initial import of NetBSD tree

1 files changed, 93 insertions, 0 deletions

diff --git a/lib/libpthread/include/mutex.h b/lib/libpthread/include/mutex.h
new file mode 100644
index 00000000000..d8e5d8939d2
--- /dev/null
+++ b/lib/libpthread/include/mutex.h
@@ -0,0 +1,93 @@
+/* ==== mutex.h ============================================================
+ * Copyright (c) 1993 by Chris Provenzano, proven@mit.edu
+ * 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, 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *  This product includes software developed by Chris Provenzano.
+ * 4. The name of Chris Provenzano may not be used to endorse or promote 
+ *	  products derived from this software without specific prior written
+ *	  permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``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 CHRIS PROVENZANO 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.
+ *
+ * $Id: mutex.h,v 1.1 1995/10/18 08:43:04 deraadt Exp $ $provenid: mutex.h,v 1.17 1994/02/07 03:31:59 proven Exp $
+ *
+ * Description : mutex header.
+ *
+ *  1.00 93/07/20 proven
+ *      -Started coding this file.
+ */
+ 
+/*
+ * New mutex structures
+ */
+enum pthread_mutex_type {
+	MUTEX_TYPE_FAST,
+	MUTEX_TYPE_STATIC_FAST,
+	MUTEX_TYPE_RECURSIVE,
+	MUTEX_TYPE_METERED,
+	MUTEX_TYPE_DEBUG, /* Debug mutexes will have lots of options */
+	MUTEX_TYPE_MAX
+};
+
+typedef struct pthread_mutex {
+	enum pthread_mutex_type	m_type;
+	struct pthread_queue	m_queue;
+	struct pthread			*m_owner;
+	semaphore				m_lock;	
+	void					*m_data;
+	long					m_flags;
+} pthread_mutex_t;
+
+typedef struct pthread_mutex_attr {
+	enum pthread_mutex_type	m_type;
+	long					m_flags;
+} pthread_mutexattr_t;
+
+/*
+ * Flags for mutexes.
+ */
+#define MUTEX_FLAGS_PRIVATE	0x01
+#define MUTEX_FLAGS_INITED	0x02
+#define MUTEX_FLAGS_BUSY	0x04
+
+/*
+ * Static mutex initialization values.
+ */
+#define PTHREAD_MUTEX_INITIALIZER	\
+{ MUTEX_TYPE_STATIC_FAST, PTHREAD_QUEUE_INITIALIZER, \
+	 NULL, SEMAPHORE_CLEAR, NULL, MUTEX_FLAGS_INITED }
+
+/*
+ * New functions
+ */
+
+__BEGIN_DECLS
+
+int     pthread_mutex_init  	__P((pthread_mutex_t *, pthread_mutexattr_t *));
+int     pthread_mutex_lock      __P((pthread_mutex_t *));
+int     pthread_mutex_unlock    __P((pthread_mutex_t *));
+int     pthread_mutex_trylock   __P((pthread_mutex_t *));
+int     pthread_mutex_destroy   __P((pthread_mutex_t *));
+
+__END_DECLS
+