jar@chromium.org | 3d6a82f | 2011-11-05 09:39:27 +0900 | [diff] [blame^] | 1 | // Copyright (c) 2011 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 | #if defined(USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS) |
| 16 | |
| 17 | Duration::Duration() : ms_(0) {} |
| 18 | Duration::Duration(int32 duration) : ms_(duration) {} |
| 19 | |
| 20 | Duration& Duration::operator+=(const Duration& other) { |
| 21 | ms_ += other.ms_; |
| 22 | return *this; |
| 23 | } |
| 24 | |
| 25 | Duration Duration::operator+(const Duration& other) const { |
| 26 | return Duration(ms_ + other.ms_); |
| 27 | } |
| 28 | |
| 29 | bool Duration::operator==(const Duration& other) const { |
| 30 | return ms_ == other.ms_; |
| 31 | } |
| 32 | |
| 33 | bool Duration::operator!=(const Duration& other) const { |
| 34 | return ms_ != other.ms_; |
| 35 | } |
| 36 | |
| 37 | bool Duration::operator>(const Duration& other) const { |
| 38 | return ms_ > other.ms_; |
| 39 | } |
| 40 | |
| 41 | // static |
| 42 | Duration Duration::FromMilliseconds(int ms) { return Duration(ms); } |
| 43 | |
| 44 | int32 Duration::InMilliseconds() const { return ms_; } |
| 45 | |
| 46 | //------------------------------------------------------------------------------ |
| 47 | |
| 48 | TrackedTime::TrackedTime() : ms_(0) {} |
| 49 | TrackedTime::TrackedTime(int32 ms) : ms_(ms) {} |
| 50 | TrackedTime::TrackedTime(const base::TimeTicks& time) |
| 51 | : ms_((time - base::TimeTicks()).InMilliseconds()) { |
| 52 | } |
| 53 | |
| 54 | // static |
| 55 | TrackedTime TrackedTime::Now() { |
| 56 | #if defined(OS_WIN) |
| 57 | // Use lock-free accessor to 32 bit time. |
| 58 | // Note that TimeTicks::Now() is built on this, so we have "compatible" |
| 59 | // times when we down-convert a TimeTicks sample. |
| 60 | // TODO(jar): Surface this interface via something in base/time.h. |
| 61 | return TrackedTime(static_cast<int32>(timeGetTime())); |
| 62 | #else |
| 63 | // Posix has nice cheap 64 bit times, so we just down-convert it. |
| 64 | return TrackedTime(base::TimeTicks::Now()); |
| 65 | #endif // OS_WIN |
| 66 | } |
| 67 | |
| 68 | Duration TrackedTime::operator-(const TrackedTime& other) const { |
| 69 | return Duration(ms_ - other.ms_); |
| 70 | } |
| 71 | |
| 72 | TrackedTime TrackedTime::operator+(const Duration& other) const { |
| 73 | return TrackedTime(ms_ + other.ms_); |
| 74 | } |
| 75 | |
| 76 | bool TrackedTime::is_null() const { return ms_ == 0; } |
| 77 | |
| 78 | #endif // USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS |
| 79 | |
| 80 | } // namespace tracked_objects |