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authorOri Bernstein <ori@eigenstate.org>2015-09-16 19:07:32 -0700
committerOri Bernstein <ori@eigenstate.org>2015-09-16 19:08:06 -0700
commit95ba2c2257e56e80fe01cfcce5b533e4b4e54e7b (patch)
treeed72d6cba0928163786e59d75c3520cb6bb8b4a2 /lib/thread
parentd3091cbc968337bdd47efe3bab7e752972cad726 (diff)
downloadmc-95ba2c2257e56e80fe01cfcce5b533e4b4e54e7b.tar.gz
Unbreak mutex.
Diffstat (limited to 'lib/thread')
-rw-r--r--lib/thread/mutex+linux.myr5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/thread/mutex+linux.myr b/lib/thread/mutex+linux.myr
index 71c7301..61350b8 100644
--- a/lib/thread/mutex+linux.myr
+++ b/lib/thread/mutex+linux.myr
@@ -63,7 +63,9 @@ const mtxunlock = {mtx
are uncontended by the xchg() call, then it's safe to simply return;
nobody was waiting for us.
*/
- if mtx._state != Contended && xchg(&mtx._state, Unlocked) == Locked
+ if mtx._state == Contended
+ mtx._state = Unlocked
+ elif xchg(&mtx._state, Unlocked) == Locked
->
;;
@@ -74,7 +76,6 @@ const mtxunlock = {mtx
so that if there are still waiters, the thread that took the lock takes
responsibility for unlocking.
*/
- mtx._state = Unlocked
for var i = 0; i < nspin; i++
if mtx._state != Unlocked
/*