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/** @file timer.h
*
* @brief timer functions.
*
* @author Hanjie Wu (hanjiew)
* @bug No functional bugs
*/
#ifndef _TIMER_H_
#define _TIMER_H_
/** ticks passed */
extern unsigned int ticks;
/** timer heap lock */
extern spl_t timer_lock;
/** timers of sleeping threads */
extern heap_t timers;
/**
* @brief initialize the timer
*/
void timer_init();
#endif
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