1 /*
2 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001 Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 /* $Id: bufferlist.c,v 1.17 2007/06/19 23:47:17 tbox Exp $ */
19
20 /*! \file */
21
22 #include <config.h>
23
24 #include <stddef.h>
25
26 #include <isc/buffer.h>
27 #include <isc/bufferlist.h>
28 #include <isc/util.h>
29
30 unsigned int
isc_bufferlist_usedcount(isc_bufferlist_t * bl)31 isc_bufferlist_usedcount(isc_bufferlist_t *bl) {
32 isc_buffer_t *buffer;
33 unsigned int length;
34
35 REQUIRE(bl != NULL);
36
37 length = 0;
38 buffer = ISC_LIST_HEAD(*bl);
39 while (buffer != NULL) {
40 REQUIRE(ISC_BUFFER_VALID(buffer));
41 length += isc_buffer_usedlength(buffer);
42 buffer = ISC_LIST_NEXT(buffer, link);
43 }
44
45 return (length);
46 }
47
48 unsigned int
isc_bufferlist_availablecount(isc_bufferlist_t * bl)49 isc_bufferlist_availablecount(isc_bufferlist_t *bl) {
50 isc_buffer_t *buffer;
51 unsigned int length;
52
53 REQUIRE(bl != NULL);
54
55 length = 0;
56 buffer = ISC_LIST_HEAD(*bl);
57 while (buffer != NULL) {
58 REQUIRE(ISC_BUFFER_VALID(buffer));
59 length += isc_buffer_availablelength(buffer);
60 buffer = ISC_LIST_NEXT(buffer, link);
61 }
62
63 return (length);
64 }
65