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MDEV-5864 - Reduce usage of LOCK_open: TABLE_SHARE::tdc.free_tables

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Let TABLE_SHARE::tdc.free_tables, TABLE_SHARE::tdc.all_tables,
TABLE_SHARE::tdc.flushed and corresponding invariants be protected by
per-share TABLE_SHARE::tdc.LOCK_table_share instead of global LOCK_open.
This commit is contained in:
Sergey Vojtovich
2014-03-20 11:11:13 +04:00
parent 8250824a12
commit e4fde57712
16 changed files with 122 additions and 134 deletions
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4
sql/sql_test.cc
View File

@ -88,9 +88,9 @@ static void print_cached_tables(void)
puts("DB Table Version Thread Open Lock");
tdc_it.init();
mysql_mutex_lock(&LOCK_open);
while ((share= tdc_it.next()))
{
mysql_mutex_lock(&share->tdc.LOCK_table_share);
TABLE_SHARE::All_share_tables_list::Iterator it(share->tdc.all_tables);
while ((entry= it++))
{
@ -102,8 +102,8 @@ static void print_cached_tables(void)
in_use ? lock_descriptions[(int)entry->reginfo.lock_type] :
"Not in use");
}
mysql_mutex_unlock(&share->tdc.LOCK_table_share);
}
mysql_mutex_unlock(&LOCK_open);
tdc_it.deinit();
printf("\nCurrent refresh version: %ld\n", tdc_refresh_version());
fflush(stdout);