From 64ff82ecf98ceb4725f0f51c73e23d1efc2160bc Mon Sep 17 00:00:00 2001
From: Michael Bebenita <mbebenita@mozilla.com>
Date: Tue, 24 Aug 2010 21:06:56 -0700
Subject: Implemented an lock free queue based on this paper
 http://www.cs.rochester.edu/~scott/papers/1996_PODC_queues.pdf, the "lock
 free queue" we had before wasn't lock free at all.

---
 src/rt/sync/sync.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/rt/sync/sync.h')

diff --git a/src/rt/sync/sync.h b/src/rt/sync/sync.h
index 902b5661..8c9a13f0 100644
--- a/src/rt/sync/sync.h
+++ b/src/rt/sync/sync.h
@@ -4,6 +4,11 @@
 class sync {
 public:
     static void yield();
+    template <class T>
+    static bool compare_and_swap(T *address,
+        T oldValue, T newValue) {
+        return __sync_bool_compare_and_swap(address, oldValue, newValue);
+    }
 };
 
 #endif /* SYNC_H */
-- 
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