From dfe44317a04963b57b97053a69a65e51e9a5f1e1 Mon Sep 17 00:00:00 2001
From: Jamie Reece Wilson <me@reece.sx>
Date: Sat, 9 Sep 2023 18:09:22 +0100
Subject: [PATCH] [*] SMT Yield: minor branch added to SMT Yield

---
 Source/Threading/Primitives/SMTYield.cpp | 2 ++
 Source/Threading/Primitives/SMTYield.hpp | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/Source/Threading/Primitives/SMTYield.cpp b/Source/Threading/Primitives/SMTYield.cpp
index 20e79575..79422850 100644
--- a/Source/Threading/Primitives/SMTYield.cpp
+++ b/Source/Threading/Primitives/SMTYield.cpp
@@ -81,6 +81,8 @@ namespace Aurora::Threading::Primitives
         gUseFutexRWLock = ThrdCfg::gPreferFutexRWLock &&
             IsWaitOnRecommended();
 
+        gSpinAdaptiveThreadCount = uCores;
+
         if (uCores == 1)
         {
             gSpinAdaptiveThreshold = 0;
diff --git a/Source/Threading/Primitives/SMTYield.hpp b/Source/Threading/Primitives/SMTYield.hpp
index 412c3016..19b990b0 100644
--- a/Source/Threading/Primitives/SMTYield.hpp
+++ b/Source/Threading/Primitives/SMTYield.hpp
@@ -54,6 +54,7 @@ namespace Aurora::Threading::Primitives
 
     inline AuUInt32 gSpinAdaptiveThreshold {};
     inline AuUInt32 gSpinAdaptiveCurrentCount {};
+    inline AuUInt32 gSpinAdaptiveThreadCount {};
 
     inline AuUInt32 gUseFutexRWLock {};
 
@@ -144,7 +145,7 @@ namespace Aurora::Threading::Primitives
 
                 AuAtomicSub(&gSpinAdaptiveCurrentCount, 1u);
             }
-            else
+            else if (uNow <= gSpinAdaptiveThreadCount)
             {
                 auto uCount = (spin) / 3;
             #if defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86)