libpthread/

2005-05-12  Neal H. Walfield  <neal@gnu.org>

	* Makefile (SRCS): Add sem-close.c sem-destroy.c sem-getvalue.c
	sem-init.c sem-open.c sem-post.c sem-timedwait.c sem-trywait.c
	sem-unlink.c and sem-wait.c.
	(sysdeps_headers): Add semaphore.h bits/semaphore.h.
	* include/semaphore.h: New file.
	* sysdeps/generic/sem-close.c: New file.
	* sysdeps/generic/sem-destroy.c: New file.
	* sysdeps/generic/sem-getvalue.c: New file.
	* sysdeps/generic/sem-init.c: New file.
	* sysdeps/generic/sem-open.c: New file.
	* sysdeps/generic/sem-post.c: New file.
	* sysdeps/generic/sem-timedwait.c: New file.
	* sysdeps/generic/sem-trywait.c: New file.
	* sysdeps/generic/sem-unlink.c: New file.
	* sysdeps/generic/sem-wait.c: New file.
	* sysdeps/generic/bits/semaphore.h: New file.

1 files changed, 67 insertions, 0 deletions

diff --git a/include/semaphore.h b/include/semaphore.h
new file mode 100644
index 0000000..5775925
--- /dev/null
+++ b/include/semaphore.h
@@ -0,0 +1,67 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SEMAPHORE_H
+#define _SEMAPHORE_H	1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+#include <bits/semaphore.h>
+
+#define SEM_FAILED ((void *) 0)
+
+typedef struct __semaphore sem_t;
+
+/* Initialize semaphore *SEM with value VALUE.  */
+extern int sem_init (sem_t *sem, int pshared, unsigned value);
+
+/* Destroy semaphore *SEM created with sem_init.  */
+extern int sem_destroy (sem_t *sem);
+
+/* Store the value of semaphore *SEM in *VALUE.  */
+extern int sem_getvalue (sem_t *restrict sem, int *restrict value);
+
+/* Perform a down operation on semaphore *SEM.  */
+extern int sem_wait (sem_t *sem);
+
+/* Perform a down operation on semaphore *SEM if it can be done so
+   without blocking.  */
+extern int sem_trywait (sem_t *sem);
+
+/* Perform a down operation on semaphore *SEM but don't wait longer
+   than TIMEOUT.  */
+extern int sem_timedwait (sem_t *restrict sem,
+			  const struct timespec *restrict timeout);
+
+/* Perform an up operation on semaphore *SEM.  */
+extern int sem_post (sem_t *sem);
+
+/* Open a named semaphore.  */
+extern sem_t *sem_open (const char *name, int open_flags, ...);
+
+/* Close a semaphore returned by sem_open.  */
+extern int sem_close (sem_t *sem);
+
+/* Unlink a named semaphore.  */
+extern int sem_unlink (const char *name);
+
+__END_DECLS
+
+#endif /* semaphore.h */