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--core-file ; To get a core on SIGSEGV when using Linuxthreads

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Docs/manual.texi:
  Documentation for --core-file
sql/mysql_priv.h:
  --core-file
sql/mysqld.cc:
  --core-file
This commit is contained in:
unknown
2000-08-30 06:05:12 +03:00
parent 45e355c2be
commit a6ec1f09b0
3 changed files with 56 additions and 10 deletions
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43
sql/mysqld.cc
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@ -1003,6 +1003,20 @@ static void init_signals(void)
}
#else
#ifdef HAVE_LINUXTHREADS
/* Produce a core for the thread */
static sig_handler write_core(int sig)
{
fprintf(stderr,"Got signal %s in thread %d\n",sys_siglist[sig],getpid());
signal(sig, SIG_DFL);
if (fork() != 0) exit(1); // Abort main program
// Core will be written at exit
}
#endif
static void init_signals(void)
{
sigset_t set;
@ -1012,6 +1026,16 @@ static void init_signals(void)
sigset(THR_KILL_SIGNAL,end_thread_signal);
sigset(THR_SERVER_ALARM,print_signal_warning); // Should never be called!
#ifdef HAVE_LINUXTHREADS
if (test_flags & TEST_CORE_ON_SIGNAL)
{
struct sigaction sa; sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sigprocmask(SIG_SETMASK,&sa.sa_mask,NULL);
sa.sa_handler=write_core;
sigaction(SIGSEGV, &sa, NULL);
}
#endif
(void) sigemptyset(&set);
#ifdef THREAD_SPECIFIC_SIGPIPE
sigset(SIGPIPE,abort_thread);
@ -2134,7 +2158,7 @@ enum options {OPT_ISAM_LOG=256,OPT_SKIP_NEW,OPT_SKIP_GRANT,
OPT_MASTER_PORT, OPT_MASTER_INFO_FILE, OPT_MASTER_CONNECT_RETRY,
OPT_SQL_BIN_UPDATE_SAME, OPT_REPLICATE_DO_DB,
OPT_REPLICATE_IGNORE_DB, OPT_LOG_SLAVE_UPDATES,
OPT_BINLOG_DO_DB, OPT_BINLOG_IGNORE_DB};
OPT_BINLOG_DO_DB, OPT_BINLOG_IGNORE_DB, OPT_WANT_CORE};
static struct option long_options[] =
{
@ -2156,6 +2180,7 @@ static struct option long_options[] =
#ifdef __WIN__
{"console", no_argument, 0, OPT_CONSOLE},
#endif
{"core-file", no_argument, 0, OPT_WANT_CORE},
{"chroot", required_argument,0, 'r'},
{"character-sets-dir",required_argument,0, OPT_CHARSETS_DIR},
{"datadir", required_argument, 0, 'h'},
@ -2188,8 +2213,10 @@ static struct option long_options[] =
{"master-connect-retry", required_argument, 0, (int) OPT_MASTER_CONNECT_RETRY},
{"master-info-file", required_argument, 0, (int) OPT_MASTER_INFO_FILE},
{"new", no_argument, 0, 'n'},
{"old-protocol", no_argument, 0, 'o'},
{"old-protocol", no_argument, 0, 'o'},
#ifndef DBUG_OFF
{"one-thread", no_argument, 0, OPT_ONE_THREAD},
#endif
{"pid-file", required_argument, 0, (int) OPT_PID_FILE},
{"port", required_argument, 0, 'P'},
{"replicate-do-db", required_argument, 0, OPT_REPLICATE_DO_DB},
@ -2432,6 +2459,7 @@ static void usage(void)
--character-sets-dir=...\n\
Directory where character sets are\n\
--chroot=path Chroot mysqld daemon during startup\n\
--core-file Write core on errors\n\
-h, --datadir=path Path to the database root");
#ifndef DBUG_OFF
printf("\
@ -2465,9 +2493,11 @@ static void usage(void)
--pid-file=path Pid file used by safe_mysqld\n\
-P, --port=... Port number to use for connection\n\
-n, --new Use very new possible 'unsafe' functions\n\
-o, --old-protocol Use the old (3.20) protocol\n\
-o, --old-protocol Use the old (3.20) protocol\n");
#ifndef DBUG_OFF
puts("\
--one-thread Only use one thread (for debugging under Linux)\n");
/* We have to break the string here because of VC++ limits */
#endif
puts("\
-O, --set-variable var=option\n\
Give a variable an value. --help lists variables\n\
@ -2729,8 +2759,6 @@ static void get_options(int argc,char **argv)
binlog_do_db.push_back(db);
break;
}
case (int) OPT_SQL_BIN_UPDATE_SAME:
opt_sql_bin_update = 1;
break;
@ -2785,6 +2813,9 @@ static void get_options(int argc,char **argv)
case (int) OPT_ONE_THREAD:
test_flags |= TEST_NO_THREADS;
break;
case (int) OPT_WANT_CORE:
test_flags |= TEST_CORE_ON_SIGNAL;
break;
case (int) OPT_BIND_ADDRESS:
if (optarg && isdigit(optarg[0]))
{