Fix bad if path
[m6w6/libmemcached] / libtest / backtrace_test.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Data Differential YATL (i.e. libtest) library
4 *
5 * Copyright (C) 2012 Data Differential, http://datadifferential.com/
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above
15 * copyright notice, this list of conditions and the following disclaimer
16 * in the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * * The names of its contributors may not be used to endorse or
20 * promote products derived from this software without specific prior
21 * written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 */
36
37 #include <cerrno>
38 #include <csignal>
39 #include <cstdio>
40 #include <cstdlib>
41 #include <cstring>
42 #include <iostream>
43
44 #include "libmemcached/backtrace.hpp"
45
46 class Test {
47 public:
48 Test()
49 {
50 }
51
52 void call_backtrace()
53 {
54 std::cerr << __func__ << std::endl;
55 custom_backtrace();
56 }
57 };
58
59 void SIGSEGV_handler(int sig_num, siginfo_t* info, void* ucontext)
60 {
61 std::cerr << __func__ << std::endl;
62 (void)sig_num;
63 (void)info;
64 (void)ucontext;
65
66 custom_backtrace();
67 }
68
69 int raise_SIGSEGV()
70 {
71 std::cerr << std::endl << "Calling backtrace()" << std::endl;
72 custom_backtrace();
73 std::cerr << std::endl << "Calling raise()" << std::endl;
74 return raise(SIGSEGV);
75 }
76
77 int layer4()
78 {
79 return raise_SIGSEGV();
80 }
81
82 int layer3()
83 {
84 return layer4();
85 }
86
87 int layer2()
88 {
89 return layer3();
90 }
91
92 int layer1()
93 {
94 return layer2();
95 }
96
97 int main(int, char **)
98 {
99 Test t;
100
101 t.call_backtrace();
102
103 struct sigaction sigact;
104
105 sigact.sa_sigaction= SIGSEGV_handler;
106 sigact.sa_flags= SA_RESTART | SA_SIGINFO;
107
108 if (sigaction(SIGSEGV, &sigact, (struct sigaction *)NULL) != 0)
109 {
110 std::cerr << "error setting signal handler for " << strsignal(SIGSEGV) << "(" << SIGSEGV << ")" << std::endl;
111
112 exit(EXIT_FAILURE);
113 }
114
115 int ret= layer1();
116 if (ret)
117 {
118 std::cerr << "raise() " << strerror(errno) << std::endl;
119 exit(EXIT_FAILURE);
120 }
121
122 exit(EXIT_SUCCESS);
123 }