X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=common%2Fsemaphore.h;h=c50394f852e488feefb1c4629a918314218c988b;hb=f3553f118beae8eb4ec9ae62ef8b7902bbe784cd;hp=1a384397e99c936ab849ed1bacac3cff5023c015;hpb=e11b7c07af9147647360cafcc85248307f270441;p=casparcg

diff --git a/common/semaphore.h b/common/semaphore.h
index 1a384397e..c50394f85 100644
--- a/common/semaphore.h
+++ b/common/semaphore.h
@@ -110,15 +110,18 @@ public:
 		boost::mutex::scoped_lock lock(mutex_);
 		auto num_acquired = 0u;
 
-		while (permits_ == 0u && num_acquired < permits)
+		while (true)
 		{
-			permits_available_.wait(lock);
-
 			auto num_wanted = permits - num_acquired;
 			auto to_drain = std::min(num_wanted, permits_);
 
 			permits_ -= to_drain;
 			num_acquired += to_drain;
+
+			if (num_acquired == permits)
+				break;
+
+			permits_available_.wait(lock);
 		}
 	}