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have new timer threads unblock their own SIGTIMER

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unblocking it in the pthread_once init function is not sufficient,
since multiple threads, some of them with the signal blocked, could
already exist before this is called; timers started from such threads
would be non-functional.
This commit is contained in:
Rich Felker 2013-08-03 17:10:42 -04:00
parent 7c6c290695
commit a7f18a5529
1 changed files with 2 additions and 2 deletions
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4
src/time/timer_create.c
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@ -55,8 +55,6 @@ static void install_handler()
.sa_flags = SA_SIGINFO | SA_RESTART .sa_flags = SA_SIGINFO | SA_RESTART
}; };
__libc_sigaction(SIGTIMER, &sa, 0); __libc_sigaction(SIGTIMER, &sa, 0);
__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK,
SIGTIMER_SET, 0, _NSIG/8);
} }
static void *start(void *arg) static void *start(void *arg)
@ -72,6 +70,8 @@ static void *start(void *arg)
pthread_barrier_wait(&args->b); pthread_barrier_wait(&args->b);
if ((id = self->timer_id) >= 0) { if ((id = self->timer_id) >= 0) {
__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK,
SIGTIMER_SET, 0, _NSIG/8);
__wait(&self->timer_id, 0, id, 1); __wait(&self->timer_id, 0, id, 1);
__syscall(SYS_timer_delete, id); __syscall(SYS_timer_delete, id);
} }