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/tracked_time.h" 6 7 #include "build/build_config.h" 8 9 #if defined(OS_WIN) 10 #include <mmsystem.h> // Declare timeGetTime()... after including build_config. 11 #endif 12 13 namespace tracked_objects { 14 15 Duration::Duration() : ms_(0) {} 16 Duration::Duration(int32 duration) : ms_(duration) {} 17 18 Duration& Duration::operator+=(const Duration& other) { 19 ms_ += other.ms_; 20 return *this; 21 } 22 23 Duration Duration::operator+(const Duration& other) const { 24 return Duration(ms_ + other.ms_); 25 } 26 27 bool Duration::operator==(const Duration& other) const { 28 return ms_ == other.ms_; 29 } 30 31 bool Duration::operator!=(const Duration& other) const { 32 return ms_ != other.ms_; 33 } 34 35 bool Duration::operator>(const Duration& other) const { 36 return ms_ > other.ms_; 37 } 38 39 // static 40 Duration Duration::FromMilliseconds(int ms) { return Duration(ms); } 41 42 int32 Duration::InMilliseconds() const { return ms_; } 43 44 //------------------------------------------------------------------------------ 45 46 TrackedTime::TrackedTime() : ms_(0) {} 47 TrackedTime::TrackedTime(int32 ms) : ms_(ms) {} 48 TrackedTime::TrackedTime(const base::TimeTicks& time) 49 : ms_((time - base::TimeTicks()).InMilliseconds()) { 50 } 51 52 // static 53 TrackedTime TrackedTime::Now() { 54 #if defined(OS_WIN) 55 // Use lock-free accessor to 32 bit time. 56 // Note that TimeTicks::Now() is built on this, so we have "compatible" 57 // times when we down-convert a TimeTicks sample. 58 return TrackedTime(base::TimeTicks::UnprotectedNow()); 59 #else 60 // Posix has nice cheap 64 bit times, so we just down-convert it. 61 return TrackedTime(base::TimeTicks::Now()); 62 #endif // OS_WIN 63 } 64 65 Duration TrackedTime::operator-(const TrackedTime& other) const { 66 return Duration(ms_ - other.ms_); 67 } 68 69 TrackedTime TrackedTime::operator+(const Duration& other) const { 70 return TrackedTime(ms_ + other.ms_); 71 } 72 73 bool TrackedTime::is_null() const { return ms_ == 0; } 74 75 } // namespace tracked_objects 76
