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Code Activity

Added some missing mutex_locks() when manipulating the table cache.

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This should fix some possible table cache corruptions when doing
OPTIMIZE or REPAIR table when other threads are opening new tables.


sql/sql_base.cc:
  Added missing mutex unlock on error condition
sql/sql_insert.cc:
  Added TODO item
sql/sql_show.cc:
  Added missing pthread_mutex_lock(&LOCK_open) when calling
  query_table_status().
sql/sql_table.cc:
  Added missing pthread_mutex_lock(&LOCK_open) when calling
  hash_delete(), unlock_table_name() and remove_table_from_cache().
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted
This commit is contained in:
unknown
2002-08-05 18:50:38 +03:00
parent e2cf3f8e45
commit 7952914415
5 changed files with 43 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
sql/sql_table.cc
View File

@@ -147,8 +147,8 @@ int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists)
error = 0;
err:
VOID(pthread_cond_broadcast(&COND_refresh)); // Signal to refresh
pthread_mutex_unlock(&LOCK_open);
VOID(pthread_cond_broadcast(&COND_refresh)); // Signal to refresh
pthread_mutex_lock(&thd->mysys_var->mutex);
thd->mysys_var->current_mutex= 0;
@@ -160,7 +160,7 @@ int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists)
my_error(ER_BAD_TABLE_ERROR,MYF(0),wrong_tables.c_ptr());
error=1;
}
if(error)
if (error)
DBUG_RETURN(-1);
send_ok(&thd->net);
DBUG_RETURN(0);
@@ -711,7 +711,9 @@ TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
table->reginfo.lock_type=TL_WRITE;
if (!((*lock)=mysql_lock_tables(thd,&table,1)))
{
VOID(pthread_mutex_lock(&LOCK_open));
hash_delete(&open_cache,(byte*) table);
VOID(pthread_mutex_unlock(&LOCK_open));
quick_rm_table(create_info->db_type,db,name);
DBUG_RETURN(0);
}
@@ -859,7 +861,9 @@ static int prepare_for_restore(THD* thd, TABLE_LIST* table)
reg_ext, 4),
MYF(MY_WME)))
{
pthread_mutex_lock(&LOCK_open);
unlock_table_name(thd, table);
pthread_mutex_unlock(&LOCK_open);
DBUG_RETURN(send_check_errmsg(thd, table, "restore",
"Failed copying .frm file"));
}
@@ -870,7 +874,9 @@ static int prepare_for_restore(THD* thd, TABLE_LIST* table)
if (generate_table(thd, table, 0))
{
pthread_mutex_lock(&LOCK_open);
unlock_table_name(thd, table);
pthread_mutex_unlock(&LOCK_open);
thd->net.no_send_ok = save_no_send_ok;
DBUG_RETURN(send_check_errmsg(thd, table, "restore",
"Failed generating table from .frm file"));
@@ -930,9 +936,12 @@ static int mysql_admin_table(THD* thd, TABLE_LIST* tables,
// now we should be able to open the partially restored table
// to finish the restore in the handler later on
if (!(table->table = reopen_name_locked_table(thd, table)))
{
pthread_mutex_lock(&LOCK_open);
unlock_table_name(thd, table);
pthread_mutex_unlock(&LOCK_open);
}
}
if (!table->table)
{
const char *err_msg;
@@ -1031,8 +1040,12 @@ static int mysql_admin_table(THD* thd, TABLE_LIST* tables,
if (fatal_error)
table->table->version=0; // Force close of table
else if (open_for_modify)
{
pthread_mutex_lock(&LOCK_open);
remove_table_from_cache(thd, table->table->table_cache_key,
table->table->real_name);
pthread_mutex_unlock(&LOCK_open);
}
close_thread_tables(thd);
if (my_net_write(&thd->net, (char*) packet->ptr(),
packet->length()))
@@ -1648,8 +1661,8 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
error=1;
if (error)
{
VOID(pthread_cond_broadcast(&COND_refresh));
VOID(pthread_mutex_unlock(&LOCK_open));
VOID(pthread_cond_broadcast(&COND_refresh));
goto err;
}
#ifdef HAVE_BERKELEY_DB