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1 /*
2  * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
3  * Copyright (C) 1997-2001  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 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 /*
19  * $Id: assertions.h,v 1.18.18.2 2005/04/29 00:16:52 marka Exp $
20  */
21 /*! \file assertions.h
22  */
23
24 #ifndef ISC_ASSERTIONS_H
25 #define ISC_ASSERTIONS_H 1
26
27 #include <isc/lang.h>
28 #include <isc/platform.h>
29
30 ISC_LANG_BEGINDECLS
31
32 /*% isc assertion type */
33 typedef enum {
34         isc_assertiontype_require,
35         isc_assertiontype_ensure,
36         isc_assertiontype_insist,
37         isc_assertiontype_invariant
38 } isc_assertiontype_t;
39
40 typedef void (*isc_assertioncallback_t)(const char *, int, isc_assertiontype_t,
41                                         const char *);
42
43 LIBISC_EXTERNAL_DATA extern isc_assertioncallback_t isc_assertion_failed;
44
45 void
46 isc_assertion_setcallback(isc_assertioncallback_t);
47
48 const char *
49 isc_assertion_typetotext(isc_assertiontype_t type);
50
51 #ifdef ISC_CHECK_ALL
52 #define ISC_CHECK_REQUIRE               1
53 #define ISC_CHECK_ENSURE                1
54 #define ISC_CHECK_INSIST                1
55 #define ISC_CHECK_INVARIANT             1
56 #endif
57
58 #ifdef ISC_CHECK_NONE
59 #define ISC_CHECK_REQUIRE               0
60 #define ISC_CHECK_ENSURE                0
61 #define ISC_CHECK_INSIST                0
62 #define ISC_CHECK_INVARIANT             0
63 #endif
64
65 #ifndef ISC_CHECK_REQUIRE
66 #define ISC_CHECK_REQUIRE               1
67 #endif
68
69 #ifndef ISC_CHECK_ENSURE
70 #define ISC_CHECK_ENSURE                1
71 #endif
72
73 #ifndef ISC_CHECK_INSIST
74 #define ISC_CHECK_INSIST                1
75 #endif
76
77 #ifndef ISC_CHECK_INVARIANT
78 #define ISC_CHECK_INVARIANT             1
79 #endif
80
81 #if ISC_CHECK_REQUIRE != 0
82 #define ISC_REQUIRE(cond) \
83         ((void) ((cond) || \
84                  ((isc_assertion_failed)(__FILE__, __LINE__, \
85                                          isc_assertiontype_require, \
86                                          #cond), 0)))
87 #else
88 #define ISC_REQUIRE(cond)       ((void) 0)
89 #endif /* ISC_CHECK_REQUIRE */
90
91 #if ISC_CHECK_ENSURE != 0
92 #define ISC_ENSURE(cond) \
93         ((void) ((cond) || \
94                  ((isc_assertion_failed)(__FILE__, __LINE__, \
95                                          isc_assertiontype_ensure, \
96                                          #cond), 0)))
97 #else
98 #define ISC_ENSURE(cond)        ((void) 0)
99 #endif /* ISC_CHECK_ENSURE */
100
101 #if ISC_CHECK_INSIST != 0
102 #define ISC_INSIST(cond) \
103         ((void) ((cond) || \
104                  ((isc_assertion_failed)(__FILE__, __LINE__, \
105                                          isc_assertiontype_insist, \
106                                          #cond), 0)))
107 #else
108 #define ISC_INSIST(cond)        ((void) 0)
109 #endif /* ISC_CHECK_INSIST */
110
111 #if ISC_CHECK_INVARIANT != 0
112 #define ISC_INVARIANT(cond) \
113         ((void) ((cond) || \
114                  ((isc_assertion_failed)(__FILE__, __LINE__, \
115                                          isc_assertiontype_invariant, \
116                                          #cond), 0)))
117 #else
118 #define ISC_INVARIANT(cond)     ((void) 0)
119 #endif /* ISC_CHECK_INVARIANT */
120
121 ISC_LANG_ENDDECLS
122
123 #endif /* ISC_ASSERTIONS_H */