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Annotation of embedaddon/ntp/lib/isc/bufferlist.c, revision 1.1.1.1

1.1       misho       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
                     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
                     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: }