add missing semaphore.h

1 files changed, 31 insertions, 0 deletions

diff --git a/system/include/semaphore.h b/system/include/semaphore.h
new file mode 100644
index 00000000..6ea1553c
--- /dev/null
+++ b/system/include/semaphore.h
@@ -0,0 +1,31 @@
+
+#ifndef _SYS_SEMAPHORE_H
+#define _SYS_SEMAPHORE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int sem_t;
+
+sem_t *sem_open(const char *, int, ...);
+int    sem_close(sem_t *);
+
+int    sem_init(sem_t *, int, unsigned);
+int    sem_destroy(sem_t *);
+
+int    sem_getvalue(sem_t *, int *);
+int    sem_post(sem_t *);
+
+int    sem_timedwait(sem_t *, const struct timespec *);
+int    sem_trywait(sem_t *);
+int    sem_wait(sem_t *);
+
+int    sem_unlink(const char *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+