move rsyscall out of pthread_create module

[musl] / src / thread / sem_trywait.c

diff --git a/src/thread/sem_trywait.c b/src/thread/sem_trywait.c
index d0e928e..beb7aa5 100644 (file)
--- a/src/thread/sem_trywait.c
+++ b/src/thread/sem_trywait.c
@@ -3,9 +3,9 @@
 
 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) > 0) return 0;
+       if (!a_fetch_add(sem->__val, 1) && sem->__val[1])
+               __wake(sem->__val, 1, 0);
        errno = EAGAIN;
        return -1;
 }