mailing list of musl libc
 help / color / mirror / code / Atom feed
8132eb1bf7a276d9b2dd2c9c978bbc0f0b29b7f4 blob 634 bytes (raw)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
#include <semaphore.h>
#include "pthread_impl.h"

static void cleanup(void *p)
{
	a_dec(p);
}

int sem_timedwait(sem_t *restrict sem, const struct timespec *restrict at)
{
	pthread_testcancel();

	if (!sem_trywait(sem)) return 0;

	int spins = 100;
	while (spins-- && sem->__val[0] <= 0 && !sem->__val[1]) a_spin();

	while (sem_trywait(sem)) {
		int r;
		a_inc(sem->__val+1);
		a_cas(sem->__val, 0, -1);
		pthread_cleanup_push(cleanup, (void *)(sem->__val+1));
		r = __timedwait_cp(sem->__val, -1, CLOCK_REALTIME, at, sem->__val[2]);
		pthread_cleanup_pop(1);
		if (r && r != EINTR) {
			errno = r;
			return -1;
		}
	}
	return 0;
}
debug log:

solving 8132eb1b ...
found 8132eb1b in https://git.vuxu.org/mirror/musl/

Code repositories for project(s) associated with this public inbox

	https://git.vuxu.org/mirror/musl/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).