minix/lib/libtimers/tmrs_exp.c

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#include "timers.h"
/*===========================================================================*
* tmrs_exptimers *
*===========================================================================*/
void tmrs_exptimers(tmrs, now, new_head)
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timer_t **tmrs; /* pointer to timers queue */
clock_t now; /* current time */
clock_t *new_head;
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{
/* Use the current time to check the timers queue list for expired timers.
* Run the watchdog functions for all expired timers and deactivate them.
* The caller is responsible for scheduling a new alarm if needed.
*/
timer_t *tp;
while ((tp = *tmrs) != NULL && tp->tmr_exp_time <= now) {
*tmrs = tp->tmr_next;
tp->tmr_exp_time = TMR_NEVER;
(*tp->tmr_func)(tp);
}
if(new_head) {
if(*tmrs)
*new_head = (*tmrs)->tmr_exp_time;
else
*new_head = 0;
}
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}