58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// APIs that inform the profiler when a thread is effectively asleep so that we
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// can avoid sampling it more than once.
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#ifndef ProfilerThreadSleep_h
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#define ProfilerThreadSleep_h
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#ifndef MOZ_GECKO_PROFILER
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// This file can be #included unconditionally. However, everything within this
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// file must be guarded by a #ifdef MOZ_GECKO_PROFILER, *except* for the
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// following macros and functions, which encapsulate the most common operations
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// and thus avoid the need for many #ifdefs.
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# define AUTO_PROFILER_THREAD_SLEEP
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static inline void profiler_thread_sleep() {}
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static inline void profiler_thread_wake() {}
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#else // !MOZ_GECKO_PROFILER
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# include "mozilla/Attributes.h"
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# include "mozilla/BaseProfilerRAIIMacro.h"
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// These functions tell the profiler that a thread went to sleep so that we can
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// avoid sampling it more than once while it's sleeping. Calling
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// profiler_thread_sleep() twice without an intervening profiler_thread_wake()
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// is an error. All three functions operate the same whether the profiler is
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// active or inactive.
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void profiler_thread_sleep();
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void profiler_thread_wake();
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// Mark a thread as asleep within a scope.
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// (See also AUTO_PROFILER_THREAD_WAKE in ProfilerThreadState.h)
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# define AUTO_PROFILER_THREAD_SLEEP \
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mozilla::AutoProfilerThreadSleep PROFILER_RAII
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namespace mozilla {
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// (See also AutoProfilerThreadWake in ProfilerThreadState.h)
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class MOZ_RAII AutoProfilerThreadSleep {
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public:
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explicit AutoProfilerThreadSleep() { profiler_thread_sleep(); }
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~AutoProfilerThreadSleep() { profiler_thread_wake(); }
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};
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} // namespace mozilla
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#endif // !MOZ_GECKO_PROFILER
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#endif // ProfilerThreadSleep_h
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