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Commit f4fe2c3b authored by ndbdev@dl145b.mysql.com's avatar ndbdev@dl145b.mysql.com
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Merge tulin@bk-internal.mysql.com:/home/bk/mysql-5.0 

into dl145b.mysql.com:/home/ndbdev/tomas/mysql-5.1
parents 98a26f0c 5cdaf463
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Showing with 168 additions and 76 deletions
include/thr_lock.h
View file @ f4fe2c3b
......@@ -144,7 +144,7 @@ enum enum_thr_lock_result thr_multi_lock(THR_LOCK_DATA **data,
uint count, THR_LOCK_OWNER *owner);
void thr_multi_unlock(THR_LOCK_DATA **data,uint count);
void thr_abort_locks(THR_LOCK *lock);
void thr_abort_locks_for_thread(THR_LOCK *lock, pthread_t thread);
bool thr_abort_locks_for_thread(THR_LOCK *lock, pthread_t thread);
void thr_print_locks(void); /* For debugging */
my_bool thr_upgrade_write_delay_lock(THR_LOCK_DATA *data);
my_bool thr_reschedule_write_lock(THR_LOCK_DATA *data);
......
mysys/thr_lock.c
View file @ f4fe2c3b
......@@ -1048,9 +1048,10 @@ void thr_abort_locks(THR_LOCK *lock)
This is used to abort all locks for a specific thread
*/
void thr_abort_locks_for_thread(THR_LOCK *lock, pthread_t thread)
bool thr_abort_locks_for_thread(THR_LOCK *lock, pthread_t thread)
{
THR_LOCK_DATA *data;
bool found= FALSE;
DBUG_ENTER("thr_abort_locks_for_thread");
pthread_mutex_lock(&lock->mutex);
......@@ -1061,6 +1062,7 @@ void thr_abort_locks_for_thread(THR_LOCK *lock, pthread_t thread)
DBUG_PRINT("info",("Aborting read-wait lock"));
data->type= TL_UNLOCK; /* Mark killed */
/* It's safe to signal the cond first: we're still holding the mutex. */
found= TRUE;
pthread_cond_signal(data->cond);
data->cond= 0; /* Removed from list */
......@@ -1076,6 +1078,7 @@ void thr_abort_locks_for_thread(THR_LOCK *lock, pthread_t thread)
{
DBUG_PRINT("info",("Aborting write-wait lock"));
data->type= TL_UNLOCK;
found= TRUE;
pthread_cond_signal(data->cond);
data->cond= 0;
......@@ -1086,7 +1089,7 @@ void thr_abort_locks_for_thread(THR_LOCK *lock, pthread_t thread)
}
}
pthread_mutex_unlock(&lock->mutex);
DBUG_VOID_RETURN;
DBUG_RETURN(found);
}
......
sql/handler.cc
View file @ f4fe2c3b
......@@ -2268,6 +2268,8 @@ int ha_discover(THD *thd, const char *db, const char *name,
int error= -1; // Table does not exist in any handler
DBUG_ENTER("ha_discover");
DBUG_PRINT("enter", ("db: %s, name: %s", db, name));
if (is_prefix(name,tmp_file_prefix)) /* skip temporary tables */
DBUG_RETURN(error);
#ifdef HAVE_NDBCLUSTER_DB
if (have_ndbcluster == SHOW_OPTION_YES)
error= ndbcluster_discover(thd, db, name, frmblob, frmlen);
......
sql/lock.cc
View file @ f4fe2c3b
......@@ -349,20 +349,25 @@ void mysql_lock_abort(THD *thd, TABLE *table)
/* Abort one thread / table combination */
void mysql_lock_abort_for_thread(THD *thd, TABLE *table)
bool mysql_lock_abort_for_thread(THD *thd, TABLE *table)
{
MYSQL_LOCK *locked;
TABLE *write_lock_used;
bool result= FALSE;
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,
{
bool found;
found= thr_abort_locks_for_thread(locked->locks[i]->lock,
table->in_use->real_id);
result|= found;
}
my_free((gptr) locked,MYF(0));
}
DBUG_VOID_RETURN;
DBUG_RETURN(result);
}
......@@ -605,8 +610,14 @@ 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, db, table_list->table_name, 0))
{
if (remove_table_from_cache(thd, db,
table_list->table_name, RTFC_NO_FLAG))
{
DBUG_RETURN(1); // Table is in use
}
}
DBUG_RETURN(0);
}
......
sql/mysql_priv.h
View file @ f4fe2c3b
......@@ -966,8 +966,12 @@ bool rename_temporary_table(THD* thd, TABLE *table, const char *new_db,
const char *table_name);
void remove_db_from_cache(const char *db);
void flush_tables();
#define RTFC_NO_FLAG 0x0000
#define RTFC_OWNED_BY_THD_FLAG 0x0001
#define RTFC_WAIT_OTHER_THREAD_FLAG 0x0002
#define RTFC_CHECK_KILLED_FLAG 0x0004
bool remove_table_from_cache(THD *thd, const char *db, const char *table,
bool return_if_owned_by_thd);
uint flags);
bool close_cached_tables(THD *thd, bool wait_for_refresh, TABLE_LIST *tables);
void copy_field_from_tmp_record(Field *field,int offset);
bool fill_record(THD *thd, Field **field, List<Item> &values,
......@@ -1231,7 +1235,7 @@ void mysql_unlock_read_tables(THD *thd, MYSQL_LOCK *sql_lock);
void mysql_unlock_some_tables(THD *thd, TABLE **table,uint count);
void mysql_lock_remove(THD *thd, MYSQL_LOCK *locked,TABLE *table);
void mysql_lock_abort(THD *thd, TABLE *table);
void mysql_lock_abort_for_thread(THD *thd, TABLE *table);
bool mysql_lock_abort_for_thread(THD *thd, TABLE *table);
MYSQL_LOCK *mysql_lock_merge(MYSQL_LOCK *a,MYSQL_LOCK *b);
bool lock_global_read_lock(THD *thd);
void unlock_global_read_lock(THD *thd);
......
sql/sql_base.cc
View file @ f4fe2c3b
......@@ -292,7 +292,8 @@ bool close_cached_tables(THD *thd, bool if_wait_for_refresh,
bool found=0;
for (TABLE_LIST *table= tables; table; table= table->next_local)
{
if (remove_table_from_cache(thd, table->db, table->table_name, 1))
if (remove_table_from_cache(thd, table->db, table->table_name,
RTFC_OWNED_BY_THD_FLAG))
found=1;
}
if (!found)
......@@ -4134,21 +4135,25 @@ void flush_tables()
*/
bool remove_table_from_cache(THD *thd, const char *db, const char *table_name,
bool return_if_owned_by_thd)
uint flags)
{
char key[MAX_DBKEY_LENGTH];
uint key_length;
TABLE *table;
bool result=0;
bool result=0, signalled= 0;
DBUG_ENTER("remove_table_from_cache");
key_length=(uint) (strmov(strmov(key,db)+1,table_name)-key)+1;
for (;;)
{
result= signalled= 0;
for (table=(TABLE*) hash_search(&open_cache,(byte*) key,key_length) ;
table;
table = (TABLE*) hash_next(&open_cache,(byte*) key,key_length))
{
THD *in_use;
table->s->version= 0L; /* Free when thread is ready */
table->s->version=0L; /* Free when thread is ready */
if (!(in_use=table->in_use))
{
DBUG_PRINT("info",("Table was not in use"));
......@@ -4168,6 +4173,7 @@ bool remove_table_from_cache(THD *thd, const char *db, const char *table_name,
if (in_use->mysys_var->current_cond)
{
pthread_mutex_lock(in_use->mysys_var->current_mutex);
signalled= 1;
pthread_cond_broadcast(in_use->mysys_var->current_cond);
pthread_mutex_unlock(in_use->mysys_var->current_mutex);
}
......@@ -4182,14 +4188,46 @@ bool remove_table_from_cache(THD *thd, const char *db, const char *table_name,
thd_table= thd_table->next)
{
if (thd_table->db_stat) // If table is open
mysql_lock_abort_for_thread(thd, thd_table);
signalled|= mysql_lock_abort_for_thread(thd, thd_table);
}
}
else
result= result || return_if_owned_by_thd;
result= result || (flags & RTFC_OWNED_BY_THD_FLAG);
}
while (unused_tables && !unused_tables->s->version)
VOID(hash_delete(&open_cache,(byte*) unused_tables));
if (result && (flags & RTFC_WAIT_OTHER_THREAD_FLAG))
{
if (!(flags & RTFC_CHECK_KILLED_FLAG) || !thd->killed)
{
if (likely(signalled))
{
dropping_tables++;
(void) pthread_cond_wait(&COND_refresh, &LOCK_open);
dropping_tables--;
continue;
}
else
{
/*
It can happen that another thread has opened the
table but has not yet locked any table at all. Since
it can be locked waiting for a table that our thread
has done LOCK TABLE x WRITE on previously, we need to
ensure that the thread actually hears our signal
before we go to sleep. Thus we wait for a short time
and then we retry another loop in the
remove_table_from_cache routine.
*/
pthread_mutex_unlock(&LOCK_open);
my_sleep(10);
pthread_mutex_lock(&LOCK_open);
continue;
}
}
}
break;
}
DBUG_RETURN(result);
}
......
sql/sql_table.cc
View file @ f4fe2c3b
......@@ -230,6 +230,7 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
for (table= tables; table; table= table->next_local)
{
char *db=table->db;
uint flags;
mysql_ha_flush(thd, table, MYSQL_HA_CLOSE_FINAL);
if (!close_temporary_table(thd, db, table->table_name))
{
......@@ -241,13 +242,8 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
if (!drop_temporary)
{
abort_locked_tables(thd,db,table->table_name);
while (remove_table_from_cache(thd, db, table->table_name, 0) &&
!thd->killed)
{
dropping_tables++;
(void) pthread_cond_wait(&COND_refresh,&LOCK_open);
dropping_tables--;
}
flags= RTFC_WAIT_OTHER_THREAD_FLAG | RTFC_CHECK_KILLED_FLAG;
remove_table_from_cache(thd,db,table->table_name,flags);
drop_locked_tables(thd,db,table->table_name);
if (thd->killed)
{
......@@ -1938,12 +1934,8 @@ static void wait_while_table_is_used(THD *thd,TABLE *table,
mysql_lock_abort(thd, table); // end threads waiting on lock
/* Wait until all there are no other threads that has this table open */
while (remove_table_from_cache(thd, table->s->db, table->s->table_name, 0))
{
dropping_tables++;
(void) pthread_cond_wait(&COND_refresh,&LOCK_open);
dropping_tables--;
}
remove_table_from_cache(thd, table->s->db,
table->s->table_name, RTFC_WAIT_OTHER_THREAD_FLAG);
DBUG_VOID_RETURN;
}
......@@ -2326,18 +2318,14 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
/* Close all instances of the table to allow repair to rename files */
if (lock_type == TL_WRITE && table->table->s->version)
{
uint flags;
pthread_mutex_lock(&LOCK_open);
const char *old_message=thd->enter_cond(&COND_refresh, &LOCK_open,
"Waiting to get writelock");
mysql_lock_abort(thd,table->table);
while (remove_table_from_cache(thd, table->table->s->db,
table->table->s->table_name, 0) &&
! thd->killed)
{
dropping_tables++;
(void) pthread_cond_wait(&COND_refresh,&LOCK_open);
dropping_tables--;
}
flags= RTFC_WAIT_OTHER_THREAD_FLAG | RTFC_CHECK_KILLED_FLAG;
remove_table_from_cache(thd, table->table->s->db,
table->table->s->table_name, flags);
thd->exit_cond(old_message);
if (thd->killed)
goto err;
......@@ -2482,7 +2470,7 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
{
pthread_mutex_lock(&LOCK_open);
remove_table_from_cache(thd, table->table->s->db,
table->table->s->table_name, 0);
table->table->s->table_name, RTFC_NO_FLAG);
pthread_mutex_unlock(&LOCK_open);
/* May be something modified consequently we have to invalidate cache */
query_cache_invalidate3(thd, table->table, 0);
......@@ -3862,7 +3850,8 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
if (table)
{
VOID(table->file->extra(HA_EXTRA_FORCE_REOPEN)); // Use new file
remove_table_from_cache(thd,db,table_name, 0); // Mark in-use copies old
remove_table_from_cache(thd,db,table_name,RTFC_NO_FLAG);
// Mark in-use copies old
mysql_lock_abort(thd,table); // end threads waiting on lock
}
VOID(quick_rm_table(old_db_type,db,old_name));
......
tests/mysql_client_test.c
View file @ f4fe2c3b
......@@ -13888,6 +13888,50 @@ static void test_bug10760()
mysql_autocommit(mysql, TRUE); /* restore default */
}
static void test_bug12001()
{
MYSQL *mysql_local;
MYSQL_RES *result;
const char *query= "DROP TABLE IF EXISTS test_table;"
"CREATE TABLE test_table(id INT);"
"INSERT INTO test_table VALUES(10);"
"UPDATE test_table SET id=20 WHERE id=10;"
"SELECT * FROM test_table;"
"INSERT INTO non_existent_table VALUES(11);";
int rc, res;
myheader("test_bug12001");
if (!(mysql_local= mysql_init(NULL)))
{
fprintf(stdout, "\n mysql_init() failed");
exit(1);
}
/* Create connection that supports multi statements */
if (!mysql_real_connect(mysql_local, opt_host, opt_user,
opt_password, current_db, opt_port,
opt_unix_socket, CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS)) {
fprintf(stdout, "\n mysql_real_connect() failed");
exit(1);
}
rc= mysql_query(mysql_local, query);
myquery(rc);
do {
if (mysql_field_count(mysql_local) && (result= mysql_use_result(mysql_local))) {
mysql_free_result(result);
}
} while (!(res= mysql_next_result(mysql_local)));
rc= mysql_query(mysql_local, "DROP TABLE IF EXISTS test_table");
myquery(rc);
mysql_close(mysql_local);
DIE_UNLESS(res==1);
}
/*
Read and parse arguments and MySQL options from my.cnf
*/
......@@ -14133,6 +14177,7 @@ static struct my_tests_st my_tests[]= {
{ "test_bug11183", test_bug11183 },
{ "test_bug11037", test_bug11037 },
{ "test_bug10760", test_bug10760 },
{ "test_bug12001", test_bug12001 },
{ 0, 0 }
};
......
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