diff options
Diffstat (limited to 'sql/mysqld.cc')
| -rw-r--r-- | sql/mysqld.cc | 78 |
1 files changed, 68 insertions, 10 deletions
diff --git a/sql/mysqld.cc b/sql/mysqld.cc index 7e9eb6e7291..896be4a7f19 100644 --- a/sql/mysqld.cc +++ b/sql/mysqld.cc @@ -26,6 +26,7 @@ #include "mysqld_suffix.h" #include "mysys_err.h" #include "events.h" +#include "debug_sync.h" #include "../storage/myisam/ha_myisam.h" @@ -486,6 +487,9 @@ my_bool lower_case_file_system= 0; my_bool opt_large_pages= 0; my_bool opt_myisam_use_mmap= 0; uint opt_large_page_size= 0; +#if defined(ENABLED_DEBUG_SYNC) +uint opt_debug_sync_timeout= 0; +#endif /* defined(ENABLED_DEBUG_SYNC) */ my_bool opt_old_style_user_limits= 0, trust_function_creators= 0; /* True if there is at least one per-hour limit for some user, so we should @@ -1107,13 +1111,13 @@ void kill_mysql(void) #if defined(__NETWARE__) extern "C" void kill_server(int sig_ptr) -#define RETURN_FROM_KILL_SERVER DBUG_VOID_RETURN +#define RETURN_FROM_KILL_SERVER return #elif !defined(__WIN__) static void *kill_server(void *sig_ptr) -#define RETURN_FROM_KILL_SERVER DBUG_RETURN(0) +#define RETURN_FROM_KILL_SERVER return 0 #else static void __cdecl kill_server(int sig_ptr) -#define RETURN_FROM_KILL_SERVER DBUG_VOID_RETURN +#define RETURN_FROM_KILL_SERVER return #endif { DBUG_ENTER("kill_server"); @@ -1121,7 +1125,10 @@ static void __cdecl kill_server(int sig_ptr) int sig=(int) (long) sig_ptr; // This is passed a int // if there is a signal during the kill in progress, ignore the other if (kill_in_progress) // Safety + { + DBUG_LEAVE; RETURN_FROM_KILL_SERVER; + } kill_in_progress=TRUE; abort_loop=1; // This should be set if (sig != 0) // 0 is not a valid signal number @@ -1156,12 +1163,19 @@ static void __cdecl kill_server(int sig_ptr) pthread_join(select_thread, NULL); // wait for main thread #endif /* __NETWARE__ */ + DBUG_LEAVE; // Must match DBUG_ENTER() my_thread_end(); pthread_exit(0); /* purecov: end */ -#endif /* EMBEDDED_LIBRARY */ + RETURN_FROM_KILL_SERVER; // Avoid compiler warnings + +#else /* EMBEDDED_LIBRARY*/ + + DBUG_LEAVE; RETURN_FROM_KILL_SERVER; + +#endif /* EMBEDDED_LIBRARY */ } @@ -1323,6 +1337,10 @@ void clean_up(bool print_message) #ifdef USE_REGEX my_regex_end(); #endif +#if defined(ENABLED_DEBUG_SYNC) + /* End the debug sync facility. See debug_sync.cc. */ + debug_sync_end(); +#endif /* defined(ENABLED_DEBUG_SYNC) */ #if !defined(EMBEDDED_LIBRARY) if (!opt_bootstrap) @@ -1935,8 +1953,9 @@ bool one_thread_per_connection_end(THD *thd, bool put_in_cache) my_thread_end(); (void) pthread_cond_broadcast(&COND_thread_count); + DBUG_LEAVE; // Must match DBUG_ENTER() pthread_exit(0); - DBUG_RETURN(0); // Impossible + return 0; // Avoid compiler warnings } @@ -2756,7 +2775,9 @@ pthread_handler_t signal_hand(void *arg __attribute__((unused))) DBUG_PRINT("quit",("signal_handler: calling my_thread_end()")); my_thread_end(); signal_thread_in_use= 0; + DBUG_LEAVE; // Must match DBUG_ENTER() pthread_exit(0); // Safety + return 0; // Avoid compiler warnings } switch (sig) { case SIGTERM: @@ -3451,6 +3472,12 @@ static int init_common_variables(const char *conf_file_name, int argc, sys_var_slow_log_path.value= my_strdup(s, MYF(0)); sys_var_slow_log_path.value_length= strlen(s); +#if defined(ENABLED_DEBUG_SYNC) + /* Initialize the debug sync facility. See debug_sync.cc. */ + if (debug_sync_init()) + return 1; /* purecov: tested */ +#endif /* defined(ENABLED_DEBUG_SYNC) */ + #if (ENABLE_TEMP_POOL) if (use_temp_pool && bitmap_init(&temp_pool,0,1024,1)) return 1; @@ -3706,6 +3733,7 @@ static void end_ssl() static int init_server_components() { + FILE* reopen; DBUG_ENTER("init_server_components"); /* We need to call each of these following functions to ensure that @@ -3748,7 +3776,7 @@ static int init_server_components() if (freopen(log_error_file, "a+", stdout)) #endif { - freopen(log_error_file, "a+", stderr); + reopen= freopen(log_error_file, "a+", stderr); setbuf(stderr, NULL); } } @@ -4603,7 +4631,7 @@ default_service_handling(char **argv, if (opt_delim= strchr(extra_opt, '=')) { size_t length= ++opt_delim - extra_opt; - strnmov(pos, extra_opt, length); + pos= strnmov(pos, extra_opt, length); } else opt_delim= extra_opt; @@ -4788,10 +4816,10 @@ static bool read_init_file(char *file_name) DBUG_ENTER("read_init_file"); DBUG_PRINT("enter",("name: %s",file_name)); if (!(file=my_fopen(file_name,O_RDONLY,MYF(MY_WME)))) - return(1); + DBUG_RETURN(TRUE); bootstrap(file); (void) my_fclose(file,MYF(MY_WME)); - return 0; + DBUG_RETURN(FALSE); } @@ -4844,7 +4872,7 @@ void create_thread_to_handle_connection(THD *thd) handle_one_connection, (void*) thd))) { - /* purify: begin inspected */ + /* purecov: begin inspected */ DBUG_PRINT("error", ("Can't create thread to handle request (error %d)", error)); @@ -5657,6 +5685,9 @@ enum options_mysqld OPT_SECURE_FILE_PRIV, OPT_MIN_EXAMINED_ROW_LIMIT, OPT_LOG_SLOW_SLAVE_STATEMENTS, +#if defined(ENABLED_DEBUG_SYNC) + OPT_DEBUG_SYNC_TIMEOUT, +#endif /* defined(ENABLED_DEBUG_SYNC) */ OPT_OLD_MODE, OPT_SLAVE_EXEC_MODE, OPT_GENERAL_LOG_FILE, @@ -6428,6 +6459,14 @@ log and this option does nothing anymore.", "Decision to use in heuristic recover process. Possible values are COMMIT or ROLLBACK.", (uchar**) &opt_tc_heuristic_recover, (uchar**) &opt_tc_heuristic_recover, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0}, +#if defined(ENABLED_DEBUG_SYNC) + {"debug-sync-timeout", OPT_DEBUG_SYNC_TIMEOUT, + "Enable the debug sync facility " + "and optionally specify a default wait timeout in seconds. " + "A zero value keeps the facility disabled.", + (uchar**) &opt_debug_sync_timeout, 0, + 0, GET_UINT, OPT_ARG, 0, 0, UINT_MAX, 0, 0, 0}, +#endif /* defined(ENABLED_DEBUG_SYNC) */ {"temp-pool", OPT_TEMP_POOL, #if (ENABLE_TEMP_POOL) "Using this option will cause most temporary files created to use a small set of names, rather than a unique name for each new file.", @@ -7612,6 +7651,9 @@ static int mysql_init_variables(void) bzero((uchar*) &mysql_tmpdir_list, sizeof(mysql_tmpdir_list)); bzero((char *) &global_status_var, sizeof(global_status_var)); opt_large_pages= 0; +#if defined(ENABLED_DEBUG_SYNC) + opt_debug_sync_timeout= 0; +#endif /* defined(ENABLED_DEBUG_SYNC) */ key_map_full.set_all(); /* Character sets */ @@ -8346,6 +8388,22 @@ mysqld_get_one_option(int optid, lower_case_table_names= argument ? atoi(argument) : 1; lower_case_table_names_used= 1; break; +#if defined(ENABLED_DEBUG_SYNC) + case OPT_DEBUG_SYNC_TIMEOUT: + /* + Debug Sync Facility. See debug_sync.cc. + Default timeout for WAIT_FOR action. + Default value is zero (facility disabled). + If option is given without an argument, supply a non-zero value. + */ + if (!argument) + { + /* purecov: begin tested */ + opt_debug_sync_timeout= DEBUG_SYNC_DEFAULT_WAIT_TIMEOUT; + /* purecov: end */ + } + break; +#endif /* defined(ENABLED_DEBUG_SYNC) */ } return 0; } |