implement POSIX semaphores

[musl] / src / thread / sem_init.c

diff --git a/src/thread/sem_init.c b/src/thread/sem_init.c
new file mode 100644 (file)
index 0000000..70f06e9
--- /dev/null
+++ b/src/thread/sem_init.c
@@ -0,0 +1,13 @@
+#include <semaphore.h>
+#include <limits.h>
+#include <errno.h>
+
+int sem_init(sem_t *sem, int pshared, unsigned value)
+{
+       if (value > SEM_VALUE_MAX) {
+               errno = EINVAL;
+               return -1;
+       }
+       sem->__val[0] = value;
+       return 0;
+}