diff options
Diffstat (limited to 'sql/mysql_priv.h')
| -rw-r--r-- | sql/mysql_priv.h | 73 |
1 files changed, 63 insertions, 10 deletions
diff --git a/sql/mysql_priv.h b/sql/mysql_priv.h index 2316eae4cdb..a926af0370c 100644 --- a/sql/mysql_priv.h +++ b/sql/mysql_priv.h @@ -53,6 +53,7 @@ #include "sql_array.h" #include "sql_plugin.h" #include "scheduler.h" +#include <my_atomic.h> #include <mysql/psi/mysql_file.h> #ifndef __WIN__ #include <netdb.h> @@ -89,11 +90,60 @@ typedef ulong nesting_map; /* Used for flags of nesting constructs */ typedef ulonglong nested_join_map; /* query_id */ -typedef ulonglong query_id_t; +typedef int64 query_id_t; extern query_id_t global_query_id; +extern int32 thread_running; +extern my_atomic_rwlock_t global_query_id_lock; +extern my_atomic_rwlock_t thread_running_lock; /* increment query_id and return it. */ -inline query_id_t next_query_id() { return global_query_id++; } +inline query_id_t next_query_id() +{ + query_id_t id; + my_atomic_rwlock_wrlock(&global_query_id_lock); + id= my_atomic_add64(&global_query_id, 1); + my_atomic_rwlock_wrunlock(&global_query_id_lock); + return (id+1); +} + +inline query_id_t get_query_id() +{ + query_id_t id; + my_atomic_rwlock_wrlock(&global_query_id_lock); + id= my_atomic_load64(&global_query_id); + my_atomic_rwlock_wrunlock(&global_query_id_lock); + return id; +} + +inline int32 +inc_thread_running() +{ + int32 num_thread_running; + my_atomic_rwlock_wrlock(&thread_running_lock); + num_thread_running= my_atomic_add32(&thread_running, 1); + my_atomic_rwlock_wrunlock(&thread_running_lock); + return (num_thread_running+1); +} + +inline int32 +dec_thread_running() +{ + int32 num_thread_running; + my_atomic_rwlock_wrlock(&thread_running_lock); + num_thread_running= my_atomic_add32(&thread_running, -1); + my_atomic_rwlock_wrunlock(&thread_running_lock); + return (num_thread_running-1); +} + +inline int32 +get_thread_running() +{ + int32 num_thread_running; + my_atomic_rwlock_wrlock(&thread_running_lock); + num_thread_running= my_atomic_load32(&thread_running); + my_atomic_rwlock_wrunlock(&thread_running_lock); + return num_thread_running; +} /* useful constants */ extern MYSQL_PLUGIN_IMPORT const key_map key_map_empty; @@ -1476,8 +1526,8 @@ int setup_conds(THD *thd, TABLE_LIST *tables, TABLE_LIST *leaves, COND **conds); int setup_ftfuncs(SELECT_LEX* select); int init_ftfuncs(THD *thd, SELECT_LEX* select, bool no_order); -void wait_for_condition(THD *thd, pthread_mutex_t *mutex, - pthread_cond_t *cond); +void wait_for_condition(THD *thd, mysql_mutex_t *mutex, + mysql_cond_t *cond); bool open_tables(THD *thd, TABLE_LIST **tables, uint *counter, uint flags, Prelocking_strategy *prelocking_strategy); inline bool @@ -1948,7 +1998,7 @@ extern bool opt_ignore_builtin_innodb; extern my_bool opt_character_set_client_handshake; extern bool volatile abort_loop, shutdown_in_progress; extern bool in_bootstrap; -extern uint volatile thread_count, thread_running, global_read_lock; +extern uint volatile thread_count, global_read_lock; extern uint connection_count; extern my_bool opt_sql_bin_update, opt_safe_user_create, opt_no_mix_types; extern my_bool opt_safe_show_db, opt_local_infile, opt_myisam_use_mmap; @@ -1981,13 +2031,15 @@ extern FILE *bootstrap_file; extern int bootstrap_error; extern FILE *stderror_file; extern pthread_key(MEM_ROOT**,THR_MALLOC); -extern pthread_mutex_t LOCK_mysql_create_db, LOCK_open, LOCK_lock_db, - LOCK_mapped_file,LOCK_user_locks, LOCK_status, - LOCK_error_log, LOCK_delayed_insert, LOCK_uuid_generator, - LOCK_delayed_status, LOCK_delayed_create, LOCK_crypt, LOCK_timezone, +extern pthread_mutex_t LOCK_mapped_file, + LOCK_error_log, LOCK_uuid_generator, + LOCK_crypt, LOCK_timezone, LOCK_slave_list, LOCK_active_mi, LOCK_manager, LOCK_global_read_lock, LOCK_global_system_variables, LOCK_user_conn, LOCK_prepared_stmt_count, LOCK_error_messages, LOCK_connection_count; +extern mysql_mutex_t LOCK_mysql_create_db, LOCK_lock_db, LOCK_open, + LOCK_user_locks, LOCK_status, LOCK_delayed_status, LOCK_delayed_insert, + LOCK_delayed_create; extern MYSQL_PLUGIN_IMPORT pthread_mutex_t LOCK_thread_count; #ifdef HAVE_OPENSSL extern pthread_mutex_t LOCK_des_key_file; @@ -1997,7 +2049,8 @@ extern pthread_cond_t COND_server_started; extern int mysqld_server_started; extern rw_lock_t LOCK_grant, LOCK_sys_init_connect, LOCK_sys_init_slave; extern rw_lock_t LOCK_system_variables_hash; -extern pthread_cond_t COND_refresh, COND_thread_count, COND_manager; +extern mysql_cond_t COND_refresh; +extern pthread_cond_t COND_thread_count, COND_manager; extern pthread_cond_t COND_global_read_lock; extern pthread_attr_t connection_attrib; extern I_List<THD> threads; |