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use bss instead of mmap for main thread's pthread thread-specific data
[oweals/musl.git]
/
src
/
thread
/
sem_trywait.c
diff --git
a/src/thread/sem_trywait.c
b/src/thread/sem_trywait.c
index d0e928ef67d2048f4bbf1f1214a30407d8dbe7c8..c5370c70a7f397751d7a124df03a5c1afe78eec9 100644
(file)
--- a/
src/thread/sem_trywait.c
+++ b/
src/thread/sem_trywait.c
@@
-5,7
+5,8
@@
int sem_trywait(sem_t *sem)
{
int val = a_fetch_add(sem->__val, -1);
if (val > 0) return 0;
- a_inc(sem->__val);
+ if (!a_fetch_add(sem->__val, 1))
+ __wake(sem->__val, 1, 0);
errno = EAGAIN;
return -1;
}