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added reopen_name_locked_table()

Browse source 
changed RESTORE TABLE to use name lock


sql/mysql_priv.h:
  added reopen_name_locked_table()
sql/sql_base.cc:
  added reopen_name_locked_table()
sql/sql_table.cc:
  fixed repare_for_restore() to use fn_format() power
  changed RESTORE TABLE to use name lock
This commit is contained in:
unknown 2000-09-19 16:17:19 -06:00
commit de3381459b
3 changed files with 62 additions and 12 deletions
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41
sql/sql_base.cc
View file

@ -841,6 +841,47 @@ void wait_for_refresh(THD *thd)
pthread_mutex_unlock(&thd->mysys_var->mutex);
}
TABLE *reopen_name_locked_table(THD* thd, TABLE_LIST* table_list)
{
DBUG_ENTER("reopen_name_locked_table");
if (thd->killed)
DBUG_RETURN(0);
TABLE* table;
if(!(table = table_list->table))
DBUG_RETURN(0);
char* db = thd->db ? thd->db : table_list->db;
char* table_name = table_list->name;
char key[MAX_DBKEY_LENGTH];
uint key_length;
key_length=(uint) (strmov(strmov(key,db)+1,table_name)-key)+1;
pthread_mutex_lock(&LOCK_open);
if(open_unireg_entry(table, db, table_name, table_name) ||
!(table->table_cache_key =memdup_root(&table->mem_root,(char*) key,
key_length)))
{
pthread_mutex_unlock(&LOCK_open);
DBUG_RETURN(0);
}
table->key_length=key_length;
table->version=refresh_version;
table->flush_version=flush_version;
if (!key_cache_inited)
ha_key_cache();
table->in_use = thd;
check_unused();
pthread_mutex_unlock(&LOCK_open);
table->tablenr=thd->current_tablenr++;
table->used_fields=0;
table->const_table=0;
table->outer_join=table->null_row=table->maybe_null=0;
table->status=STATUS_NO_RECORD;
table->keys_in_use_for_query=table->used_keys= table->keys_in_use;
DBUG_RETURN(table);
}
/******************************************************************************
** open a table