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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- | |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2008-2011 New Dream Network | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include "common/debug.h" | |
16 | ||
17 | namespace ceph { | |
18 | static CephContext *g_assert_context = NULL; | |
19 | ||
20 | /* If you register an assert context, assert() will try to lock the dout | |
21 | * stream of that context before starting an assert. This is nice because the | |
22 | * output looks better. Your assert will not be interleaved with other dout | |
23 | * statements. | |
24 | * | |
25 | * However, this is strictly optional and library code currently does not | |
26 | * register an assert context. The extra complexity of supporting this | |
27 | * wouldn't really be worth it. | |
28 | */ | |
29 | void register_assert_context(CephContext *cct) | |
30 | { | |
31 | assert(!g_assert_context); | |
32 | g_assert_context = cct; | |
33 | } | |
34 | ||
35 | void __ceph_assert_fail(const char *assertion, const char *file, int line, | |
36 | const char *func) | |
37 | { | |
38 | ostringstream tss; | |
39 | tss << ceph_clock_now(); | |
40 | ||
41 | char buf[8096]; | |
42 | snprintf(buf, sizeof(buf), | |
43 | "%s: In function '%s' thread %llx time %s\n" | |
44 | "%s: %d: FAILED assert(%s)\n", | |
45 | file, func, (unsigned long long)pthread_self(), tss.str().c_str(), | |
46 | file, line, assertion); | |
47 | dout_emergency(buf); | |
48 | ||
49 | // TODO: get rid of this memory allocation. | |
50 | ostringstream oss; | |
51 | oss << BackTrace(1); | |
52 | dout_emergency(oss.str()); | |
53 | ||
54 | dout_emergency(" NOTE: a copy of the executable, or `objdump -rdS <executable>` " | |
55 | "is needed to interpret this.\n"); | |
56 | ||
57 | if (g_assert_context) { | |
58 | lderr(g_assert_context) << buf << std::endl; | |
59 | *_dout << oss.str(); | |
60 | *_dout << " NOTE: a copy of the executable, or `objdump -rdS <executable>` " | |
61 | << "is needed to interpret this.\n" << dendl; | |
62 | ||
63 | g_assert_context->_log->dump_recent(); | |
64 | } | |
65 | ||
66 | abort(); | |
67 | } | |
68 | ||
69 | void __ceph_assertf_fail(const char *assertion, const char *file, int line, | |
70 | const char *func, const char* msg, ...) | |
71 | { | |
72 | ostringstream tss; | |
73 | tss << ceph_clock_now(); | |
74 | ||
75 | class BufAppender { | |
76 | public: | |
77 | BufAppender(char* buf, int size) : bufptr(buf), remaining(size) { | |
78 | } | |
79 | ||
80 | void printf(const char * format, ...) { | |
81 | va_list args; | |
82 | va_start(args, format); | |
83 | this->vprintf(format, args); | |
84 | va_end(args); | |
85 | } | |
86 | ||
87 | void vprintf(const char * format, va_list args) { | |
88 | int n = vsnprintf(bufptr, remaining, format, args); | |
89 | if (n >= 0) { | |
90 | if (n < remaining) { | |
91 | remaining -= n; | |
92 | bufptr += n; | |
93 | } else { | |
94 | remaining = 0; | |
95 | } | |
96 | } | |
97 | } | |
98 | ||
99 | private: | |
100 | char* bufptr; | |
101 | int remaining; | |
102 | }; | |
103 | ||
104 | char buf[8096]; | |
105 | BufAppender ba(buf, sizeof(buf)); | |
106 | BackTrace *bt = new BackTrace(1); | |
107 | ba.printf("%s: In function '%s' thread %llx time %s\n" | |
108 | "%s: %d: FAILED assert(%s)\n", | |
109 | file, func, (unsigned long long)pthread_self(), tss.str().c_str(), | |
110 | file, line, assertion); | |
111 | ba.printf("Assertion details: "); | |
112 | va_list args; | |
113 | va_start(args, msg); | |
114 | ba.vprintf(msg, args); | |
115 | va_end(args); | |
116 | ba.printf("\n"); | |
117 | dout_emergency(buf); | |
118 | ||
119 | // TODO: get rid of this memory allocation. | |
120 | ostringstream oss; | |
121 | oss << *bt; | |
122 | dout_emergency(oss.str()); | |
123 | ||
124 | dout_emergency(" NOTE: a copy of the executable, or `objdump -rdS <executable>` " | |
125 | "is needed to interpret this.\n"); | |
126 | ||
127 | if (g_assert_context) { | |
128 | lderr(g_assert_context) << buf << std::endl; | |
129 | *_dout << oss.str(); | |
130 | *_dout << " NOTE: a copy of the executable, or `objdump -rdS <executable>` " | |
131 | << "is needed to interpret this.\n" << dendl; | |
132 | ||
133 | g_assert_context->_log->dump_recent(); | |
134 | } | |
135 | ||
136 | abort(); | |
137 | } | |
138 | ||
139 | void __ceph_assert_warn(const char *assertion, const char *file, | |
140 | int line, const char *func) | |
141 | { | |
142 | char buf[8096]; | |
143 | snprintf(buf, sizeof(buf), | |
144 | "WARNING: assert(%s) at: %s: %d: %s()\n", | |
145 | assertion, file, line, func); | |
146 | dout_emergency(buf); | |
147 | } | |
148 | } |