void
timer_Show()
{
struct itimerval itimer;
struct btTimer *pt;
long rest;
/*
* Adjust the base time so that the deltas reflect what's really
* happening. Changing TimerList->rest might cause it to become zero
* (if getitimer() returns a value close to zero), and the
* timer_InitService() call will call setitimer() with zero it_value,
* stopping the itimer... so be careful!
*/
if (TimerList && getitimer(ITIMER_REAL, &itimer) == 0)
rest = RESTVAL(itimer) - TimerList->rest;
else
rest = 0;
#define SECS(val) ((val) / SECTICKS)
#define HSECS(val) (((val) % SECTICKS) * 100 / SECTICKS)
#define DISP \
"%s timer[%p]: freq = %ld.%02lds, next = %lu.%02lus, state = %s\n", \
pt->name, pt, SECS(pt->load), HSECS(pt->load), SECS(rest), \
HSECS(rest), tState2Nam(pt->state)
ALOGI("---- Begin of Timer Service List---\n");
for (pt = TimerList; pt; pt = pt->next) {
rest += pt->rest;
ALOGI(DISP);
}
ALOGI("---- End of Timer Service List ---\n");
}
void
timer_Start(struct pppTimer *tp)
{
struct itimerval itimer;
struct pppTimer *t, *pt;
u_long ticks = 0;
sigset_t mask, omask;
sigemptyset(&mask);
sigaddset(&mask, SIGALRM);
sigprocmask(SIG_BLOCK, &mask, &omask);
if (tp->state != TIMER_STOPPED)
StopTimerNoBlock(tp);
if (tp->load == 0) {
log_Printf(LogTIMER, "%s timer[%p] has 0 load!\n", tp->name, tp);
sigprocmask(SIG_SETMASK, &omask, NULL);
return;
}
/*
* We just need to insert tp in the correct relative place. We don't
* need to adjust TimerList->rest (yet).
*/
if (TimerList && getitimer(ITIMER_REAL, &itimer) == 0)
ticks = RESTVAL(itimer) - TimerList->rest;
pt = NULL;
for (t = TimerList; t; t = t->next) {
if (ticks + t->rest >= tp->load)
break;
ticks += t->rest;
pt = t;
}
tp->state = TIMER_RUNNING;
tp->rest = tp->load - ticks;
if (t)
log_Printf(LogTIMER, "timer_Start: Inserting %s timer[%p] before %s "
"timer[%p], delta = %ld\n", tp->name, tp, t->name, t, tp->rest);
else
log_Printf(LogTIMER, "timer_Start: Inserting %s timer[%p]\n", tp->name, tp);
/* Insert given *tp just before *t */
tp->next = t;
if (pt) {
pt->next = tp;
} else {
TimerList = tp;
timer_InitService(t != NULL); /* [re]Start the Timer Service */
}
if (t)
t->rest -= tp->rest;
sigprocmask(SIG_SETMASK, &omask, NULL);
}
static void
StopTimerNoBlock(struct pppTimer *tp)
{
struct itimerval itimer;
struct pppTimer *t, *pt;
/*
* A RUNNING timer must be removed from TimerList (->next list).
* A STOPPED timer isn't in any list, but may have a bogus [e]next field.
* An EXPIRED timer is in the ->enext list.
*/
if (tp->state == TIMER_STOPPED)
return;
pt = NULL;
for (t = TimerList; t != tp && t != NULL; t = t->next)
pt = t;
if (t) {
if (pt)
pt->next = t->next;
else {
TimerList = t->next;
if (TimerList == NULL) /* Last one ? */
timer_TermService(); /* Terminate Timer Service */
}
if (t->next) {
if (!pt && getitimer(ITIMER_REAL, &itimer) == 0)
t->next->rest += RESTVAL(itimer); /* t (tp) was the first in the list */
else
t->next->rest += t->rest;
if (!pt && t->next->rest > 0) /* t->next is now the first in the list */
timer_InitService(1);
}
} else {
/* Search for any pending expired timers */
pt = NULL;
for (t = ExpiredList; t != tp && t != NULL; t = t->enext)
pt = t;
if (t) {
if (pt)
pt->enext = t->enext;
else
ExpiredList = t->enext;
} else if (tp->state == TIMER_RUNNING)
log_Printf(LogERROR, "Oops, %s timer not found!!\n", tp->name);
}
tp->next = tp->enext = NULL;
tp->state = TIMER_STOPPED;
}
