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Refs Tokutek/ft-index#28 attach gdb to the running process and extract information on fatal signal.

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This commit is contained in:
Yoni Fogel 2013-07-05 14:11:31 -07:00
parent e69e0cff9a
commit 4279e16c5a
1 changed files with 19 additions and 0 deletions
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19
storage/tokudb/hatoku_hton.cc
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@ -316,6 +316,7 @@ static void tokudb_cleanup_log_files(void);
static int tokudb_end(handlerton * hton, ha_panic_function type);
static bool tokudb_flush_logs(handlerton * hton);
static bool tokudb_show_status(handlerton * hton, THD * thd, stat_print_fn * print, enum ha_stat_type);
static void tokudb_handle_fatal_signal(handlerton *hton, THD *thd, int sig);
static int tokudb_close_connection(handlerton * hton, THD * thd);
static int tokudb_commit(handlerton * hton, THD * thd, bool all);
static int tokudb_rollback(handlerton * hton, THD * thd, bool all);
@ -342,6 +343,9 @@ HASH tokudb_open_tables;
pthread_mutex_t tokudb_mutex;
pthread_mutex_t tokudb_meta_mutex;
static my_bool tokudb_gdb_on_fatal;
static char *tokudb_gdb_path;
static PARTITIONED_COUNTER tokudb_primary_key_bytes_inserted;
void toku_hton_update_primary_key_bytes_inserted(uint64_t row_size) {
increment_partitioned_counter(tokudb_primary_key_bytes_inserted, row_size);
@ -493,6 +497,7 @@ static int tokudb_init_func(void *p) {
tokudb_hton->panic = tokudb_end;
tokudb_hton->flush_logs = tokudb_flush_logs;
tokudb_hton->show_status = tokudb_show_status;
tokudb_hton->handle_fatal_signal = tokudb_handle_fatal_signal;
if (!tokudb_home)
tokudb_home = mysql_real_data_home;
DBUG_PRINT("info", ("tokudb_home: %s", tokudb_home));
@ -1855,6 +1860,14 @@ static bool tokudb_show_status(handlerton * hton, THD * thd, stat_print_fn * sta
return false;
}
static void tokudb_handle_fatal_signal(handlerton *hton __attribute__ ((__unused__)),
THD *thd __attribute__ ((__unused__)),
int sig) {
if (tokudb_gdb_on_fatal) {
db_env_try_gdb_stack_trace(tokudb_gdb_path);
}
}
static void tokudb_print_error(const DB_ENV * db_env, const char *db_errpfx, const char *buffer) {
sql_print_error("%s: %s", db_errpfx, buffer);
}
@ -1985,6 +1998,10 @@ static MYSQL_SYSVAR_UINT(read_status_frequency, tokudb_read_status_frequency, 0,
static MYSQL_SYSVAR_INT(fs_reserve_percent, tokudb_fs_reserve_percent, PLUGIN_VAR_READONLY, "TokuDB file system space reserve (percent free required)", NULL, NULL, 5, 0, 100, 0);
static MYSQL_SYSVAR_STR(tmp_dir, tokudb_tmp_dir, PLUGIN_VAR_READONLY, "Tokudb Tmp Dir", NULL, NULL, NULL);
static MYSQL_SYSVAR_STR(gdb_path, tokudb_gdb_path, PLUGIN_VAR_READONLY|PLUGIN_VAR_RQCMDARG, "TokuDB path to gdb for extra debug info on fatal signal", NULL, NULL, "/usr/bin/gdb");
static MYSQL_SYSVAR_BOOL(gdb_on_fatal, tokudb_gdb_on_fatal, 0, "TokuDB enable gdb debug info on fatal signal", NULL, NULL, true);
static void tokudb_fsync_log_period_update(THD *thd, struct st_mysql_sys_var *sys_var, void *var, const void *save) {
uint32 *period = (uint32 *) var;
*period = *(const ulonglong *) save;
@ -2031,6 +2048,8 @@ static struct st_mysql_sys_var *tokudb_system_variables[] = {
#endif
MYSQL_SYSVAR(analyze_time),
MYSQL_SYSVAR(fsync_log_period),
MYSQL_SYSVAR(gdb_path),
MYSQL_SYSVAR(gdb_on_fatal),
NULL
};