1 files changed, 64 insertions, 0 deletions
diff --git a/include/semaphore.h b/include/semaphore.h
new file mode 100644
index 000000000000..3531353d0d3a
--- /dev/null
+++ b/include/semaphore.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2010 David Xu <davidxu@freebsd.org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/* semaphore.h: POSIX 1003.1b semaphores */
+
+#ifndef _SEMAPHORE_H_
+#define _SEMAPHORE_H_
+
+#include <sys/cdefs.h>
+#include <sys/_types.h>
+#include <sys/_umtx.h>
+
+struct _sem {
+	__uint32_t	_magic;
+	struct _usem	_kern;
+};
+
+typedef	struct _sem	sem_t;
+
+#define	SEM_FAILED	((sem_t *)0)
+#define	SEM_VALUE_MAX	__INT_MAX
+
+struct timespec;
+
+__BEGIN_DECLS
+int	 sem_close(sem_t *);
+int	 sem_destroy(sem_t *);
+int	 sem_getvalue(sem_t * __restrict, int * __restrict);
+int	 sem_init(sem_t *, int, unsigned int);
+sem_t	*sem_open(const char *, int, ...);
+int	 sem_post(sem_t *);
+int	 sem_timedwait(sem_t * __restrict, const struct timespec * __restrict);
+int	 sem_trywait(sem_t *);
+int	 sem_unlink(const char *);
+int	 sem_wait(sem_t *);
+__END_DECLS
+
+#endif /* !_SEMAPHORE_H_ */