From ec10c033a7f6ba4819b7a65eb31eba432028f28a Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 6 Aug 2015 01:44:03 +0000
Subject: ruby_atomic.h: atomic VALUE operations

* ruby_atomic.h (ATOMIC_VALUE_EXCHANGE, ATOMIC_VALUE_CAS): add
  atomic operations for VALUE.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51498 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 node.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'node.c')

diff --git a/node.c b/node.c
index 7551a811c8..84e7bddf34 100644
--- a/node.c
+++ b/node.c
@@ -1090,11 +1090,9 @@ rb_alloc_tmp_buffer(volatile VALUE *store, long len)
 void
 rb_free_tmp_buffer(volatile VALUE *store)
 {
-    VALUE s = *store;
-    *store = 0;
+    VALUE s = ATOMIC_VALUE_EXCHANGE(*store, 0);
     if (s) {
-	void *ptr = RNODE(s)->u1.node;
-	RNODE(s)->u1.node = 0;
+	void *ptr = ATOMIC_PTR_EXCHANGE(RNODE(s)->u1.node, 0);
 	RNODE(s)->u3.cnt = 0;
 	xfree(ptr);
     }
-- 
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