diff options
Diffstat (limited to 'sem_post_multiple.c')
| -rw-r--r-- | sem_post_multiple.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sem_post_multiple.c b/sem_post_multiple.c index 43c71a6..e30e01a 100644 --- a/sem_post_multiple.c +++ b/sem_post_multiple.c @@ -76,6 +76,9 @@ sem_post_multiple (sem_t * sem, int count) */ { int result = 0; +#ifndef NEED_SEM + long waiters; +#endif if (sem == NULL || *sem == NULL || count <= 0) { @@ -88,7 +91,8 @@ sem_post_multiple (sem_t * sem, int count) #else /* NEED_SEM */ - else if (!ReleaseSemaphore ((*sem)->sem, count, 0)) + else if ((waiters = -InterlockedExchangeAdd((LPLONG) &(*sem)->value, (LONG) count)) > 0 + && !ReleaseSemaphore((*sem)->sem, (waiters<=count)?waiters:count, 0)) #endif /* NEED_SEM */ |