Files
godot-angle-static/util/linux/LinuxTimer.cpp
Corentin Wallez fe2f3d634d Add a basic support for Linux for utils/
* Timer and path utils are done.
* Window only implements initialize and setVisible

BUG=angleproject:892

Change-Id: I3f49b68ef9ec5be324b25e211199bac2953ae11e
Reviewed-on: https://chromium-review.googlesource.com/269520
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>
2015-05-07 15:01:04 +00:00

47 lines
893 B
C++

//
// Copyright (c) 2015 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.
//
// LinuxTimer.cpp: Implementation of a high precision timer class on Linux
#include "linux/LinuxTimer.h"
LinuxTimer::LinuxTimer()
: mRunning(false)
{
}
void LinuxTimer::start()
{
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &mStartTime);
mRunning = true;
}
void LinuxTimer::stop()
{
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &mStopTime);
mRunning = false;
}
double LinuxTimer::getElapsedTime() const
{
struct timespec endTime;
if (mRunning)
{
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &endTime);
}
else
{
endTime = mStopTime;
}
return endTime.tv_sec + (1.0 / 1000000000) * endTime.tv_nsec;
}
Timer *CreateTimer()
{
return new LinuxTimer();
}