database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

Make it trivial to get stack traces from external programs.

Browse Source 
To get a stacktrace in a program like aria_chk, one only have to do:

#include <my_stacktrace.h>

call my_init_stacktrace(1) in main().
This commit is contained in:
Monty
2019-05-17 16:34:35 +03:00
parent ab38b7511b
commit ebfe8c4e0e
8 changed files with 107 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
mysys/stacktrace.c
View File

@@ -14,12 +14,11 @@
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include <my_global.h>
#include "mysys_priv.h"
#include <my_stacktrace.h>
#ifndef __WIN__
#include <signal.h>
#include <my_pthread.h>
#include <m_string.h>
#ifdef HAVE_STACKTRACE
#include <unistd.h>
@@ -42,11 +41,49 @@ static char *heap_start;
extern char *__bss_start;
#endif
void my_init_stacktrace()
/**
Default handler for printing stacktrace
*/
static sig_handler default_handle_fatal_signal(int sig)
{
my_safe_printf_stderr("%s: Got signal %d. Attempting backtrace\n",
my_progname_short, sig);
my_print_stacktrace(0,0,1);
#ifndef __WIN__
signal(sig, SIG_DFL);
kill(getpid(), sig);
#endif /* __WIN__ */
return;
}
/**
Initialize priting off stacktrace at signal
@param setup_handlers 0 only initialize variables
1 setup signal handlers for stacktrace printing
*/
void my_init_stacktrace(int setup_handlers)
{
#if(defined HAVE_BSS_START) && !(defined __linux__)
heap_start = (char*) &__bss_start;
#endif
if (setup_handlers)
{
struct sigaction sa;
sa.sa_flags = SA_RESETHAND | SA_NODEFER;
sigemptyset(&sa.sa_mask);
sa.sa_handler= default_handle_fatal_signal;
sigaction(SIGSEGV, &sa, NULL);
sigaction(SIGABRT, &sa, NULL);
#ifdef SIGBUS
sigaction(SIGBUS, &sa, NULL);
#endif
sigaction(SIGILL, &sa, NULL);
sigaction(SIGFPE, &sa, NULL);
}
}
#ifdef __linux__
@@ -510,7 +547,7 @@ static EXCEPTION_POINTERS *exception_ptrs;
#define MODULE64_SIZE_WINXP 576
#define STACKWALK_MAX_FRAMES 64
void my_init_stacktrace()
void my_init_stacktrace(int setup_handlers __attribute__((unused)))
{
}