1 files changed, 32 insertions, 0 deletions
diff --git a/src/nxt_semaphore.h b/src/nxt_semaphore.h
new file mode 100644
index 00000000..d1985342
--- /dev/null
+++ b/src/nxt_semaphore.h
@@ -0,0 +1,32 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ */
+
+#ifndef _NXT_UNIX_SEMAPHORE_H_INCLUDED_
+#define _NXT_UNIX_SEMAPHORE_H_INCLUDED_
+
+
+#if (NXT_HAVE_SEM_TIMEDWAIT)
+
+typedef sem_t           nxt_sem_t;
+
+#else
+
+typedef struct {
+    nxt_atomic_t        count;
+    nxt_thread_mutex_t  mutex;
+    nxt_thread_cond_t   cond;
+} nxt_sem_t;
+
+#endif
+
+
+NXT_EXPORT nxt_int_t nxt_sem_init(nxt_sem_t *sem, nxt_uint_t count);
+NXT_EXPORT void nxt_sem_destroy(nxt_sem_t *sem);
+NXT_EXPORT nxt_int_t nxt_sem_post(nxt_sem_t *sem);
+NXT_EXPORT nxt_err_t nxt_sem_wait(nxt_sem_t *sem, nxt_nsec_t timeout);
+
+
+#endif /* _NXT_UNIX_SEMAPHORE_H_INCLUDED_ */