1 files changed, 10 insertions, 11 deletions
diff --git a/Source/JavaScriptCore/heap/CopiedSpace.h b/Source/JavaScriptCore/heap/CopiedSpace.h
index 27011781d..530e989da 100644
--- a/Source/JavaScriptCore/heap/CopiedSpace.h
+++ b/Source/JavaScriptCore/heap/CopiedSpace.h
@@ -37,6 +37,7 @@
 #include <wtf/PageAllocationAligned.h>
 #include <wtf/PageBlock.h>
 #include <wtf/StdLibExtras.h>
+#include <wtf/TCSpinLock.h>
 #include <wtf/ThreadingPrimitives.h>
 
 namespace JSC {
@@ -76,22 +77,20 @@ public:
     static CopiedBlock* blockFor(void*);
 
 private:
-    CheckedBoolean tryAllocateSlowCase(size_t, void**);
-    CheckedBoolean addNewBlock();
-    CheckedBoolean allocateNewBlock(CopiedBlock**);
-    
     static void* allocateFromBlock(CopiedBlock*, size_t);
+    static bool isOversize(size_t);
+    static bool fitsInBlock(CopiedBlock*, size_t);
+    static CopiedBlock* oversizeBlockFor(void* ptr);
+
+    CheckedBoolean tryAllocateSlowCase(size_t, void**);
     CheckedBoolean tryAllocateOversize(size_t, void**);
     CheckedBoolean tryReallocateOversize(void**, size_t, size_t);
     
-    static bool isOversize(size_t);
-    
-    CheckedBoolean borrowBlock(CopiedBlock**);
-    CheckedBoolean getFreshBlock(AllocationEffort, CopiedBlock**);
+    void allocateBlock();
+    CopiedBlock* allocateBlockForCopyingPhase();
+
     void doneFillingBlock(CopiedBlock*);
     void recycleBlock(CopiedBlock*);
-    static bool fitsInBlock(CopiedBlock*, size_t);
-    static CopiedBlock* oversizeBlockFor(void* ptr);
 
     Heap* m_heap;
 
@@ -100,7 +99,7 @@ private:
     TinyBloomFilter m_blockFilter;
     HashSet<CopiedBlock*> m_blockSet;
 
-    Mutex m_toSpaceLock;
+    SpinLock m_toSpaceLock;
 
     DoublyLinkedList<HeapBlock>* m_toSpace;
     DoublyLinkedList<HeapBlock>* m_fromSpace;