f5759c5149
[ Merge of http://go/wvgerrit/137811 ] Renamed TimerMetric to Timer. Timer is used to generate durations included in metrics, but is not a metric itself. The method of getting the current time did not require creating an instance of std::steady_clock. Updated Distribution and Timer to use default initializers instead of constructor initialization list. Bug: 204946540 Test: Metric unit tests Change-Id: I7ed291b586347dd0b7ab305960883bec04637315
33 lines
1023 B
C++
33 lines
1023 B
C++
// Copyright 2017 Google LLC. All Rights Reserved. This file and proprietary
|
|
// source code may only be used and distributed under the Widevine License
|
|
// Agreement.
|
|
#ifndef WVCDM_METRICS_TIMER_METRIC_H_
|
|
#define WVCDM_METRICS_TIMER_METRIC_H_
|
|
#include <chrono>
|
|
|
|
namespace wvcdm {
|
|
namespace metrics {
|
|
class Timer {
|
|
public:
|
|
Timer() {}
|
|
// Starts the clock running. If the clock was previously set, this resets it.
|
|
// IsStarted will return true after this call.
|
|
void Start();
|
|
// Returns whether or not the timer has started.
|
|
bool IsStarted() const { return is_started_; }
|
|
// Stops the clock and clears the current value. IsStarted will return false
|
|
// after this call.
|
|
void Clear();
|
|
// Returns the current clock value as milliseconds (AsMs) or microseconds
|
|
// (AsUs).
|
|
double AsMs() const;
|
|
double AsUs() const;
|
|
|
|
private:
|
|
std::chrono::time_point<std::chrono::steady_clock> start_;
|
|
bool is_started_ = false;
|
|
};
|
|
} // namespace metrics
|
|
} // namespace wvcdm
|
|
#endif // WVCDM_METRICS_TIMER_METRIC_H_
|