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/*
* Copyright (c) 2005, Eric Crahen
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef __ZTTIMESTRATEGY_H__
#define __ZTTIMESTRATEGY_H__
#include <CoreServices/CoreServices.h>
//#include <DriverServices.h>
namespace ZThread {
/**
* @class TimeStrategy
*
* Implement a strategy for time operatons based on UpTime
*/
class TimeStrategy {
unsigned long _ms;
unsigned long _s;
public:
TimeStrategy() {
// Get the absolute time in milliseconds relative to the program startup
static AbsoluteTime sysUpTime(UpTime());
AbsoluteTime delta = AbsoluteDeltaToNanoseconds(UpTime(), sysUpTime);
uint64_t now = *reinterpret_cast<uint64_t*>(&delta) / 1000000;
_s = now / 1000;
_ms = now % 1000;
}
inline unsigned long seconds() const {
return _s;
}
inline unsigned long milliseconds() const {
return _ms;
}
unsigned long seconds(unsigned long s) {
unsigned long z = seconds();
_s = s;
return z;
}
unsigned long milliseconds(unsigned long ms) {
unsigned long z = milliseconds();
_ms = ms;
return z;
}
};
};
#endif // __ZTTIMESTRATEGY_H__
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