mirror of https://github.com/ZDoom/raze-gles.git
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
/*
|
|
** i_time.cpp
|
|
** Implements the timer
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 1998-2016 Randy Heit
|
|
** Copyright 2017 Magnus Norddahl
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include <chrono>
|
|
#include <thread>
|
|
#include "i_time.h"
|
|
#include "c_cvars.h"
|
|
#include "printf.h"
|
|
|
|
//==========================================================================
|
|
//
|
|
// Tick time functions
|
|
//
|
|
//==========================================================================
|
|
|
|
static double TimeScale = 1.0;
|
|
|
|
static uint64_t GetClockTimeNS()
|
|
{
|
|
using namespace std::chrono;
|
|
return (uint64_t)((duration_cast<microseconds>(steady_clock::now().time_since_epoch()).count()) * (uint64_t)(TimeScale * 1000));
|
|
}
|
|
|
|
static uint64_t MSToNS(unsigned int ms)
|
|
{
|
|
return static_cast<uint64_t>(ms) * 1'000'000;
|
|
}
|
|
|
|
static uint64_t NSToMS(uint64_t ns)
|
|
{
|
|
return static_cast<uint64_t>(ns / 1'000'000);
|
|
}
|
|
|
|
uint64_t I_nsTime()
|
|
{
|
|
return GetClockTimeNS();
|
|
}
|
|
|
|
uint64_t I_msTime()
|
|
{
|
|
return NSToMS(I_nsTime());
|
|
}
|
|
|