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: region.h,v 1.4 2020/02/24 15:09:14 jsg Exp $ */ 18 19 #ifndef ISC_REGION_H 20 #define ISC_REGION_H 1 21 22 /*! \file isc/region.h */ 23 24 #include <isc/types.h> 25 26 struct isc_region { 27 unsigned char * base; 28 unsigned int length; 29 }; 30 31 struct isc_textregion { 32 char * base; 33 unsigned int length; 34 }; 35 36 /*@{*/ 37 /*! 38 * The region structure is not opaque, and is usually directly manipulated. 39 * Some macros are defined below for convenience. 40 */ 41 42 #define isc_region_consume(r,l) \ 43 do { \ 44 isc_region_t *_r = (r); \ 45 unsigned int _l = (l); \ 46 INSIST(_r->length >= _l); \ 47 _r->base += _l; \ 48 _r->length -= _l; \ 49 } while (0) 50 /*@}*/ 51 52 #endif /* ISC_REGION_H */ 53