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include/my_global.h:
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include/thr_lock.h:
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include/violite.h:
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innobase/buf/buf0buf.c:
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sql/filesort.cc:
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This commit is contained in:
unknown
2003-03-16 19:17:54 +02:00
parent 59bf6f6ea5 bfbb0ad69d
commit a821703912
196 changed files with 11754 additions and 904 deletions
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95
sql/lock.cc
View File

@ -319,6 +319,25 @@ void mysql_lock_abort(THD *thd, TABLE *table)
}
/* Abort one thread / table combination */
void mysql_lock_abort_for_thread(THD *thd, TABLE *table)
{
MYSQL_LOCK *locked;
TABLE *write_lock_used;
DBUG_ENTER("mysql_lock_abort_for_thread");
if ((locked = get_lock_data(thd,&table,1,1,&write_lock_used)))
{
for (uint i=0; i < locked->lock_count; i++)
thr_abort_locks_for_thread(locked->locks[i]->lock,
table->in_use->real_id);
my_free((gptr) locked,MYF(0));
}
DBUG_VOID_RETURN;
}
MYSQL_LOCK *mysql_lock_merge(MYSQL_LOCK *a,MYSQL_LOCK *b)
{
MYSQL_LOCK *sql_lock;
@ -478,11 +497,12 @@ int lock_table_name(THD *thd, TABLE_LIST *table_list)
{
TABLE *table;
char key[MAX_DBKEY_LENGTH];
char *db= table_list->db ? table_list->db : (thd->db ? thd->db : (char*) "");
uint key_length;
DBUG_ENTER("lock_table_name");
safe_mutex_assert_owner(&LOCK_open);
key_length=(uint) (strmov(strmov(key,table_list->db)+1,table_list->real_name)
key_length=(uint) (strmov(strmov(key,db)+1,table_list->real_name)
-key)+ 1;
/* Only insert the table if we haven't insert it already */
@ -511,7 +531,7 @@ int lock_table_name(THD *thd, TABLE_LIST *table_list)
my_free((gptr) table,MYF(0));
DBUG_RETURN(-1);
}
if (remove_table_from_cache(thd, table_list->db, table_list->real_name))
if (remove_table_from_cache(thd, db, table_list->real_name))
DBUG_RETURN(1); // Table is in use
DBUG_RETURN(0);
}
@ -555,6 +575,77 @@ bool wait_for_locked_table_names(THD *thd, TABLE_LIST *table_list)
DBUG_RETURN(result);
}
/*
Lock all tables in list with a name lock
SYNOPSIS
lock_table_names()
thd Thread handle
table_list Names of tables to lock
NOTES
One must have a lock on LOCK_open when calling this
RETURN
0 ok
1 Fatal error (end of memory ?)
*/
bool lock_table_names(THD *thd, TABLE_LIST *table_list)
{
bool got_all_locks=1;
TABLE_LIST *lock_table;
for (lock_table=table_list ; lock_table ; lock_table=lock_table->next)
{
int got_lock;
if ((got_lock=lock_table_name(thd,lock_table)) < 0)
goto end; // Fatal error
if (got_lock)
got_all_locks=0; // Someone is using table
}
/* If some table was in use, wait until we got the lock */
if (!got_all_locks && wait_for_locked_table_names(thd, table_list))
goto end;
return 0;
end:
unlock_table_names(thd, table_list, lock_table);
return 1;
}
/*
Unlock all tables in list with a name lock
SYNOPSIS
unlock_table_names()
thd Thread handle
table_list Names of tables to unlock
last_table Don't unlock any tables after this one.
(default 0, which will unlock all tables)
NOTES
One must have a lock on LOCK_open when calling this
This function will send a COND_refresh signal to inform other threads
that the name locks are removed
RETURN
0 ok
1 Fatal error (end of memory ?)
*/
void unlock_table_names(THD *thd, TABLE_LIST *table_list,
TABLE_LIST *last_table)
{
for (TABLE_LIST *table=table_list ; table != last_table ; table=table->next)
unlock_table_name(thd,table);
pthread_cond_broadcast(&COND_refresh);
}
static void print_lock_error(int error)
{
int textno;