From eccded45c20937e6764c87761f8cd29ed9943a7d Mon Sep 17 00:00:00 2001
From: mutouyun <mark.lonr@tom.com>
Date: Wed, 12 Dec 2018 09:54:08 +0800
Subject: [PATCH] add thread_fence

---
 include/rw_lock.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/rw_lock.h b/include/rw_lock.h
index 6c66f58..ca0b4f0 100644
--- a/include/rw_lock.h
+++ b/include/rw_lock.h
@@ -23,6 +23,7 @@ public:
                 break;
             }
             std::this_thread::yield();
+            std::atomic_thread_fence(std::memory_order_acquire);
         }
     }