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/* -*- 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
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