timer.cpp
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timer.cpp
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	#include <time.h>
	#include "r-tech1/timer.h"
	#include "r-tech1/init.h"
	#include "r-tech1/funcs.h"
	#include "r-tech1/thread.h"

	namespace Util{

	void * do_wait(void * timer_){
	Timer * timer = (Timer *) timer_;
	unsigned int now = Global::second_counter;
	/* add 1 because the current time is in between X and X+1 */
	while (Global::second_counter - now < timer->wait+1){
	Util::rest(50);
	bool do_stop = false;
	Thread::acquireLock(&timer->lock);
	do_stop = timer->stopped;
	Thread::releaseLock(&timer->lock);
	if (do_stop){
	return NULL;
	}
	}
	timer->func(timer->arg);
	return NULL;
	}

	Timer::Timer(unsigned int seconds_to_wait, timeout func, void * arg):
	wait(seconds_to_wait),
	func(func),
	arg(arg),
	stopped(false){
	Thread::initializeLock(&lock);
	Thread::createThread(&timer, NULL, (Util::Thread::ThreadFunction) do_wait, this);
	}

	void Timer::stop(){
	Thread::acquireLock(&lock);
	stopped = true;
	Thread::releaseLock(&lock);
	Thread::joinThread(timer);
	}

	}