }
+
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned long long, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned long, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned int, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned short, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned char, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(long long, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(long, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(int, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(short, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(signed char, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE(bool, as_bool, TRACE_VALUE_TYPE_BOOL)
+INTERNAL_DECLARE_SET_TRACE_VALUE(double, as_double, TRACE_VALUE_TYPE_DOUBLE)
+INTERNAL_DECLARE_SET_TRACE_VALUE(const void*, as_pointer,
+ TRACE_VALUE_TYPE_POINTER)
+INTERNAL_DECLARE_SET_TRACE_VALUE(const char*, as_string,
+ TRACE_VALUE_TYPE_STRING)
+INTERNAL_DECLARE_SET_TRACE_VALUE(const TraceStringWithCopy&, as_string,
+ TRACE_VALUE_TYPE_COPY_STRING)
+
+# undef INTERNAL_DECLARE_SET_TRACE_VALUE
+# undef INTERNAL_DECLARE_SET_TRACE_VALUE_INT
+
+// std::string version of SetTraceValue so that trace arguments can be strings.
+static inline void SetTraceValue(const std::string& arg, unsigned char* type,
+ unsigned long long* value) {
+ TraceValueUnion type_value;
+ type_value.as_string = arg.c_str();
+ *type = TRACE_VALUE_TYPE_COPY_STRING;
+ *value = type_value.as_uint;
+}
+
+// These AddTraceEvent template functions are defined here instead of in the
+// macro, because the arg_values could be temporary objects, such as
+// std::string. In order to store pointers to the internal c_str and pass
+// through to the tracing API, the arg_values must live throughout
+// these procedures.
+
+static inline void AddTraceEvent(char phase,
+ const unsigned char* category_enabled,
+ const char* name, unsigned long long id,
+ unsigned char flags) {
+ TRACE_EVENT_API_ADD_TRACE_EVENT(phase, category_enabled, name, id,
+ kZeroNumArgs, nullptr, nullptr, nullptr,
+ flags);
+}
+
+template <class ARG1_TYPE>
+static inline void AddTraceEvent(char phase,
+ const unsigned char* category_enabled,
+ const char* name, unsigned long long id,
+ unsigned char flags, const char* arg1_name,
+ const ARG1_TYPE& arg1_val) {
+ const int num_args = 1;
+ unsigned char arg_types[1];
+ unsigned long long arg_values[1];
+ SetTraceValue(arg1_val, &arg_types[0], &arg_values[0]);
+ TRACE_EVENT_API_ADD_TRACE_EVENT(phase, category_enabled, name, id, num_args,
+ &arg1_name, arg_types, arg_values, flags);
+}
+
+template <class ARG1_TYPE, class ARG2_TYPE>
+static inline void AddTraceEvent(char phase,
+ const unsigned char* category_enabled,
+ const char* name, unsigned long long id,
+ unsigned char flags, const char* arg1_name,
+ const ARG1_TYPE& arg1_val,
+ const char* arg2_name,
+ const ARG2_TYPE& arg2_val) {
+ const int num_args = 2;
+ const char* arg_names[2] = {arg1_name, arg2_name};
+ unsigned char arg_types[2];
+ unsigned long long arg_values[2];
+ SetTraceValue(arg1_val, &arg_types[0], &arg_values[0]);
+ SetTraceValue(arg2_val, &arg_types[1], &arg_values[1]);
+ TRACE_EVENT_API_ADD_TRACE_EVENT(phase, category_enabled, name, id, num_args,
+ arg_names, arg_types, arg_values, flags);
+}
+
+// Used by TRACE_EVENTx macro. Do not use directly.
+class TraceEndOnScopeClose {
+ public:
+ // Note: members of data_ intentionally left uninitialized. See Initialize.
+ TraceEndOnScopeClose() : p_data_(nullptr) {}
+ ~TraceEndOnScopeClose() {
+ if (p_data_) AddEventIfEnabled();
+ }
+
+ void Initialize(const unsigned char* category_enabled, const char* name) {
+ data_.category_enabled = category_enabled;
+ data_.name = name;
+ p_data_ = &data_;
+ }
+
+ private:
+ // Add the end event if the category is still enabled.
+ void AddEventIfEnabled() {
+ // Only called when p_data_ is non-null.
+ if (*p_data_->category_enabled) {
+ TRACE_EVENT_API_ADD_TRACE_EVENT(TRACE_EVENT_PHASE_END,
+ p_data_->category_enabled, p_data_->name,
+ kNoEventId, kZeroNumArgs, nullptr,
+ nullptr, nullptr, TRACE_EVENT_FLAG_NONE);
+ }
+ }
+
+ // This Data struct workaround is to avoid initializing all the members
+ // in Data during construction of this object, since this object is always
+ // constructed, even when tracing is disabled. If the members of Data were
+ // members of this class instead, compiler warnings occur about potential
+ // uninitialized accesses.
+ struct Data {
+ const unsigned char* category_enabled;
+ const char* name;
+ };
+ Data* p_data_;
+ Data data_;
+};
+
+} // namespace trace_event_internal
+} // namespace webrtc
+#else
+
+////////////////////////////////////////////////////////////////////////////////
+// This section defines no-op alternatives to the tracing macros when
+// RTC_DISABLE_TRACE_EVENTS is defined.
+
+# define RTC_NOOP() \
+ do { \
+ } while (0)
+
+# define TRACE_STR_COPY(str) RTC_NOOP()
+
+# define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name
+
+# define TRACE_ID_MANGLE(id) 0
+
+# define TRACE_EVENT0(category, name) RTC_NOOP()
+# define TRACE_EVENT1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_INSTANT0(category, name) RTC_NOOP()
+# define TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) RTC_NOOP()
+
+# define TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_COPY_INSTANT0(category, name) RTC_NOOP()
+# define TRACE_EVENT_COPY_INSTANT1(category, name, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_INSTANT2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_BEGIN0(category, name) RTC_NOOP()
+# define TRACE_EVENT_BEGIN1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT_BEGIN2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_BEGIN0(category, name) RTC_NOOP()
+# define TRACE_EVENT_COPY_BEGIN1(category, name, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_BEGIN2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_END0(category, name) RTC_NOOP()
+# define TRACE_EVENT_END1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT_END2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_END0(category, name) RTC_NOOP()
+# define TRACE_EVENT_COPY_END1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT_COPY_END2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_COUNTER1(category, name, value) RTC_NOOP()
+# define TRACE_COPY_COUNTER1(category, name, value) RTC_NOOP()
+
+# define TRACE_COUNTER2(category, name, value1_name, value1_val, value2_name, \
+ value2_val) \
+ RTC_NOOP()
+# define TRACE_COPY_COUNTER2(category, name, value1_name, value1_val, \
+ value2_name, value2_val) \
+ RTC_NOOP()
+
+# define TRACE_COUNTER_ID1(category, name, id, value) RTC_NOOP()
+# define TRACE_COPY_COUNTER_ID1(category, name, id, value) RTC_NOOP()
+
+# define TRACE_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ RTC_NOOP()
+# define TRACE_COPY_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_ASYNC_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_ASYNC_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_ASYNC_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_FLOW_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_FLOW_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_FLOW_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_FLOW_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_FLOW_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_API_GET_CATEGORY_ENABLED ""
+
+# define TRACE_EVENT_API_ADD_TRACE_EVENT RTC_NOOP()
+
+#endif // RTC_TRACE_EVENTS_ENABLED
+
+#endif // GECKO_TRACE_EVENT_H_
diff --git a/tools/profiler/public/MicroGeckoProfiler.h b/tools/profiler/public/MicroGeckoProfiler.h
new file mode 100644
index 0000000000..7b735e1eec
--- /dev/null
+++ b/tools/profiler/public/MicroGeckoProfiler.h
@@ -0,0 +1,130 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This contains things related to the Gecko profiler, for use in third_party
+// code. It is very minimal and is designed to be used by patching over
+// upstream code.
+// Only use the C ABI and guard C++ code with #ifdefs, don't pull anything from
+// Gecko, it must be possible to include the header file into any C++ codebase.
+
+#ifndef MICRO_GECKO_PROFILER
+#define MICRO_GECKO_PROFILER
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <mozilla/Types.h>
+#include <stdio.h>
+
+#ifdef _WIN32
+# include <libloaderapi.h>
+#else
+# include <dlfcn.h>
+#endif
+
+extern MOZ_EXPORT void uprofiler_register_thread(const char* aName,
+ void* aGuessStackTop);
+
+extern MOZ_EXPORT void uprofiler_unregister_thread();
+
+extern MOZ_EXPORT void uprofiler_simple_event_marker(
+ const char* name, char phase, int num_args, const char** arg_names,
+ const unsigned char* arg_types, const unsigned long long* arg_values);
+#ifdef __cplusplus
+}
+
+struct AutoRegisterProfiler {
+ AutoRegisterProfiler(const char* name, char* stacktop) {
+ if (getenv("MOZ_UPROFILER_LOG_THREAD_CREATION")) {
+ printf("### UProfiler: new thread: '%s'\n", name);
+ }
+ uprofiler_register_thread(name, stacktop);
+ }
+ ~AutoRegisterProfiler() { uprofiler_unregister_thread(); }
+};
+#endif // __cplusplus
+
+void uprofiler_simple_event_marker(const char* name, char phase, int num_args,
+ const char** arg_names,
+ const unsigned char* arg_types,
+ const unsigned long long* arg_values);
+
+struct UprofilerFuncPtrs {
+ void (*register_thread)(const char* aName, void* aGuessStackTop);
+ void (*unregister_thread)();
+ void (*simple_event_marker)(const char* name, char phase, int num_args,
+ const char** arg_names,
+ const unsigned char* arg_types,
+ const unsigned long long* arg_values);
+};
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-function"
+
+static void register_thread_noop(const char* aName, void* aGuessStackTop) {
+ /* no-op */
+}
+static void unregister_thread_noop() { /* no-op */
+}
+static void simple_event_marker_noop(const char* name, char phase, int num_args,
+ const char** arg_names,
+ const unsigned char* arg_types,
+ const unsigned long long* arg_values) {
+ /* no-op */
+}
+
+#pragma GCC diagnostic pop
+
+#if defined(_WIN32)
+# define UPROFILER_OPENLIB() GetModuleHandle(NULL)
+#else
+# define UPROFILER_OPENLIB() dlopen(NULL, RTLD_NOW)
+#endif
+
+#if defined(_WIN32)
+# define UPROFILER_GET_SYM(handle, sym) GetProcAddress(handle, sym)
+#else
+# define UPROFILER_GET_SYM(handle, sym) dlsym(handle, sym)
+#endif
+
+#if defined(_WIN32)
+# define UPROFILER_PRINT_ERROR(func) fprintf(stderr, "%s error\n", #func);
+#else
+# define UPROFILER_PRINT_ERROR(func) \
+ fprintf(stderr, "%s error: %s\n", #func, dlerror());
+#endif
+
+// Assumes that a variable of type UprofilerFuncPtrs, named uprofiler
+// is accessible in the scope
+#define UPROFILER_GET_FUNCTIONS() \
+ void* handle = UPROFILER_OPENLIB(); \
+ if (!handle) { \
+ UPROFILER_PRINT_ERROR(UPROFILER_OPENLIB); \
+ uprofiler.register_thread = register_thread_noop; \
+ uprofiler.unregister_thread = unregister_thread_noop; \
+ uprofiler.simple_event_marker = simple_event_marker_noop; \
+ } \
+ uprofiler.register_thread = \
+ UPROFILER_GET_SYM(handle, "uprofiler_register_thread"); \
+ if (!uprofiler.register_thread) { \
+ UPROFILER_PRINT_ERROR(uprofiler_unregister_thread); \
+ uprofiler.register_thread = register_thread_noop; \
+ } \
+ uprofiler.unregister_thread = \
+ UPROFILER_GET_SYM(handle, "uprofiler_unregister_thread"); \
+ if (!uprofiler.unregister_thread) { \
+ UPROFILER_PRINT_ERROR(uprofiler_unregister_thread); \
+ uprofiler.unregister_thread = unregister_thread_noop; \
+ } \
+ uprofiler.simple_event_marker = \
+ UPROFILER_GET_SYM(handle, "uprofiler_simple_event_marker"); \
+ if (!uprofiler.simple_event_marker) { \
+ UPROFILER_PRINT_ERROR(uprofiler_simple_event_marker); \
+ uprofiler.simple_event_marker = simple_event_marker_noop; \
+ }
+
+#endif // MICRO_GECKO_PROFILER
diff --git a/tools/profiler/public/ProfileAdditionalInformation.h b/tools/profiler/public/ProfileAdditionalInformation.h
new file mode 100644
index 0000000000..c4cc8697b0
--- /dev/null
+++ b/tools/profiler/public/ProfileAdditionalInformation.h
@@ -0,0 +1,90 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// The Gecko Profiler is an always-on profiler that takes fast and low overhead
+// samples of the program execution using only userspace functionality for
+// portability. The goal of this module is to provide performance data in a
+// generic cross-platform way without requiring custom tools or kernel support.
+//
+// Samples are collected to form a timeline with optional timeline event
+// (markers) used for filtering. The samples include both native stacks and
+// platform-independent "label stack" frames.
+
+#ifndef ProfileAdditionalInformation_h
+#define ProfileAdditionalInformation_h
+
+#ifdef MOZ_GECKO_PROFILER
+# include "shared-libraries.h"
+#endif
+#include "js/Value.h"
+#include "nsString.h"
+
+namespace IPC {
+class MessageReader;
+class MessageWriter;
+template <typename T>
+struct ParamTraits;
+} // namespace IPC
+
+namespace mozilla {
+// This structure contains additional information gathered while generating the
+// profile json and iterating the buffer.
+struct ProfileGenerationAdditionalInformation {
+#ifdef MOZ_GECKO_PROFILER
+ ProfileGenerationAdditionalInformation() = default;
+ explicit ProfileGenerationAdditionalInformation(
+ const SharedLibraryInfo&& aSharedLibraries)
+ : mSharedLibraries(aSharedLibraries) {}
+
+ size_t SizeOf() const { return mSharedLibraries.SizeOf(); }
+
+ void Append(ProfileGenerationAdditionalInformation&& aOther) {
+ mSharedLibraries.AddAllSharedLibraries(aOther.mSharedLibraries);
+ }
+
+ void FinishGathering() { mSharedLibraries.DeduplicateEntries(); }
+
+ void ToJSValue(JSContext* aCx, JS::MutableHandle<JS::Value> aRetVal) const;
+
+ SharedLibraryInfo mSharedLibraries;
+#endif // MOZ_GECKO_PROFILER
+};
+
+struct ProfileAndAdditionalInformation {
+ ProfileAndAdditionalInformation() = default;
+ explicit ProfileAndAdditionalInformation(const nsCString&& aProfile)
+ : mProfile(aProfile) {}
+
+ ProfileAndAdditionalInformation(
+ const nsCString&& aProfile,
+ const ProfileGenerationAdditionalInformation&& aAdditionalInformation)
+ : mProfile(aProfile),
+ mAdditionalInformation(Some(aAdditionalInformation)) {}
+
+ size_t SizeOf() const {
+ size_t size = mProfile.Length();
+#ifdef MOZ_GECKO_PROFILER
+ if (mAdditionalInformation.isSome()) {
+ size += mAdditionalInformation->SizeOf();
+ }
+#endif
+ return size;
+ }
+
+ nsCString mProfile;
+ Maybe<ProfileGenerationAdditionalInformation> mAdditionalInformation;
+};
+} // namespace mozilla
+
+namespace IPC {
+template <>
+struct ParamTraits<mozilla::ProfileGenerationAdditionalInformation> {
+ typedef mozilla::ProfileGenerationAdditionalInformation paramType;
+
+ static void Write(MessageWriter* aWriter, const paramType& aParam);
+ static bool Read(MessageReader* aReader, paramType* aResult);
+};
+} // namespace IPC
+
+#endif // ProfileAdditionalInformation_h
diff --git a/tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h b/tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h
new file mode 100644
index 0000000000..1578bd2ddc
--- /dev/null
+++ b/tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h
@@ -0,0 +1,160 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfileBufferEntrySerializationGeckoExtensions_h
+#define ProfileBufferEntrySerializationGeckoExtensions_h
+
+#include "mozilla/ProfileBufferEntrySerialization.h"
+
+#include "js/AllocPolicy.h"
+#include "js/Utility.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+// ----------------------------------------------------------------------------
+// ns[C]String
+
+// nsString or nsCString contents are serialized as the number of bytes (encoded
+// as ULEB128) and all the characters in the string. The terminal '\0' is
+// omitted.
+// Make sure you write and read with the same character type!
+//
+// Usage: `nsCString s = ...; aEW.WriteObject(s);`
+template <typename CHAR>
+struct ProfileBufferEntryWriter::Serializer<nsTString<CHAR>> {
+ static Length Bytes(const nsTString<CHAR>& aS) {
+ const auto length = aS.Length();
+ return ProfileBufferEntryWriter::ULEB128Size(length) +
+ static_cast<Length>(length * sizeof(CHAR));
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW, const nsTString<CHAR>& aS) {
+ const auto length = aS.Length();
+ aEW.WriteULEB128(length);
+ // Copy the bytes from the string's buffer.
+ aEW.WriteBytes(aS.Data(), length * sizeof(CHAR));
+ }
+};
+
+template <typename CHAR>
+struct ProfileBufferEntryReader::Deserializer<nsTString<CHAR>> {
+ static void ReadInto(ProfileBufferEntryReader& aER, nsTString<CHAR>& aS) {
+ aS = Read(aER);
+ }
+
+ static nsTString<CHAR> Read(ProfileBufferEntryReader& aER) {
+ const Length length = aER.ReadULEB128<Length>();
+ nsTString<CHAR> s;
+ // BulkWrite is the most efficient way to copy bytes into the target string.
+ auto writerOrErr = s.BulkWrite(length, 0, true);
+ MOZ_RELEASE_ASSERT(!writerOrErr.isErr());
+
+ auto writer = writerOrErr.unwrap();
+
+ aER.ReadBytes(writer.Elements(), length * sizeof(CHAR));
+ writer.Finish(length, true);
+ return s;
+ }
+};
+
+// ----------------------------------------------------------------------------
+// nsAuto[C]String
+
+// nsAuto[C]String contents are serialized as the number of bytes (encoded as
+// ULEB128) and all the characters in the string. The terminal '\0' is omitted.
+// Make sure you write and read with the same character type!
+//
+// Usage: `nsAutoCString s = ...; aEW.WriteObject(s);`
+template <typename CHAR, size_t N>
+struct ProfileBufferEntryWriter::Serializer<nsTAutoStringN<CHAR, N>> {
+ static Length Bytes(const nsTAutoStringN<CHAR, N>& aS) {
+ const auto length = aS.Length();
+ return ProfileBufferEntryWriter::ULEB128Size(length) +
+ static_cast<Length>(length * sizeof(CHAR));
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW,
+ const nsTAutoStringN<CHAR, N>& aS) {
+ const auto length = aS.Length();
+ aEW.WriteULEB128(length);
+ // Copy the bytes from the string's buffer.
+ aEW.WriteBytes(aS.BeginReading(), length * sizeof(CHAR));
+ }
+};
+
+template <typename CHAR, size_t N>
+struct ProfileBufferEntryReader::Deserializer<nsTAutoStringN<CHAR, N>> {
+ static void ReadInto(ProfileBufferEntryReader& aER,
+ nsTAutoStringN<CHAR, N>& aS) {
+ aS = Read(aER);
+ }
+
+ static nsTAutoStringN<CHAR, N> Read(ProfileBufferEntryReader& aER) {
+ const auto length = aER.ReadULEB128<Length>();
+ nsTAutoStringN<CHAR, N> s;
+ // BulkWrite is the most efficient way to copy bytes into the target string.
+ auto writerOrErr = s.BulkWrite(length, 0, true);
+ MOZ_RELEASE_ASSERT(!writerOrErr.isErr());
+
+ auto writer = writerOrErr.unwrap();
+ aER.ReadBytes(writer.Elements(), length * sizeof(CHAR));
+ writer.Finish(length, true);
+ return s;
+ }
+};
+
+// ----------------------------------------------------------------------------
+// JS::UniqueChars
+
+// JS::UniqueChars contents are serialized as the number of bytes (encoded as
+// ULEB128) and all the characters in the string. The terminal '\0' is omitted.
+// Note: A nullptr pointer will be serialized like an empty string, so when
+// deserializing it will result in an allocated buffer only containing a
+// single null terminator.
+//
+// Usage: `JS::UniqueChars s = ...; aEW.WriteObject(s);`
+template <>
+struct ProfileBufferEntryWriter::Serializer<JS::UniqueChars> {
+ static Length Bytes(const JS::UniqueChars& aS) {
+ if (!aS) {
+ return ProfileBufferEntryWriter::ULEB128Size<Length>(0);
+ }
+ const auto len = static_cast<Length>(strlen(aS.get()));
+ return ProfileBufferEntryWriter::ULEB128Size(len) + len;
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW, const JS::UniqueChars& aS) {
+ if (!aS) {
+ aEW.WriteULEB128<Length>(0);
+ return;
+ }
+ const auto len = static_cast<Length>(strlen(aS.get()));
+ aEW.WriteULEB128(len);
+ aEW.WriteBytes(aS.get(), len);
+ }
+};
+
+template <>
+struct ProfileBufferEntryReader::Deserializer<JS::UniqueChars> {
+ static void ReadInto(ProfileBufferEntryReader& aER, JS::UniqueChars& aS) {
+ aS = Read(aER);
+ }
+
+ static JS::UniqueChars Read(ProfileBufferEntryReader& aER) {
+ const auto len = aER.ReadULEB128<Length>();
+ // Use the same allocation policy as JS_smprintf.
+ char* buffer =
+ static_cast<char*>(js::SystemAllocPolicy{}.pod_malloc<char>(len + 1));
+ aER.ReadBytes(buffer, len);
+ buffer[len] = '\0';
+ return JS::UniqueChars(buffer);
+ }
+};
+
+} // namespace mozilla
+
+#endif // ProfileBufferEntrySerializationGeckoExtensions_h
diff --git a/tools/profiler/public/ProfileJSONWriter.h b/tools/profiler/public/ProfileJSONWriter.h
new file mode 100644
index 0000000000..8d23d7a890
--- /dev/null
+++ b/tools/profiler/public/ProfileJSONWriter.h
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef PROFILEJSONWRITER_H
+#define PROFILEJSONWRITER_H
+
+#include "mozilla/BaseProfileJSONWriter.h"
+
+using ChunkedJSONWriteFunc = mozilla::baseprofiler::ChunkedJSONWriteFunc;
+using JSONSchemaWriter = mozilla::baseprofiler::JSONSchemaWriter;
+using OStreamJSONWriteFunc = mozilla::baseprofiler::OStreamJSONWriteFunc;
+using SpliceableChunkedJSONWriter =
+ mozilla::baseprofiler::SpliceableChunkedJSONWriter;
+using SpliceableJSONWriter = mozilla::baseprofiler::SpliceableJSONWriter;
+using UniqueJSONStrings = mozilla::baseprofiler::UniqueJSONStrings;
+
+#endif // PROFILEJSONWRITER_H
diff --git a/tools/profiler/public/ProfilerBindings.h b/tools/profiler/public/ProfilerBindings.h
new file mode 100644
index 0000000000..096a860130
--- /dev/null
+++ b/tools/profiler/public/ProfilerBindings.h
@@ -0,0 +1,162 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* FFI functions for Profiler Rust API to call into profiler */
+
+#ifndef ProfilerBindings_h
+#define ProfilerBindings_h
+
+#include "mozilla/BaseProfilerMarkersPrerequisites.h"
+
+#include <cstddef>
+#include <stdint.h>
+
+namespace mozilla {
+class AutoProfilerLabel;
+class MarkerSchema;
+class MarkerTiming;
+class TimeStamp;
+enum class StackCaptureOptions;
+
+namespace baseprofiler {
+enum class ProfilingCategoryPair : uint32_t;
+class SpliceableJSONWriter;
+} // namespace baseprofiler
+
+} // namespace mozilla
+
+namespace JS {
+enum class ProfilingCategoryPair : uint32_t;
+} // namespace JS
+
+// Everything in here is safe to include unconditionally, implementations must
+// take !MOZ_GECKO_PROFILER into account.
+extern "C" {
+
+void gecko_profiler_register_thread(const char* aName);
+void gecko_profiler_unregister_thread();
+
+void gecko_profiler_construct_label(mozilla::AutoProfilerLabel* aAutoLabel,
+ JS::ProfilingCategoryPair aCategoryPair);
+void gecko_profiler_destruct_label(mozilla::AutoProfilerLabel* aAutoLabel);
+
+// Construct, clone and destruct the timestamp for profiler time.
+void gecko_profiler_construct_timestamp_now(mozilla::TimeStamp* aTimeStamp);
+void gecko_profiler_clone_timestamp(const mozilla::TimeStamp* aSrcTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp);
+void gecko_profiler_destruct_timestamp(mozilla::TimeStamp* aTimeStamp);
+
+// Addition and subtraction for timestamp.
+void gecko_profiler_add_timestamp(const mozilla::TimeStamp* aTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp,
+ double aMicroseconds);
+void gecko_profiler_subtract_timestamp(const mozilla::TimeStamp* aTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp,
+ double aMicroseconds);
+
+// Various MarkerTiming constructors and a destructor.
+void gecko_profiler_construct_marker_timing_instant_at(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime);
+void gecko_profiler_construct_marker_timing_instant_now(
+ mozilla::MarkerTiming* aMarkerTiming);
+void gecko_profiler_construct_marker_timing_interval(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aStartTime,
+ const mozilla::TimeStamp* aEndTime);
+void gecko_profiler_construct_marker_timing_interval_until_now_from(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aStartTime);
+void gecko_profiler_construct_marker_timing_interval_start(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime);
+void gecko_profiler_construct_marker_timing_interval_end(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime);
+void gecko_profiler_destruct_marker_timing(
+ mozilla::MarkerTiming* aMarkerTiming);
+
+// MarkerSchema constructors and destructor.
+void gecko_profiler_construct_marker_schema(
+ mozilla::MarkerSchema* aMarkerSchema,
+ const mozilla::MarkerSchema::Location* aLocations, size_t aLength);
+void gecko_profiler_construct_marker_schema_with_special_front_end_location(
+ mozilla::MarkerSchema* aMarkerSchema);
+void gecko_profiler_destruct_marker_schema(
+ mozilla::MarkerSchema* aMarkerSchema);
+
+// MarkerSchema methods for adding labels.
+void gecko_profiler_marker_schema_set_chart_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength);
+void gecko_profiler_marker_schema_set_tooltip_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength);
+void gecko_profiler_marker_schema_set_table_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength);
+void gecko_profiler_marker_schema_set_all_labels(mozilla::MarkerSchema* aSchema,
+ const char* aLabel,
+ size_t aLabelLength);
+
+// MarkerSchema methods for adding key/key-label values.
+void gecko_profiler_marker_schema_add_key_format(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ mozilla::MarkerSchema::Format aFormat);
+void gecko_profiler_marker_schema_add_key_label_format(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ const char* aLabel, size_t aLabelLength,
+ mozilla::MarkerSchema::Format aFormat);
+void gecko_profiler_marker_schema_add_key_format_searchable(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ mozilla::MarkerSchema::Format aFormat,
+ mozilla::MarkerSchema::Searchable aSearchable);
+void gecko_profiler_marker_schema_add_key_label_format_searchable(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ const char* aLabel, size_t aLabelLength,
+ mozilla::MarkerSchema::Format aFormat,
+ mozilla::MarkerSchema::Searchable aSearchable);
+void gecko_profiler_marker_schema_add_static_label_value(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength,
+ const char* aValue, size_t aValueLength);
+
+// Stream MarkerSchema to SpliceableJSONWriter.
+void gecko_profiler_marker_schema_stream(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, mozilla::MarkerSchema* aMarkerSchema,
+ void* aStreamedNamesSet);
+
+// Various SpliceableJSONWriter methods to add properties.
+void gecko_profiler_json_writer_int_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, int64_t aValue);
+void gecko_profiler_json_writer_float_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, double aValue);
+void gecko_profiler_json_writer_bool_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, bool aValue);
+void gecko_profiler_json_writer_string_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, const char* aValue, size_t aValueLength);
+void gecko_profiler_json_writer_null_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength);
+
+// Marker APIs.
+void gecko_profiler_add_marker_untyped(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions);
+void gecko_profiler_add_marker_text(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions, const char* aText,
+ size_t aTextLength);
+void gecko_profiler_add_marker(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions, uint8_t aMarkerTag,
+ const uint8_t* aPayload, size_t aPayloadSize);
+
+} // extern "C"
+
+#endif // ProfilerBindings_h
diff --git a/tools/profiler/public/ProfilerChild.h b/tools/profiler/public/ProfilerChild.h
new file mode 100644
index 0000000000..a781784aae
--- /dev/null
+++ b/tools/profiler/public/ProfilerChild.h
@@ -0,0 +1,106 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerChild_h
+#define ProfilerChild_h
+
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/PProfilerChild.h"
+#include "mozilla/ProfileBufferControlledChunkManager.h"
+#include "mozilla/ProgressLogger.h"
+#include "mozilla/RefPtr.h"
+#include "ProfileAdditionalInformation.h"
+
+class nsIThread;
+struct PRThread;
+
+namespace mozilla {
+
+// The ProfilerChild actor is created in all processes except for the main
+// process. The corresponding ProfilerParent actor is created in the main
+// process, and it will notify us about profiler state changes and request
+// profiles from us.
+class ProfilerChild final : public PProfilerChild,
+ public mozilla::ipc::IShmemAllocator {
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ProfilerChild, final)
+
+ ProfilerChild();
+
+ // Collects and returns a profile.
+ // This method can be used to grab a profile just before PProfiler is torn
+ // down. The collected profile should then be sent through a different
+ // message channel that is guaranteed to stay open long enough.
+ ProfileAndAdditionalInformation GrabShutdownProfile();
+
+ void Destroy();
+
+ // This should be called regularly from outside of the profiler lock.
+ static void ProcessPendingUpdate();
+
+ static bool IsLockedOnCurrentThread();
+
+ private:
+ virtual ~ProfilerChild();
+
+ mozilla::ipc::IPCResult RecvStart(const ProfilerInitParams& params,
+ StartResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvEnsureStarted(
+ const ProfilerInitParams& params,
+ EnsureStartedResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvStop(StopResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvPause(PauseResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvResume(ResumeResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvPauseSampling(
+ PauseSamplingResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvResumeSampling(
+ ResumeSamplingResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvWaitOnePeriodicSampling(
+ WaitOnePeriodicSamplingResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvAwaitNextChunkManagerUpdate(
+ AwaitNextChunkManagerUpdateResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvDestroyReleasedChunksAtOrBefore(
+ const TimeStamp& aTimeStamp) override;
+ mozilla::ipc::IPCResult RecvGatherProfile(
+ GatherProfileResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvGetGatherProfileProgress(
+ GetGatherProfileProgressResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvClearAllPages() override;
+
+ void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;
+
+ FORWARD_SHMEM_ALLOCATOR_TO(PProfilerChild)
+
+ void SetupChunkManager();
+ void ResetChunkManager();
+ void ResolveChunkUpdate(
+ PProfilerChild::AwaitNextChunkManagerUpdateResolver& aResolve);
+ void ProcessChunkManagerUpdate(
+ ProfileBufferControlledChunkManager::Update&& aUpdate);
+
+ static void GatherProfileThreadFunction(void* already_AddRefedParameters);
+
+ nsCOMPtr<nsIThread> mThread;
+ bool mDestroyed;
+
+ ProfileBufferControlledChunkManager* mChunkManager = nullptr;
+ AwaitNextChunkManagerUpdateResolver mAwaitNextChunkManagerUpdateResolver;
+ ProfileBufferControlledChunkManager::Update mChunkManagerUpdate;
+
+ struct ProfilerChildAndUpdate {
+ RefPtr<ProfilerChild> mProfilerChild;
+ ProfileBufferControlledChunkManager::Update mUpdate;
+ };
+ static DataMutexBase<ProfilerChildAndUpdate,
+ baseprofiler::detail::BaseProfilerMutex>
+ sPendingChunkManagerUpdate;
+
+ RefPtr<ProgressLogger::SharedProgress> mGatherProfileProgress;
+};
+
+} // namespace mozilla
+
+#endif // ProfilerChild_h
diff --git a/tools/profiler/public/ProfilerCodeAddressService.h b/tools/profiler/public/ProfilerCodeAddressService.h
new file mode 100644
index 0000000000..9d75c363b3
--- /dev/null
+++ b/tools/profiler/public/ProfilerCodeAddressService.h
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerCodeAddressService_h
+#define ProfilerCodeAddressService_h
+
+#include "CodeAddressService.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+
+// This SymbolTable struct, and the CompactSymbolTable struct in the
+// profiler rust module, have the exact same memory layout.
+// nsTArray and ThinVec are FFI-compatible, because the thin-vec crate is
+// being compiled with the "gecko-ffi" feature enabled.
+struct SymbolTable {
+ SymbolTable() = default;
+ SymbolTable(SymbolTable&& aOther) = default;
+
+ nsTArray<uint32_t> mAddrs;
+ nsTArray<uint32_t> mIndex;
+ nsTArray<uint8_t> mBuffer;
+};
+
+} // namespace mozilla
+
+/**
+ * Cache and look up function symbol names.
+ *
+ * We don't template this on AllocPolicy since we need to use nsTArray in
+ * SymbolTable above, which doesn't work with AllocPolicy. (We can't switch
+ * to Vector, as we would lose FFI compatibility with ThinVec.)
+ */
+class ProfilerCodeAddressService : public mozilla::CodeAddressService<> {
+ public:
+ // Like GetLocation, but only returns the symbol name.
+ bool GetFunction(const void* aPc, nsACString& aResult);
+
+ private:
+#if defined(XP_LINUX) || defined(XP_FREEBSD)
+ // Map of library names (owned by mLibraryStrings) to SymbolTables filled
+ // in by profiler_get_symbol_table.
+ mozilla::HashMap<const char*, mozilla::SymbolTable,
+ mozilla::DefaultHasher<const char*>, AllocPolicy>
+ mSymbolTables;
+#endif
+};
+
+#endif // ProfilerCodeAddressService_h
diff --git a/tools/profiler/public/ProfilerControl.h b/tools/profiler/public/ProfilerControl.h
new file mode 100644
index 0000000000..466d15eb69
--- /dev/null
+++ b/tools/profiler/public/ProfilerControl.h
@@ -0,0 +1,190 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// APIs that control the lifetime of the profiler: Initialization, start, pause,
+// resume, stop, and shutdown.
+
+#ifndef ProfilerControl_h
+#define ProfilerControl_h
+
+#include "mozilla/BaseProfilerRAIIMacro.h"
+
+// Everything in here is also safe to include unconditionally, and only defines
+// empty macros if MOZ_GECKO_PROFILER is unset.
+// If your file only uses particular APIs (e.g., only markers), please consider
+// including only the needed headers instead of this one, to reduce compilation
+// dependencies.
+
+enum class IsFastShutdown {
+ No,
+ Yes,
+};
+
+#ifndef MOZ_GECKO_PROFILER
+
+// This file can be #included unconditionally. However, everything within this
+// file must be guarded by a #ifdef MOZ_GECKO_PROFILER, *except* for the
+// following macros and functions, which encapsulate the most common operations
+// and thus avoid the need for many #ifdefs.
+
+# define AUTO_PROFILER_INIT ::profiler_init_main_thread_id()
+# define AUTO_PROFILER_INIT2
+
+// Function stubs for when MOZ_GECKO_PROFILER is not defined.
+
+static inline void profiler_init(void* stackTop) {}
+
+static inline void profiler_shutdown(
+ IsFastShutdown aIsFastShutdown = IsFastShutdown::No) {}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "BaseProfiler.h"
+# include "mozilla/Attributes.h"
+# include "mozilla/Maybe.h"
+# include "mozilla/MozPromise.h"
+# include "mozilla/PowerOfTwo.h"
+# include "mozilla/Vector.h"
+
+//---------------------------------------------------------------------------
+// Start and stop the profiler
+//---------------------------------------------------------------------------
+
+static constexpr mozilla::PowerOfTwo32 PROFILER_DEFAULT_ENTRIES =
+ mozilla::baseprofiler::BASE_PROFILER_DEFAULT_ENTRIES;
+
+static constexpr mozilla::PowerOfTwo32 PROFILER_DEFAULT_STARTUP_ENTRIES =
+ mozilla::baseprofiler::BASE_PROFILER_DEFAULT_STARTUP_ENTRIES;
+
+# define PROFILER_DEFAULT_INTERVAL BASE_PROFILER_DEFAULT_INTERVAL
+# define PROFILER_MAX_INTERVAL BASE_PROFILER_MAX_INTERVAL
+
+# define PROFILER_DEFAULT_ACTIVE_TAB_ID 0
+
+// Initialize the profiler. If MOZ_PROFILER_STARTUP is set the profiler will
+// also be started. This call must happen before any other profiler calls
+// (except profiler_start(), which will call profiler_init() if it hasn't
+// already run).
+void profiler_init(void* stackTop);
+void profiler_init_threadmanager();
+
+// Call this as early as possible
+# define AUTO_PROFILER_INIT mozilla::AutoProfilerInit PROFILER_RAII
+// Call this after the nsThreadManager is Init()ed
+# define AUTO_PROFILER_INIT2 mozilla::AutoProfilerInit2 PROFILER_RAII
+
+// Clean up the profiler module, stopping it if required. This function may
+// also save a shutdown profile if requested. No profiler calls should happen
+// after this point and all profiling stack labels should have been popped.
+void profiler_shutdown(IsFastShutdown aIsFastShutdown = IsFastShutdown::No);
+
+// Start the profiler -- initializing it first if necessary -- with the
+// selected options. Stops and restarts the profiler if it is already active.
+// After starting the profiler is "active". The samples will be recorded in a
+// circular buffer.
+// "aCapacity" is the maximum number of 8-bytes entries in the profiler's
+// circular buffer.
+// "aInterval" the sampling interval, measured in millseconds.
+// "aFeatures" is the feature set. Features unsupported by this
+// platform/configuration are ignored.
+// "aFilters" is the list of thread filters. Threads that do not match any
+// of the filters are not profiled. A filter matches a thread if
+// (a) the thread name contains the filter as a case-insensitive
+// substring, or
+// (b) the filter is of the form "pid:<n>" where n is the process
+// id of the process that the thread is running in.
+// "aActiveTabID" BrowserId of the active browser screen's active tab.
+// It's being used to determine the profiled tab. It's "0" if
+// we failed to get the ID.
+// "aDuration" is the duration of entries in the profiler's circular buffer.
+// Returns as soon as this process' profiler has started, the returned promise
+// gets resolved when profilers in sub-processes (if any) have started.
+RefPtr<mozilla::GenericPromise> profiler_start(
+ mozilla::PowerOfTwo32 aCapacity, double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount, uint64_t aActiveTabID,
+ const mozilla::Maybe<double>& aDuration = mozilla::Nothing());
+
+// Stop the profiler and discard the profile without saving it. A no-op if the
+// profiler is inactive. After stopping the profiler is "inactive".
+// Returns as soon as this process' profiler has stopped, the returned promise
+// gets resolved when profilers in sub-processes (if any) have stopped.
+RefPtr<mozilla::GenericPromise> profiler_stop();
+
+// If the profiler is inactive, start it. If it's already active, restart it if
+// the requested settings differ from the current settings. Both the check and
+// the state change are performed while the profiler state is locked.
+// The only difference to profiler_start is that the current buffer contents are
+// not discarded if the profiler is already running with the requested settings.
+void profiler_ensure_started(
+ mozilla::PowerOfTwo32 aCapacity, double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount, uint64_t aActiveTabID,
+ const mozilla::Maybe<double>& aDuration = mozilla::Nothing());
+
+//---------------------------------------------------------------------------
+// Control the profiler
+//---------------------------------------------------------------------------
+
+// Pause and resume the profiler. No-ops if the profiler is inactive. While
+// paused the profile will not take any samples and will not record any data
+// into its buffers. The profiler remains fully initialized in this state.
+// Timeline markers will still be stored. This feature will keep JavaScript
+// profiling enabled, thus allowing toggling the profiler without invalidating
+// the JIT.
+// Returns as soon as this process' profiler has paused/resumed, the returned
+// promise gets resolved when profilers in sub-processes (if any) have
+// paused/resumed.
+RefPtr<mozilla::GenericPromise> profiler_pause();
+RefPtr<mozilla::GenericPromise> profiler_resume();
+
+// Only pause and resume the periodic sampling loop, including stack sampling,
+// counters, and profiling overheads.
+// Returns as soon as this process' profiler has paused/resumed sampling, the
+// returned promise gets resolved when profilers in sub-processes (if any) have
+// paused/resumed sampling.
+RefPtr<mozilla::GenericPromise> profiler_pause_sampling();
+RefPtr<mozilla::GenericPromise> profiler_resume_sampling();
+
+//---------------------------------------------------------------------------
+// Get information from the profiler
+//---------------------------------------------------------------------------
+
+// Get the params used to start the profiler. Returns 0 and an empty vector
+// (via outparams) if the profile is inactive. It's possible that the features
+// returned may be slightly different to those requested due to required
+// adjustments.
+void profiler_get_start_params(
+ int* aEntrySize, mozilla::Maybe<double>* aDuration, double* aInterval,
+ uint32_t* aFeatures,
+ mozilla::Vector<const char*, 0, mozilla::MallocAllocPolicy>* aFilters,
+ uint64_t* aActiveTabID);
+
+//---------------------------------------------------------------------------
+// RAII classes
+//---------------------------------------------------------------------------
+
+namespace mozilla {
+
+class MOZ_RAII AutoProfilerInit {
+ public:
+ explicit AutoProfilerInit() { profiler_init(this); }
+
+ ~AutoProfilerInit() { profiler_shutdown(); }
+
+ private:
+};
+
+class MOZ_RAII AutoProfilerInit2 {
+ public:
+ explicit AutoProfilerInit2() { profiler_init_threadmanager(); }
+
+ private:
+};
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerControl_h
diff --git a/tools/profiler/public/ProfilerCounts.h b/tools/profiler/public/ProfilerCounts.h
new file mode 100644
index 0000000000..86f6cbfe4f
--- /dev/null
+++ b/tools/profiler/public/ProfilerCounts.h
@@ -0,0 +1,296 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerCounts_h
+#define ProfilerCounts_h
+
+#ifndef MOZ_GECKO_PROFILER
+
+# define PROFILER_DEFINE_COUNT_TOTAL(label, category, description)
+# define PROFILER_DEFINE_COUNT(label, category, description)
+# define PROFILER_DEFINE_STATIC_COUNT_TOTAL(label, category, description)
+# define AUTO_PROFILER_TOTAL(label, count)
+# define AUTO_PROFILER_COUNT(label)
+# define AUTO_PROFILER_STATIC_COUNT(label, count)
+
+#else
+
+# include "mozilla/Atomics.h"
+
+class BaseProfilerCount;
+void profiler_add_sampled_counter(BaseProfilerCount* aCounter);
+void profiler_remove_sampled_counter(BaseProfilerCount* aCounter);
+
+typedef mozilla::Atomic<int64_t, mozilla::MemoryOrdering::Relaxed>
+ ProfilerAtomicSigned;
+typedef mozilla::Atomic<uint64_t, mozilla::MemoryOrdering::Relaxed>
+ ProfilerAtomicUnsigned;
+
+// Counter support
+// There are two types of counters:
+// 1) a simple counter which can be added to or subtracted from. This could
+// track the number of objects of a type, the number of calls to something
+// (reflow, JIT, etc).
+// 2) a combined counter which has the above, plus a number-of-calls counter
+// that is incremented by 1 for each call to modify the count. This provides
+// an optional source for a 'heatmap' of access. This can be used (for
+// example) to track the amount of memory allocated, and provide a heatmap of
+// memory operations (allocs/frees).
+//
+// Counters are sampled by the profiler once per sample-period. At this time,
+// all counters are global to the process. In the future, there might be more
+// versions with per-thread or other discriminators.
+//
+// Typical usage:
+// There are two ways to use counters: With heap-created counter objects,
+// or using macros. Note: the macros use statics, and will be slightly
+// faster/smaller, and you need to care about creating them before using
+// them. They're similar to the use-pattern for the other AUTO_PROFILER*
+// macros, but they do need the PROFILER_DEFINE* to be use to instantiate
+// the statics.
+//
+// PROFILER_DEFINE_COUNT(mything, "JIT", "Some JIT byte count")
+// ...
+// void foo() { ... AUTO_PROFILER_COUNT(mything, number_of_bytes_used); ... }
+//
+// or (to also get a heatmap)
+//
+// PROFILER_DEFINE_COUNT_TOTAL(mything, "JIT", "Some JIT byte count")
+// ...
+// void foo() {
+// ...
+// AUTO_PROFILER_COUNT_TOTAL(mything, number_of_bytes_generated);
+// ...
+// }
+//
+// To use without statics/macros:
+//
+// UniquePtr<ProfilerCounter> myCounter;
+// ...
+// myCounter =
+// MakeUnique<ProfilerCounter>("mything", "JIT", "Some JIT byte count"));
+// ...
+// void foo() { ... myCounter->Add(number_of_bytes_generated0; ... }
+
+class BaseProfilerCount {
+ public:
+ BaseProfilerCount(const char* aLabel, ProfilerAtomicSigned* aCounter,
+ ProfilerAtomicUnsigned* aNumber, const char* aCategory,
+ const char* aDescription)
+ : mLabel(aLabel),
+ mCategory(aCategory),
+ mDescription(aDescription),
+ mCounter(aCounter),
+ mNumber(aNumber) {
+# define COUNTER_CANARY 0xDEADBEEF
+# ifdef DEBUG
+ mCanary = COUNTER_CANARY;
+ mPrevNumber = 0;
+# endif
+ // Can't call profiler_* here since this may be non-xul-library
+ }
+
+ virtual ~BaseProfilerCount() {
+# ifdef DEBUG
+ mCanary = 0;
+# endif
+ }
+
+ struct CountSample {
+ int64_t count;
+ uint64_t number;
+ // This field indicates if the sample has already been consummed by a call
+ // to the Sample() method. This allows the profiler to discard duplicate
+ // samples if the counter sampling rate is lower than the profiler sampling
+ // rate. This can happen for example with some power meters that sample up
+ // to every 10ms.
+ // It should always be true when calling Sample() for the first time.
+ bool isSampleNew;
+ };
+ virtual CountSample Sample() {
+ MOZ_ASSERT(mCanary == COUNTER_CANARY);
+
+ CountSample result;
+ result.count = *mCounter;
+ result.number = mNumber ? *mNumber : 0;
+# ifdef DEBUG
+ MOZ_ASSERT(result.number >= mPrevNumber);
+ mPrevNumber = result.number;
+# endif
+ result.isSampleNew = true;
+ return result;
+ }
+
+ void Clear() {
+ *mCounter = 0;
+ // We don't reset *mNumber or mPrevNumber. We encode numbers as
+ // positive deltas, and currently we only care about the deltas (for
+ // e.g. heatmaps). If we ever need to clear mNumber as well, we can an
+ // alternative method (Reset()) to do so.
+ }
+
+ // We don't define ++ and Add() here, since the static defines directly
+ // increment the atomic counters, and the subclasses implement ++ and
+ // Add() directly.
+
+ // These typically are static strings (for example if you use the macros
+ // below)
+ const char* mLabel;
+ const char* mCategory;
+ const char* mDescription;
+ // We're ok with these being un-ordered in race conditions. These are
+ // pointers because we want to be able to use statics and increment them
+ // directly. Otherwise we could just have them inline, and not need the
+ // constructor args.
+ // These can be static globals (using the macros below), though they
+ // don't have to be - their lifetime must be longer than the use of them
+ // by the profiler (see profiler_add/remove_sampled_counter()). If you're
+ // using a lot of these, they probably should be allocated at runtime (see
+ // class ProfilerCountOnly below).
+ ProfilerAtomicSigned* mCounter;
+ ProfilerAtomicUnsigned* mNumber; // may be null
+
+# ifdef DEBUG
+ uint32_t mCanary;
+ uint64_t mPrevNumber; // value of number from the last Sample()
+# endif
+};
+
+// Designed to be allocated dynamically, and simply incremented with obj++
+// or obj->Add(n)
+class ProfilerCounter final : public BaseProfilerCount {
+ public:
+ ProfilerCounter(const char* aLabel, const char* aCategory,
+ const char* aDescription)
+ : BaseProfilerCount(aLabel, &mCounter, nullptr, aCategory, aDescription) {
+ // Assume we're in libxul
+ profiler_add_sampled_counter(this);
+ }
+
+ virtual ~ProfilerCounter() { profiler_remove_sampled_counter(this); }
+
+ BaseProfilerCount& operator++() {
+ Add(1);
+ return *this;
+ }
+
+ void Add(int64_t aNumber) { mCounter += aNumber; }
+
+ ProfilerAtomicSigned mCounter;
+};
+
+// Also keeps a heatmap (number of calls to ++/Add())
+class ProfilerCounterTotal final : public BaseProfilerCount {
+ public:
+ ProfilerCounterTotal(const char* aLabel, const char* aCategory,
+ const char* aDescription)
+ : BaseProfilerCount(aLabel, &mCounter, &mNumber, aCategory,
+ aDescription) {
+ // Assume we're in libxul
+ profiler_add_sampled_counter(this);
+ }
+
+ virtual ~ProfilerCounterTotal() { profiler_remove_sampled_counter(this); }
+
+ BaseProfilerCount& operator++() {
+ Add(1);
+ return *this;
+ }
+
+ void Add(int64_t aNumber) {
+ mCounter += aNumber;
+ mNumber++;
+ }
+
+ ProfilerAtomicSigned mCounter;
+ ProfilerAtomicUnsigned mNumber;
+};
+
+// Defines a counter that is sampled on each profiler tick, with a running
+// count (signed), and number-of-instances. Note that because these are two
+// independent Atomics, there is a possiblity that count will not include
+// the last call, but number of uses will. I think this is not worth
+// worrying about
+# define PROFILER_DEFINE_COUNT_TOTAL(label, category, description) \
+ ProfilerAtomicSigned profiler_count_##label(0); \
+ ProfilerAtomicUnsigned profiler_number_##label(0); \
+ const char profiler_category_##label[] = category; \
+ const char profiler_description_##label[] = description; \
+ mozilla::UniquePtr<BaseProfilerCount> AutoCount_##label;
+
+// This counts, but doesn't keep track of the number of calls to
+// AUTO_PROFILER_COUNT()
+# define PROFILER_DEFINE_COUNT(label, category, description) \
+ ProfilerAtomicSigned profiler_count_##label(0); \
+ const char profiler_category_##label[] = category; \
+ const char profiler_description_##label[] = description; \
+ mozilla::UniquePtr<BaseProfilerCount> AutoCount_##label;
+
+// This will create a static initializer if used, but avoids a possible
+// allocation.
+# define PROFILER_DEFINE_STATIC_COUNT_TOTAL(label, category, description) \
+ ProfilerAtomicSigned profiler_count_##label(0); \
+ ProfilerAtomicUnsigned profiler_number_##label(0); \
+ BaseProfilerCount AutoCount_##label(#label, &profiler_count_##label, \
+ &profiler_number_##label, category, \
+ description);
+
+// If we didn't care about static initializers, we could avoid the need for
+// a ptr to the BaseProfilerCount object.
+
+// XXX It would be better to do this without the if() and without the
+// theoretical race to set the UniquePtr (i.e. possible leak).
+# define AUTO_PROFILER_COUNT_TOTAL(label, count) \
+ do { \
+ profiler_number_##label++; /* do this first*/ \
+ profiler_count_##label += count; \
+ if (!AutoCount_##label) { \
+ /* Ignore that we could call this twice in theory, and that we leak \
+ * them \
+ */ \
+ AutoCount_##label.reset(new BaseProfilerCount( \
+ #label, &profiler_count_##label, &profiler_number_##label, \
+ profiler_category_##label, profiler_description_##label)); \
+ profiler_add_sampled_counter(AutoCount_##label.get()); \
+ } \
+ } while (0)
+
+# define AUTO_PROFILER_COUNT(label, count) \
+ do { \
+ profiler_count_##label += count; /* do this first*/ \
+ if (!AutoCount_##label) { \
+ /* Ignore that we could call this twice in theory, and that we leak \
+ * them \
+ */ \
+ AutoCount_##label.reset(new BaseProfilerCount( \
+ #label, nullptr, &profiler_number_##label, \
+ profiler_category_##label, profiler_description_##label)); \
+ profiler_add_sampled_counter(AutoCount_##label.get()); \
+ } \
+ } while (0)
+
+# define AUTO_PROFILER_STATIC_COUNT(label, count) \
+ do { \
+ profiler_number_##label++; /* do this first*/ \
+ profiler_count_##label += count; \
+ } while (0)
+
+// if we need to force the allocation
+# define AUTO_PROFILER_FORCE_ALLOCATION(label) \
+ do { \
+ if (!AutoCount_##label) { \
+ /* Ignore that we could call this twice in theory, and that we leak \
+ * them \
+ */ \
+ AutoCount_##label.reset(new BaseProfilerCount( \
+ #label, &profiler_count_##label, &profiler_number_##label, \
+ profiler_category_##label, profiler_description_##label)); \
+ } \
+ } while (0)
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerCounts_h
diff --git a/tools/profiler/public/ProfilerLabels.h b/tools/profiler/public/ProfilerLabels.h
new file mode 100644
index 0000000000..f05e357451
--- /dev/null
+++ b/tools/profiler/public/ProfilerLabels.h
@@ -0,0 +1,268 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains all definitions related to profiler labels.
+// It is safe to include unconditionally, and only defines empty macros if
+// MOZ_GECKO_PROFILER is not set.
+
+#ifndef ProfilerLabels_h
+#define ProfilerLabels_h
+
+#include "mozilla/ProfilerThreadState.h"
+
+#include "js/ProfilingCategory.h"
+#include "js/ProfilingStack.h"
+#include "js/RootingAPI.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/BaseProfilerRAIIMacro.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/ProfilerThreadRegistration.h"
+#include "mozilla/ThreadLocal.h"
+#include "nsString.h"
+
+#include <stdint.h>
+
+struct JSContext;
+
+// Insert an RAII object in this scope to enter a label stack frame. Any
+// samples collected in this scope will contain this label in their stack.
+// The label argument must be a static C string. It is usually of the
+// form "ClassName::FunctionName". (Ideally we'd use the compiler to provide
+// that for us, but __func__ gives us the function name without the class
+// name.) If the label applies to only part of a function, you can qualify it
+// like this: "ClassName::FunctionName:PartName".
+//
+// Use AUTO_PROFILER_LABEL_DYNAMIC_* if you want to add additional / dynamic
+// information to the label stack frame.
+#define AUTO_PROFILER_LABEL(label, categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, nullptr, JS::ProfilingCategoryPair::categoryPair)
+
+// Similar to AUTO_PROFILER_LABEL, but that adds the RELEVANT_FOR_JS flag.
+#define AUTO_PROFILER_LABEL_RELEVANT_FOR_JS(label, categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, nullptr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS))
+
+// Similar to AUTO_PROFILER_LABEL, but with only one argument: the category
+// pair. The label string is taken from the category pair. This is convenient
+// for labels like AUTO_PROFILER_LABEL_CATEGORY_PAIR(GRAPHICS_LayerBuilding)
+// which would otherwise just repeat the string.
+#define AUTO_PROFILER_LABEL_CATEGORY_PAIR(categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ "", nullptr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t( \
+ js::ProfilingStackFrame::Flags::LABEL_DETERMINED_BY_CATEGORY_PAIR))
+
+// Similar to AUTO_PROFILER_LABEL_CATEGORY_PAIR but adding the RELEVANT_FOR_JS
+// flag.
+#define AUTO_PROFILER_LABEL_CATEGORY_PAIR_RELEVANT_FOR_JS(categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ "", nullptr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t( \
+ js::ProfilingStackFrame::Flags::LABEL_DETERMINED_BY_CATEGORY_PAIR) | \
+ uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS))
+
+// Similar to AUTO_PROFILER_LABEL, but with an additional string. The inserted
+// RAII object stores the cStr pointer in a field; it does not copy the string.
+//
+// WARNING: This means that the string you pass to this macro needs to live at
+// least until the end of the current scope. Be careful using this macro with
+// ns[C]String; the other AUTO_PROFILER_LABEL_DYNAMIC_* macros below are
+// preferred because they avoid this problem.
+//
+// If the profiler samples the current thread and walks the label stack while
+// this RAII object is on the stack, it will copy the supplied string into the
+// profile buffer. So there's one string copy operation, and it happens at
+// sample time.
+//
+// Compare this to the plain AUTO_PROFILER_LABEL macro, which only accepts
+// literal strings: When the label stack frames generated by
+// AUTO_PROFILER_LABEL are sampled, no string copy needs to be made because the
+// profile buffer can just store the raw pointers to the literal strings.
+// Consequently, AUTO_PROFILER_LABEL frames take up considerably less space in
+// the profile buffer than AUTO_PROFILER_LABEL_DYNAMIC_* frames.
+#define AUTO_PROFILER_LABEL_DYNAMIC_CSTR(label, categoryPair, cStr) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, cStr, JS::ProfilingCategoryPair::categoryPair)
+
+// Like AUTO_PROFILER_LABEL_DYNAMIC_CSTR, but with the NONSENSITIVE flag to
+// note that it does not contain sensitive information (so we can include it
+// in, for example, the BackgroundHangMonitor)
+#define AUTO_PROFILER_LABEL_DYNAMIC_CSTR_NONSENSITIVE(label, categoryPair, \
+ cStr) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, cStr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::NONSENSITIVE))
+
+// Similar to AUTO_PROFILER_LABEL_DYNAMIC_CSTR, but takes an nsACString.
+//
+// Note: The use of the Maybe<>s ensures the scopes for the dynamic string and
+// the AutoProfilerLabel are appropriate, while also not incurring the runtime
+// cost of the string assignment unless the profiler is active. Therefore,
+// unlike AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC_CSTR, this macro
+// doesn't push/pop a label when the profiler is inactive.
+#define AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING(label, categoryPair, nsCStr) \
+ mozilla::Maybe<nsAutoCString> autoCStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectNsCString; \
+ if (profiler_is_active()) { \
+ autoCStr.emplace(nsCStr); \
+ raiiObjectNsCString.emplace(label, autoCStr->get(), \
+ JS::ProfilingCategoryPair::categoryPair); \
+ }
+
+#define AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING_RELEVANT_FOR_JS( \
+ label, categoryPair, nsCStr) \
+ mozilla::Maybe<nsAutoCString> autoCStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectNsCString; \
+ if (profiler_is_active()) { \
+ autoCStr.emplace(nsCStr); \
+ raiiObjectNsCString.emplace( \
+ label, autoCStr->get(), JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); \
+ }
+
+// Match the conditions for MOZ_ENABLE_BACKGROUND_HANG_MONITOR
+#if defined(NIGHTLY_BUILD) && !defined(MOZ_DEBUG) && !defined(MOZ_TSAN) && \
+ !defined(MOZ_ASAN)
+# define SHOULD_CREATE_ALL_NONSENSITIVE_LABEL_FRAMES true
+#else
+# define SHOULD_CREATE_ALL_NONSENSITIVE_LABEL_FRAMES profiler_is_active()
+#endif
+
+// See note above AUTO_PROFILER_LABEL_DYNAMIC_CSTR_NONSENSITIVE
+#define AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING_NONSENSITIVE( \
+ label, categoryPair, nsCStr) \
+ mozilla::Maybe<nsAutoCString> autoCStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectNsCString; \
+ if (SHOULD_CREATE_ALL_NONSENSITIVE_LABEL_FRAMES) { \
+ autoCStr.emplace(nsCStr); \
+ raiiObjectNsCString.emplace( \
+ label, autoCStr->get(), JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::NONSENSITIVE)); \
+ }
+
+// Similar to AUTO_PROFILER_LABEL_DYNAMIC_CSTR, but takes an nsString that is
+// is lossily converted to an ASCII string.
+//
+// Note: The use of the Maybe<>s ensures the scopes for the converted dynamic
+// string and the AutoProfilerLabel are appropriate, while also not incurring
+// the runtime cost of the string conversion unless the profiler is active.
+// Therefore, unlike AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC_CSTR,
+// this macro doesn't push/pop a label when the profiler is inactive.
+#define AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING(label, categoryPair, nsStr) \
+ mozilla::Maybe<NS_LossyConvertUTF16toASCII> asciiStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectLossyNsString; \
+ if (profiler_is_active()) { \
+ asciiStr.emplace(nsStr); \
+ raiiObjectLossyNsString.emplace(label, asciiStr->get(), \
+ JS::ProfilingCategoryPair::categoryPair); \
+ }
+
+// Similar to AUTO_PROFILER_LABEL, but accepting a JSContext* parameter, and a
+// no-op if the profiler is disabled.
+// Used to annotate functions for which overhead in the range of nanoseconds is
+// noticeable. It avoids overhead from the TLS lookup because it can get the
+// ProfilingStack from the JS context, and avoids almost all overhead in the
+// case where the profiler is disabled.
+#define AUTO_PROFILER_LABEL_FAST(label, categoryPair, ctx) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ ctx, label, nullptr, JS::ProfilingCategoryPair::categoryPair)
+
+// Similar to AUTO_PROFILER_LABEL_FAST, but also takes an extra string and an
+// additional set of flags. The flags parameter should carry values from the
+// js::ProfilingStackFrame::Flags enum.
+#define AUTO_PROFILER_LABEL_DYNAMIC_FAST(label, dynamicString, categoryPair, \
+ ctx, flags) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ ctx, label, dynamicString, JS::ProfilingCategoryPair::categoryPair, \
+ flags)
+
+namespace mozilla {
+
+#ifndef MOZ_GECKO_PROFILER
+
+class MOZ_RAII AutoProfilerLabel {
+ public:
+ // This is the AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC variant.
+ AutoProfilerLabel(const char* aLabel, const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair,
+ uint32_t aFlags = 0) {}
+
+ // This is the AUTO_PROFILER_LABEL_FAST variant.
+ AutoProfilerLabel(JSContext* aJSContext, const char* aLabel,
+ const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair, uint32_t aFlags) {}
+
+ ~AutoProfilerLabel() {}
+};
+
+#else // !MOZ_GECKO_PROFILER
+
+// This class creates a non-owning ProfilingStack reference. Objects of this
+// class are stack-allocated, and so exist within a thread, and are thus bounded
+// by the lifetime of the thread, which ensures that the references held can't
+// be used after the ProfilingStack is destroyed.
+class MOZ_RAII AutoProfilerLabel {
+ public:
+ // This is the AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC variant.
+ AutoProfilerLabel(const char* aLabel, const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair,
+ uint32_t aFlags = 0) {
+ // Get the ProfilingStack from TLS.
+ ProfilingStack* profilingStack =
+ profiler::ThreadRegistration::WithOnThreadRefOr(
+ [](profiler::ThreadRegistration::OnThreadRef aThread) {
+ return &aThread.UnlockedConstReaderAndAtomicRWRef()
+ .ProfilingStackRef();
+ },
+ nullptr);
+ Push(profilingStack, aLabel, aDynamicString, aCategoryPair, aFlags);
+ }
+
+ // This is the AUTO_PROFILER_LABEL_FAST variant. It retrieves the
+ // ProfilingStack from the JSContext and does nothing if the profiler is
+ // inactive.
+ AutoProfilerLabel(JSContext* aJSContext, const char* aLabel,
+ const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair, uint32_t aFlags) {
+ Push(js::GetContextProfilingStackIfEnabled(aJSContext), aLabel,
+ aDynamicString, aCategoryPair, aFlags);
+ }
+
+ void Push(ProfilingStack* aProfilingStack, const char* aLabel,
+ const char* aDynamicString, JS::ProfilingCategoryPair aCategoryPair,
+ uint32_t aFlags = 0) {
+ // This function runs both on and off the main thread.
+
+ mProfilingStack = aProfilingStack;
+ if (mProfilingStack) {
+ mProfilingStack->pushLabelFrame(aLabel, aDynamicString, this,
+ aCategoryPair, aFlags);
+ }
+ }
+
+ ~AutoProfilerLabel() {
+ // This function runs both on and off the main thread.
+
+ if (mProfilingStack) {
+ mProfilingStack->pop();
+ }
+ }
+
+ private:
+ // We save a ProfilingStack pointer in the ctor so we don't have to redo the
+ // TLS lookup in the dtor.
+ ProfilingStack* mProfilingStack;
+};
+
+#endif // !MOZ_GECKO_PROFILER
+
+} // namespace mozilla
+
+#endif // ProfilerLabels_h
diff --git a/tools/profiler/public/ProfilerMarkerTypes.h b/tools/profiler/public/ProfilerMarkerTypes.h
new file mode 100644
index 0000000000..0868c70e30
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkerTypes.h
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerMarkerTypes_h
+#define ProfilerMarkerTypes_h
+
+// This header contains common marker type definitions that rely on xpcom.
+//
+// It #include's "mozilla/BaseProfilerMarkerTypess.h" and "ProfilerMarkers.h",
+// see these files for more marker types, how to define other marker types, and
+// how to add markers to the profiler buffers.
+
+// !!! /!\ WORK IN PROGRESS /!\ !!!
+// This file contains draft marker definitions, but most are not used yet.
+// Further work is needed to complete these definitions, and use them to convert
+// existing PROFILER_ADD_MARKER calls. See meta bug 1661394.
+
+#include "mozilla/BaseProfilerMarkerTypes.h"
+#include "mozilla/ProfilerMarkers.h"
+#include "js/ProfilingFrameIterator.h"
+#include "js/Utility.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/ServoTraversalStatistics.h"
+
+namespace geckoprofiler::markers {
+
+// Import some common markers from mozilla::baseprofiler::markers.
+using MediaSampleMarker = mozilla::baseprofiler::markers::MediaSampleMarker;
+using VideoFallingBehindMarker =
+ mozilla::baseprofiler::markers::VideoFallingBehindMarker;
+using ContentBuildMarker = mozilla::baseprofiler::markers::ContentBuildMarker;
+using MediaEngineMarker = mozilla::baseprofiler::markers::MediaEngineMarker;
+using MediaEngineTextMarker =
+ mozilla::baseprofiler::markers::MediaEngineTextMarker;
+
+} // namespace geckoprofiler::markers
+
+#endif // ProfilerMarkerTypes_h
diff --git a/tools/profiler/public/ProfilerMarkers.h b/tools/profiler/public/ProfilerMarkers.h
new file mode 100644
index 0000000000..ca53c3f189
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkers.h
@@ -0,0 +1,355 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Markers are useful to delimit something important happening such as the first
+// paint. Unlike labels, which are only recorded in the profile buffer if a
+// sample is collected while the label is on the label stack, markers will
+// always be recorded in the profile buffer.
+//
+// This header contains definitions necessary to add markers to the Gecko
+// Profiler buffer.
+//
+// It #include's "mozilla/BaseProfilerMarkers.h", see that header for base
+// definitions necessary to create marker types.
+//
+// If common marker types are needed, #include "ProfilerMarkerTypes.h" instead.
+//
+// But if you want to create your own marker type locally, you can #include this
+// header only; look at ProfilerMarkerTypes.h for examples of how to define
+// types.
+//
+// To then record markers:
+// - Use `baseprofiler::AddMarker(...)` from mozglue or other libraries that are
+// outside of xul, especially if they may happen outside of xpcom's lifetime
+// (typically startup, shutdown, or tests).
+// - Otherwise #include "ProfilerMarkers.h" instead, and use
+// `profiler_add_marker(...)`.
+// See these functions for more details.
+
+#ifndef ProfilerMarkers_h
+#define ProfilerMarkers_h
+
+#include "mozilla/BaseProfilerMarkers.h"
+#include "mozilla/ProfilerMarkersDetail.h"
+#include "mozilla/ProfilerLabels.h"
+#include "nsJSUtils.h" // for nsJSUtils::GetCurrentlyRunningCodeInnerWindowID
+
+class nsIDocShell;
+
+namespace geckoprofiler::markers::detail {
+// Please do not use anything from the detail namespace outside the profiler.
+
+#ifdef MOZ_GECKO_PROFILER
+mozilla::Maybe<uint64_t> profiler_get_inner_window_id_from_docshell(
+ nsIDocShell* aDocshell);
+#else
+inline mozilla::Maybe<uint64_t> profiler_get_inner_window_id_from_docshell(
+ nsIDocShell* aDocshell) {
+ return mozilla::Nothing();
+}
+#endif // MOZ_GECKO_PROFILER
+
+} // namespace geckoprofiler::markers::detail
+
+// This is a helper function to get the Inner Window ID from DocShell but it's
+// not a recommended method to get it and it's not encouraged to use this
+// function. If there is a computed inner window ID, `window`, or `Document`
+// available in the call site, please use them. Use this function as a last
+// resort.
+inline mozilla::MarkerInnerWindowId MarkerInnerWindowIdFromDocShell(
+ nsIDocShell* aDocshell) {
+ mozilla::Maybe<uint64_t> id = geckoprofiler::markers::detail::
+ profiler_get_inner_window_id_from_docshell(aDocshell);
+ if (!id) {
+ return mozilla::MarkerInnerWindowId::NoId();
+ }
+ return mozilla::MarkerInnerWindowId(*id);
+}
+
+// This is a helper function to get the Inner Window ID from a JS Context but
+// it's not a recommended method to get it and it's not encouraged to use this
+// function. If there is a computed inner window ID, `window`, or `Document`
+// available in the call site, please use them. Use this function as a last
+// resort.
+inline mozilla::MarkerInnerWindowId MarkerInnerWindowIdFromJSContext(
+ JSContext* aContext) {
+ return mozilla::MarkerInnerWindowId(
+ nsJSUtils::GetCurrentlyRunningCodeInnerWindowID(aContext));
+}
+
+// Bring category names from Base Profiler into the geckoprofiler::category
+// namespace, for consistency with other Gecko Profiler identifiers.
+namespace geckoprofiler::category {
+using namespace ::mozilla::baseprofiler::category;
+}
+
+#ifdef MOZ_GECKO_PROFILER
+// Forward-declaration. TODO: Move to more common header, see bug 1681416.
+bool profiler_capture_backtrace_into(
+ mozilla::ProfileChunkedBuffer& aChunkedBuffer,
+ mozilla::StackCaptureOptions aCaptureOptions);
+
+// Add a marker to a given buffer. `AddMarker()` and related macros should be
+// used in most cases, see below for more information about them and the
+// paramters; This function may be useful when markers need to be recorded in a
+// local buffer outside of the main profiler buffer.
+template <typename MarkerType, typename... PayloadArguments>
+mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer& aBuffer,
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory, mozilla::MarkerOptions&& aOptions,
+ MarkerType aMarkerType, const PayloadArguments&... aPayloadArguments) {
+ AUTO_PROFILER_LABEL("AddMarkerToBuffer", PROFILER);
+ mozilla::Unused << aMarkerType; // Only the empty object type is useful.
+ return mozilla::base_profiler_markers_detail::AddMarkerToBuffer<MarkerType>(
+ aBuffer, aName, aCategory, std::move(aOptions),
+ profiler_active_without_feature(ProfilerFeature::NoMarkerStacks)
+ ? ::profiler_capture_backtrace_into
+ : nullptr,
+ aPayloadArguments...);
+}
+
+// Add a marker (without payload) to a given buffer.
+inline mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer& aBuffer,
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory,
+ mozilla::MarkerOptions&& aOptions = {}) {
+ return AddMarkerToBuffer(aBuffer, aName, aCategory, std::move(aOptions),
+ mozilla::baseprofiler::markers::NoPayload{});
+}
+#endif
+
+[[nodiscard]] inline bool profiler_thread_is_being_profiled_for_markers() {
+ return profiler_thread_is_being_profiled(ThreadProfilingFeatures::Markers);
+}
+
+[[nodiscard]] inline bool profiler_thread_is_being_profiled_for_markers(
+ const ProfilerThreadId& aThreadId) {
+ return profiler_thread_is_being_profiled(aThreadId,
+ ThreadProfilingFeatures::Markers);
+}
+
+// Add a marker to the Gecko Profiler buffer.
+// - aName: Main name of this marker.
+// - aCategory: Category for this marker.
+// - aOptions: Optional settings (such as timing, inner window id,
+// backtrace...), see `MarkerOptions` for details.
+// - aMarkerType: Empty object that specifies the type of marker.
+// - aPayloadArguments: Arguments expected by this marker type's
+// ` StreamJSONMarkerData` function.
+template <typename MarkerType, typename... PayloadArguments>
+mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory, mozilla::MarkerOptions&& aOptions,
+ MarkerType aMarkerType, const PayloadArguments&... aPayloadArguments) {
+#ifndef MOZ_GECKO_PROFILER
+ return {};
+#else
+ if (!profiler_thread_is_being_profiled_for_markers(
+ aOptions.ThreadId().ThreadId())) {
+ return {};
+ }
+ AUTO_PROFILER_LABEL("profiler_add_marker", PROFILER);
+ return ::AddMarkerToBuffer(profiler_get_core_buffer(), aName, aCategory,
+ std::move(aOptions), aMarkerType,
+ aPayloadArguments...);
+#endif
+}
+
+// Add a marker (without payload) to the Gecko Profiler buffer.
+inline mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory,
+ mozilla::MarkerOptions&& aOptions = {}) {
+ return profiler_add_marker(aName, aCategory, std::move(aOptions),
+ mozilla::baseprofiler::markers::NoPayload{});
+}
+
+// Same as `profiler_add_marker()` (without payload). This macro is safe to use
+// even if MOZ_GECKO_PROFILER is not #defined.
+#define PROFILER_MARKER_UNTYPED(markerName, categoryName, ...) \
+ do { \
+ AUTO_PROFILER_STATS(PROFILER_MARKER_UNTYPED); \
+ ::profiler_add_marker(markerName, ::geckoprofiler::category::categoryName, \
+ ##__VA_ARGS__); \
+ } while (false)
+
+// Same as `profiler_add_marker()` (with payload). This macro is safe to use
+// even if MOZ_GECKO_PROFILER is not #defined.
+#define PROFILER_MARKER(markerName, categoryName, options, MarkerType, ...) \
+ do { \
+ AUTO_PROFILER_STATS(PROFILER_MARKER_with_##MarkerType); \
+ ::profiler_add_marker(markerName, ::geckoprofiler::category::categoryName, \
+ options, ::geckoprofiler::markers::MarkerType{}, \
+ ##__VA_ARGS__); \
+ } while (false)
+
+namespace geckoprofiler::markers {
+// Most common marker types. Others are in ProfilerMarkerTypes.h.
+using TextMarker = ::mozilla::baseprofiler::markers::TextMarker;
+using Tracing = mozilla::baseprofiler::markers::Tracing;
+} // namespace geckoprofiler::markers
+
+// Add a text marker. This macro is safe to use even if MOZ_GECKO_PROFILER is
+// not #defined.
+#define PROFILER_MARKER_TEXT(markerName, categoryName, options, text) \
+ do { \
+ AUTO_PROFILER_STATS(PROFILER_MARKER_TEXT); \
+ ::profiler_add_marker(markerName, ::geckoprofiler::category::categoryName, \
+ options, ::geckoprofiler::markers::TextMarker{}, \
+ text); \
+ } while (false)
+
+// RAII object that adds a PROFILER_MARKER_TEXT when destroyed; the marker's
+// timing will be the interval from construction (unless an instant or start
+// time is already specified in the provided options) until destruction.
+class MOZ_RAII AutoProfilerTextMarker {
+ public:
+ AutoProfilerTextMarker(const char* aMarkerName,
+ const mozilla::MarkerCategory& aCategory,
+ mozilla::MarkerOptions&& aOptions,
+ const nsACString& aText)
+ : mMarkerName(aMarkerName),
+ mCategory(aCategory),
+ mOptions(std::move(aOptions)),
+ mText(aText) {
+ MOZ_ASSERT(mOptions.Timing().EndTime().IsNull(),
+ "AutoProfilerTextMarker options shouldn't have an end time");
+ if (profiler_is_active_and_unpaused() &&
+ mOptions.Timing().StartTime().IsNull()) {
+ mOptions.Set(mozilla::MarkerTiming::InstantNow());
+ }
+ }
+
+ ~AutoProfilerTextMarker() {
+ if (profiler_is_active_and_unpaused()) {
+ AUTO_PROFILER_LABEL("TextMarker", PROFILER);
+ mOptions.TimingRef().SetIntervalEnd();
+ AUTO_PROFILER_STATS(AUTO_PROFILER_MARKER_TEXT);
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategory, std::move(mOptions), geckoprofiler::markers::TextMarker{},
+ mText);
+ }
+ }
+
+ protected:
+ const char* mMarkerName;
+ mozilla::MarkerCategory mCategory;
+ mozilla::MarkerOptions mOptions;
+ nsCString mText;
+};
+
+// Creates an AutoProfilerTextMarker RAII object. This macro is safe to use
+// even if MOZ_GECKO_PROFILER is not #defined.
+#define AUTO_PROFILER_MARKER_TEXT(markerName, categoryName, options, text) \
+ AutoProfilerTextMarker PROFILER_RAII( \
+ markerName, ::mozilla::baseprofiler::category::categoryName, options, \
+ text)
+
+class MOZ_RAII AutoProfilerTracing {
+ public:
+ AutoProfilerTracing(const char* aCategoryString, const char* aMarkerName,
+ mozilla::MarkerCategory aCategoryPair,
+ const mozilla::Maybe<uint64_t>& aInnerWindowID)
+ : mCategoryString(aCategoryString),
+ mMarkerName(aMarkerName),
+ mCategoryPair(aCategoryPair),
+ mInnerWindowID(aInnerWindowID) {
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategoryPair,
+ {mozilla::MarkerTiming::IntervalStart(),
+ mozilla::MarkerInnerWindowId(mInnerWindowID)},
+ geckoprofiler::markers::Tracing{},
+ mozilla::ProfilerString8View::WrapNullTerminatedString(
+ mCategoryString));
+ }
+
+ AutoProfilerTracing(
+ const char* aCategoryString, const char* aMarkerName,
+ mozilla::MarkerCategory aCategoryPair,
+ mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aBacktrace,
+ const mozilla::Maybe<uint64_t>& aInnerWindowID)
+ : mCategoryString(aCategoryString),
+ mMarkerName(aMarkerName),
+ mCategoryPair(aCategoryPair),
+ mInnerWindowID(aInnerWindowID) {
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategoryPair,
+ {mozilla::MarkerTiming::IntervalStart(),
+ mozilla::MarkerInnerWindowId(mInnerWindowID),
+ mozilla::MarkerStack::TakeBacktrace(std::move(aBacktrace))},
+ geckoprofiler::markers::Tracing{},
+ mozilla::ProfilerString8View::WrapNullTerminatedString(
+ mCategoryString));
+ }
+
+ ~AutoProfilerTracing() {
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategoryPair,
+ {mozilla::MarkerTiming::IntervalEnd(),
+ mozilla::MarkerInnerWindowId(mInnerWindowID)},
+ geckoprofiler::markers::Tracing{},
+ mozilla::ProfilerString8View::WrapNullTerminatedString(
+ mCategoryString));
+ }
+
+ protected:
+ const char* mCategoryString;
+ const char* mMarkerName;
+ const mozilla::MarkerCategory mCategoryPair;
+ const mozilla::Maybe<uint64_t> mInnerWindowID;
+};
+
+// Adds a START/END pair of tracing markers.
+#define AUTO_PROFILER_TRACING_MARKER(categoryString, markerName, categoryPair) \
+ AutoProfilerTracing PROFILER_RAII(categoryString, markerName, \
+ geckoprofiler::category::categoryPair, \
+ mozilla::Nothing())
+#define AUTO_PROFILER_TRACING_MARKER_INNERWINDOWID( \
+ categoryString, markerName, categoryPair, innerWindowId) \
+ AutoProfilerTracing PROFILER_RAII(categoryString, markerName, \
+ geckoprofiler::category::categoryPair, \
+ mozilla::Some(innerWindowId))
+#define AUTO_PROFILER_TRACING_MARKER_DOCSHELL(categoryString, markerName, \
+ categoryPair, docShell) \
+ AutoProfilerTracing PROFILER_RAII( \
+ categoryString, markerName, geckoprofiler::category::categoryPair, \
+ geckoprofiler::markers::detail:: \
+ profiler_get_inner_window_id_from_docshell(docShell))
+
+#ifdef MOZ_GECKO_PROFILER
+extern template mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer&, const mozilla::ProfilerString8View&,
+ const mozilla::MarkerCategory&, mozilla::MarkerOptions&&,
+ mozilla::baseprofiler::markers::NoPayload);
+
+extern template mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer&, const mozilla::ProfilerString8View&,
+ const mozilla::MarkerCategory&, mozilla::MarkerOptions&&,
+ mozilla::baseprofiler::markers::TextMarker, const std::string&);
+
+extern template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::TextMarker,
+ const std::string&);
+
+extern template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::TextMarker,
+ const nsCString&);
+
+extern template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::Tracing,
+ const mozilla::ProfilerString8View&);
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerMarkers_h
diff --git a/tools/profiler/public/ProfilerMarkersDetail.h b/tools/profiler/public/ProfilerMarkersDetail.h
new file mode 100644
index 0000000000..2308a14bb2
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkersDetail.h
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerMarkersDetail_h
+#define ProfilerMarkersDetail_h
+
+#ifndef ProfilerMarkers_h
+# error "This header should only be #included by ProfilerMarkers.h"
+#endif
+
+#include "mozilla/ProfilerMarkersPrerequisites.h"
+
+#ifdef MOZ_GECKO_PROFILER
+
+// ~~ HERE BE DRAGONS ~~
+//
+// Everything below is internal implementation detail, you shouldn't need to
+// look at it unless working on the profiler code.
+
+// Header that specializes the (de)serializers for xpcom types.
+# include "mozilla/ProfileBufferEntrySerializationGeckoExtensions.h"
+
+// Implemented in platform.cpp
+mozilla::ProfileChunkedBuffer& profiler_get_core_buffer();
+
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerMarkersDetail_h
diff --git a/tools/profiler/public/ProfilerMarkersPrerequisites.h b/tools/profiler/public/ProfilerMarkersPrerequisites.h
new file mode 100644
index 0000000000..0f10f7efe2
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkersPrerequisites.h
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains basic definitions required to create marker types, and
+// to add markers to the profiler buffers.
+//
+// In most cases, #include "mozilla/ProfilerMarkers.h" instead, or
+// #include "mozilla/ProfilerMarkerTypes.h" for common marker types.
+
+#ifndef ProfilerMarkersPrerequisites_h
+#define ProfilerMarkersPrerequisites_h
+
+#include "mozilla/BaseProfilerMarkersPrerequisites.h"
+#include "mozilla/ProfilerThreadState.h"
+
+#ifdef MOZ_GECKO_PROFILER
+
+namespace geckoprofiler::markers {
+
+// Default marker payload types, with no extra information, not even a marker
+// type and payload. This is intended for label-only markers.
+using NoPayload = ::mozilla::baseprofiler::markers::NoPayload;
+
+} // namespace geckoprofiler::markers
+
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerMarkersPrerequisites_h
diff --git a/tools/profiler/public/ProfilerParent.h b/tools/profiler/public/ProfilerParent.h
new file mode 100644
index 0000000000..8bd5c71721
--- /dev/null
+++ b/tools/profiler/public/ProfilerParent.h
@@ -0,0 +1,119 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerParent_h
+#define ProfilerParent_h
+
+#include "mozilla/PProfilerParent.h"
+#include "mozilla/RefPtr.h"
+
+class nsIProfilerStartParams;
+
+namespace mozilla {
+
+class ProfileBufferGlobalController;
+class ProfilerParentTracker;
+
+// This is the main process side of the PProfiler protocol.
+// ProfilerParent instances only exist on the main thread of the main process.
+// The other side (ProfilerChild) lives on a background thread in the other
+// process.
+// The creation of PProfiler actors is initiated from the main process, after
+// the other process has been launched.
+// ProfilerParent instances are destroyed once the message channel closes,
+// which can be triggered by either process, depending on which one shuts down
+// first.
+// All ProfilerParent instances are registered with a manager class called
+// ProfilerParentTracker, which has the list of living ProfilerParent instances
+// and handles shutdown.
+class ProfilerParent final : public PProfilerParent {
+ public:
+ NS_INLINE_DECL_REFCOUNTING(ProfilerParent, final)
+
+ static mozilla::ipc::Endpoint<PProfilerChild> CreateForProcess(
+ base::ProcessId aOtherPid);
+
+#ifdef MOZ_GECKO_PROFILER
+ using SingleProcessProfilePromise =
+ MozPromise<IPCProfileAndAdditionalInformation, ResponseRejectReason,
+ true>;
+
+ struct SingleProcessProfilePromiseAndChildPid {
+ RefPtr<SingleProcessProfilePromise> profilePromise;
+ base::ProcessId childPid;
+ };
+
+ using SingleProcessProgressPromise =
+ MozPromise<GatherProfileProgress, ResponseRejectReason, true>;
+
+ // The following static methods can be called on any thread, but they are
+ // no-ops on anything other than the main thread.
+ // If called on the main thread, the call will be broadcast to all
+ // registered processes (all processes for which we have a ProfilerParent
+ // object).
+ // At the moment, the main process always calls these methods on the main
+ // thread, and that's the only process in which we need to forward these
+ // calls to other processes. The other processes will call these methods on
+ // the ProfilerChild background thread, but those processes don't need to
+ // forward these calls any further.
+
+ // Returns the profiles to expect, as promises and child pids.
+ static nsTArray<SingleProcessProfilePromiseAndChildPid> GatherProfiles();
+
+ // Send a request to get the GatherProfiles() progress update from one child
+ // process, returns a promise to be resolved with that progress.
+ // The promise RefPtr may be null if the child process is unknown.
+ // Progress may be invalid, if the request arrived after the child process
+ // had already responded to the main GatherProfile() IPC, or something went
+ // very wrong in that process.
+ static RefPtr<SingleProcessProgressPromise> RequestGatherProfileProgress(
+ base::ProcessId aChildPid);
+
+ // This will start the profiler in all child processes. The returned promise
+ // will be resolved when all child have completed their operation
+ // (successfully or not.)
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerStarted(
+ nsIProfilerStartParams* aParams);
+ static void ProfilerWillStopIfStarted();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerStopped();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerPaused();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerResumed();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerPausedSampling();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerResumedSampling();
+ static void ClearAllPages();
+
+ [[nodiscard]] static RefPtr<GenericPromise> WaitOnePeriodicSampling();
+
+ // Create a "Final" update that the Child can return to its Parent.
+ static ProfileBufferChunkManagerUpdate MakeFinalUpdate();
+
+ // True if the ProfilerParent holds a lock on this thread.
+ static bool IsLockedOnCurrentThread();
+
+ private:
+ friend class ProfileBufferGlobalController;
+ friend class ProfilerParentTracker;
+
+ explicit ProfilerParent(base::ProcessId aChildPid);
+
+ void Init();
+ void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;
+
+ void RequestChunkManagerUpdate();
+
+ base::ProcessId mChildPid;
+ nsTArray<MozPromiseHolder<SingleProcessProfilePromise>>
+ mPendingRequestedProfiles;
+ bool mDestroyed;
+#endif // MOZ_GECKO_PROFILER
+
+ private:
+ virtual ~ProfilerParent();
+};
+
+} // namespace mozilla
+
+#endif // ProfilerParent_h
diff --git a/tools/profiler/public/ProfilerRunnable.h b/tools/profiler/public/ProfilerRunnable.h
new file mode 100644
index 0000000000..b3b4e64043
--- /dev/null
+++ b/tools/profiler/public/ProfilerRunnable.h
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerRunnable_h
+#define ProfilerRunnable_h
+
+#include "GeckoProfiler.h"
+#include "nsIThreadPool.h"
+
+#if !defined(MOZ_GECKO_PROFILER) || !defined(MOZ_COLLECTING_RUNNABLE_TELEMETRY)
+# define AUTO_PROFILE_FOLLOWING_RUNNABLE(runnable)
+#else
+# define AUTO_PROFILE_FOLLOWING_RUNNABLE(runnable) \
+ mozilla::Maybe<mozilla::AutoProfileRunnable> raiiRunnableMarker; \
+ if (profiler_thread_is_being_profiled_for_markers()) { \
+ raiiRunnableMarker.emplace(runnable); \
+ }
+
+namespace mozilla {
+
+class MOZ_RAII AutoProfileRunnable {
+ public:
+ explicit AutoProfileRunnable(Runnable* aRunnable)
+ : mStartTime(TimeStamp::Now()) {
+ aRunnable->GetName(mName);
+ }
+ explicit AutoProfileRunnable(nsIRunnable* aRunnable)
+ : mStartTime(TimeStamp::Now()) {
+ nsCOMPtr<nsIThreadPool> threadPool = do_QueryInterface(aRunnable);
+ if (threadPool) {
+ // nsThreadPool::Run has its own call to AUTO_PROFILE_FOLLOWING_RUNNABLE,
+ // avoid nesting runnable markers.
+ return;
+ }
+
+ nsCOMPtr<nsINamed> named = do_QueryInterface(aRunnable);
+ if (named) {
+ named->GetName(mName);
+ }
+ }
+ explicit AutoProfileRunnable(nsACString& aName)
+ : mStartTime(TimeStamp::Now()), mName(aName) {}
+
+ ~AutoProfileRunnable() {
+ if (mName.IsEmpty()) {
+ return;
+ }
+
+ AUTO_PROFILER_LABEL("AutoProfileRunnable", PROFILER);
+ AUTO_PROFILER_STATS(AUTO_PROFILE_RUNNABLE);
+ profiler_add_marker("Runnable", ::mozilla::baseprofiler::category::OTHER,
+ MarkerTiming::IntervalUntilNowFrom(mStartTime),
+ geckoprofiler::markers::TextMarker{}, mName);
+ }
+
+ protected:
+ TimeStamp mStartTime;
+ nsAutoCString mName;
+};
+
+} // namespace mozilla
+
+#endif
+
+#endif // ProfilerRunnable_h
diff --git a/tools/profiler/public/ProfilerRustBindings.h b/tools/profiler/public/ProfilerRustBindings.h
new file mode 100644
index 0000000000..bf290838a1
--- /dev/null
+++ b/tools/profiler/public/ProfilerRustBindings.h
@@ -0,0 +1,12 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+#ifndef ProfilerRustBindings_h
+#define ProfilerRustBindings_h
+
+#include "mozilla/profiler_ffi_generated.h"
+
+// Add any non-generated support code here
+
+#endif // ProfilerRustBindings_h
diff --git a/tools/profiler/public/ProfilerState.h b/tools/profiler/public/ProfilerState.h
new file mode 100644
index 0000000000..7a9f3f5c73
--- /dev/null
+++ b/tools/profiler/public/ProfilerState.h
@@ -0,0 +1,399 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains most functions that give information about the Profiler:
+// Whether it is active or not, paused, and the selected features.
+// It is safe to include unconditionally, but uses of structs and functions must
+// be guarded by `#ifdef MOZ_GECKO_PROFILER`.
+
+#ifndef ProfilerState_h
+#define ProfilerState_h
+
+#include <mozilla/DefineEnum.h>
+#include <mozilla/EnumSet.h>
+#include "mozilla/ProfilerUtils.h"
+
+#include <functional>
+
+//---------------------------------------------------------------------------
+// Profiler features
+//---------------------------------------------------------------------------
+
+#if defined(__APPLE__) && defined(__aarch64__)
+# define POWER_HELP "Sample per process power use"
+#elif defined(__APPLE__) && defined(__x86_64__)
+# define POWER_HELP \
+ "Record the power used by the entire system with each sample."
+#elif defined(__linux__) && defined(__x86_64__)
+# define POWER_HELP \
+ "Record the power used by the entire system with each sample. " \
+ "Only available with Intel CPUs and requires setting " \
+ "the sysctl kernel.perf_event_paranoid to 0."
+
+#elif defined(_MSC_VER)
+# define POWER_HELP \
+ "Record the value of every energy meter available on the system with " \
+ "each sample. Only available on Windows 11 with Intel CPUs."
+#else
+# define POWER_HELP "Not supported on this platform."
+#endif
+
+// Higher-order macro containing all the feature info in one place. Define
+// |MACRO| appropriately to extract the relevant parts. Note that the number
+// values are used internally only and so can be changed without consequence.
+// Any changes to this list should also be applied to the feature list in
+// toolkit/components/extensions/schemas/geckoProfiler.json.
+// *** Synchronize with lists in BaseProfilerState.h and geckoProfiler.json ***
+#define PROFILER_FOR_EACH_FEATURE(MACRO) \
+ MACRO(0, "java", Java, "Profile Java code, Android only") \
+ \
+ MACRO(1, "js", JS, \
+ "Get the JS engine to expose the JS stack to the profiler") \
+ \
+ MACRO(2, "mainthreadio", MainThreadIO, "Add main thread file I/O") \
+ \
+ MACRO(3, "fileio", FileIO, \
+ "Add file I/O from all profiled threads, implies mainthreadio") \
+ \
+ MACRO(4, "fileioall", FileIOAll, \
+ "Add file I/O from all threads, implies fileio") \
+ \
+ MACRO(5, "nomarkerstacks", NoMarkerStacks, \
+ "Markers do not capture stacks, to reduce overhead") \
+ \
+ MACRO(6, "screenshots", Screenshots, \
+ "Take a snapshot of the window on every composition") \
+ \
+ MACRO(7, "seqstyle", SequentialStyle, \
+ "Disable parallel traversal in styling") \
+ \
+ MACRO(8, "stackwalk", StackWalk, \
+ "Walk the C++ stack, not available on all platforms") \
+ \
+ MACRO(9, "jsallocations", JSAllocations, \
+ "Have the JavaScript engine track allocations") \
+ \
+ MACRO(10, "nostacksampling", NoStackSampling, \
+ "Disable all stack sampling: Cancels \"js\", \"stackwalk\" and " \
+ "labels") \
+ \
+ MACRO(11, "nativeallocations", NativeAllocations, \
+ "Collect the stacks from a smaller subset of all native " \
+ "allocations, biasing towards collecting larger allocations") \
+ \
+ MACRO(12, "ipcmessages", IPCMessages, \
+ "Have the IPC layer track cross-process messages") \
+ \
+ MACRO(13, "audiocallbacktracing", AudioCallbackTracing, \
+ "Audio callback tracing") \
+ \
+ MACRO(14, "cpu", CPUUtilization, "CPU utilization") \
+ \
+ MACRO(15, "notimerresolutionchange", NoTimerResolutionChange, \
+ "Do not adjust the timer resolution for sampling, so that other " \
+ "Firefox timers do not get affected") \
+ \
+ MACRO(16, "cpuallthreads", CPUAllThreads, \
+ "Sample the CPU utilization of all registered threads") \
+ \
+ MACRO(17, "samplingallthreads", SamplingAllThreads, \
+ "Sample the stacks of all registered threads") \
+ \
+ MACRO(18, "markersallthreads", MarkersAllThreads, \
+ "Record markers from all registered threads") \
+ \
+ MACRO(19, "unregisteredthreads", UnregisteredThreads, \
+ "Discover and profile unregistered threads -- beware: expensive!") \
+ \
+ MACRO(20, "processcpu", ProcessCPU, \
+ "Sample the CPU utilization of each process") \
+ \
+ MACRO(21, "power", Power, POWER_HELP)
+// *** Synchronize with lists in BaseProfilerState.h and geckoProfiler.json ***
+
+struct ProfilerFeature {
+#define DECLARE(n_, str_, Name_, desc_) \
+ static constexpr uint32_t Name_ = (1u << n_); \
+ [[nodiscard]] static constexpr bool Has##Name_(uint32_t aFeatures) { \
+ return aFeatures & Name_; \
+ } \
+ static constexpr void Set##Name_(uint32_t& aFeatures) { \
+ aFeatures |= Name_; \
+ } \
+ static constexpr void Clear##Name_(uint32_t& aFeatures) { \
+ aFeatures &= ~Name_; \
+ }
+
+ // Define a bitfield constant, a getter, and two setters for each feature.
+ PROFILER_FOR_EACH_FEATURE(DECLARE)
+
+#undef DECLARE
+};
+
+// clang-format off
+MOZ_DEFINE_ENUM_CLASS(ProfilingState,(
+ // A callback will be invoked ...
+ AlreadyActive, // if the profiler is active when the callback is added.
+ RemovingCallback, // when the callback is removed.
+ Started, // after the profiler has started.
+ Pausing, // before the profiler is paused.
+ Resumed, // after the profiler has resumed.
+ GeneratingProfile, // before a profile is created.
+ Stopping, // before the profiler stops (unless restarting afterward).
+ ShuttingDown // before the profiler is shut down.
+));
+// clang-format on
+
+[[nodiscard]] inline static const char* ProfilingStateToString(
+ ProfilingState aProfilingState) {
+ switch (aProfilingState) {
+ case ProfilingState::AlreadyActive:
+ return "Profiler already active";
+ case ProfilingState::RemovingCallback:
+ return "Callback being removed";
+ case ProfilingState::Started:
+ return "Profiler started";
+ case ProfilingState::Pausing:
+ return "Profiler pausing";
+ case ProfilingState::Resumed:
+ return "Profiler resumed";
+ case ProfilingState::GeneratingProfile:
+ return "Generating profile";
+ case ProfilingState::Stopping:
+ return "Profiler stopping";
+ case ProfilingState::ShuttingDown:
+ return "Profiler shutting down";
+ default:
+ MOZ_ASSERT_UNREACHABLE("Unexpected ProfilingState enum value");
+ return "?";
+ }
+}
+
+using ProfilingStateSet = mozilla::EnumSet<ProfilingState>;
+
+[[nodiscard]] constexpr ProfilingStateSet AllProfilingStates() {
+ ProfilingStateSet set;
+ using Value = std::underlying_type_t<ProfilingState>;
+ for (Value stateValue = 0;
+ stateValue <= static_cast<Value>(kHighestProfilingState); ++stateValue) {
+ set += static_cast<ProfilingState>(stateValue);
+ }
+ return set;
+}
+
+// Type of callbacks to be invoked at certain state changes.
+// It must NOT call profiler_add/remove_state_change_callback().
+using ProfilingStateChangeCallback = std::function<void(ProfilingState)>;
+
+#ifndef MOZ_GECKO_PROFILER
+
+[[nodiscard]] inline bool profiler_is_active() { return false; }
+[[nodiscard]] inline bool profiler_is_active_and_unpaused() { return false; }
+[[nodiscard]] inline bool profiler_feature_active(uint32_t aFeature) {
+ return false;
+}
+[[nodiscard]] inline bool profiler_is_locked_on_current_thread() {
+ return false;
+}
+inline void profiler_add_state_change_callback(
+ ProfilingStateSet aProfilingStateSet,
+ ProfilingStateChangeCallback&& aCallback, uintptr_t aUniqueIdentifier = 0) {
+}
+inline void profiler_remove_state_change_callback(uintptr_t aUniqueIdentifier) {
+}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "mozilla/Atomics.h"
+# include "mozilla/Maybe.h"
+
+# include <stdint.h>
+
+namespace mozilla::profiler::detail {
+
+// RacyFeatures is only defined in this header file so that its methods can
+// be inlined into profiler_is_active(). Please do not use anything from the
+// detail namespace outside the profiler.
+
+// Within the profiler's code, the preferred way to check profiler activeness
+// and features is via ActivePS(). However, that requires locking gPSMutex.
+// There are some hot operations where absolute precision isn't required, so we
+// duplicate the activeness/feature state in a lock-free manner in this class.
+class RacyFeatures {
+ public:
+ static void SetActive(uint32_t aFeatures) {
+ sActiveAndFeatures = Active | aFeatures;
+ }
+
+ static void SetInactive() { sActiveAndFeatures = 0; }
+
+ static void SetPaused() { sActiveAndFeatures |= Paused; }
+
+ static void SetUnpaused() { sActiveAndFeatures &= ~Paused; }
+
+ static void SetSamplingPaused() { sActiveAndFeatures |= SamplingPaused; }
+
+ static void SetSamplingUnpaused() { sActiveAndFeatures &= ~SamplingPaused; }
+
+ [[nodiscard]] static mozilla::Maybe<uint32_t> FeaturesIfActive() {
+ if (uint32_t af = sActiveAndFeatures; af & Active) {
+ // Active, remove the Active&Paused bits to get all features.
+ return Some(af & ~(Active | Paused | SamplingPaused));
+ }
+ return Nothing();
+ }
+
+ [[nodiscard]] static mozilla::Maybe<uint32_t> FeaturesIfActiveAndUnpaused() {
+ if (uint32_t af = sActiveAndFeatures; (af & (Active | Paused)) == Active) {
+ // Active but not fully paused, remove the Active and sampling-paused bits
+ // to get all features.
+ return Some(af & ~(Active | SamplingPaused));
+ }
+ return Nothing();
+ }
+
+ // This implementation must be kept in sync with `gecko_profiler::is_active`
+ // in the Profiler Rust API.
+ [[nodiscard]] static bool IsActive() {
+ return uint32_t(sActiveAndFeatures) & Active;
+ }
+
+ [[nodiscard]] static bool IsActiveWithFeature(uint32_t aFeature) {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && (af & aFeature);
+ }
+
+ [[nodiscard]] static bool IsActiveWithoutFeature(uint32_t aFeature) {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && !(af & aFeature);
+ }
+
+ // True if profiler is active, and not fully paused.
+ // Note that periodic sampling *could* be paused!
+ // This implementation must be kept in sync with
+ // `gecko_profiler::can_accept_markers` in the Profiler Rust API.
+ [[nodiscard]] static bool IsActiveAndUnpaused() {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && !(af & Paused);
+ }
+
+ // True if profiler is active, and sampling is not paused (though generic
+ // `SetPaused()` or specific `SetSamplingPaused()`).
+ [[nodiscard]] static bool IsActiveAndSamplingUnpaused() {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && !(af & (Paused | SamplingPaused));
+ }
+
+ private:
+ static constexpr uint32_t Active = 1u << 31;
+ static constexpr uint32_t Paused = 1u << 30;
+ static constexpr uint32_t SamplingPaused = 1u << 29;
+
+// Ensure Active/Paused don't overlap with any of the feature bits.
+# define NO_OVERLAP(n_, str_, Name_, desc_) \
+ static_assert(ProfilerFeature::Name_ != SamplingPaused, \
+ "bad feature value");
+
+ PROFILER_FOR_EACH_FEATURE(NO_OVERLAP);
+
+# undef NO_OVERLAP
+
+ // We combine the active bit with the feature bits so they can be read or
+ // written in a single atomic operation. Accesses to this atomic are not
+ // recorded by web replay as they may occur at non-deterministic points.
+ static mozilla::Atomic<uint32_t, mozilla::MemoryOrdering::Relaxed>
+ sActiveAndFeatures;
+};
+
+} // namespace mozilla::profiler::detail
+
+//---------------------------------------------------------------------------
+// Get information from the profiler
+//---------------------------------------------------------------------------
+
+// Is the profiler active? Note: the return value of this function can become
+// immediately out-of-date. E.g. the profile might be active but then
+// profiler_stop() is called immediately afterward. One common and reasonable
+// pattern of usage is the following:
+//
+// if (profiler_is_active()) {
+// ExpensiveData expensiveData = CreateExpensiveData();
+// PROFILER_OPERATION(expensiveData);
+// }
+//
+// where PROFILER_OPERATION is a no-op if the profiler is inactive. In this
+// case the profiler_is_active() check is just an optimization -- it prevents
+// us calling CreateExpensiveData() unnecessarily in most cases, but the
+// expensive data will end up being created but not used if another thread
+// stops the profiler between the CreateExpensiveData() and PROFILER_OPERATION
+// calls.
+[[nodiscard]] inline bool profiler_is_active() {
+ return mozilla::profiler::detail::RacyFeatures::IsActive();
+}
+
+// Same as profiler_is_active(), but also checks if the profiler is not paused.
+[[nodiscard]] inline bool profiler_is_active_and_unpaused() {
+ return mozilla::profiler::detail::RacyFeatures::IsActiveAndUnpaused();
+}
+
+// Is the profiler active and paused? Returns false if the profiler is inactive.
+[[nodiscard]] bool profiler_is_paused();
+
+// Is the profiler active and sampling is paused? Returns false if the profiler
+// is inactive.
+[[nodiscard]] bool profiler_is_sampling_paused();
+
+// Get all the features supported by the profiler that are accepted by
+// profiler_start(). The result is the same whether the profiler is active or
+// not.
+[[nodiscard]] uint32_t profiler_get_available_features();
+
+// Returns the full feature set if the profiler is active.
+// Note: the return value can become immediately out-of-date, much like the
+// return value of profiler_is_active().
+[[nodiscard]] inline mozilla::Maybe<uint32_t> profiler_features_if_active() {
+ return mozilla::profiler::detail::RacyFeatures::FeaturesIfActive();
+}
+
+// Returns the full feature set if the profiler is active and unpaused.
+// Note: the return value can become immediately out-of-date, much like the
+// return value of profiler_is_active().
+[[nodiscard]] inline mozilla::Maybe<uint32_t>
+profiler_features_if_active_and_unpaused() {
+ return mozilla::profiler::detail::RacyFeatures::FeaturesIfActiveAndUnpaused();
+}
+
+// Check if a profiler feature (specified via the ProfilerFeature type) is
+// active. Returns false if the profiler is inactive. Note: the return value
+// can become immediately out-of-date, much like the return value of
+// profiler_is_active().
+[[nodiscard]] bool profiler_feature_active(uint32_t aFeature);
+
+// Check if the profiler is active without a feature (specified via the
+// ProfilerFeature type). Note: the return value can become immediately
+// out-of-date, much like the return value of profiler_is_active().
+[[nodiscard]] bool profiler_active_without_feature(uint32_t aFeature);
+
+// Returns true if any of the profiler mutexes are currently locked *on the
+// current thread*. This may be used by re-entrant code that may call profiler
+// functions while the same of a different profiler mutex is locked, which could
+// deadlock.
+[[nodiscard]] bool profiler_is_locked_on_current_thread();
+
+// Install a callback to be invoked at any of the given profiling state changes.
+// An optional non-zero identifier may be given, to allow later removal of the
+// callback, the caller is responsible for making sure it's really unique (e.g.,
+// by using a pointer to an object it owns.)
+void profiler_add_state_change_callback(
+ ProfilingStateSet aProfilingStateSet,
+ ProfilingStateChangeCallback&& aCallback, uintptr_t aUniqueIdentifier = 0);
+
+// Remove the callback with the given non-zero identifier.
+void profiler_remove_state_change_callback(uintptr_t aUniqueIdentifier);
+
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerState_h
diff --git a/tools/profiler/public/ProfilerThreadPlatformData.h b/tools/profiler/public/ProfilerThreadPlatformData.h
new file mode 100644
index 0000000000..c243a8ee02
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadPlatformData.h
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadPlatformData_h
+#define ProfilerThreadPlatformData_h
+
+#include "mozilla/ProfilerUtils.h"
+
+#if defined(__APPLE__)
+# include <mach/mach_types.h>
+#elif defined(__linux__) || defined(__ANDROID__) || defined(__FreeBSD__)
+# include "mozilla/Maybe.h"
+# include <time.h>
+#endif
+
+namespace mozilla::profiler {
+
+class PlatformData {
+#if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(MOZ_GECKO_PROFILER)
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId);
+ ~PlatformData();
+
+ // Faking win32's HANDLE, because #including "windows.h" here causes trouble
+ // (e.g., it #defines `Yield` as nothing!)
+ // This type is static_check'ed against HANDLE in platform-win32.cpp.
+ using WindowsHandle = void*;
+ WindowsHandle ProfiledThread() const { return mProfiledThread; }
+
+ private:
+ WindowsHandle mProfiledThread;
+#elif defined(__APPLE__) && defined(MOZ_GECKO_PROFILER)
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId);
+ ~PlatformData();
+ thread_act_t ProfiledThread() const { return mProfiledThread; }
+
+ private:
+ // Note: for mProfiledThread Mach primitives are used instead of pthread's
+ // because the latter doesn't provide thread manipulation primitives
+ // required. For details, consult "Mac OS X Internals" book, Section 7.3.
+ thread_act_t mProfiledThread;
+#elif (defined(__linux__) || defined(__ANDROID__) || defined(__FreeBSD__)) && \
+ defined(MOZ_GECKO_PROFILER)
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId);
+ ~PlatformData();
+ // Clock Id for this profiled thread. `Nothing` if `pthread_getcpuclockid`
+ // failed (e.g., if the system doesn't support per-thread clocks).
+ Maybe<clockid_t> GetClockId() const { return mClockId; }
+
+ private:
+ Maybe<clockid_t> mClockId;
+#else
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId) {}
+#endif
+};
+
+/**
+ * Return the number of nanoseconds of CPU time used since thread start.
+ *
+ * @return true on success.
+ */
+#if defined(MOZ_GECKO_PROFILER)
+bool GetCpuTimeSinceThreadStartInNs(uint64_t* aResult,
+ const PlatformData& aPlatformData);
+#else
+static inline bool GetCpuTimeSinceThreadStartInNs(
+ uint64_t* aResult, const PlatformData& aPlatformData) {
+ return false;
+}
+#endif
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadPlatformData_h
diff --git a/tools/profiler/public/ProfilerThreadRegistration.h b/tools/profiler/public/ProfilerThreadRegistration.h
new file mode 100644
index 0000000000..3fb931987d
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistration.h
@@ -0,0 +1,367 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadRegistration_h
+#define ProfilerThreadRegistration_h
+
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/ProfilerThreadRegistrationData.h"
+#include "mozilla/ThreadLocal.h"
+
+namespace mozilla::profiler {
+
+class ThreadRegistry;
+
+// To use as RAII object, or through RegisterThread/UnregisterThread.
+// Automatically registers itself with TLS and Profiler.
+// It can be safely nested, but nested instances are just ignored.
+// See Get.../With... functions for how to access the data.
+class ThreadRegistration {
+ private:
+ using DataMutex = baseprofiler::detail::BaseProfilerMutex;
+ using DataLock = baseprofiler::detail::BaseProfilerAutoLock;
+
+ public:
+ // Constructor to use as RAII auto-registration object.
+ // It stores itself in the TLS (its effective owner), and gives its pointer to
+ // the Profiler.
+ ThreadRegistration(const char* aName, const void* aStackTop);
+
+ // Destruction reverses construction: Remove pointer from the Profiler (except
+ // for the main thread, because it should be done by the profiler itself) and
+ // from the TLS.
+ ~ThreadRegistration();
+
+ // Manual construction&destruction, if RAII is not possible or too expensive
+ // in stack space.
+ // RegisterThread() *must* be paired with exactly one UnregisterThread() on
+ // the same thread. (Extra UnregisterThread() calls are handled safely, but
+ // they may cause profiling of this thread to stop earlier than expected.)
+ static ProfilingStack* RegisterThread(const char* aName,
+ const void* aStackTop);
+ static void UnregisterThread();
+
+ [[nodiscard]] static bool IsRegistered() { return GetFromTLS(); }
+
+ // Prevent copies&moves.
+ ThreadRegistration(const ThreadRegistration&) = delete;
+ ThreadRegistration& operator=(const ThreadRegistration&) = delete;
+
+ // Aliases to data accessors (removing the ThreadRegistration prefix).
+
+ using UnlockedConstReader = ThreadRegistrationUnlockedConstReader;
+ using UnlockedConstReaderAndAtomicRW =
+ ThreadRegistrationUnlockedConstReaderAndAtomicRW;
+ using UnlockedRWForLockedProfiler =
+ ThreadRegistrationUnlockedRWForLockedProfiler;
+ using UnlockedReaderAndAtomicRWOnThread =
+ ThreadRegistrationUnlockedReaderAndAtomicRWOnThread;
+ using LockedRWFromAnyThread = ThreadRegistrationLockedRWFromAnyThread;
+ using LockedRWOnThread = ThreadRegistrationLockedRWOnThread;
+
+ // On-thread access from the TLS, providing the following data accessors:
+ // UnlockedConstReader, UnlockedConstReaderAndAtomicRW,
+ // UnlockedRWForLockedProfiler, UnlockedReaderAndAtomicRWOnThread, and
+ // LockedRWOnThread.
+ // (See ThreadRegistry class for OFF-thread access.)
+
+ // Reference-like class pointing at the ThreadRegistration for the current
+ // thread.
+ class OnThreadRef {
+ public:
+ // const UnlockedConstReader
+
+ [[nodiscard]] const UnlockedConstReader& UnlockedConstReaderCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReader(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderCRef());
+ }
+
+ // const UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] const UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWCRef());
+ }
+
+ // UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWRef());
+ }
+
+ // const UnlockedRWForLockedProfiler
+
+ [[nodiscard]] const UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerCRef());
+ }
+
+ // UnlockedRWForLockedProfiler
+
+ [[nodiscard]] UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerRef());
+ }
+
+ // const UnlockedReaderAndAtomicRWOnThread
+
+ [[nodiscard]] const UnlockedReaderAndAtomicRWOnThread&
+ UnlockedReaderAndAtomicRWOnThreadCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedReaderAndAtomicRWOnThread(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedReaderAndAtomicRWOnThreadCRef());
+ }
+
+ // UnlockedReaderAndAtomicRWOnThread
+
+ [[nodiscard]] UnlockedReaderAndAtomicRWOnThread&
+ UnlockedReaderAndAtomicRWOnThreadRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedReaderAndAtomicRWOnThread(F&& aF) {
+ return std::forward<F>(aF)(UnlockedReaderAndAtomicRWOnThreadRef());
+ }
+
+ // const LockedRWOnThread through ConstRWOnThreadWithLock
+
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ class ConstRWOnThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWOnThread& DataCRef() const {
+ return mLockedRWOnThread;
+ }
+ [[nodiscard]] const LockedRWOnThread* operator->() const {
+ return &mLockedRWOnThread;
+ }
+
+ private:
+ friend class OnThreadRef;
+ ConstRWOnThreadWithLock(const LockedRWOnThread& aLockedRWOnThread,
+ DataMutex& aDataMutex)
+ : mLockedRWOnThread(aLockedRWOnThread), mDataLock(aDataMutex) {}
+
+ const LockedRWOnThread& mLockedRWOnThread;
+ DataLock mDataLock;
+ };
+
+ [[nodiscard]] ConstRWOnThreadWithLock ConstLockedRWOnThread() const {
+ return ConstRWOnThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithConstLockedRWOnThread(F&& aF) const {
+ ConstRWOnThreadWithLock lockedData = ConstLockedRWOnThread();
+ return std::forward<F>(aF)(lockedData.DataCRef());
+ }
+
+ // LockedRWOnThread through RWOnThreadWithLock
+
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ class RWOnThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWOnThread& DataCRef() const {
+ return mLockedRWOnThread;
+ }
+ [[nodiscard]] LockedRWOnThread& DataRef() { return mLockedRWOnThread; }
+ [[nodiscard]] const LockedRWOnThread* operator->() const {
+ return &mLockedRWOnThread;
+ }
+ [[nodiscard]] LockedRWOnThread* operator->() {
+ return &mLockedRWOnThread;
+ }
+
+ private:
+ friend class OnThreadRef;
+ RWOnThreadWithLock(LockedRWOnThread& aLockedRWOnThread,
+ DataMutex& aDataMutex)
+ : mLockedRWOnThread(aLockedRWOnThread), mDataLock(aDataMutex) {}
+
+ LockedRWOnThread& mLockedRWOnThread;
+ DataLock mDataLock;
+ };
+
+ [[nodiscard]] RWOnThreadWithLock GetLockedRWOnThread() {
+ return RWOnThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithLockedRWOnThread(F&& aF) {
+ RWOnThreadWithLock lockedData = GetLockedRWOnThread();
+ return std::forward<F>(aF)(lockedData.DataRef());
+ }
+
+ // This is needed to allow OnThreadPtr::operator-> to return a temporary
+ // OnThreadRef object, for which `->` must work; Here it provides a pointer
+ // to itself, so that the next follow-up `->` will work as member accessor.
+ OnThreadRef* operator->() && { return this; }
+
+ private:
+ // Only ThreadRegistration should construct an OnThreadRef.
+ friend class ThreadRegistration;
+ explicit OnThreadRef(ThreadRegistration& aThreadRegistration)
+ : mThreadRegistration(&aThreadRegistration) {}
+
+ // Allow ThreadRegistry to read mThreadRegistration.
+ friend class ThreadRegistry;
+
+ // Guaranted to be non-null by construction from a reference.
+ ThreadRegistration* mThreadRegistration;
+ };
+
+ // Pointer-like class pointing at the ThreadRegistration for the current
+ // thread, if one was registered.
+ class OnThreadPtr {
+ public:
+ [[nodiscard]] explicit operator bool() const { return mThreadRegistration; }
+
+ // Note that this resolves to a temporary OnThreadRef object, which has all
+ // the allowed data accessors.
+ [[nodiscard]] OnThreadRef operator*() const {
+ MOZ_ASSERT(mThreadRegistration);
+ return OnThreadRef(*mThreadRegistration);
+ }
+
+ // Note that this resolves to a temporary OnThreadRef object, which also
+ // overloads operator-> and has all the allowed data accessors.
+ [[nodiscard]] OnThreadRef operator->() const {
+ MOZ_ASSERT(mThreadRegistration);
+ return OnThreadRef(*mThreadRegistration);
+ }
+
+ private:
+ friend class ThreadRegistration;
+ explicit OnThreadPtr(ThreadRegistration* aThreadRegistration)
+ : mThreadRegistration(aThreadRegistration) {}
+
+ ThreadRegistration* mThreadRegistration;
+ };
+
+ [[nodiscard]] static OnThreadPtr GetOnThreadPtr() {
+ return OnThreadPtr{GetFromTLS()};
+ }
+
+ // Call `F(OnThreadRef)`.
+ template <typename F>
+ static void WithOnThreadRef(F&& aF) {
+ const auto* tls = GetTLS();
+ if (tls) {
+ ThreadRegistration* tr = tls->get();
+ if (tr) {
+ std::forward<F>(aF)(OnThreadRef{*tr});
+ }
+ }
+ }
+
+ // Call `F(OnThreadRef)`.
+ template <typename F, typename FallbackReturn>
+ [[nodiscard]] static auto WithOnThreadRefOr(F&& aF,
+ FallbackReturn&& aFallbackReturn)
+ -> decltype(std::forward<F>(aF)(std::declval<OnThreadRef>())) {
+ const auto* tls = GetTLS();
+ if (tls) {
+ ThreadRegistration* tr = tls->get();
+ if (tr) {
+ return std::forward<F>(aF)(OnThreadRef{*tr});
+ }
+ }
+ return std::forward<FallbackReturn>(aFallbackReturn);
+ }
+
+ [[nodiscard]] static bool IsDataMutexLockedOnCurrentThread() {
+ if (const ThreadRegistration* tr = GetFromTLS(); tr) {
+ return tr->mDataMutex.IsLockedOnCurrentThread();
+ }
+ return false;
+ }
+
+ size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const {
+ DataLock lock(mDataMutex);
+ return mData.SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ // aMallocSizeOf can only be used on head-allocated objects. Stack
+ // allocations and static objects are not counted.
+ return (mIsOnHeap ? aMallocSizeOf(this) : 0) +
+ SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ private:
+ friend class ThreadRegistry;
+
+ // This is what is embedded inside ThreadRegistration.
+ // References to sub-classes will be provided, to limit access as appropriate.
+ class EmbeddedData final : public LockedRWOnThread {
+ private:
+ // Only ThreadRegistration can construct (its embedded) `mData`.
+ friend class ThreadRegistration;
+ EmbeddedData(const char* aName, const void* aStackTop)
+ : LockedRWOnThread(aName, aStackTop) {}
+ };
+ EmbeddedData mData;
+
+ // Used when writing on self thread, and for any access from any thread.
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ mutable DataMutex mDataMutex;
+
+ // In case of nested (non-RAII) registrations. Only accessed on thread.
+ int mOtherRegistrations = 0;
+
+ // Set to true if allocated by `RegisterThread()`. Otherwise we assume that it
+ // is on the stack.
+ bool mIsOnHeap = false;
+
+ // Only accessed by ThreadRegistry on this thread.
+ bool mIsRegistryLockedSharedOnThisThread = false;
+
+ static MOZ_THREAD_LOCAL(ThreadRegistration*) tlsThreadRegistration;
+
+ [[nodiscard]] static decltype(tlsThreadRegistration)* GetTLS() {
+ static const bool initialized = tlsThreadRegistration.init();
+ return initialized ? &tlsThreadRegistration : nullptr;
+ }
+
+ [[nodiscard]] static ThreadRegistration* GetFromTLS() {
+ const auto tls = GetTLS();
+ return tls ? tls->get() : nullptr;
+ }
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistration_h
diff --git a/tools/profiler/public/ProfilerThreadRegistrationData.h b/tools/profiler/public/ProfilerThreadRegistrationData.h
new file mode 100644
index 0000000000..7c14290e4c
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistrationData.h
@@ -0,0 +1,537 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains classes that hold data related to thread profiling:
+// Data members are stored `protected` in `ThreadRegistrationData`.
+// Non-virtual sub-classes of ProfilerThreadRegistrationData provide layers of
+// public accessors to subsets of the data. Each level builds on the previous
+// one and adds further access to more data, but always with the appropriate
+// guards where necessary.
+// These classes have protected constructors, so only some trusted classes
+// `ThreadRegistration` and `ThreadRegistry` will be able to construct them, and
+// then give limited access depending on who asks (the owning thread or another
+// one), and how much data they actually need.
+//
+// The hierarchy is, from base to most derived:
+// - ThreadRegistrationData
+// - ThreadRegistrationUnlockedConstReader
+// - ThreadRegistrationUnlockedConstReaderAndAtomicRW
+// - ThreadRegistrationUnlockedRWForLockedProfiler
+// - ThreadRegistrationUnlockedReaderAndAtomicRWOnThread
+// - ThreadRegistrationLockedRWFromAnyThread
+// - ThreadRegistrationLockedRWOnThread
+// - ThreadRegistration::EmbeddedData (actual data member in ThreadRegistration)
+//
+// Tech detail: These classes need to be a single hierarchy so that
+// `ThreadRegistration` can contain the most-derived class, and from there can
+// publish references to base classes without relying on Undefined Behavior.
+// (It's not allowed to have some object and give a reference to a sub-class,
+// unless that object was *really* constructed as that sub-class at least, even
+// if that sub-class only adds member functions!)
+// And where appropriate, these references will come along with the required
+// lock.
+
+#ifndef ProfilerThreadRegistrationData_h
+#define ProfilerThreadRegistrationData_h
+
+#include "js/ProfilingFrameIterator.h"
+#include "js/ProfilingStack.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/ProfilerThreadPlatformData.h"
+#include "mozilla/ProfilerThreadRegistrationInfo.h"
+#include "nsCOMPtr.h"
+#include "nsIThread.h"
+
+class ProfiledThreadData;
+class PSAutoLock;
+struct JSContext;
+
+// Enum listing which profiling features are active for a single thread.
+enum class ThreadProfilingFeatures : uint32_t {
+ // The thread is not being profiled at all (either the profiler is not
+ // running, or this thread is not examined during profiling.)
+ NotProfiled = 0u,
+
+ // Single features, binary exclusive. May be `Combine()`d.
+ CPUUtilization = 1u << 0,
+ Sampling = 1u << 1,
+ Markers = 1u << 2,
+
+ // All possible features. Usually used as a mask to see if any feature is
+ // active at a given time.
+ Any = CPUUtilization | Sampling | Markers
+};
+
+// Binary OR of one of more ThreadProfilingFeatures, to mix all arguments.
+template <typename... Ts>
+[[nodiscard]] constexpr ThreadProfilingFeatures Combine(
+ ThreadProfilingFeatures a1, Ts... as) {
+ static_assert((true && ... &&
+ std::is_same_v<std::remove_cv_t<std::remove_reference_t<Ts>>,
+ ThreadProfilingFeatures>));
+ return static_cast<ThreadProfilingFeatures>(
+ (static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(a1) | ... |
+ static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(as)));
+}
+
+// Binary AND of one of more ThreadProfilingFeatures, to find features common to
+// all arguments.
+template <typename... Ts>
+[[nodiscard]] constexpr ThreadProfilingFeatures Intersect(
+ ThreadProfilingFeatures a1, Ts... as) {
+ static_assert((true && ... &&
+ std::is_same_v<std::remove_cv_t<std::remove_reference_t<Ts>>,
+ ThreadProfilingFeatures>));
+ return static_cast<ThreadProfilingFeatures>(
+ (static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(a1) & ... &
+ static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(as)));
+}
+
+// Are there features in common between the two given sets?
+// Mostly useful to test if any of a set of features is present in another set.
+template <typename... Ts>
+[[nodiscard]] constexpr bool DoFeaturesIntersect(ThreadProfilingFeatures a1,
+ ThreadProfilingFeatures a2) {
+ return Intersect(a1, a2) != ThreadProfilingFeatures::NotProfiled;
+}
+
+namespace mozilla::profiler {
+
+// All data members related to thread profiling are stored here.
+// See derived classes below, which give limited unlocked/locked read/write
+// access in different situations, and will be available through
+// ThreadRegistration and ThreadRegistry.
+class ThreadRegistrationData {
+ public:
+ // No public accessors here. See derived classes for accessors, and
+ // Get.../With... functions for who can use these accessors.
+
+ size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const {
+ // Not including data that is not fully owned here.
+ return 0;
+ }
+
+ size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ static constexpr size_t MAX_JS_FRAMES = 1024;
+ using JsFrame = JS::ProfilingFrameIterator::Frame;
+ using JsFrameBuffer = JsFrame[MAX_JS_FRAMES];
+
+ // `protected` to allow derived classes to read all data members.
+ protected:
+ ThreadRegistrationData(const char* aName, const void* aStackTop);
+
+#ifdef DEBUG
+ // Destructor only used to check invariants.
+ ~ThreadRegistrationData() {
+ MOZ_ASSERT((mProfilingFeatures != ThreadProfilingFeatures::NotProfiled) ==
+ !!mProfiledThreadData);
+ MOZ_ASSERT(!mProfiledThreadData,
+ "mProfiledThreadData pointer should have been reset before "
+ "~ThreadRegistrationData");
+ }
+#endif // DEBUG
+
+ // Permanent thread information.
+ // Set at construction, read from anywhere, moved-from at destruction.
+ ThreadRegistrationInfo mInfo;
+
+ // Contains profiler labels and JS frames.
+ // Deep-written on thread only, deep-read from thread and suspended thread.
+ ProfilingStack mProfilingStack;
+
+ // In practice, only read from thread and suspended thread.
+ PlatformData mPlatformData;
+
+ // Only read from thread and suspended thread.
+ const void* const mStackTop;
+
+ // Written from thread, read from thread and suspended thread.
+ nsCOMPtr<nsIThread> mThread;
+
+ // If this is a JS thread, this is its JSContext, which is required for any
+ // JS sampling.
+ // Written from thread, read from thread and suspended thread.
+ JSContext* mJSContext = nullptr;
+
+ // If mJSContext is not null AND the thread is being profiled, this points at
+ // the start of a JsFrameBuffer to be used for on-thread synchronous sampling.
+ JsFrame* mJsFrameBuffer = nullptr;
+
+ // The profiler needs to start and stop JS sampling of JS threads at various
+ // times. However, the JS engine can only do the required actions on the
+ // JS thread itself ("on-thread"), not from another thread ("off-thread").
+ // Therefore, we have the following two-step process.
+ //
+ // - The profiler requests (on-thread or off-thread) that the JS sampling be
+ // started/stopped, by changing mJSSampling to the appropriate REQUESTED
+ // state.
+ //
+ // - The relevant JS thread polls (on-thread) for changes to mJSSampling.
+ // When it sees a REQUESTED state, it performs the appropriate actions to
+ // actually start/stop JS sampling, and changes mJSSampling out of the
+ // REQUESTED state.
+ //
+ // The state machine is as follows.
+ //
+ // INACTIVE --> ACTIVE_REQUESTED
+ // ^ ^ |
+ // | _/ |
+ // | _/ |
+ // | / |
+ // | v v
+ // INACTIVE_REQUESTED <-- ACTIVE
+ //
+ // The polling is done in the following two ways.
+ //
+ // - Via the interrupt callback mechanism; the JS thread must call
+ // profiler_js_interrupt_callback() from its own interrupt callback.
+ // This is how sampling must be started/stopped for threads where the
+ // request was made off-thread.
+ //
+ // - When {Start,Stop}JSSampling() is called on-thread, we can immediately
+ // follow it with a PollJSSampling() call to avoid the delay between the
+ // two steps. Likewise, setJSContext() calls PollJSSampling().
+ //
+ // One non-obvious thing about all this: these JS sampling requests are made
+ // on all threads, even non-JS threads. mContext needs to also be set (via
+ // setJSContext(), which can only happen for JS threads) for any JS sampling
+ // to actually happen.
+ //
+ enum {
+ INACTIVE = 0,
+ ACTIVE_REQUESTED = 1,
+ ACTIVE = 2,
+ INACTIVE_REQUESTED = 3,
+ } mJSSampling = INACTIVE;
+
+ uint32_t mJSFlags = 0;
+
+ // Flags to conveniently track various JS instrumentations.
+ enum class JSInstrumentationFlags {
+ StackSampling = 0x1,
+ Allocations = 0x2,
+ };
+
+ [[nodiscard]] bool JSAllocationsEnabled() const {
+ return mJSFlags & uint32_t(JSInstrumentationFlags::Allocations);
+ }
+
+ // The following members may be modified from another thread.
+ // They need to be atomic, because LockData() does not prevent reads from
+ // the owning thread.
+
+ // mSleep tracks whether the thread is sleeping, and if so, whether it has
+ // been previously observed. This is used for an optimization: in some
+ // cases, when a thread is asleep, we duplicate the previous sample, which
+ // is cheaper than taking a new sample.
+ //
+ // mSleep is atomic because it is accessed from multiple threads.
+ //
+ // - It is written only by this thread, via setSleeping() and setAwake().
+ //
+ // - It is read by SamplerThread::Run().
+ //
+ // There are two cases where racing between threads can cause an issue.
+ //
+ // - If CanDuplicateLastSampleDueToSleep() returns false but that result is
+ // invalidated before being acted upon, we will take a full sample
+ // unnecessarily. This is additional work but won't cause any correctness
+ // issues. (In actual fact, this case is impossible. In order to go from
+ // CanDuplicateLastSampleDueToSleep() returning false to it returning true
+ // requires an intermediate call to it in order for mSleep to go from
+ // SLEEPING_NOT_OBSERVED to SLEEPING_OBSERVED.)
+ //
+ // - If CanDuplicateLastSampleDueToSleep() returns true but that result is
+ // invalidated before being acted upon -- i.e. the thread wakes up before
+ // DuplicateLastSample() is called -- we will duplicate the previous
+ // sample. This is inaccurate, but only slightly... we will effectively
+ // treat the thread as having slept a tiny bit longer than it really did.
+ //
+ // This latter inaccuracy could be avoided by moving the
+ // CanDuplicateLastSampleDueToSleep() check within the thread-freezing code,
+ // e.g. the section where Tick() is called. But that would reduce the
+ // effectiveness of the optimization because more code would have to be run
+ // before we can tell that duplication is allowed.
+ //
+ static const int AWAKE = 0;
+ static const int SLEEPING_NOT_OBSERVED = 1;
+ static const int SLEEPING_OBSERVED = 2;
+ // Read&written from thread and suspended thread.
+ Atomic<int> mSleep{AWAKE};
+ Atomic<uint64_t> mThreadCpuTimeInNsAtLastSleep{0};
+
+#ifdef NIGHTLY_BUILD
+ // The first wake is the thread creation.
+ Atomic<uint64_t, MemoryOrdering::Relaxed> mWakeCount{1};
+ mutable baseprofiler::detail::BaseProfilerMutex mRecordWakeCountMutex;
+ mutable uint64_t mAlreadyRecordedWakeCount = 0;
+ mutable uint64_t mAlreadyRecordedCpuTimeInMs = 0;
+#endif
+
+ // Is this thread currently being profiled, and with which features?
+ // Written from profiler, read from any thread.
+ // Invariant: `!!mProfilingFeatures == !!mProfiledThreadData` (set together.)
+ Atomic<ThreadProfilingFeatures, MemoryOrdering::Relaxed> mProfilingFeatures{
+ ThreadProfilingFeatures::NotProfiled};
+
+ // If the profiler is active and this thread is selected for profiling, this
+ // points at the relevant ProfiledThreadData.
+ // Fully controlled by the profiler.
+ // Invariant: `!!mProfilingFeatures == !!mProfiledThreadData` (set together).
+ ProfiledThreadData* mProfiledThreadData = nullptr;
+};
+
+// Accessing const data from any thread.
+class ThreadRegistrationUnlockedConstReader : public ThreadRegistrationData {
+ public:
+ [[nodiscard]] const ThreadRegistrationInfo& Info() const { return mInfo; }
+
+ [[nodiscard]] const PlatformData& PlatformDataCRef() const {
+ return mPlatformData;
+ }
+
+ [[nodiscard]] const void* StackTop() const { return mStackTop; }
+
+ protected:
+ ThreadRegistrationUnlockedConstReader(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationData(aName, aStackTop) {}
+};
+
+// Accessing atomic data from any thread.
+class ThreadRegistrationUnlockedConstReaderAndAtomicRW
+ : public ThreadRegistrationUnlockedConstReader {
+ public:
+ [[nodiscard]] const ProfilingStack& ProfilingStackCRef() const {
+ return mProfilingStack;
+ }
+ [[nodiscard]] ProfilingStack& ProfilingStackRef() { return mProfilingStack; }
+
+ // Similar to `profiler_is_active()`, this atomic flag may become out-of-date.
+ // It should only be used as an indication to know whether this thread is
+ // probably being profiled (with some specific features), to avoid doing
+ // expensive operations otherwise. Edge cases:
+ // - This thread could get `NotProfiled`, but the profiler has just started,
+ // so some very early data may be missing. No real impact on profiling.
+ // - This thread could see profiled features, but the profiled has just
+ // stopped, so some some work will be done and then discarded when finally
+ // attempting to write to the buffer. No impact on profiling.
+ // - This thread could see profiled features, but the profiler will quickly
+ // stop and restart, so this thread will write information relevant to the
+ // previous profiling session. Very rare, and little impact on profiling.
+ [[nodiscard]] ThreadProfilingFeatures ProfilingFeatures() const {
+ return mProfilingFeatures;
+ }
+
+ // Call this whenever the current thread sleeps. Calling it twice in a row
+ // without an intervening setAwake() call is an error.
+ void SetSleeping() {
+ MOZ_ASSERT(mSleep == AWAKE);
+ mSleep = SLEEPING_NOT_OBSERVED;
+ }
+
+ // Call this whenever the current thread wakes. Calling it twice in a row
+ // without an intervening setSleeping() call is an error.
+ void SetAwake() {
+ MOZ_ASSERT(mSleep != AWAKE);
+ mSleep = AWAKE;
+#ifdef NIGHTLY_BUILD
+ ++mWakeCount;
+#endif
+ }
+
+ // Returns the CPU time used by the thread since the previous call to this
+ // method or since the thread was started if this is the first call.
+ uint64_t GetNewCpuTimeInNs() {
+ uint64_t newCpuTimeNs;
+ if (!GetCpuTimeSinceThreadStartInNs(&newCpuTimeNs, PlatformDataCRef())) {
+ newCpuTimeNs = 0;
+ }
+ uint64_t before = mThreadCpuTimeInNsAtLastSleep;
+ uint64_t result =
+ MOZ_LIKELY(newCpuTimeNs > before) ? newCpuTimeNs - before : 0;
+ mThreadCpuTimeInNsAtLastSleep = newCpuTimeNs;
+ return result;
+ }
+
+#ifdef NIGHTLY_BUILD
+ void RecordWakeCount() const;
+#endif
+
+ // This is called on every profiler restart. Put things that should happen
+ // at that time here.
+ void ReinitializeOnResume() {
+ // This is needed to cause an initial sample to be taken from sleeping
+ // threads that had been observed prior to the profiler stopping and
+ // restarting. Otherwise sleeping threads would not have any samples to
+ // copy forward while sleeping.
+ (void)mSleep.compareExchange(SLEEPING_OBSERVED, SLEEPING_NOT_OBSERVED);
+ }
+
+ // This returns true for the second and subsequent calls in each sleep
+ // cycle, so that the sampler can skip its full sampling and reuse the first
+ // asleep sample instead.
+ [[nodiscard]] bool CanDuplicateLastSampleDueToSleep() {
+ if (mSleep == AWAKE) {
+ return false;
+ }
+ if (mSleep.compareExchange(SLEEPING_NOT_OBSERVED, SLEEPING_OBSERVED)) {
+ return false;
+ }
+ return true;
+ }
+
+ [[nodiscard]] bool IsSleeping() const { return mSleep != AWAKE; }
+
+ protected:
+ ThreadRegistrationUnlockedConstReaderAndAtomicRW(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedConstReader(aName, aStackTop) {}
+};
+
+// Like above, with special PSAutoLock-guarded accessors.
+class ThreadRegistrationUnlockedRWForLockedProfiler
+ : public ThreadRegistrationUnlockedConstReaderAndAtomicRW {
+ public:
+ // IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT!
+ // Only add functions that take a `const PSAutoLock&` proof-of-lock.
+ // (Because there is no other lock.)
+
+ [[nodiscard]] const ProfiledThreadData* GetProfiledThreadData(
+ const PSAutoLock&) const {
+ return mProfiledThreadData;
+ }
+
+ [[nodiscard]] ProfiledThreadData* GetProfiledThreadData(const PSAutoLock&) {
+ return mProfiledThreadData;
+ }
+
+ protected:
+ ThreadRegistrationUnlockedRWForLockedProfiler(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedConstReaderAndAtomicRW(aName, aStackTop) {}
+};
+
+// Reading data, unlocked from the thread, or locked otherwise.
+// This data MUST only be written from the thread with lock (i.e., in
+// LockedRWOnThread through RWOnThreadWithLock.)
+class ThreadRegistrationUnlockedReaderAndAtomicRWOnThread
+ : public ThreadRegistrationUnlockedRWForLockedProfiler {
+ public:
+ // IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT!
+ // Non-atomic members read here MUST be written from LockedRWOnThread (to
+ // guarantee that they are only modified on this thread.)
+
+ [[nodiscard]] JSContext* GetJSContext() const { return mJSContext; }
+
+ protected:
+ ThreadRegistrationUnlockedReaderAndAtomicRWOnThread(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedRWForLockedProfiler(aName, aStackTop) {}
+};
+
+// Accessing locked data from the thread, or from any thread through the locked
+// profiler:
+
+// Like above, and profiler can also read&write mutex-protected members.
+class ThreadRegistrationLockedRWFromAnyThread
+ : public ThreadRegistrationUnlockedReaderAndAtomicRWOnThread {
+ public:
+ void SetProfilingFeaturesAndData(ThreadProfilingFeatures aProfilingFeatures,
+ ProfiledThreadData* aProfiledThreadData,
+ const PSAutoLock&);
+ void ClearProfilingFeaturesAndData(const PSAutoLock&);
+
+ // Not null when JSContext is not null AND this thread is being profiled.
+ // Points at the start of JsFrameBuffer.
+ [[nodiscard]] JsFrame* GetJsFrameBuffer() const { return mJsFrameBuffer; }
+
+ [[nodiscard]] const nsCOMPtr<nsIEventTarget> GetEventTarget() const {
+ return mThread;
+ }
+
+ void ResetMainThread(nsIThread* aThread) { mThread = aThread; }
+
+ // aDelay is the time the event that is currently running on the thread was
+ // queued before starting to run (if a PrioritizedEventQueue
+ // (i.e. MainThread), this will be 0 for any event at a lower priority
+ // than Input).
+ // aRunning is the time the event has been running. If no event is running
+ // these will both be TimeDuration() (i.e. 0). Both are out params, and are
+ // always set. Their initial value is discarded.
+ void GetRunningEventDelay(const TimeStamp& aNow, TimeDuration& aDelay,
+ TimeDuration& aRunning) {
+ if (mThread) { // can be null right at the start of a process
+ TimeStamp start;
+ mThread->GetRunningEventDelay(&aDelay, &start);
+ if (!start.IsNull()) {
+ // Note: the timestamp used here will be from when we started to
+ // suspend and sample the thread; which is also the timestamp
+ // associated with the sample.
+ aRunning = aNow - start;
+ return;
+ }
+ }
+ aDelay = TimeDuration();
+ aRunning = TimeDuration();
+ }
+
+ // Request that this thread start JS sampling. JS sampling won't actually
+ // start until a subsequent PollJSSampling() call occurs *and* mContext has
+ // been set.
+ void StartJSSampling(uint32_t aJSFlags) {
+ // This function runs on-thread or off-thread.
+
+ MOZ_RELEASE_ASSERT(mJSSampling == INACTIVE ||
+ mJSSampling == INACTIVE_REQUESTED);
+ mJSSampling = ACTIVE_REQUESTED;
+ mJSFlags = aJSFlags;
+ }
+
+ // Request that this thread stop JS sampling. JS sampling won't actually
+ // stop until a subsequent PollJSSampling() call occurs.
+ void StopJSSampling() {
+ // This function runs on-thread or off-thread.
+
+ MOZ_RELEASE_ASSERT(mJSSampling == ACTIVE ||
+ mJSSampling == ACTIVE_REQUESTED);
+ mJSSampling = INACTIVE_REQUESTED;
+ }
+
+ protected:
+ ThreadRegistrationLockedRWFromAnyThread(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedReaderAndAtomicRWOnThread(aName, aStackTop) {}
+};
+
+// Accessing data, locked, from the thread.
+// If any non-atomic data is readable from UnlockedReaderAndAtomicRWOnThread,
+// it must be written from here, and not in base classes: Since this data is
+// only written on the thread, it can be read from the same thread without
+// lock; but writing must be locked so that other threads can safely read it,
+// typically from LockedRWFromAnyThread.
+class ThreadRegistrationLockedRWOnThread
+ : public ThreadRegistrationLockedRWFromAnyThread {
+ public:
+ void SetJSContext(JSContext* aJSContext);
+ void ClearJSContext();
+
+ // Poll to see if JS sampling should be started/stopped.
+ void PollJSSampling();
+
+ public:
+ ThreadRegistrationLockedRWOnThread(const char* aName, const void* aStackTop)
+ : ThreadRegistrationLockedRWFromAnyThread(aName, aStackTop) {}
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistrationData_h
diff --git a/tools/profiler/public/ProfilerThreadRegistrationInfo.h b/tools/profiler/public/ProfilerThreadRegistrationInfo.h
new file mode 100644
index 0000000000..e116c3059e
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistrationInfo.h
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadRegistrationInfo_h
+#define ProfilerThreadRegistrationInfo_h
+
+#include "mozilla/BaseAndGeckoProfilerDetail.h"
+#include "mozilla/ProfilerUtils.h"
+#include "mozilla/TimeStamp.h"
+
+#include <string>
+
+namespace mozilla::profiler {
+
+// This class contains immutable information about a thread which needs to be
+// stored across restarts of the profiler and which can be useful even after the
+// thread has stopped running.
+class ThreadRegistrationInfo {
+ public:
+ // Construct on the thread.
+ explicit ThreadRegistrationInfo(const char* aName) : mName(aName) {}
+
+ // Construct for a foreign thread (e.g., Java).
+ ThreadRegistrationInfo(const char* aName, ProfilerThreadId aThreadId,
+ bool aIsMainThread, const TimeStamp& aRegisterTime)
+ : mName(aName),
+ mRegisterTime(aRegisterTime),
+ mThreadId(aThreadId),
+ mIsMainThread(aIsMainThread) {}
+
+ // Only allow move construction, for extraction when the thread ends.
+ ThreadRegistrationInfo(ThreadRegistrationInfo&&) = default;
+
+ // Other copies/moves disallowed.
+ ThreadRegistrationInfo(const ThreadRegistrationInfo&) = delete;
+ ThreadRegistrationInfo& operator=(const ThreadRegistrationInfo&) = delete;
+ ThreadRegistrationInfo& operator=(ThreadRegistrationInfo&&) = delete;
+
+ [[nodiscard]] const char* Name() const { return mName.c_str(); }
+ [[nodiscard]] const TimeStamp& RegisterTime() const { return mRegisterTime; }
+ [[nodiscard]] ProfilerThreadId ThreadId() const { return mThreadId; }
+ [[nodiscard]] bool IsMainThread() const { return mIsMainThread; }
+
+ private:
+ static TimeStamp ExistingRegisterTimeOrNow() {
+ TimeStamp registerTime = baseprofiler::detail::GetThreadRegistrationTime();
+ if (!registerTime) {
+ registerTime = TimeStamp::Now();
+ }
+ return registerTime;
+ }
+
+ const std::string mName;
+ const TimeStamp mRegisterTime = ExistingRegisterTimeOrNow();
+ const ProfilerThreadId mThreadId = profiler_current_thread_id();
+ const bool mIsMainThread = profiler_is_main_thread();
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistrationInfo_h
diff --git a/tools/profiler/public/ProfilerThreadRegistry.h b/tools/profiler/public/ProfilerThreadRegistry.h
new file mode 100644
index 0000000000..4d0fd3ef68
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistry.h
@@ -0,0 +1,321 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadRegistry_h
+#define ProfilerThreadRegistry_h
+
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/ProfilerThreadRegistration.h"
+#include "mozilla/Vector.h"
+
+namespace mozilla::profiler {
+
+class ThreadRegistry {
+ private:
+ using RegistryMutex = baseprofiler::detail::BaseProfilerSharedMutex;
+ using RegistryLockExclusive =
+ baseprofiler::detail::BaseProfilerAutoLockExclusive;
+ using RegistryLockShared = baseprofiler::detail::BaseProfilerAutoLockShared;
+
+ public:
+ // Aliases to data accessors (removing the ThreadRegistration prefix).
+
+ using UnlockedConstReader = ThreadRegistrationUnlockedConstReader;
+ using UnlockedConstReaderAndAtomicRW =
+ ThreadRegistrationUnlockedConstReaderAndAtomicRW;
+ using UnlockedRWForLockedProfiler =
+ ThreadRegistrationUnlockedRWForLockedProfiler;
+ using UnlockedReaderAndAtomicRWOnThread =
+ ThreadRegistrationUnlockedReaderAndAtomicRWOnThread;
+ using LockedRWFromAnyThread = ThreadRegistrationLockedRWFromAnyThread;
+ using LockedRWOnThread = ThreadRegistrationLockedRWOnThread;
+
+ // Off-thread access through the registry, providing the following data
+ // accessors: UnlockedConstReader, UnlockedConstReaderAndAtomicRW,
+ // UnlockedRWForLockedProfiler, and LockedRWFromAnyThread.
+ // (See ThreadRegistration class for ON-thread access.)
+
+ // Reference-like class pointing at a ThreadRegistration.
+ // It should only exist while sRegistryMutex is locked.
+ class OffThreadRef {
+ public:
+ // const UnlockedConstReader
+
+ [[nodiscard]] const UnlockedConstReader& UnlockedConstReaderCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReader(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderCRef());
+ }
+
+ // const UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] const UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWCRef());
+ }
+
+ // UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWRef());
+ }
+
+ // const UnlockedRWForLockedProfiler
+
+ [[nodiscard]] const UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerCRef());
+ }
+
+ // UnlockedRWForLockedProfiler
+
+ [[nodiscard]] UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerRef());
+ }
+
+ // const LockedRWFromAnyThread through ConstRWFromAnyThreadWithLock
+
+ class ConstRWFromAnyThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWFromAnyThread& DataCRef() const {
+ return mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] const LockedRWFromAnyThread* operator->() const {
+ return &mLockedRWFromAnyThread;
+ }
+
+ ConstRWFromAnyThreadWithLock(
+ const LockedRWFromAnyThread& aLockedRWFromAnyThread,
+ ThreadRegistration::DataMutex& aDataMutex)
+ : mLockedRWFromAnyThread(aLockedRWFromAnyThread),
+ mDataLock(aDataMutex) {}
+
+ private:
+ const LockedRWFromAnyThread& mLockedRWFromAnyThread;
+ ThreadRegistration::DataLock mDataLock;
+ };
+
+ [[nodiscard]] ConstRWFromAnyThreadWithLock ConstLockedRWFromAnyThread()
+ const {
+ return ConstRWFromAnyThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithConstLockedRWFromAnyThread(F&& aF) const {
+ ConstRWFromAnyThreadWithLock lockedData = ConstLockedRWFromAnyThread();
+ return std::forward<F>(aF)(lockedData.DataCRef());
+ }
+
+ // LockedRWFromAnyThread through RWFromAnyThreadWithLock
+
+ class RWFromAnyThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWFromAnyThread& DataCRef() const {
+ return mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] LockedRWFromAnyThread& DataRef() {
+ return mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] const LockedRWFromAnyThread* operator->() const {
+ return &mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] LockedRWFromAnyThread* operator->() {
+ return &mLockedRWFromAnyThread;
+ }
+
+ // In some situations, it may be useful to do some on-thread operations if
+ // we are indeed on this thread now. The lock is still held here; caller
+ // should not use this pointer longer than this RWFromAnyThreadWithLock.
+ [[nodiscard]] LockedRWOnThread* GetLockedRWOnThread() {
+ if (mLockedRWFromAnyThread.Info().ThreadId() ==
+ profiler_current_thread_id()) {
+ // mLockedRWFromAnyThread references a subclass of the
+ // ThreadRegistration's mData, so it's safe to downcast it to another
+ // hierarchy level of the object.
+ return &static_cast<LockedRWOnThread&>(mLockedRWFromAnyThread);
+ }
+ return nullptr;
+ }
+
+ private:
+ friend class OffThreadRef;
+ RWFromAnyThreadWithLock(LockedRWFromAnyThread& aLockedRWFromAnyThread,
+ ThreadRegistration::DataMutex& aDataMutex)
+ : mLockedRWFromAnyThread(aLockedRWFromAnyThread),
+ mDataLock(aDataMutex) {}
+
+ LockedRWFromAnyThread& mLockedRWFromAnyThread;
+ ThreadRegistration::DataLock mDataLock;
+ };
+
+ [[nodiscard]] RWFromAnyThreadWithLock GetLockedRWFromAnyThread() {
+ return RWFromAnyThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithLockedRWFromAnyThread(F&& aF) {
+ RWFromAnyThreadWithLock lockedData = GetLockedRWFromAnyThread();
+ return std::forward<F>(aF)(lockedData.DataRef());
+ }
+
+ private:
+ // Only ThreadRegistry should construct an OnThreadRef.
+ friend class ThreadRegistry;
+ explicit OffThreadRef(ThreadRegistration& aThreadRegistration)
+ : mThreadRegistration(&aThreadRegistration) {}
+
+ // If we have an ON-thread ref, it's safe to convert to an OFF-thread ref.
+ explicit OffThreadRef(ThreadRegistration::OnThreadRef aOnThreadRef)
+ : mThreadRegistration(aOnThreadRef.mThreadRegistration) {}
+
+ [[nodiscard]] bool IsPointingAt(
+ ThreadRegistration& aThreadRegistration) const {
+ return mThreadRegistration == &aThreadRegistration;
+ }
+
+ // Guaranted to be non-null by construction.
+ ThreadRegistration* mThreadRegistration;
+ };
+
+ // Lock the registry non-exclusively and allow iteration. E.g.:
+ // `for (OffThreadRef thread : LockedRegistry{}) { ... }`
+ // Do *not* export copies/references, as they could become dangling.
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ class LockedRegistry {
+ public:
+ LockedRegistry()
+ : mRegistryLock([]() -> RegistryMutex& {
+ MOZ_ASSERT(!IsRegistryMutexLockedOnCurrentThread(),
+ "Recursive locking detected");
+ // In DEBUG builds, *before* we attempt to lock sRegistryMutex, we
+ // want to check that the ThreadRegistration mutex is *not* locked
+ // on this thread, to avoid inversion deadlocks.
+ MOZ_ASSERT(!ThreadRegistration::IsDataMutexLockedOnCurrentThread());
+ return sRegistryMutex;
+ }()) {
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.mThreadRegistration
+ ->mIsRegistryLockedSharedOnThisThread = true;
+ });
+ }
+
+ ~LockedRegistry() {
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.mThreadRegistration
+ ->mIsRegistryLockedSharedOnThisThread = false;
+ });
+ }
+
+ [[nodiscard]] const OffThreadRef* begin() const {
+ return sRegistryContainer.begin();
+ }
+ [[nodiscard]] OffThreadRef* begin() { return sRegistryContainer.begin(); }
+ [[nodiscard]] const OffThreadRef* end() const {
+ return sRegistryContainer.end();
+ }
+ [[nodiscard]] OffThreadRef* end() { return sRegistryContainer.end(); }
+
+ private:
+ RegistryLockShared mRegistryLock;
+ };
+
+ // Call `F(OffThreadRef)` for the given aThreadId.
+ template <typename F>
+ static void WithOffThreadRef(ProfilerThreadId aThreadId, F&& aF) {
+ for (OffThreadRef thread : LockedRegistry{}) {
+ if (thread.UnlockedConstReaderCRef().Info().ThreadId() == aThreadId) {
+ std::forward<F>(aF)(thread);
+ break;
+ }
+ }
+ }
+
+ template <typename F, typename FallbackReturn>
+ [[nodiscard]] static auto WithOffThreadRefOr(ProfilerThreadId aThreadId,
+ F&& aF,
+ FallbackReturn&& aFallbackReturn)
+ -> decltype(std::forward<F>(aF)(std::declval<OffThreadRef>())) {
+ for (OffThreadRef thread : LockedRegistry{}) {
+ if (thread.UnlockedConstReaderCRef().Info().ThreadId() == aThreadId) {
+ return std::forward<F>(aF)(thread);
+ }
+ }
+ return std::forward<FallbackReturn>(aFallbackReturn);
+ }
+
+ static size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) {
+ LockedRegistry lockedRegistry;
+ // "Ex" because we don't count static objects, but we count whatever they
+ // allocated on the heap.
+ size_t bytes = sRegistryContainer.sizeOfExcludingThis(aMallocSizeOf);
+ for (const OffThreadRef& offThreadRef : lockedRegistry) {
+ bytes +=
+ offThreadRef.mThreadRegistration->SizeOfExcludingThis(aMallocSizeOf);
+ }
+ return bytes;
+ }
+
+ static size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) {
+ return SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ [[nodiscard]] static bool IsRegistryMutexLockedOnCurrentThread() {
+ return sRegistryMutex.IsLockedExclusiveOnCurrentThread() ||
+ ThreadRegistration::WithOnThreadRefOr(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ return aOnThreadRef.mThreadRegistration
+ ->mIsRegistryLockedSharedOnThisThread;
+ },
+ false);
+ }
+
+ private:
+ using RegistryContainer = Vector<OffThreadRef>;
+
+ static RegistryContainer sRegistryContainer;
+
+ // Mutex protecting the registry.
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ static RegistryMutex sRegistryMutex;
+
+ // Only allow ThreadRegistration to (un)register itself.
+ friend class ThreadRegistration;
+ static void Register(ThreadRegistration::OnThreadRef aOnThreadRef);
+ static void Unregister(ThreadRegistration::OnThreadRef aOnThreadRef);
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistry_h
diff --git a/tools/profiler/public/ProfilerThreadSleep.h b/tools/profiler/public/ProfilerThreadSleep.h
new file mode 100644
index 0000000000..730176d39f
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadSleep.h
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// APIs that inform the profiler when a thread is effectively asleep so that we
+// can avoid sampling it more than once.
+
+#ifndef ProfilerThreadSleep_h
+#define ProfilerThreadSleep_h
+
+#ifndef MOZ_GECKO_PROFILER
+
+// This file can be #included unconditionally. However, everything within this
+// file must be guarded by a #ifdef MOZ_GECKO_PROFILER, *except* for the
+// following macros and functions, which encapsulate the most common operations
+// and thus avoid the need for many #ifdefs.
+
+# define AUTO_PROFILER_THREAD_SLEEP
+
+static inline void profiler_thread_sleep() {}
+
+static inline void profiler_thread_wake() {}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "mozilla/Attributes.h"
+# include "mozilla/BaseProfilerRAIIMacro.h"
+
+// These functions tell the profiler that a thread went to sleep so that we can
+// avoid sampling it more than once while it's sleeping. Calling
+// profiler_thread_sleep() twice without an intervening profiler_thread_wake()
+// is an error. All three functions operate the same whether the profiler is
+// active or inactive.
+void profiler_thread_sleep();
+void profiler_thread_wake();
+
+// Mark a thread as asleep within a scope.
+// (See also AUTO_PROFILER_THREAD_WAKE in ProfilerThreadState.h)
+# define AUTO_PROFILER_THREAD_SLEEP \
+ mozilla::AutoProfilerThreadSleep PROFILER_RAII
+
+namespace mozilla {
+
+// (See also AutoProfilerThreadWake in ProfilerThreadState.h)
+class MOZ_RAII AutoProfilerThreadSleep {
+ public:
+ explicit AutoProfilerThreadSleep() { profiler_thread_sleep(); }
+
+ ~AutoProfilerThreadSleep() { profiler_thread_wake(); }
+};
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerThreadSleep_h
diff --git a/tools/profiler/public/ProfilerThreadState.h b/tools/profiler/public/ProfilerThreadState.h
new file mode 100644
index 0000000000..6ac48e41dd
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadState.h
@@ -0,0 +1,128 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains functions that give information about the Profiler state
+// with regards to the current thread.
+
+#ifndef ProfilerThreadState_h
+#define ProfilerThreadState_h
+
+#include "mozilla/ProfilerState.h"
+#include "mozilla/ProfilerThreadRegistration.h"
+#include "mozilla/ProfilerThreadRegistry.h"
+#include "mozilla/ProfilerThreadSleep.h"
+
+// During profiling, if the current thread is registered, return true
+// (regardless of whether it is actively being profiled).
+// (Same caveats and recommended usage as profiler_is_active().)
+[[nodiscard]] inline bool profiler_is_active_and_thread_is_registered() {
+ return profiler_is_active() &&
+ mozilla::profiler::ThreadRegistration::IsRegistered();
+}
+
+// Is the profiler active and unpaused, and is the current thread being
+// profiled for any of the given features? (Same caveats and recommended usage
+// as profiler_is_active().)
+[[nodiscard]] inline bool profiler_thread_is_being_profiled(
+ ThreadProfilingFeatures aThreadProfilingFeatures) {
+ return profiler_is_active_and_unpaused() &&
+ mozilla::profiler::ThreadRegistration::WithOnThreadRefOr(
+ [aThreadProfilingFeatures](
+ mozilla::profiler::ThreadRegistration::OnThreadRef aTR) {
+ return DoFeaturesIntersect(
+ aTR.UnlockedConstReaderAndAtomicRWCRef().ProfilingFeatures(),
+ aThreadProfilingFeatures);
+ },
+ false);
+}
+
+// Is the profiler active and unpaused, and is the given thread being profiled?
+// (Same caveats and recommended usage as profiler_is_active().)
+// Safe to use with the current thread id, or unspecified ProfilerThreadId (same
+// as current thread id).
+[[nodiscard]] inline bool profiler_thread_is_being_profiled(
+ const ProfilerThreadId& aThreadId,
+ ThreadProfilingFeatures aThreadProfilingFeatures) {
+ if (!profiler_is_active_and_unpaused()) {
+ return false;
+ }
+
+ if (!aThreadId.IsSpecified() || aThreadId == profiler_current_thread_id()) {
+ // For the current thread id, use the ThreadRegistration directly, it is
+ // more efficient.
+ return mozilla::profiler::ThreadRegistration::WithOnThreadRefOr(
+ [aThreadProfilingFeatures](
+ mozilla::profiler::ThreadRegistration::OnThreadRef aTR) {
+ return DoFeaturesIntersect(
+ aTR.UnlockedConstReaderAndAtomicRWCRef().ProfilingFeatures(),
+ aThreadProfilingFeatures);
+ },
+ false);
+ }
+
+ // For other threads, go through the ThreadRegistry.
+ return mozilla::profiler::ThreadRegistry::WithOffThreadRefOr(
+ aThreadId,
+ [aThreadProfilingFeatures](
+ mozilla::profiler::ThreadRegistry::OffThreadRef aTR) {
+ return DoFeaturesIntersect(
+ aTR.UnlockedConstReaderAndAtomicRWCRef().ProfilingFeatures(),
+ aThreadProfilingFeatures);
+ },
+ false);
+}
+
+// Is the current thread registered and sleeping?
+[[nodiscard]] inline bool profiler_thread_is_sleeping() {
+ return profiler_is_active() &&
+ mozilla::profiler::ThreadRegistration::WithOnThreadRefOr(
+ [](mozilla::profiler::ThreadRegistration::OnThreadRef aTR) {
+ return aTR.UnlockedConstReaderAndAtomicRWCRef().IsSleeping();
+ },
+ false);
+}
+
+#ifndef MOZ_GECKO_PROFILER
+
+# define AUTO_PROFILER_THREAD_WAKE
+
+#else // !MOZ_GECKO_PROFILER
+
+// Mark a thread as awake within a scope.
+// (See also AUTO_PROFILER_THREAD_SLEEP in mozilla/ProfilerThreadSleep.h)
+# define AUTO_PROFILER_THREAD_WAKE \
+ mozilla::AutoProfilerThreadWake PROFILER_RAII
+
+namespace mozilla {
+
+// Temporarily wake up the profiling of a thread while servicing events such as
+// Asynchronous Procedure Calls (APCs).
+// (See also AutoProfilerThreadSleep in ProfilerThreadSleep.h)
+class MOZ_RAII AutoProfilerThreadWake {
+ public:
+ explicit AutoProfilerThreadWake()
+ : mIssuedWake(profiler_thread_is_sleeping()) {
+ if (mIssuedWake) {
+ profiler_thread_wake();
+ }
+ }
+
+ ~AutoProfilerThreadWake() {
+ if (mIssuedWake) {
+ MOZ_ASSERT(!profiler_thread_is_sleeping());
+ profiler_thread_sleep();
+ }
+ }
+
+ private:
+ bool mIssuedWake;
+};
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerThreadState_h
diff --git a/tools/profiler/public/ProfilerUtils.h b/tools/profiler/public/ProfilerUtils.h
new file mode 100644
index 0000000000..3969761e18
--- /dev/null
+++ b/tools/profiler/public/ProfilerUtils.h
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerUtils_h
+#define ProfilerUtils_h
+
+// This header contains most process- and thread-related functions.
+// It is safe to include unconditionally.
+
+#include "mozilla/BaseProfilerUtils.h"
+
+using ProfilerProcessId = mozilla::baseprofiler::BaseProfilerProcessId;
+using ProfilerThreadId = mozilla::baseprofiler::BaseProfilerThreadId;
+
+// Get the current process's ID.
+[[nodiscard]] ProfilerProcessId profiler_current_process_id();
+
+// Get the current thread's ID.
+[[nodiscard]] ProfilerThreadId profiler_current_thread_id();
+
+// Must be called at least once from the main thread, before any other main-
+// thread id function.
+void profiler_init_main_thread_id();
+
+[[nodiscard]] ProfilerThreadId profiler_main_thread_id();
+
+[[nodiscard]] bool profiler_is_main_thread();
+
+#endif // ProfilerUtils_h
diff --git a/tools/profiler/public/shared-libraries.h b/tools/profiler/public/shared-libraries.h
new file mode 100644
index 0000000000..dfd3599e71
--- /dev/null
+++ b/tools/profiler/public/shared-libraries.h
@@ -0,0 +1,213 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_LIBRARIES_H_
+#define SHARED_LIBRARIES_H_
+
+#ifndef MOZ_GECKO_PROFILER
+# error This header does not have a useful implementation on your platform!
+#endif
+
+#include "nsNativeCharsetUtils.h"
+#include "nsString.h"
+#include <nsID.h>
+
+#include <algorithm>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string>
+#include <vector>
+
+namespace IPC {
+class MessageReader;
+class MessageWriter;
+template <typename T>
+struct ParamTraits;
+} // namespace IPC
+
+class SharedLibrary {
+ public:
+ SharedLibrary(uintptr_t aStart, uintptr_t aEnd, uintptr_t aOffset,
+ const nsCString& aBreakpadId, const nsCString& aCodeId,
+ const nsString& aModuleName, const nsString& aModulePath,
+ const nsString& aDebugName, const nsString& aDebugPath,
+ const nsCString& aVersion, const char* aArch)
+ : mStart(aStart),
+ mEnd(aEnd),
+ mOffset(aOffset),
+ mBreakpadId(aBreakpadId),
+ mCodeId(aCodeId),
+ mModuleName(aModuleName),
+ mModulePath(aModulePath),
+ mDebugName(aDebugName),
+ mDebugPath(aDebugPath),
+ mVersion(aVersion),
+ mArch(aArch) {}
+
+ bool operator==(const SharedLibrary& other) const {
+ return (mStart == other.mStart) && (mEnd == other.mEnd) &&
+ (mOffset == other.mOffset) && (mModuleName == other.mModuleName) &&
+ (mModulePath == other.mModulePath) &&
+ (mDebugName == other.mDebugName) &&
+ (mDebugPath == other.mDebugPath) &&
+ (mBreakpadId == other.mBreakpadId) && (mCodeId == other.mCodeId) &&
+ (mVersion == other.mVersion) && (mArch == other.mArch);
+ }
+
+ uintptr_t GetStart() const { return mStart; }
+ uintptr_t GetEnd() const { return mEnd; }
+ uintptr_t GetOffset() const { return mOffset; }
+ const nsCString& GetBreakpadId() const { return mBreakpadId; }
+ const nsCString& GetCodeId() const { return mCodeId; }
+ const nsString& GetModuleName() const { return mModuleName; }
+ const nsString& GetModulePath() const { return mModulePath; }
+ const std::string GetNativeDebugPath() const {
+ nsAutoCString debugPathStr;
+
+ NS_CopyUnicodeToNative(mDebugPath, debugPathStr);
+
+ return debugPathStr.get();
+ }
+ const nsString& GetDebugName() const { return mDebugName; }
+ const nsString& GetDebugPath() const { return mDebugPath; }
+ const nsCString& GetVersion() const { return mVersion; }
+ const std::string& GetArch() const { return mArch; }
+ size_t SizeOf() const {
+ return sizeof *this + mBreakpadId.Length() + mCodeId.Length() +
+ mModuleName.Length() * 2 + mModulePath.Length() * 2 +
+ mDebugName.Length() * 2 + mDebugPath.Length() * 2 +
+ mVersion.Length() + mArch.size();
+ }
+
+ SharedLibrary() : mStart{0}, mEnd{0}, mOffset{0} {}
+
+ private:
+ uintptr_t mStart;
+ uintptr_t mEnd;
+ uintptr_t mOffset;
+ nsCString mBreakpadId;
+ // A string carrying an identifier for a binary.
+ //
+ // All platforms have different formats:
+ // - Windows: The code ID for a Windows PE file.
+ // It's the PE timestamp and PE image size.
+ // - macOS: The code ID for a macOS / iOS binary (mach-O).
+ // It's the mach-O UUID without dashes and without the trailing 0 for the
+ // breakpad ID.
+ // - Linux/Android: The code ID for a Linux ELF file.
+ // It's the complete build ID, as hex string.
+ nsCString mCodeId;
+ nsString mModuleName;
+ nsString mModulePath;
+ nsString mDebugName;
+ nsString mDebugPath;
+ nsCString mVersion;
+ std::string mArch;
+
+ friend struct IPC::ParamTraits<SharedLibrary>;
+};
+
+static bool CompareAddresses(const SharedLibrary& first,
+ const SharedLibrary& second) {
+ return first.GetStart() < second.GetStart();
+}
+
+class SharedLibraryInfo {
+ public:
+ static SharedLibraryInfo GetInfoForSelf();
+#ifdef XP_WIN
+ static SharedLibraryInfo GetInfoFromPath(const wchar_t* aPath);
+#endif
+
+ static void Initialize();
+
+ void AddSharedLibrary(SharedLibrary entry) { mEntries.push_back(entry); }
+
+ void AddAllSharedLibraries(const SharedLibraryInfo& sharedLibraryInfo) {
+ mEntries.insert(mEntries.end(), sharedLibraryInfo.mEntries.begin(),
+ sharedLibraryInfo.mEntries.end());
+ }
+
+ const SharedLibrary& GetEntry(size_t i) const { return mEntries[i]; }
+
+ SharedLibrary& GetMutableEntry(size_t i) { return mEntries[i]; }
+
+ // Removes items in the range [first, last)
+ // i.e. element at the "last" index is not removed
+ void RemoveEntries(size_t first, size_t last) {
+ mEntries.erase(mEntries.begin() + first, mEntries.begin() + last);
+ }
+
+ bool Contains(const SharedLibrary& searchItem) const {
+ return (mEntries.end() !=
+ std::find(mEntries.begin(), mEntries.end(), searchItem));
+ }
+
+ size_t GetSize() const { return mEntries.size(); }
+
+ void SortByAddress() {
+ std::sort(mEntries.begin(), mEntries.end(), CompareAddresses);
+ }
+
+ // Remove duplicate entries from the vector.
+ //
+ // We purposefully don't use the operator== implementation of SharedLibrary
+ // because it compares all the fields including mStart, mEnd and mOffset which
+ // are not the same across different processes.
+ void DeduplicateEntries() {
+ static auto cmpSort = [](const SharedLibrary& a, const SharedLibrary& b) {
+ return std::tie(a.GetModuleName(), a.GetBreakpadId()) <
+ std::tie(b.GetModuleName(), b.GetBreakpadId());
+ };
+ static auto cmpEqual = [](const SharedLibrary& a, const SharedLibrary& b) {
+ return std::tie(a.GetModuleName(), a.GetBreakpadId()) ==
+ std::tie(b.GetModuleName(), b.GetBreakpadId());
+ };
+ // std::unique requires the vector to be sorted first. It can only remove
+ // consecutive duplicate elements.
+ std::sort(mEntries.begin(), mEntries.end(), cmpSort);
+ // Remove the duplicates since it's sorted now.
+ mEntries.erase(std::unique(mEntries.begin(), mEntries.end(), cmpEqual),
+ mEntries.end());
+ }
+
+ void Clear() { mEntries.clear(); }
+
+ size_t SizeOf() const {
+ size_t size = 0;
+
+ for (const auto& item : mEntries) {
+ size += item.SizeOf();
+ }
+
+ return size;
+ }
+
+ private:
+ std::vector<SharedLibrary> mEntries;
+
+ friend struct IPC::ParamTraits<SharedLibraryInfo>;
+};
+
+namespace IPC {
+template <>
+struct ParamTraits<SharedLibrary> {
+ typedef SharedLibrary paramType;
+
+ static void Write(MessageWriter* aWriter, const paramType& aParam);
+ static bool Read(MessageReader* aReader, paramType* aResult);
+};
+
+template <>
+struct ParamTraits<SharedLibraryInfo> {
+ typedef SharedLibraryInfo paramType;
+
+ static void Write(MessageWriter* aWriter, const paramType& aParam);
+ static bool Read(MessageReader* aReader, paramType* aResult);
+};
+} // namespace IPC
+
+#endif