зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
2.3 KiB
C++
67 строки
2.3 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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#ifndef mozilla_AutoProfilerLabel_h
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#define mozilla_AutoProfilerLabel_h
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#ifdef MOZ_GECKO_PROFILER
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#include "mozilla/Attributes.h"
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#include "mozilla/GuardObjects.h"
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#include "mozilla/Types.h"
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// The Gecko Profiler defines AutoProfilerLabel, an RAII class for
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// pushing/popping entries to/from the PseudoStack.
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//
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// This file defines a class of the same name that does much the same thing,
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// but which can be used in (and only in) mozglue. A different class is
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// necessary because mozglue cannot directly access sPseudoStack.
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//
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// Note that this class is slightly slower than the other AutoProfilerLabel,
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// and it lacks the macro wrappers. It also is effectively hardwired to use
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// js::ProfileEntry::Kind::CPP_NORMAL as the kind, and
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// js::ProfileEntry::Category::OTHER as the category, because that's what the
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// callbacks provided by the profiler use. (Specifying the kind or category in
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// this file would require #including ProfilingStack.h in mozglue, which we
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// don't want to do.)
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class PseudoStack;
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namespace mozilla {
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typedef PseudoStack* (*ProfilerLabelEnter)(const char*, const char*, void*,
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uint32_t);
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typedef void (*ProfilerLabelExit)(PseudoStack*);
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// Register callbacks that do the entry/exit work involving sPseudoStack.
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MFBT_API void RegisterProfilerLabelEnterExit(ProfilerLabelEnter aEnter,
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ProfilerLabelExit aExit);
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// This #ifdef prevents this AutoProfilerLabel from being defined in libxul,
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// which would conflict with the one in the profiler.
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#ifdef IMPL_MFBT
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class MOZ_RAII AutoProfilerLabel
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{
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public:
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AutoProfilerLabel(const char* aLabel, const char* aDynamicString,
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uint32_t aLine
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MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
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~AutoProfilerLabel();
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private:
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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PseudoStack* mPseudoStack;
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};
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#endif
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} // namespace mozilla
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#endif // MOZ_GECKO_PROFILER
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#endif // mozilla_AutoProfilerLabel_h
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