Merge trunk
[awesomized/libmemcached] / clients / ms_sigsegv.c
1 /*
2 * File: ms_sigsegv.c
3 * Author: Mingqiang Zhuang
4 *
5 * Created on March 15, 2009
6 *
7 * (c) Copyright 2009, Schooner Information Technology, Inc.
8 * http://www.schoonerinfotech.com/
9 *
10 * Rewrite of stack dump:
11 * Copyright (C) 2009 Sun Microsystems
12 * Author Trond Norbye
13 */
14
15 #include "config.h"
16
17 #include <memory.h>
18 #include <stdlib.h>
19 #include <stdio.h>
20 #include <signal.h>
21 #include <pthread.h>
22
23 #include "ms_memslap.h"
24 #include "ms_setting.h"
25
26 /* prototypes */
27 int ms_setup_sigsegv(void);
28 int ms_setup_sigpipe(void);
29 int ms_setup_sigint(void);
30
31
32 /* signal seg reaches, this function will run */
33 static void ms_signal_segv(int signum, siginfo_t *info, void *ptr)
34 {
35 UNUSED_ARGUMENT(signum);
36 UNUSED_ARGUMENT(info);
37 UNUSED_ARGUMENT(ptr);
38
39 pthread_mutex_lock(&ms_global.quit_mutex);
40 fprintf(stderr, "Segmentation fault occurred.\nStack trace:\n");
41 pandora_print_callstack(stderr);
42 fprintf(stderr, "End of stack trace\n");
43 pthread_mutex_unlock(&ms_global.quit_mutex);
44 abort();
45 }
46
47 /* signal int reaches, this function will run */
48 static void ms_signal_int(int signum, siginfo_t *info, void *ptr)
49 {
50 UNUSED_ARGUMENT(signum);
51 UNUSED_ARGUMENT(info);
52 UNUSED_ARGUMENT(ptr);
53
54 pthread_mutex_lock(&ms_global.quit_mutex);
55 fprintf(stderr, "SIGINT handled.\n");
56 pthread_mutex_unlock(&ms_global.quit_mutex);
57 exit(1);
58 } /* ms_signal_int */
59
60
61 /**
62 * redirect signal seg
63 *
64 * @return if success, return EXIT_SUCCESS, else return -1
65 */
66 int ms_setup_sigsegv(void)
67 {
68 struct sigaction action;
69
70 memset(&action, 0, sizeof(action));
71 action.sa_sigaction= ms_signal_segv;
72 action.sa_flags= SA_SIGINFO;
73 if (sigaction(SIGSEGV, &action, NULL) < 0)
74 {
75 perror("sigaction");
76 return EXIT_SUCCESS;
77 }
78
79 return -1;
80 } /* ms_setup_sigsegv */
81
82
83 /**
84 * redirect signal pipe
85 *
86 * @return if success, return EXIT_SUCCESS, else return -1
87 */
88 int ms_setup_sigpipe(void)
89 {
90 /* ignore the SIGPIPE signal */
91 signal(SIGPIPE, SIG_IGN);
92
93 return -1;
94 } /* ms_setup_sigpipe */
95
96
97 /**
98 * redirect signal int
99 *
100 * @return if success, return EXIT_SUCCESS, else return -1
101 */
102 int ms_setup_sigint(void)
103 {
104 struct sigaction action_3;
105
106 memset(&action_3, 0, sizeof(action_3));
107 action_3.sa_sigaction= ms_signal_int;
108 action_3.sa_flags= SA_SIGINFO;
109 if (sigaction(SIGINT, &action_3, NULL) < 0)
110 {
111 perror("sigaction");
112 return EXIT_SUCCESS;
113 }
114
115 return -1;
116 } /* ms_setup_sigint */
117
118
119 #ifndef SIGSEGV_NO_AUTO_INIT
120 static void __attribute((constructor)) ms_init(void)
121 {
122 ms_setup_sigsegv();
123 ms_setup_sigpipe();
124 ms_setup_sigint();
125 }
126 #endif