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WL#1265: Fix proper ALTER/DROP support in the SP cache.

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New sp_cache C API. When an SP is dropped, old caches (in other threads)
become invalid and are cleared.
Also, the caches in THD are only created on demand.
This commit is contained in:
pem@mysql.comhem.se
2003-10-21 12:08:35 +02:00
parent 52dae5c79e
commit e42a724fa7
6 changed files with 217 additions and 44 deletions
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16
sql/sql_class.cc
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@@ -156,8 +156,8 @@ THD::THD():user_time(0), is_fatal_error(0),
(hash_get_key) get_var_key,
(hash_free_key) free_user_var, 0);
sp_proc_cache= new sp_cache();
sp_func_cache= new sp_cache();
sp_proc_cache= NULL;
sp_func_cache= NULL;
/* For user vars replication*/
if (opt_bin_log)
@@ -260,8 +260,8 @@ void THD::change_user(void)
hash_init(&user_vars, system_charset_info, USER_VARS_HASH_SIZE, 0, 0,
(hash_get_key) get_var_key,
(hash_free_key) free_user_var, 0);
sp_proc_cache->init();
sp_func_cache->init();
sp_cache_clear(&sp_proc_cache);
sp_cache_clear(&sp_func_cache);
}
@@ -285,8 +285,8 @@ void THD::cleanup(void)
close_temporary_tables(this);
delete_dynamic(&user_var_events);
hash_free(&user_vars);
sp_proc_cache->cleanup();
sp_func_cache->cleanup();
sp_cache_clear(&sp_proc_cache);
sp_cache_clear(&sp_func_cache);
if (global_read_lock)
unlock_global_read_lock(this);
if (ull)
@@ -328,8 +328,8 @@ THD::~THD()
}
#endif
delete sp_proc_cache;
delete sp_func_cache;
sp_cache_clear(&sp_proc_cache);
sp_cache_clear(&sp_func_cache);
DBUG_PRINT("info", ("freeing host"));
if (host != localhost) // If not pointer to constant