* (c) Copyright 2009, Schooner Information Technology, Inc.
* http://www.schoonerinfotech.com/
*
+ * Rewrite of stack dump:
+ * Copyright (C) 2009 Sun Microsystems
+ * Author Trond Norbye
*/
+
+#include "config.h"
+
#include <memory.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
-#include <ucontext.h>
-#include <dlfcn.h>
-#include <execinfo.h>
#include <pthread.h>
#include "ms_memslap.h"
#include "ms_setting.h"
-#define NO_CPP_DEMANGLE
-#ifndef NO_CPP_DEMANGLE
-#include <cxxabi.h>
-#endif
-
-#undef REG_RIP
-
-#if defined(REG_RIP)
- #define SIGSEGV_STACK_IA64
- #define REGFORMAT "%016lx"
-#elif defined(REG_EIP)
- #define SIGSEGV_STACK_X86
- #define REGFORMAT "%08x"
-#else
- #define SIGSEGV_STACK_GENERIC
- #define REGFORMAT "%x"
-#endif
-
/* prototypes */
int ms_setup_sigsegv(void);
int ms_setup_sigpipe(void);
int ms_setup_sigint(void);
-/* signal seg reaches, this function will run */
-static void ms_signal_segv(int signum, siginfo_t * info, void * ptr) {
- int i;
-
- UNUSED_ARGUMENT(signum);
- UNUSED_ARGUMENT(info);
- UNUSED_ARGUMENT(ptr);
-
- pthread_mutex_lock(&ms_global.quit_mutex);
- fprintf(stderr, "Segmentation fault occurred.\n");
-
-#if defined(SIGSEGV_STACK_X86) || defined(SIGSEGV_STACK_IA64)
- int f = 0;
- Dl_info dlinfo;
- void **bp = 0;
- void *ip = 0;
-#else
- void *bt[20];
- char **strings;
- int sz;
-#endif
-
-#if defined(SIGSEGV_STACK_X86) || defined(SIGSEGV_STACK_IA64)
-#if defined(SIGSEGV_STACK_IA64)
- ip = (void*)ucontext->uc_mcontext.gregs[REG_RIP];
- bp = (void**)ucontext->uc_mcontext.gregs[REG_RBP];
-#elif defined(SIGSEGV_STACK_X86)
- ip = (void*)ucontext->uc_mcontext.gregs[REG_EIP];
- bp = (void**)ucontext->uc_mcontext.gregs[REG_EBP];
-#endif
-
- fprintf(stderr, "Stack trace:\n");
- while(bp && ip) {
- if(!dladdr(ip, &dlinfo))
- break;
-
- const char *symname = dlinfo.dli_sname;
-#ifndef NO_CPP_DEMANGLE
- int status;
- char *tmp = __cxa_demangle(symname, NULL, 0, &status);
-
- if(status == 0 && tmp)
- symname = tmp;
-#endif
-
- fprintf(stderr, "% 2d: %p <%s+%u> (%s)\n",
- ++f,
- ip,
- symname,
- (unsigned)(ip - dlinfo.dli_saddr),
- dlinfo.dli_fname);
-#ifndef NO_CPP_DEMANGLE
- if(tmp)
- free(tmp);
-#endif
-
- if(dlinfo.dli_sname && !strcmp(dlinfo.dli_sname, "main"))
- break;
-
- ip = bp[1];
- bp = (void**)bp[0];
- }
-#else
- fprintf(stderr, "Stack trace:\n");
- sz = backtrace(bt, 20);
- strings = backtrace_symbols(bt, sz);
-
- for(i = 0; i < sz; ++i)
- fprintf(stderr, "%s\n", strings[i]);
-#endif
- fprintf(stderr, "End of stack trace\n");
- pthread_mutex_unlock(&ms_global.quit_mutex);
- exit (1);
-}
-
-/* signal pipe reaches, this function will run */
-static void ms_signal_pipe(int signum, siginfo_t* info, void*ptr)
+/* signal seg reaches, this function will run */
+static void ms_signal_segv(int signum, siginfo_t *info, void *ptr)
{
- UNUSED_ARGUMENT(signum);
- UNUSED_ARGUMENT(info);
- UNUSED_ARGUMENT(ptr);
-
- pthread_mutex_lock(&ms_global.quit_mutex);
- fprintf(stderr, "\tMemslap encountered a server error. Quitting...\n");
- fprintf(stderr, "\tError info: SIGPIPE captured (from write?)\n");
- fprintf(stderr, "\tProbably a socket I/O error when the server is down.\n");
- pthread_mutex_unlock(&ms_global.quit_mutex);
- exit(1);
+ UNUSED_ARGUMENT(signum);
+ UNUSED_ARGUMENT(info);
+ UNUSED_ARGUMENT(ptr);
+
+ pthread_mutex_lock(&ms_global.quit_mutex);
+ fprintf(stderr, "Segmentation fault occurred.\nStack trace:\n");
+ pandora_print_callstack(stderr);
+ fprintf(stderr, "End of stack trace\n");
+ pthread_mutex_unlock(&ms_global.quit_mutex);
+ abort();
}
/* signal int reaches, this function will run */
-static void ms_signal_int(int signum, siginfo_t* info, void*ptr)
+static void ms_signal_int(int signum, siginfo_t *info, void *ptr)
{
- UNUSED_ARGUMENT(signum);
- UNUSED_ARGUMENT(info);
- UNUSED_ARGUMENT(ptr);
-
- pthread_mutex_lock(&ms_global.quit_mutex);
- fprintf(stderr, "SIGINT handled.\n");
- pthread_mutex_unlock(&ms_global.quit_mutex);
- exit(1);
-}
+ UNUSED_ARGUMENT(signum);
+ UNUSED_ARGUMENT(info);
+ UNUSED_ARGUMENT(ptr);
+
+ pthread_mutex_lock(&ms_global.quit_mutex);
+ fprintf(stderr, "SIGINT handled.\n");
+ pthread_mutex_unlock(&ms_global.quit_mutex);
+ exit(1);
+} /* ms_signal_int */
+
/**
* redirect signal seg
*
- * @return if success, return 0, else return -1
+ * @return if success, return EXIT_SUCCESS, else return -1
*/
-int ms_setup_sigsegv(void) {
- struct sigaction action;
- memset(&action, 0, sizeof(action));
- action.sa_sigaction = ms_signal_segv;
- action.sa_flags = SA_SIGINFO;
- if(sigaction(SIGSEGV, &action, NULL) < 0) {
- perror("sigaction");
- return 0;
- }
-
- return -1;
-}
+int ms_setup_sigsegv(void)
+{
+ struct sigaction action;
+
+ memset(&action, 0, sizeof(action));
+ action.sa_sigaction= ms_signal_segv;
+ action.sa_flags= SA_SIGINFO;
+ if (sigaction(SIGSEGV, &action, NULL) < 0)
+ {
+ perror("sigaction");
+ return EXIT_SUCCESS;
+ }
+
+ return -1;
+} /* ms_setup_sigsegv */
+
/**
* redirect signal pipe
*
- * @return if success, return 0, else return -1
+ * @return if success, return EXIT_SUCCESS, else return -1
*/
int ms_setup_sigpipe(void)
{
- struct sigaction action_2;
- memset(&action_2, 0, sizeof(action_2));
- action_2.sa_sigaction = ms_signal_pipe;
- action_2.sa_flags = SA_SIGINFO;
- if(sigaction(SIGPIPE, &action_2, NULL) < 0) {
- perror("sigaction");
- return 0;
- }
-
- return -1;
-}
+ /* ignore the SIGPIPE signal */
+ signal(SIGPIPE, SIG_IGN);
+
+ return -1;
+} /* ms_setup_sigpipe */
+
/**
* redirect signal int
*
- * @return if success, return 0, else return -1
+ * @return if success, return EXIT_SUCCESS, else return -1
*/
int ms_setup_sigint(void)
{
- struct sigaction action_3;
- memset(&action_3, 0, sizeof(action_3));
- action_3.sa_sigaction = ms_signal_int;
- action_3.sa_flags = SA_SIGINFO;
- if(sigaction(SIGINT, &action_3, NULL) < 0) {
- perror("sigaction");
- return 0;
- }
-
- return -1;
-}
+ struct sigaction action_3;
+
+ memset(&action_3, 0, sizeof(action_3));
+ action_3.sa_sigaction= ms_signal_int;
+ action_3.sa_flags= SA_SIGINFO;
+ if (sigaction(SIGINT, &action_3, NULL) < 0)
+ {
+ perror("sigaction");
+ return EXIT_SUCCESS;
+ }
+
+ return -1;
+} /* ms_setup_sigint */
+
#ifndef SIGSEGV_NO_AUTO_INIT
-static void __attribute((constructor)) ms_init(void) {
- ms_setup_sigsegv();
- ms_setup_sigpipe();
- ms_setup_sigint();
+static void __attribute((constructor)) ms_init(void)
+{
+ ms_setup_sigsegv();
+ ms_setup_sigpipe();
+ ms_setup_sigint();
}
#endif
projects / m6w6 / libmemcached / blobdiff