contrib/bind-9.2.4rc7/lib/bind/isc/assertions.c

   1 /*
   2  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (c) 1997,1999 by Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and 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
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  15  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #if !defined(LINT) && !defined(CODECENTER)
  19 static const char rcsid[] = "$Id: assertions.c,v 1.1.2.1 2004/03/09 09:17:34 marka Exp $";
  20 #endif
  21
  22 #include "port_before.h"
  23
  24 #include <errno.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include <isc/assertions.h>
  30
  31 #include "port_after.h"
  32
  33 /*
  34  * Forward.
  35  */
  36
  37 static void default_assertion_failed(const char *, int, assertion_type,
  38                                      const char *, int);
  39
  40 /*
  41  * Public.
  42  */
  43
  44 assertion_failure_callback __assertion_failed = default_assertion_failed;
  45
  46 void
  47 set_assertion_failure_callback(assertion_failure_callback f) {
  48         if (f == NULL)
  49                 __assertion_failed = default_assertion_failed;
  50         else
  51                 __assertion_failed = f;
  52 }
  53
  54 const char *
  55 assertion_type_to_text(assertion_type type) {
  56         const char *result;
  57
  58         switch (type) {
  59         case assert_require:
  60                 result = "REQUIRE";
  61                 break;
  62         case assert_ensure:
  63                 result = "ENSURE";
  64                 break;
  65         case assert_insist:
  66                 result = "INSIST";
  67                 break;
  68         case assert_invariant:
  69                 result = "INVARIANT";
  70                 break;
  71         default:
  72                 result = NULL;
  73         }
  74         return (result);
  75 }
  76
  77 /*
  78  * Private.
  79  */
  80
  81 static void
  82 default_assertion_failed(const char *file, int line, assertion_type type,
  83                          const char *cond, int print_errno)
  84 {
  85         fprintf(stderr, "%s:%d: %s(%s)%s%s failed.\n",
  86                 file, line, assertion_type_to_text(type), cond,
  87                 (print_errno) ? ": " : "",
  88                 (print_errno) ? strerror(errno) : "");
  89         abort();
  90         /* NOTREACHED */
  91 }