[Qemu-devel] [6634] Properly handle pthread_cond_timedwait timing out

[malc]

Revision: 6634
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6634
Author:   malc
Date:     2009-02-21 05:48:19 +0000 (Sat, 21 Feb 2009)

Log Message:
-----------
Properly handle pthread_cond_timedwait timing out

pthread_cond_timedwait is allowed to both consume the signal and
return with the value indicating the timeout, hence predicate should
always be (re)checked before taking an action

Modified Paths:
--------------
    trunk/posix-aio-compat.c

Modified: trunk/posix-aio-compat.c
===================================================================
--- trunk/posix-aio-compat.c    2009-02-21 05:48:17 UTC (rev 6633)
+++ trunk/posix-aio-compat.c    2009-02-21 05:48:19 UTC (rev 6634)
@@ -104,7 +104,7 @@
             ret = cond_timedwait(&cond, &lock, &ts);
         }
 
-        if (ret == ETIMEDOUT)
+        if (TAILQ_EMPTY(&request_list))
             break;
 
         aiocb = TAILQ_FIRST(&request_list);