marko 4047915e81 branches/5.1: Prevent a race condition in innobase_commit() by ensuring ... that innodb_commit_concurrency>0 remains constant at run time. (Bug #42101) srv_commit_concurrency: Make this a static variable in ha_innodb.cc. innobase_commit_concurrency_validate(): Check that innodb_commit_concurrency is not changed from or to 0 at run time. This is needed, because innobase_commit() assumes that innodb_commit_concurrency>0 remains constant. Without this limitation, the checks for innodb_commit_concurrency>0 in innobase_commit() should be removed and that function would have to acquire and release commit_cond_m at least twice per invocation. Normally, innodb_commit_concurrency=0, and introducing the mutex operations would mean significant overhead. innodb_bug42101.test, innodb_bug42101-nonzero.test: Test cases. rb://123 approved by Heikki Tuuri		2009-05-14 11:04:55 +00:00
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srv0que.c	Merge r1239 from	2007-01-18 21:27:31 +00:00
srv0srv.c	branches/5.1: Prevent a race condition in innobase_commit() by ensuring	2009-05-14 11:04:55 +00:00
srv0start.c	branches/5.1:	2008-05-28 12:01:14 +00:00