From b34786c4d489bea0fdcd07678780d120001c9b8e Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sat, 3 Jun 2023 02:16:52 +0300
Subject: [PATCH] Interleave calls to sp_thread_pause and sp_thread_sleep in
 yield_k, instead of doing a single pause at 0

---
 include/boost/smart_ptr/detail/yield_k.hpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/boost/smart_ptr/detail/yield_k.hpp b/include/boost/smart_ptr/detail/yield_k.hpp
index f226d86..7f6c645 100644
--- a/include/boost/smart_ptr/detail/yield_k.hpp
+++ b/include/boost/smart_ptr/detail/yield_k.hpp
@@ -32,13 +32,13 @@ inline void yield( unsigned k )
     // Experiments on Windows and Fedora 32 show that a single pause,
     // followed by an immediate sp_thread_sleep(), is best.
 
-    if( k == 0 )
+    if( k & 1 )
     {
-        boost::core::sp_thread_pause();
+        boost::core::sp_thread_sleep();
     }
     else
     {
-        boost::core::sp_thread_sleep();
+        boost::core::sp_thread_pause();
     }
 }