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aab625999f
Profiler labels can't currently be used in mozglue, because the profiler's code is in libxul, and mozglue cannot depend on libxul. This patch addresses this by basically duplicating AutoProfilerLabel in mozglue. libxul passes two callback functions to mozglue to do the actual pushing/popping of labels. It's an annoying amount of machinery, but it is unavoidable if we want to use profiler labels within mozglue. --HG-- extra : rebase_source : 4bcb6fb0f050bba42c23d92d01f9c56611f8518f
67 lines
2.3 KiB
C++
67 lines
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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