nfo->si_codes[si_code]);
fprintf(stderr, "info->si_addr = %p\n", info->si_addr);
for(i = 0; i < NGREG; i++)
fprintf(stderr, "reg[%02d] = 0x" REGFORMAT "\n", i, ucontext->uc_mcontext.gregs[i]);
#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 (non-dedicated):\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");
exit (-1);
}
int setup_sigsegv() {
struct sigaction action;
memset(&action, 0, sizeof(action));
action.sa_sigaction = signal_segv;
action.sa_flags = SA_SIGINFO;
if(sigaction(SIGSEGV, &action, NULL) < 0) {
perror("sigaction");
return 0;
}
return 1;
}
#ifndef SIGSEGV_NO_AUTO_INIT
static void __attribute((constructor)) init(void)
{
setup_sigsegv();
}
#endif
/*sigsegv.h*/
#ifndef __sigsegv_h__
#define __sigsegv_h__
#ifdef __cplusplus
extern "C" {
#endif
int setup_sigsegv();
#ifdef __cplusplus
}
#endif
#endif /* __sigsegv_h__ */
编译时需要加入-rdynamic -ldl –ggdb
void
handle_signal_error(int rec_signal,siginfo_t* signal_info,void* context)
{
NE_Info* __attribute__ ((unused)) ne_info = NULL;
struct sigaction action;
FILE* file;
void* backtr[NUMBER_OF_BACKTRACE];
cpal_uns32 __attribute__ ((unused)) i = 0;
cpal_uns32 backtr_size = 0;
ucontext_t *u_context;
time_t seconds_time;
struct tm* time_struct;
cpal_si32 ret_t;
char filename[SIZE_OF_FILENAME];
if(g_handler_running)
return;
g_handler_running = CPAL_TRUE;
ret_t = time(&seconds_time);
if(ret_t != - 1)
{
time_struct = gmtime(&seconds_time);
snprintf(filename,SIZE_OF_FILENAME,"%s%d%d%d-%d%d%d-%s",BACKTRACE_FILE_PATH,time_struct->tm_mon,time_struct->tm_mday,
(time_struct->tm_year-100)+2000,time_struct->tm_hour,time_struct->tm_min,time_struct->tm_sec,BACKTRACE_FILE);
}
else
{
snprintf(filename,SIZE_OF_FILENAME,"%s",BACKTRACE_FILE);
}
file = fopen(filename,"w");
if(file == NULL)
{
return;
}
if(signal_info == NULL)
{
return;
}
if(context == NULL)
{
return;
}
u_context = (ucontext_t*)context;
/*Restore the default action for this signal and re-raise it, so that the default action occurs. */
action.sa_sigaction = SIG_DFL;
sigemptyset(&action.sa