Add hash.h, queue.h and tree.h from NetBSD-CURRENT.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@46 d4fa192b-c00b-0410-8231-f00ffab90ce4

include/Makefile.am

 # $Id$
 
 include_HEADERS = \
+	hash.h \
+	queue.h \
+	sbuf.h \
+	tree.h \
 	varnish/assert.h \
 	varnishapi.h
 

include/hash.h

+/*	$Id$ */
+/*	$NetBSD: hash.h,v 1.5 2006/02/16 20:17:20 perry Exp $	*/
+
+/*-
+ * Copyright (c) 2001 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Luke Mewburn.
+ *
+ * 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 the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#ifndef	_SYS_HASH_H_
+#define	_SYS_HASH_H_
+
+#include <sys/types.h>
+#ifdef __HAVE_MACHINE_HASH_H
+#include <machine/hash.h>
+#endif
+
+
+#ifndef __HAVE_HASH32_BUF			/* not overridden by MD hash */
+
+#define	HASH32_BUF_INIT	5381
+
+/*
+ * uint32_t
+ * hash32_buf(const void *bf, size_t len, uint32_t hash)
+ *	return a 32 bit hash of the binary buffer buf (size len),
+ *	seeded with an initial hash value of hash (usually HASH32_BUF_INIT).
+ */
+static __inline uint32_t
+hash32_buf(const void *bf, size_t len, uint32_t hash)
+{
+	const uint8_t *s = bf;
+
+	while (len-- != 0)			/* "nemesi": k=257, r=r*257 */
+		hash = hash * 257 + *s++;
+	return (hash * 257);
+}
+#endif	/* __HAVE_HASH32_BUF */
+
+
+#ifndef __HAVE_HASH32_STR			/* not overridden by MD hash */
+
+#define	HASH32_STR_INIT	5381
+/*
+ * uint32_t
+ * hash32_str(const void *bf, uint32_t hash)
+ *	return a 32 bit hash of NUL terminated ASCII string buf,
+ *	seeded with an initial hash value of hash (usually HASH32_STR_INIT).
+ */
+static __inline uint32_t
+hash32_str(const void *bf, uint32_t hash)
+{
+	const uint8_t *s = bf;
+	uint8_t	c;
+
+	while ((c = *s++) != 0)
+		hash = hash * 33 + c;		/* "perl": k=33, r=r+r/32 */
+	return (hash + (hash >> 5));
+}
+
+/*
+ * uint32_t
+ * hash32_strn(const void *bf, size_t len, uint32_t hash)
+ *	return a 32 bit hash of NUL terminated ASCII string buf up to
+ *	a maximum of len bytes,
+ *	seeded with an initial hash value of hash (usually HASH32_STR_INIT).
+ */
+static __inline uint32_t
+hash32_strn(const void *bf, size_t len, uint32_t hash)
+{
+	const uint8_t	*s = bf;
+	uint8_t	c;
+
+	while ((c = *s++) != 0 && len-- != 0)
+		hash = hash * 33 + c;		/* "perl": k=33, r=r+r/32 */
+	return (hash + (hash >> 5));
+}
+#endif	/* __HAVE_HASH32_STR */
+
+
+#endif	/* !_SYS_HASH_H_ */