1 /*
2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
14 * PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 /* $Id: bufferlist.c,v 1.3 2020/02/25 05:00:43 jsg Exp $ */
18
19 /*! \file */
20
21 #include <stddef.h>
22
23 #include <isc/buffer.h>
24 #include <isc/bufferlist.h>
25 #include <isc/util.h>
26
27 unsigned int
isc_bufferlist_usedcount(isc_bufferlist_t * bl)28 isc_bufferlist_usedcount(isc_bufferlist_t *bl) {
29 isc_buffer_t *buffer;
30 unsigned int length;
31
32 REQUIRE(bl != NULL);
33
34 length = 0;
35 buffer = ISC_LIST_HEAD(*bl);
36 while (buffer != NULL) {
37 length += isc_buffer_usedlength(buffer);
38 buffer = ISC_LIST_NEXT(buffer, link);
39 }
40
41 return (length);
42 }
43
44 unsigned int
isc_bufferlist_availablecount(isc_bufferlist_t * bl)45 isc_bufferlist_availablecount(isc_bufferlist_t *bl) {
46 isc_buffer_t *buffer;
47 unsigned int length;
48
49 REQUIRE(bl != NULL);
50
51 length = 0;
52 buffer = ISC_LIST_HEAD(*bl);
53 while (buffer != NULL) {
54 length += isc_buffer_availablelength(buffer);
55 buffer = ISC_LIST_NEXT(buffer, link);
56 }
57
58 return (length);
59 }
60