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//
// Copyright 2019 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Timer.cpp: Implementation of a high precision timer class.
//
#include "util/Timer.h"
#include "common/system_utils.h"
Timer::Timer() : mRunning(false), mStartTime(0), mStopTime(0) {}
void Timer::start()
{
mStartTime = angle::GetCurrentSystemTime();
mStartCpuTime = angle::GetCurrentProcessCpuTime();
mRunning = true;
}
void Timer::stop()
{
mStopTime = angle::GetCurrentSystemTime();
mStopCpuTime = angle::GetCurrentProcessCpuTime();
mRunning = false;
}
double Timer::getElapsedWallClockTime() const
{
double endTime;
if (mRunning)
{
endTime = angle::GetCurrentSystemTime();
}
else
{
endTime = mStopTime;
}
return endTime - mStartTime;
}
double Timer::getElapsedCpuTime() const
{
double endTime;
if (mRunning)
{
endTime = angle::GetCurrentProcessCpuTime();
}
else
{
endTime = mStopCpuTime;
}
return endTime - mStartCpuTime;
}
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