From c166cb72f1676855816340666c3b618beef4b976 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 2 Nov 2012 15:43:21 +0100
Subject: semaphore: implement fallback counting semaphores with mutex+condvar

OpenBSD and Darwin do not have sem_timedwait.  Implement a fallback
for them.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 qemu-thread-posix.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'qemu-thread-posix.h')

diff --git a/qemu-thread-posix.h b/qemu-thread-posix.h
index 2542c15200..380bae209b 100644
--- a/qemu-thread-posix.h
+++ b/qemu-thread-posix.h
@@ -12,7 +12,13 @@ struct QemuCond {
 };
 
 struct QemuSemaphore {
+#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__NetBSD__)
+    pthread_mutex_t lock;
+    pthread_cond_t cond;
+    int count;
+#else
     sem_t sem;
+#endif
 };
 
 struct QemuThread {
-- 
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