blob: fdc75dc6f011788e4822d5301b4e7a2e43ecf659 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is a glue file, which allows third party code to call into our profiler
// without having to include most any functions from base.
#include "base/base_export.h"
namespace tracked_objects {
enum TimeSourceType {
// Provide type for an alternate timer function.
typedef unsigned int NowFunction();
// Environment variable name that is used to activate alternate timer profiling
// (such as using TCMalloc allocations to provide a pseudo-timer) for tasks
// instead of wall clock profiling.
BASE_EXPORT extern const char kAlternateProfilerTime[];
// Set an alternate timer function to replace the OS time function when
// profiling. Typically this is called by an allocator that is providing a
// function that indicates how much memory has been allocated on any given
// thread.
BASE_EXPORT void SetAlternateTimeSource(NowFunction* now_function,
TimeSourceType type);
// Gets the pointer to a function that was set via SetAlternateTimeSource().
// Returns NULL if no set was done prior to calling GetAlternateTimeSource.
NowFunction* GetAlternateTimeSource();
// Returns the type of the currently set time source.
BASE_EXPORT TimeSourceType GetTimeSourceType();
} // namespace tracked_objects