From 0077a0166756bf0cdd1193b0d66f8306ed909eb9 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Tue, 7 Apr 2020 12:36:44 -0700
Subject: Don't yield the CPU when waiting for updates to finish

---
 alc/alc.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'alc')

diff --git a/alc/alc.cpp b/alc/alc.cpp
index 8d40e784..bd88023b 100644
--- a/alc/alc.cpp
+++ b/alc/alc.cpp
@@ -1627,8 +1627,9 @@ void ALCcontext::processUpdates()
          * updating to finish, before providing updates.
          */
         mHoldUpdates.store(true, std::memory_order_release);
-        while((mUpdateCount.load(std::memory_order_acquire)&1) != 0)
-            std::this_thread::yield();
+        while((mUpdateCount.load(std::memory_order_acquire)&1) != 0) {
+            /* busy-wait */
+        }
 
         if(!mPropsClean.test_and_set(std::memory_order_acq_rel))
             UpdateContextProps(this);
-- 
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