bk commit into 5.1 tree (dkatz:1.2563) BUG#30091

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ChangeSet@1.2563, 2007-07-31 19:58:18-04:00, dkatz@damien-katzs-computer.local +1 -0   Bug #30091 Deadlock in mysql-test-run during bootstrap on Windows with '--debug'

  sql/sql_cache.cc@1.118, 2007-07-31 19:58:09-04:00, dkatz@damien-katzs-computer.local +2 -2     Moved the debug check_integrity call to after the cache state is set back to NO_FLUSH_IN_PROGRESS. This was hanging because the check_integrity call can only proceed when the flush is completed, but we were performing the check during a flush.

diff -Nrup a/sql/sql_cache.cc b/sql/sql_cache.cc
--- a/sql/sql_cache.cc 2007-07-16 14:34:33 -04:00
+++ b/sql/sql_cache.cc 2007-07-31 19:58:09 -04:00 @@ -878,12 +878,12 @@ ulong Query_cache::resize(ulong query_ca

   query_cache_size= query_cache_size_arg;    ulong new_query_cache_size= init_cache();  

• DBUG_EXECUTE("check_querycache",check_integrity(0););
  -
  STRUCT_LOCK(&structure_guard_mutex); m_cache_status= Query_cache::NO_FLUSH_IN_PROGRESS; pthread_cond_signal(&COND_cache_status_changed); STRUCT_UNLOCK(&structure_guard_mutex); + + DBUG_EXECUTE("check_querycache",check_integrity(0););

   DBUG_RETURN(new_query_cache_size);
 }

--

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