77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
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// Copyright (c) 2012 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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#include "base/profiler/tracked_time.h"
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#include "build/build_config.h"
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#if defined(OS_WIN)
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#include <mmsystem.h> // Declare timeGetTime()... after including build_config.
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#endif
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namespace tracked_objects {
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Duration::Duration() : ms_(0) {}
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Duration::Duration(int32 duration) : ms_(duration) {}
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Duration& Duration::operator+=(const Duration& other) {
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ms_ += other.ms_;
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return *this;
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}
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Duration Duration::operator+(const Duration& other) const {
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return Duration(ms_ + other.ms_);
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}
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bool Duration::operator==(const Duration& other) const {
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return ms_ == other.ms_;
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}
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bool Duration::operator!=(const Duration& other) const {
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return ms_ != other.ms_;
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}
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bool Duration::operator>(const Duration& other) const {
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return ms_ > other.ms_;
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}
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// static
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Duration Duration::FromMilliseconds(int ms) { return Duration(ms); }
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int32 Duration::InMilliseconds() const { return ms_; }
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//------------------------------------------------------------------------------
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TrackedTime::TrackedTime() : ms_(0) {}
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TrackedTime::TrackedTime(int32 ms) : ms_(ms) {}
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TrackedTime::TrackedTime(const base::TimeTicks& time)
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: ms_((time - base::TimeTicks()).InMilliseconds()) {
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}
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// static
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TrackedTime TrackedTime::Now() {
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#if defined(OS_WIN)
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// Use lock-free accessor to 32 bit time.
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// Note that TimeTicks::Now() is built on this, so we have "compatible"
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// times when we down-convert a TimeTicks sample.
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// TODO(jar): Surface this interface via something in base/time/time.h.
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return TrackedTime(static_cast<int32>(timeGetTime()));
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#else
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// Posix has nice cheap 64 bit times, so we just down-convert it.
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return TrackedTime(base::TimeTicks::Now());
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#endif // OS_WIN
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}
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Duration TrackedTime::operator-(const TrackedTime& other) const {
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return Duration(ms_ - other.ms_);
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}
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TrackedTime TrackedTime::operator+(const Duration& other) const {
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return TrackedTime(ms_ + other.ms_);
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}
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bool TrackedTime::is_null() const { return ms_ == 0; }
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} // namespace tracked_objects
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