mirror of
https://github.com/ziglang/zig.git
synced 2026-01-28 18:25:26 +00:00
49d1a4c562
also start prefering NtDll API. so far: * NtQueryInformationFile * NtClose adds a performance workaround for windows unicode conversion. but that should probably be removed before merging
18 lines
366 B
C
18 lines
366 B
C
#include <semaphore.h>
|
|
#include "pthread_impl.h"
|
|
|
|
int sem_post(sem_t *sem)
|
|
{
|
|
int val, waiters, priv = sem->__val[2];
|
|
do {
|
|
val = sem->__val[0];
|
|
waiters = sem->__val[1];
|
|
if (val == SEM_VALUE_MAX) {
|
|
errno = EOVERFLOW;
|
|
return -1;
|
|
}
|
|
} while (a_cas(sem->__val, val, val+1+(val<0)) != val);
|
|
if (val<0 || waiters) __wake(sem->__val, 1, priv);
|
|
return 0;
|
|
}
|