1 files changed, 51 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/heap/IncrementalSweeper.h b/Source/JavaScriptCore/heap/IncrementalSweeper.h
new file mode 100644
index 000000000..48f040409
--- /dev/null
+++ b/Source/JavaScriptCore/heap/IncrementalSweeper.h
@@ -0,0 +1,51 @@
+#ifndef IncrementalSweeper_h
+#define IncrementalSweeper_h
+
+#include "MarkedBlock.h"
+#include <wtf/HashSet.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/RetainPtr.h>
+#include <wtf/Vector.h>
+
+#if USE(CF)
+#include <CoreFoundation/CoreFoundation.h>
+#endif
+
+namespace JSC {
+
+class Heap;
+    
+class IncrementalSweeper {
+public:
+    ~IncrementalSweeper();
+
+    static PassOwnPtr<IncrementalSweeper> create(Heap*);
+    void startSweeping(const HashSet<MarkedBlock*>& blockSnapshot);
+
+private:
+#if USE(CF)
+    IncrementalSweeper(Heap*, CFRunLoopRef);
+    
+    static void timerDidFire(CFRunLoopTimerRef, void*);
+    void doSweep(double startTime);
+    void scheduleTimer();
+    void cancelTimer();
+    
+    Heap* m_heap;
+    unsigned m_currentBlockToSweepIndex;
+    RetainPtr<CFRunLoopTimerRef> m_timer;
+    RetainPtr<CFRunLoopRef> m_runLoop;
+    CFRunLoopTimerContext m_context;
+   
+    double m_lengthOfLastSweepIncrement; 
+    Vector<MarkedBlock*> m_blocksToSweep;
+#else
+    
+    IncrementalSweeper();
+    
+#endif
+};
+
+} // namespace JSC
+
+#endif