mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-05-14 19:07:15 +02:00
Code Issues Projects Releases Packages Wiki Activity

Merge bk-internal:/home/bk/mysql-5.0

Browse source 
into serg.mylan:/usr/home/serg/Abk/mysql-5.0


sql/handler.cc:
  Auto merged
sql/lock.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
This commit is contained in:
unknown 2005-03-17 08:46:48 +01:00
commit 5c1b91f1ee
8 changed files with 55 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

30
sql/lock.cc
View file

@ -800,8 +800,8 @@ bool lock_global_read_lock(THD *thd)
if (!thd->global_read_lock)
{
(void) pthread_mutex_lock(&LOCK_open);
const char *old_message=thd->enter_cond(&COND_refresh, &LOCK_open,
(void) pthread_mutex_lock(&LOCK_global_read_lock);
const char *old_message=thd->enter_cond(&COND_refresh, &LOCK_global_read_lock,
"Waiting to get readlock");
DBUG_PRINT("info",
("waiting_for: %d protect_against: %d",
@ -809,7 +809,7 @@ bool lock_global_read_lock(THD *thd)
waiting_for_read_lock++;
while (protect_against_global_read_lock && !thd->killed)
pthread_cond_wait(&COND_refresh, &LOCK_open);
pthread_cond_wait(&COND_refresh, &LOCK_global_read_lock);
waiting_for_read_lock--;
if (thd->killed)
{
@ -834,11 +834,11 @@ bool lock_global_read_lock(THD *thd)
void unlock_global_read_lock(THD *thd)
{
uint tmp;
pthread_mutex_lock(&LOCK_open);
pthread_mutex_lock(&LOCK_global_read_lock);
tmp= --global_read_lock;
if (thd->global_read_lock == MADE_GLOBAL_READ_LOCK_BLOCK_COMMIT)
--global_read_lock_blocks_commit;
pthread_mutex_unlock(&LOCK_open);
pthread_mutex_unlock(&LOCK_global_read_lock);
/* Send the signal outside the mutex to avoid a context switch */
if (!tmp)
pthread_cond_broadcast(&COND_refresh);
@ -857,7 +857,7 @@ bool wait_if_global_read_lock(THD *thd, bool abort_on_refresh,
DBUG_ENTER("wait_if_global_read_lock");
LINT_INIT(old_message);
(void) pthread_mutex_lock(&LOCK_open);
(void) pthread_mutex_lock(&LOCK_global_read_lock);
if ((need_exit_cond= must_wait))
{
if (thd->global_read_lock) // This thread had the read locks
@ -865,7 +865,7 @@ bool wait_if_global_read_lock(THD *thd, bool abort_on_refresh,
if (is_not_commit)
my_message(ER_CANT_UPDATE_WITH_READLOCK,
ER(ER_CANT_UPDATE_WITH_READLOCK), MYF(0));
(void) pthread_mutex_unlock(&LOCK_open);
(void) pthread_mutex_unlock(&LOCK_global_read_lock);
/*
We allow FLUSHer to COMMIT; we assume FLUSHer knows what it does.
This allowance is needed to not break existing versions of innobackup
@ -873,11 +873,11 @@ bool wait_if_global_read_lock(THD *thd, bool abort_on_refresh,
*/
DBUG_RETURN(is_not_commit);
}
old_message=thd->enter_cond(&COND_refresh, &LOCK_open,
old_message=thd->enter_cond(&COND_refresh, &LOCK_global_read_lock,
"Waiting for release of readlock");
while (must_wait && ! thd->killed &&
(!abort_on_refresh || thd->version == refresh_version))
(void) pthread_cond_wait(&COND_refresh,&LOCK_open);
(void) pthread_cond_wait(&COND_refresh,&LOCK_global_read_lock);
if (thd->killed)
result=1;
}
@ -890,7 +890,7 @@ bool wait_if_global_read_lock(THD *thd, bool abort_on_refresh,
if (unlikely(need_exit_cond))
thd->exit_cond(old_message);
else
pthread_mutex_unlock(&LOCK_open);
pthread_mutex_unlock(&LOCK_global_read_lock);
DBUG_RETURN(result);
}
@ -901,10 +901,10 @@ void start_waiting_global_read_lock(THD *thd)
DBUG_ENTER("start_waiting_global_read_lock");
if (unlikely(thd->global_read_lock))
DBUG_VOID_RETURN;
(void) pthread_mutex_lock(&LOCK_open);
(void) pthread_mutex_lock(&LOCK_global_read_lock);
tmp= (!--protect_against_global_read_lock &&
(waiting_for_read_lock || global_read_lock_blocks_commit));
(void) pthread_mutex_unlock(&LOCK_open);
(void) pthread_mutex_unlock(&LOCK_global_read_lock);
if (tmp)
pthread_cond_broadcast(&COND_refresh);
DBUG_VOID_RETURN;
@ -922,16 +922,16 @@ bool make_global_read_lock_block_commit(THD *thd)
*/
if (thd->global_read_lock != GOT_GLOBAL_READ_LOCK)
DBUG_RETURN(1);
pthread_mutex_lock(&LOCK_open);
pthread_mutex_lock(&LOCK_global_read_lock);
/* increment this BEFORE waiting on cond (otherwise race cond) */
global_read_lock_blocks_commit++;
/* For testing we set up some blocking, to see if we can be killed */
DBUG_EXECUTE_IF("make_global_read_lock_block_commit_loop",
protect_against_global_read_lock++;);
old_message= thd->enter_cond(&COND_refresh, &LOCK_open,
old_message= thd->enter_cond(&COND_refresh, &LOCK_global_read_lock,
"Waiting for all running commits to finish");
while (protect_against_global_read_lock && !thd->killed)
pthread_cond_wait(&COND_refresh, &LOCK_open);
pthread_cond_wait(&COND_refresh, &LOCK_global_read_lock);
DBUG_EXECUTE_IF("make_global_read_lock_block_commit_loop",
protect_against_global_read_lock--;);
if (error= thd->killed)