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From: David Xu <davidxu@FreeBSD.org>
Date: Sun, 25 Mar 2012 02:05:43 +0000 (UTC)
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Subject: svn commit: r233443 - user/davidxu/pth_objdestroy/lib/libthr/thread
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Author: davidxu
Date: Sun Mar 25 02:05:43 2012
New Revision: 233443
URL: http://svn.freebsd.org/changeset/base/233443

Log:
  Use optimistic version of THR_LOCK_RELEASE which is better
  when lock is contented.

Modified:
  user/davidxu/pth_objdestroy/lib/libthr/thread/thr_sleepq.c

Modified: user/davidxu/pth_objdestroy/lib/libthr/thread/thr_sleepq.c
==============================================================================
--- user/davidxu/pth_objdestroy/lib/libthr/thread/thr_sleepq.c	Sun Mar 25 02:03:22 2012	(r233442)
+++ user/davidxu/pth_objdestroy/lib/libthr/thread/thr_sleepq.c	Sun Mar 25 02:05:43 2012	(r233443)
@@ -90,7 +90,7 @@ _sleepq_unlock(void *wchan)
 	struct pthread *curthread = _get_curthread();
                     
 	sc = SC_LOOKUP(wchan);
-	THR_LOCK_RELEASE(curthread, &sc->sc_lock);
+	THR_LOCK_RELEASE_OPT(curthread, &sc->sc_lock);
 }
 
 struct sleepqueue *