struct start_args {
pthread_barrier_t b;
struct sigevent *sev;
- timer_t t;
};
static void sighandler(int sig, siginfo_t *si, void *ctx)
pthread_setcancelstate(st, 0);
}
-static void killtimer(void *arg)
-{
- timer_t t = arg;
- if (t->timerid >= 0) __syscall(SYS_timer_delete, t->timerid);
-}
-
static void *start(void *arg)
{
pthread_t self = __pthread_self();
struct start_args *args = arg;
- struct __timer t = { .timerid = -1 };
/* Reuse no-longer-needed thread structure fields to avoid
* needing the timer address in the signal handler. */
self->start = (void *(*)(void *))args->sev->sigev_notify_function;
self->start_arg = args->sev->sigev_value.sival_ptr;
- args->t = &t;
+ self->result = (void *)-1;
- pthread_cleanup_push(killtimer, &t);
pthread_barrier_wait(&args->b);
pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, 0);
/* Loop on async-signal-safe cancellation point */
for (;;) sleep(1);
- pthread_cleanup_pop(1);
return 0;
}
ksev.sigev_tid = 0;
if (syscall(SYS_timer_create, clk, &ksev, &timerid) < 0)
return -1;
- if (!(t = calloc(1, sizeof *t))) {
- syscall(SYS_timer_delete, timerid);
- return -1;
- }
- t->timerid = timerid;
+ *res = (void *)(2*timerid+1);
break;
case SIGEV_THREAD:
if (!libc.sigtimer) libc.sigtimer = sighandler;
ksev.sigev_tid = td->tid;
r = syscall(SYS_timer_create, clk, &ksev, &timerid);
pthread_barrier_wait(&args.b);
- t = args.t;
if (r < 0) {
pthread_cancel(td);
return -1;
}
- t->timerid = timerid;
- t->thread = td;
+ td->result = (void *)timerid;
+ *res = td;
break;
default:
errno = EINVAL;
return -1;
}
- *res = t;
return 0;
}
int timer_delete(timer_t t)
{
- if (t->thread) pthread_cancel(t->thread);
- else {
- __syscall(SYS_timer_delete, t->timerid);
- free(t);
- }
- return 0;
+ pthread_t td = 0;
+ int r;
+ if ((uintptr_t)t & 1) t = (void *)((unsigned long)t / 2);
+ else td = t, t = td->result;
+ r = __syscall(SYS_timer_delete, (long)t);
+ if (td) pthread_cancel(td);
+ return r;
}
int timer_gettime(timer_t t, struct itimerspec *val)
{
- return syscall(SYS_timer_gettime, t->timerid, val);
+ if ((uintptr_t)t & 1) t = (void *)((unsigned long)t / 2);
+ else t = ((pthread_t)t)->result;
+ return syscall(SYS_timer_gettime, (long)t, val);
}
int timer_settime(timer_t t, int flags, const struct itimerspec *val, struct itimerspec *old)
{
- return syscall(SYS_timer_settime, t->timerid, flags, val, old);
+ if ((uintptr_t)t & 1) t = (void *)((unsigned long)t / 2);
+ else t = ((pthread_t)t)->result;
+ return syscall(SYS_timer_settime, (long)t, flags, val, old);
}