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Upgrade TL_WRITE_CONCURRENT_INSERT to TL_WRITE_LOW_PRIORITY if

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--low-priority-updates is used and the file has holes.


Docs/manual.texi:
  Changelog
sql/sql_insert.cc:
  Fixed that sleeptime is 0 for new insert delayed threads.
This commit is contained in:
unknown
2001-07-18 23:34:04 +03:00
parent 2cbf3b9b53
commit 0e66a78a4d
5 changed files with 11 additions and 5 deletions
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9
mysys/thr_lock.c
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@ -85,6 +85,7 @@ multiple read locks.
my_bool thr_lock_inited=0;
ulong locks_immediate = 0L, locks_waited = 0L;
enum thr_lock_type thr_upgraded_concurrent_insert_lock = TL_WRITE;
/* The following constants are only for debug output */
#define MAX_THREADS 100
@ -514,7 +515,7 @@ int thr_lock(THR_LOCK_DATA *data,enum thr_lock_type lock_type)
}
}
else if (lock_type == TL_WRITE_CONCURRENT_INSERT && ! lock->check_status)
data->type=lock_type= TL_WRITE; /* not supported */
data->type=lock_type= thr_upgraded_concurrent_insert_lock;
if (lock->write.data) /* If there is a write lock */
{
@ -556,7 +557,7 @@ int thr_lock(THR_LOCK_DATA *data,enum thr_lock_type lock_type)
{ /* no scheduled write locks */
if (lock_type == TL_WRITE_CONCURRENT_INSERT &&
(*lock->check_status)(data->status_param))
data->type=lock_type=TL_WRITE; /* Upgrade lock */
data->type=lock_type= thr_upgraded_concurrent_insert_lock;
if (!lock->read.data ||
(lock_type <= TL_WRITE_DELAYED &&
@ -943,10 +944,10 @@ my_bool thr_upgrade_write_delay_lock(THR_LOCK_DATA *data)
DBUG_ENTER("thr_upgrade_write_delay_lock");
pthread_mutex_lock(&lock->mutex);
if (data->type == TL_UNLOCK || data->type == TL_WRITE) /* Aborted */
if (data->type == TL_UNLOCK || data->type >= TL_WRITE_LOW_PRIORITY)
{
pthread_mutex_unlock(&lock->mutex);
DBUG_RETURN(data->type == TL_UNLOCK);
DBUG_RETURN(data->type == TL_UNLOCK); /* Test if Aborted */
}
check_locks(lock,"before upgrading lock",0);
/* TODO: Upgrade to TL_WRITE_CONCURRENT_INSERT in some cases */