database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

WL#2360 Performance schema

Browse Source 
Part IV: sql instrumentation
This commit is contained in:
Marc Alff
2010-01-06 22:42:07 -07:00
parent b2b055034c
commit a4c3bc618b
133 changed files with 5198 additions and 2295 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
sql/sql_servers.cc
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2000-2003 MySQL AB
/* Copyright (C) 2000-2003 MySQL AB, 2008-2009 Sun Microsystems, Inc
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -47,7 +47,7 @@
static HASH servers_cache;
static MEM_ROOT mem;
static rw_lock_t THR_LOCK_servers;
static mysql_rwlock_t THR_LOCK_servers;
static bool get_server_from_table_to_cache(TABLE *table);
@ -89,6 +89,26 @@ static uchar *servers_cache_get_key(FOREIGN_SERVER *server, size_t *length,
DBUG_RETURN((uchar*) server->server_name);
}
#ifdef HAVE_PSI_INTERFACE
static PSI_rwlock_key key_rwlock_THR_LOCK_servers;
static PSI_rwlock_info all_servers_cache_rwlocks[]=
{
{ &key_rwlock_THR_LOCK_servers, "THR_LOCK_servers", PSI_FLAG_GLOBAL}
};
static void init_servers_cache_psi_keys(void)
{
const char* category= "sql";
int count;
if (PSI_server == NULL)
return;
count= array_elements(all_servers_cache_rwlocks);
PSI_server->register_rwlock(category, all_servers_cache_rwlocks, count);
}
#endif /* HAVE_PSI_INTERFACE */
/*
Initialize structures responsible for servers used in federated
@ -115,8 +135,12 @@ bool servers_init(bool dont_read_servers_table)
bool return_val= FALSE;
DBUG_ENTER("servers_init");
#ifdef HAVE_PSI_INTERFACE
init_servers_cache_psi_keys();
#endif
/* init the mutex */
if (my_rwlock_init(&THR_LOCK_servers, NULL))
if (mysql_rwlock_init(key_rwlock_THR_LOCK_servers, &THR_LOCK_servers))
DBUG_RETURN(TRUE);
/* initialise our servers cache */
@ -231,7 +255,7 @@ bool servers_reload(THD *thd)
}
DBUG_PRINT("info", ("locking servers_cache"));
rw_wrlock(&THR_LOCK_servers);
mysql_rwlock_wrlock(&THR_LOCK_servers);
bzero((char*) tables, sizeof(tables));
tables[0].alias= tables[0].table_name= (char*) "servers";
@ -256,7 +280,7 @@ bool servers_reload(THD *thd)
end:
close_thread_tables(thd);
DBUG_PRINT("info", ("unlocking servers_cache"));
rw_unlock(&THR_LOCK_servers);
mysql_rwlock_unlock(&THR_LOCK_servers);
DBUG_RETURN(return_val);
}
@ -586,7 +610,7 @@ int drop_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
tables.db= (char*) "mysql";
tables.alias= tables.table_name= (char*) "servers";
rw_wrlock(&THR_LOCK_servers);
mysql_rwlock_wrlock(&THR_LOCK_servers);
/* hit the memory hit first */
if ((error= delete_server_record_in_cache(server_options)))
@ -610,7 +634,7 @@ int drop_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
}
end:
rw_unlock(&THR_LOCK_servers);
mysql_rwlock_unlock(&THR_LOCK_servers);
DBUG_RETURN(error);
}
@ -962,7 +986,7 @@ int create_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
DBUG_PRINT("info", ("server_options->server_name %s",
server_options->server_name));
rw_wrlock(&THR_LOCK_servers);
mysql_rwlock_wrlock(&THR_LOCK_servers);
/* hit the memory first */
if (my_hash_search(&servers_cache, (uchar*) server_options->server_name,
@ -983,7 +1007,7 @@ int create_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
DBUG_PRINT("info", ("error returned %d", error));
end:
rw_unlock(&THR_LOCK_servers);
mysql_rwlock_unlock(&THR_LOCK_servers);
DBUG_RETURN(error);
}
@ -1012,7 +1036,7 @@ int alter_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
DBUG_PRINT("info", ("server_options->server_name %s",
server_options->server_name));
rw_wrlock(&THR_LOCK_servers);
mysql_rwlock_wrlock(&THR_LOCK_servers);
if (!(existing= (FOREIGN_SERVER *) my_hash_search(&servers_cache,
(uchar*) name.str,
@ -1037,7 +1061,7 @@ int alter_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
end:
DBUG_PRINT("info", ("error returned %d", error));
rw_unlock(&THR_LOCK_servers);
mysql_rwlock_unlock(&THR_LOCK_servers);
DBUG_RETURN(error);
}
@ -1203,7 +1227,7 @@ void servers_free(bool end)
my_hash_reset(&servers_cache);
DBUG_VOID_RETURN;
}
rwlock_destroy(&THR_LOCK_servers);
mysql_rwlock_destroy(&THR_LOCK_servers);
free_root(&mem,MYF(0));
my_hash_free(&servers_cache);
DBUG_VOID_RETURN;
@ -1285,7 +1309,7 @@ FOREIGN_SERVER *get_server_by_name(MEM_ROOT *mem, const char *server_name,
}
DBUG_PRINT("info", ("locking servers_cache"));
rw_rdlock(&THR_LOCK_servers);
mysql_rwlock_rdlock(&THR_LOCK_servers);
if (!(server= (FOREIGN_SERVER *) my_hash_search(&servers_cache,
(uchar*) server_name,
server_name_length)))
@ -1299,7 +1323,7 @@ FOREIGN_SERVER *get_server_by_name(MEM_ROOT *mem, const char *server_name,
server= clone_server(mem, server, buff);
DBUG_PRINT("info", ("unlocking servers_cache"));
rw_unlock(&THR_LOCK_servers);
mysql_rwlock_unlock(&THR_LOCK_servers);
DBUG_RETURN(server);
}