Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 190 insertions, 0 deletions

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