68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_PROFILER_SCOPED_PROFILE_H_
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#define BASE_PROFILER_SCOPED_PROFILE_H_
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//------------------------------------------------------------------------------
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// ScopedProfile provides basic helper functions for profiling a short
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// region of code within a scope. It is separate from the related ThreadData
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// class so that it can be included without much other cruft, and provide the
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// macros listed below.
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#include "base/base_export.h"
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#include "base/location.h"
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#include "base/profiler/tracked_time.h"
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#if defined(GOOGLE_CHROME_BUILD)
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// We don't ship these profiled regions. This is for developer builds only.
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// It allows developers to do some profiling of their code, and see results on
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// their about:profiler page.
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#define TRACK_RUN_IN_THIS_SCOPED_REGION_FOR_DEVELOPER_BUILDS(scope_name) \
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((void)0)
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#else
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#define TRACK_RUN_IN_THIS_SCOPED_REGION_FOR_DEVELOPER_BUILDS(scope_name) \
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::tracked_objects::ScopedProfile LINE_BASED_VARIABLE_NAME_FOR_PROFILING( \
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FROM_HERE_WITH_EXPLICIT_FUNCTION(#scope_name))
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#endif
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#define PASTE_LINE_NUMBER_ON_NAME(name, line) name##line
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#define LINE_BASED_VARIABLE_NAME_FOR_PROFILING \
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PASTE_LINE_NUMBER_ON_NAME(some_profiler_variable_, __LINE__)
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#define TRACK_RUN_IN_IPC_HANDLER(dispatch_function_name) \
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::tracked_objects::ScopedProfile some_tracking_variable_name( \
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FROM_HERE_WITH_EXPLICIT_FUNCTION(#dispatch_function_name))
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namespace tracked_objects {
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class Births;
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class BASE_EXPORT ScopedProfile {
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public:
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explicit ScopedProfile(const Location& location);
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~ScopedProfile();
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// Stop tracing prior to the end destruction of the instance.
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void StopClockAndTally();
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private:
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Births* birth_; // Place in code where tracking started.
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const TrackedTime start_of_run_;
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DISALLOW_COPY_AND_ASSIGN(ScopedProfile);
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};
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} // namespace tracked_objects
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#endif // BASE_PROFILER_SCOPED_PROFILE_H_
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