int ami_schedule_compare(const void *prev, const void *next)
{
struct nscallback *nscb1 = *(struct nscallback **)prev;
struct nscallback *nscb2 = *(struct nscallback **)next;
return CmpTime(&nscb1->tv, &nscb2->tv);
}
void schedule_run(BOOL poll)
{
struct nscallback *nscb;
void (*callback)(void *p);
void *p;
struct TimeVal tv;
nscb = pblHeapGetFirst(schedule_list);
if(nscb == -1) return;
if(poll)
{
/* Ensure the scheduled event time has passed (CmpTime<=0)
* For timer signalled events this must *always* be true,
* so we save some time by only checking if we're polling.
*/
GetSysTime(&tv);
if(CmpTime(&tv, &nscb->tv) > 0) return;
}
callback = nscb->callback;
p = nscb->p;
ami_remove_timer_event(nscb);
pblHeapRemoveFirst(schedule_list);
FreeVec(nscb);
callback(p);
}
static dat CmpCallTime(msgport m1, msgport m2) {
if ((!m1->FirstMsg) != (!m2->FirstMsg))
/* one of the two doesn't have msgs */
return m1->FirstMsg ? (dat)-1 : (dat)1;
if ((!m1->WakeUp) != (!m2->WakeUp))
/* one doesn't need to be called */
return m1->WakeUp ? (dat)-1 : (dat)1;
if ((!m1->WakeUp) && (!m2->WakeUp))
return 0;
return CmpTime(&m1->CallTime, &m2->CallTime);
}