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/*****************************************************************************
Copyright (C) 2013 SkySQL Ab. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
#include "os0thread.h"
#if defined (__linux__) && HAVE_BACKTRACE && HAVE_BACKTRACE_SYMBOLS
#if HAVE_EXECINFO_H
#include <execinfo.h>
#endif
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#ifndef __USE_GNU
#define __USE_GNU
#endif
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE
#endif
/* Since kernel version 2.2 the undocumented parameter to the signal handler has been declared
obsolete in adherence with POSIX.1b. A more correct way to retrieve additional information is
to use the SA_SIGINFO option when setting the handler */
#undef USE_SIGCONTEXT
#ifndef USE_SIGCONTEXT
/* get REG_EIP / REG_RIP from ucontext.h */
#include <ucontext.h>
#ifndef EIP
#define EIP 14
#endif
#if (defined (__x86_64__))
#ifndef REG_RIP
#define REG_RIP REG_INDEX(rip) /* seems to be 16 */
#endif
#endif
#endif
#define OS_STACKTRACE_MAX_DEPTH 128
/***************************************************************//**
Prints stacktrace for this thread.
*/
void
os_stacktrace_print(
/*================*/
int sig_num,
siginfo_t* info,
void* ucontext)
{
void* array[OS_STACKTRACE_MAX_DEPTH];
char** messages;
int size, i;
void* caller_address = NULL;
/* Get the address at the time the signal was raised */
#if defined(__x86_64__)
ucontext_t* uc = (ucontext_t*) ucontext;
caller_address = (void*) uc->uc_mcontext.gregs[REG_RIP] ;
#elif defined(__hppa__)
ucontext_t* uc = (ucontext_t*) ucontext;
caller_address = (void*) (uc->uc_mcontext.sc_iaoq[0] & ~0x3UL) ;
#elif (defined (__ppc__)) || (defined (__powerpc__))
ucontext_t* uc = (ucontext_t*) ucontext;
caller_address = (void*) uc->uc_mcontext.regs->nip ;
#elif defined(__sparc__)
struct sigcontext* sc = (struct sigcontext*) ucontext;
#if __WORDSIZE == 64
caller_address = (void*) sc->sigc_regs.tpc ;
#else
caller_address = (void*) sc->si_regs.pc ;
#endif
#elif defined(__i386__)
ucontext_t* uc = (ucontext_t*) ucontext;
caller_address = (void*) uc->uc_mcontext.gregs[REG_EIP] ;
#else
/* Unsupported return */
return;
#endif
fprintf(stderr, "InnoDB: signal %d (%s), address is %p from %p\n",
sig_num, strsignal(sig_num), info->si_addr,
(void *)caller_address);
size = backtrace(array, OS_STACKTRACE_MAX_DEPTH);
/* overwrite sigaction with caller's address */
array[1] = caller_address;
messages = backtrace_symbols(array, size);
fprintf(stderr,
"InnoDB: Stacktrace for Thread %lu \n",
(ulong) os_thread_pf(os_thread_get_curr_id()));
/* skip first stack frame (points here) */
for (i = 1; i < size && messages != NULL; ++i)
{
fprintf(stderr, "InnoDB: [bt]: (%d) %s\n", i, messages[i]);
}
free(messages);
}
#endif /* __linux__ */
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