---------------------
PatchSet 10321 
Date: 2007/12/27 12:59:08
Author: adri
Branch: s27_adri
Tag: (none) 
Log:
A couple new buffer functions, useful later on.

Members: 
	libbuf/buf.c:1.1.2.7->1.1.2.8 
	libbuf/buf.h:1.1.2.5->1.1.2.6 

Index: squid/libbuf/buf.c
===================================================================
RCS file: /cvsroot/squid-sf//squid/libbuf/Attic/buf.c,v
retrieving revision 1.1.2.7
retrieving revision 1.1.2.8
diff -u -r1.1.2.7 -r1.1.2.8
--- squid/libbuf/buf.c	20 Dec 2007 10:32:38 -0000	1.1.2.7
+++ squid/libbuf/buf.c	27 Dec 2007 12:59:08 -0000	1.1.2.8
@@ -27,6 +27,7 @@
 		buf_pool = memPoolCreate("buf_t", sizeof(buf_t));
 }
 
+
 static int
 buf_changesize(buf_t *b, int newsize)
 {
@@ -55,6 +56,19 @@
 	return 1;
 }
 
+/*
+ * Grow the buffer to accomodate the given minimum free size.
+ * XXX Ideally we'll want to page size align the eventual allocation.
+ */
+int
+buf_grow_to_min_free(buf_t *b, int minfree)
+{
+	if (buf_remainder(b) >= minfree)
+		return 0;
+	return buf_changesize(b, b->size + minfree);
+}
+
+
 buf_t *
 buf_create(void)
 {
Index: squid/libbuf/buf.h
===================================================================
RCS file: /cvsroot/squid-sf//squid/libbuf/Attic/buf.h,v
retrieving revision 1.1.2.5
retrieving revision 1.1.2.6
diff -u -r1.1.2.5 -r1.1.2.6
--- squid/libbuf/buf.h	19 Dec 2007 03:58:29 -0000	1.1.2.5
+++ squid/libbuf/buf.h	27 Dec 2007 12:59:09 -0000	1.1.2.6
@@ -32,6 +32,8 @@
 extern		int buf_fill(buf_t *buf, int fd, int dogrow);
 extern		int buf_make_immutable(buf_t *buf, int offset);
 extern		int buf_append(buf_t *buf, const void *src, size_t len, buf_flags_t flags);
+extern		int buf_grow_to_min_free(buf_t *b, int minfree);
+
 
 static inline int buf_len(const buf_t *buf) { return buf->len; }
 
@@ -41,6 +43,7 @@
 #define		buf_buf(buf)	((buf)->b)
 #define		buf_len(buf)	((buf)->len)
 #define		buf_refcnt(buf)	((buf)->nref)
+#define		buf_remainder(buf)	( (buf)->size - (buf)->len )
 
 static inline int
 buf_get_chr(const buf_t *buf, int offset) {