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DKTimer.h
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DKTimer.h
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/*******************************************************************************
File: DKTimer.h
Author: Hongtae Kim ([email protected])
Copyright (c) 2015,2017 Hongtae Kim. All rights reserved.
NOTE: This is simplified 'Memory Allocator' part of DKGL.
Full version of DKGL: https://github.com/DKGL/DKGL
License: BSD-3
*******************************************************************************/
/*******************************************************************************
Copyright (c) 2015, Hongtae Kim.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* 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.
* Neither the name of DKMalloc nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*******************************************************************************/
#pragma once
typedef unsigned long DKTimeTick; // counter type default.
typedef unsigned int DKTimeTick32; // 32bit counter type.
typedef unsigned long long DKTimeTick64; // 64bit counter type.
class DKTimer
{
public:
typedef DKTimeTick64 Tick; // using 64 bit counter.
DKTimer(void);
~DKTimer(void);
// reset timer, returns time elapsed since previous reset.
double Reset(void);
// returns elapsed timer since time since last reset.
double Elapsed(void) const;
static Tick SystemTick(void); // system tick
static Tick SystemTickFrequency(void); // tick frequency (a sec)
private:
Tick timeStamp;
};