Updating for 1.0.2 release
[awesomized/libmemcached] / libmemcached / backtrace.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * libmcachedd client library.
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 */
37
38 #include <libmemcached/common.h>
39
40 #include <cstring>
41 #include <cstdlib>
42
43 #ifdef __GNUC__
44 #ifdef HAVE_BACKTRACE
45 #include <execinfo.h>
46 #include <cxxabi.h>
47 #endif // HAVE_BACKTRACE
48 #endif // __GNUC__
49
50
51 void custom_backtrace(void)
52 {
53 #ifdef __GNUC__
54 #ifdef HAVE_BACKTRACE
55 void *array[50];
56
57 size_t size= backtrace(array, 50);
58 char **strings= backtrace_symbols(array, size);
59
60 fprintf(stderr, "Number of stack frames obtained: %lu\n", (unsigned long)size);
61
62 for (size_t x= 1; x < size; x++)
63 {
64 size_t sz= 200;
65 char *function= (char *)malloc(sz);
66 char *begin= 0;
67 char *end= 0;
68
69 for (char *j = strings[x]; *j; ++j)
70 {
71 if (*j == '(') {
72 begin = j;
73 }
74 else if (*j == '+') {
75 end = j;
76 }
77 }
78 if (begin && end)
79 {
80 begin++;
81 *end= '\0';
82
83 int status;
84 char *ret = abi::__cxa_demangle(begin, function, &sz, &status);
85 if (ret)
86 {
87 function= ret;
88 }
89 else
90 {
91 strncpy(function, begin, sz);
92 strncat(function, "()", sz);
93 function[sz-1] = '\0';
94 }
95 fprintf(stderr, "%s\n", function);
96 }
97 else
98 {
99 fprintf(stderr, "%s\n", strings[x]);
100 }
101 free(function);
102 }
103
104
105 free (strings);
106 #endif // HAVE_BACKTRACE
107 #endif // __GNUC__
108 }