Print this page
Reworking of L2ARC persistency to simplify design.
| Split |
Close |
| Expand all |
| Collapse all |
--- 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
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
|
↓ open down ↓ |
17 lines elided |
↑ open up ↑ |
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 26 /*
27 27 * Copyright (c) 2012 by Delphix. All rights reserved.
28 + * Copyright 2013 Saso Kiselkov. All rights reserved.
28 29 */
29 30
30 31 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
31 32 /* All Rights Reserved */
32 33
33 34 #ifndef _SYS_DEBUG_H
34 35 #define _SYS_DEBUG_H
35 36
36 37 #include <sys/isa_defs.h>
37 38 #include <sys/types.h>
38 39 #include <sys/note.h>
39 40
40 41 #ifdef __cplusplus
41 42 extern "C" {
42 43 #endif
43 44
44 45 /*
45 46 * ASSERT(ex) causes a panic or debugger entry if expression ex is not
46 47 * true. ASSERT() is included only for debugging, and is a no-op in
47 48 * production kernels. VERIFY(ex), on the other hand, behaves like
48 49 * ASSERT and is evaluated on both debug and non-debug kernels.
49 50 */
50 51
51 52 #if defined(__STDC__)
52 53 extern int assfail(const char *, const char *, int);
53 54 #define VERIFY(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
54 55 #if DEBUG
55 56 #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
56 57 #else
57 58 #define ASSERT(x) ((void)0)
58 59 #endif
59 60 #else /* defined(__STDC__) */
60 61 extern int assfail();
61 62 #define VERIFY(EX) ((void)((EX) || assfail("EX", __FILE__, __LINE__)))
62 63 #if DEBUG
63 64 #define ASSERT(EX) ((void)((EX) || assfail("EX", __FILE__, __LINE__)))
64 65 #else
65 66 #define ASSERT(x) ((void)0)
66 67 #endif
67 68 #endif /* defined(__STDC__) */
68 69
69 70 /*
70 71 * Assertion variants sensitive to the compilation data model
71 72 */
72 73 #if defined(_LP64)
73 74 #define ASSERT64(x) ASSERT(x)
74 75 #define ASSERT32(x)
75 76 #else
76 77 #define ASSERT64(x)
77 78 #define ASSERT32(x) ASSERT(x)
78 79 #endif
79 80
80 81 /*
81 82 * IMPLY and EQUIV are assertions of the form:
82 83 *
83 84 * if (a) then (b)
84 85 * and
85 86 * if (a) then (b) *AND* if (b) then (a)
86 87 */
87 88 #if DEBUG
88 89 #define IMPLY(A, B) \
89 90 ((void)(((!(A)) || (B)) || \
90 91 assfail("(" #A ") implies (" #B ")", __FILE__, __LINE__)))
91 92 #define EQUIV(A, B) \
92 93 ((void)((!!(A) == !!(B)) || \
93 94 assfail("(" #A ") is equivalent to (" #B ")", __FILE__, __LINE__)))
94 95 #else
95 96 #define IMPLY(A, B) ((void)0)
96 97 #define EQUIV(A, B) ((void)0)
97 98 #endif
98 99
99 100 /*
100 101 * ASSERT3() behaves like ASSERT() except that it is an explicit conditional,
101 102 * and prints out the values of the left and right hand expressions as part of
102 103 * the panic message to ease debugging. The three variants imply the type
103 104 * of their arguments. ASSERT3S() is for signed data types, ASSERT3U() is
104 105 * for unsigned, and ASSERT3P() is for pointers. The VERIFY3*() macros
105 106 * have the same relationship as above.
106 107 */
107 108 extern void assfail3(const char *, uintmax_t, const char *, uintmax_t,
108 109 const char *, int);
109 110 #define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
110 111 const TYPE __left = (TYPE)(LEFT); \
111 112 const TYPE __right = (TYPE)(RIGHT); \
112 113 if (!(__left OP __right)) \
113 114 assfail3(#LEFT " " #OP " " #RIGHT, \
114 115 (uintmax_t)__left, #OP, (uintmax_t)__right, \
115 116 __FILE__, __LINE__); \
116 117 _NOTE(CONSTCOND) } while (0)
117 118
118 119 #define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
119 120 #define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
120 121 #define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
121 122 #define VERIFY0(x) VERIFY3_IMPL(x, ==, 0, uintmax_t)
122 123
123 124 #if DEBUG
124 125 #define ASSERT3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
|
↓ open down ↓ |
87 lines elided |
↑ open up ↑ |
125 126 #define ASSERT3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
126 127 #define ASSERT3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
127 128 #define ASSERT0(x) VERIFY3_IMPL(x, ==, 0, uintmax_t)
128 129 #else
129 130 #define ASSERT3S(x, y, z) ((void)0)
130 131 #define ASSERT3U(x, y, z) ((void)0)
131 132 #define ASSERT3P(x, y, z) ((void)0)
132 133 #define ASSERT0(x) ((void)0)
133 134 #endif
134 135
136 +/*
137 + * Compile-time assertion. The condition 'x' must be constant.
138 + */
139 +#define CTASSERT(x) _CTASSERT(x, __LINE__)
140 +#define _CTASSERT(x, y) __CTASSERT(x, y)
141 +#define __CTASSERT(x, y) \
142 + typedef char __compile_time_assertion__ ## y [(x) ? 1 : -1]
143 +
135 144 #ifdef _KERNEL
136 145
137 146 extern void abort_sequence_enter(char *);
138 147 extern void debug_enter(char *);
139 148
140 149 #endif /* _KERNEL */
141 150
142 151 #if defined(DEBUG) && !defined(__sun)
143 152 /* CSTYLED */
144 153 #define STATIC
145 154 #else
146 155 /* CSTYLED */
147 156 #define STATIC static
148 157 #endif
149 158
150 159 #ifdef __cplusplus
151 160 }
152 161 #endif
153 162
154 163 #endif /* _SYS_DEBUG_H */
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX