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3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero
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--- old/usr/src/uts/common/sys/debug.h
+++ new/usr/src/uts/common/sys/debug.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
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16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 */
25 25
26 +/*
27 + * Copyright (c) 2012 by Delphix. All rights reserved.
28 + */
29 +
26 30 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 31 /* All Rights Reserved */
28 32
29 33 #ifndef _SYS_DEBUG_H
30 34 #define _SYS_DEBUG_H
31 35
32 36 #include <sys/isa_defs.h>
33 37 #include <sys/types.h>
34 38 #include <sys/note.h>
35 39
36 40 #ifdef __cplusplus
37 41 extern "C" {
38 42 #endif
39 43
40 44 /*
41 45 * ASSERT(ex) causes a panic or debugger entry if expression ex is not
42 46 * true. ASSERT() is included only for debugging, and is a no-op in
43 47 * production kernels. VERIFY(ex), on the other hand, behaves like
44 48 * ASSERT and is evaluated on both debug and non-debug kernels.
45 49 */
46 50
47 51 #if defined(__STDC__)
48 52 extern int assfail(const char *, const char *, int);
49 53 #define VERIFY(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
50 54 #if DEBUG
51 55 #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
52 56 #else
53 57 #define ASSERT(x) ((void)0)
54 58 #endif
55 59 #else /* defined(__STDC__) */
56 60 extern int assfail();
57 61 #define VERIFY(EX) ((void)((EX) || assfail("EX", __FILE__, __LINE__)))
58 62 #if DEBUG
59 63 #define ASSERT(EX) ((void)((EX) || assfail("EX", __FILE__, __LINE__)))
60 64 #else
61 65 #define ASSERT(x) ((void)0)
62 66 #endif
63 67 #endif /* defined(__STDC__) */
64 68
65 69 /*
66 70 * Assertion variants sensitive to the compilation data model
67 71 */
68 72 #if defined(_LP64)
69 73 #define ASSERT64(x) ASSERT(x)
70 74 #define ASSERT32(x)
71 75 #else
72 76 #define ASSERT64(x)
73 77 #define ASSERT32(x) ASSERT(x)
74 78 #endif
75 79
76 80 /*
77 81 * IMPLY and EQUIV are assertions of the form:
78 82 *
79 83 * if (a) then (b)
80 84 * and
81 85 * if (a) then (b) *AND* if (b) then (a)
82 86 */
83 87 #if DEBUG
84 88 #define IMPLY(A, B) \
85 89 ((void)(((!(A)) || (B)) || \
86 90 assfail("(" #A ") implies (" #B ")", __FILE__, __LINE__)))
87 91 #define EQUIV(A, B) \
88 92 ((void)((!!(A) == !!(B)) || \
89 93 assfail("(" #A ") is equivalent to (" #B ")", __FILE__, __LINE__)))
90 94 #else
91 95 #define IMPLY(A, B) ((void)0)
92 96 #define EQUIV(A, B) ((void)0)
93 97 #endif
94 98
95 99 /*
96 100 * ASSERT3() behaves like ASSERT() except that it is an explicit conditional,
97 101 * and prints out the values of the left and right hand expressions as part of
98 102 * the panic message to ease debugging. The three variants imply the type
99 103 * of their arguments. ASSERT3S() is for signed data types, ASSERT3U() is
100 104 * for unsigned, and ASSERT3P() is for pointers. The VERIFY3*() macros
101 105 * have the same relationship as above.
102 106 */
103 107 extern void assfail3(const char *, uintmax_t, const char *, uintmax_t,
104 108 const char *, int);
105 109 #define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
106 110 const TYPE __left = (TYPE)(LEFT); \
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107 111 const TYPE __right = (TYPE)(RIGHT); \
108 112 if (!(__left OP __right)) \
109 113 assfail3(#LEFT " " #OP " " #RIGHT, \
110 114 (uintmax_t)__left, #OP, (uintmax_t)__right, \
111 115 __FILE__, __LINE__); \
112 116 _NOTE(CONSTCOND) } while (0)
113 117
114 118 #define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
115 119 #define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
116 120 #define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
121 +#define VERIFY0(x) VERIFY3_IMPL(x, ==, 0, uintmax_t)
122 +
117 123 #if DEBUG
118 124 #define ASSERT3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
119 125 #define ASSERT3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
120 126 #define ASSERT3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
127 +#define ASSERT0(x) VERIFY3_IMPL(x, ==, 0, uintmax_t)
121 128 #else
122 129 #define ASSERT3S(x, y, z) ((void)0)
123 130 #define ASSERT3U(x, y, z) ((void)0)
124 131 #define ASSERT3P(x, y, z) ((void)0)
132 +#define ASSERT0(x) ((void)0)
125 133 #endif
126 134
127 135 #ifdef _KERNEL
128 136
129 137 extern void abort_sequence_enter(char *);
130 138 extern void debug_enter(char *);
131 139
132 140 #endif /* _KERNEL */
133 141
134 142 #if defined(DEBUG) && !defined(__sun)
135 143 /* CSTYLED */
136 144 #define STATIC
137 145 #else
138 146 /* CSTYLED */
139 147 #define STATIC static
140 148 #endif
141 149
142 150 #ifdef __cplusplus
143 151 }
144 152 #endif
145 153
146 154 #endif /* _SYS_DEBUG_H */
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