78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
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// Copyright (c) 2011 The Chromium OS 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 "timer.h"
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#include <string>
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#include <base/memory/scoped_ptr.h>
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#include <base/time.h>
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#include "metrics_library.h"
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namespace chromeos_metrics {
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base::TimeTicks ClockWrapper::GetCurrentTime() const {
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return base::TimeTicks::Now();
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}
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Timer::Timer()
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: is_started_(false),
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clock_wrapper_(new ClockWrapper()) {}
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bool Timer::Start() {
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start_time_ = clock_wrapper_->GetCurrentTime();
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is_started_ = true;
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return true;
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}
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bool Timer::Stop() {
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// Check if the timer has been started.
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if (!is_started_) return false;
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is_started_ = false;
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elapsed_time_ = clock_wrapper_->GetCurrentTime() - start_time_;
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return true;
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}
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bool Timer::Reset() {
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is_started_ = false;
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return true;
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}
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bool Timer::HasStarted() const {
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return is_started_;
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}
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bool Timer::GetElapsedTime(base::TimeDelta* elapsed_time) const {
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if (start_time_.is_null() || !elapsed_time) return false;
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if (is_started_) {
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*elapsed_time = clock_wrapper_->GetCurrentTime() - start_time_;
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} else {
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*elapsed_time = elapsed_time_;
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}
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return true;
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}
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// static
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MetricsLibraryInterface* TimerReporter::metrics_lib_ = NULL;
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TimerReporter::TimerReporter(const std::string& histogram_name, int min,
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int max, int num_buckets)
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: histogram_name_(histogram_name),
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min_(min),
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max_(max),
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num_buckets_(num_buckets) {}
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bool TimerReporter::ReportMilliseconds() const {
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base::TimeDelta elapsed_time;
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if (!metrics_lib_ || !GetElapsedTime(&elapsed_time)) return false;
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return metrics_lib_->SendToUMA(histogram_name_,
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elapsed_time.InMilliseconds(),
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min_,
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max_,
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num_buckets_);
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}
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} // namespace chromeos_metrics
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