From 8c8bcc5d1737002a9d153105c16b262d2e201efa Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Tue, 19 Oct 2004 13:24:40 +0000
Subject: Semaphore speedups - alpha, but passes testsuite

---
 sem_timedwait.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'sem_timedwait.c')

diff --git a/sem_timedwait.c b/sem_timedwait.c
index e374006..e7fa55c 100644
--- a/sem_timedwait.c
+++ b/sem_timedwait.c
@@ -189,7 +189,15 @@ sem_timedwait (sem_t * sem, const struct timespec *abstime)
 
 #else /* NEED_SEM */
 
-      result = (pthreadCancelableTimedWait ((*sem)->sem, milliseconds));
+      if (InterlockedDecrement((LPLONG) &(*sem)->value) < 0)
+        {
+          /* Must wait */
+	  result = pthreadCancelableTimedWait ((*sem)->sem, milliseconds);
+	  if (result != 0)
+	    {
+              (void) InterlockedIncrement((LPLONG) &(*sem)->value);
+	    }
+        }
 
 #endif
 
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