1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "base/profiler/alternate_timer.h" 6 7#include "base/logging.h" 8 9namespace { 10 11tracked_objects::NowFunction* g_time_function = NULL; 12tracked_objects::TimeSourceType g_time_source_type = 13 tracked_objects::TIME_SOURCE_TYPE_WALL_TIME; 14 15} // anonymous namespace 16 17namespace tracked_objects { 18 19const char kAlternateProfilerTime[] = "CHROME_PROFILER_TIME"; 20 21// Set an alternate timer function to replace the OS time function when 22// profiling. 23void SetAlternateTimeSource(NowFunction* now_function, TimeSourceType type) { 24 DCHECK_EQ(reinterpret_cast<NowFunction*>(NULL), g_time_function); 25 g_time_function = now_function; 26 g_time_source_type = type; 27} 28 29NowFunction* GetAlternateTimeSource() { 30 return g_time_function; 31} 32 33TimeSourceType GetTimeSourceType() { 34 return g_time_source_type; 35} 36 37} // namespace tracked_objects 38