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assertions.c revision 1.1.1.3 
      1 /*	$NetBSD: assertions.c,v 1.1.1.3 2007/03/30 20:16:19 ghen Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
      5  * Copyright (c) 1997,1999 by Internet Software Consortium.
      6  *
      7  * Permission to use, copy, modify, and distribute this software for any
      8  * purpose with or without fee is hereby granted, provided that the above
      9  * copyright notice and this permission notice appear in all copies.
     10  *
     11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
     12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     13  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
     14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
     17  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     18  */
     19 
     20 #if !defined(LINT) && !defined(CODECENTER)
     21 static const char rcsid[] = "Id: assertions.c,v 1.2.18.1 2005/04/27 05:01:05 sra Exp";
     22 #endif
     23 
     24 #include "port_before.h"
     25 
     26 #include <errno.h>
     27 #include <stdio.h>
     28 #include <stdlib.h>
     29 #include <string.h>
     30 
     31 #include <isc/assertions.h>
     32 
     33 #include "port_after.h"
     34 
     35 /*
     36  * Forward.
     37  */
     38 
     39 static void default_assertion_failed(const char *, int, assertion_type,
     40 				     const char *, int);
     41 
     42 /*
     43  * Public.
     44  */
     45 
     46 assertion_failure_callback __assertion_failed = default_assertion_failed;
     47 
     48 void
     49 set_assertion_failure_callback(assertion_failure_callback f) {
     50 	if (f == NULL)
     51 		__assertion_failed = default_assertion_failed;
     52 	else
     53 		__assertion_failed = f;
     54 }
     55 
     56 const char *
     57 assertion_type_to_text(assertion_type type) {
     58 	const char *result;
     59 
     60 	switch (type) {
     61 	case assert_require:
     62 		result = "REQUIRE";
     63 		break;
     64 	case assert_ensure:
     65 		result = "ENSURE";
     66 		break;
     67 	case assert_insist:
     68 		result = "INSIST";
     69 		break;
     70 	case assert_invariant:
     71 		result = "INVARIANT";
     72 		break;
     73 	default:
     74 		result = NULL;
     75 	}
     76 	return (result);
     77 }
     78 
     79 /*
     80  * Private.
     81  */
     82 
     83 static void
     84 default_assertion_failed(const char *file, int line, assertion_type type,
     85 			 const char *cond, int print_errno)
     86 {
     87 	fprintf(stderr, "%s:%d: %s(%s)%s%s failed.\n",
     88 		file, line, assertion_type_to_text(type), cond,
     89 		(print_errno) ? ": " : "",
     90 		(print_errno) ? strerror(errno) : "");
     91 	abort();
     92 	/* NOTREACHED */
     93 }
     94 
     95 /*! \file */
     96