JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / heap / JITStubRoutineSet.h

diff --git a/heap/JITStubRoutineSet.h b/heap/JITStubRoutineSet.h
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+/*
+ * Copyright (C) 2012 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef JITStubRoutineSet_h
+#define JITStubRoutineSet_h
+
+#include <wtf/Platform.h>
+
+#include "JITStubRoutine.h"
+#include <wtf/FastAllocBase.h>
+#include <wtf/HashMap.h>
+#include <wtf/Vector.h>
+
+namespace JSC {
+
+class GCAwareJITStubRoutine;
+class SlotVisitor;
+
+#if ENABLE(JIT)
+
+class JITStubRoutineSet {
+    WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
+    WTF_MAKE_FAST_ALLOCATED;
+    
+public:
+    JITStubRoutineSet();
+    ~JITStubRoutineSet();
+    
+    void add(GCAwareJITStubRoutine*);
+
+    void clearMarks();
+    
+    void mark(void* candidateAddress)
+    {
+        uintptr_t address = reinterpret_cast<uintptr_t>(candidateAddress);
+        if (!JITStubRoutine::passesFilter(address))
+            return;
+        
+        markSlow(address);
+    }
+    
+    void deleteUnmarkedJettisonedStubRoutines();
+    
+    void traceMarkedStubRoutines(SlotVisitor&);
+    
+    unsigned size() const { return m_listOfRoutines.size(); }
+    GCAwareJITStubRoutine* at(unsigned i) const { return m_listOfRoutines[i]; }
+    
+private:
+    void markSlow(uintptr_t address);
+    
+    HashMap<uintptr_t, GCAwareJITStubRoutine*> m_addressToRoutineMap;
+    Vector<GCAwareJITStubRoutine*> m_listOfRoutines;
+};
+
+#else // !ENABLE(JIT)
+
+class JITStubRoutineSet {
+    WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
+    WTF_MAKE_FAST_ALLOCATED;
+    
+public:
+    JITStubRoutineSet() { }
+    ~JITStubRoutineSet() { }
+
+    void add(GCAwareJITStubRoutine*) { }
+    void clearMarks() { }
+    void mark(void*) { }
+    void deleteUnmarkedJettisonedStubRoutines() { }
+    void traceMarkedStubRoutines(SlotVisitor&) { }
+};
+
+#endif // !ENABLE(JIT)
+
+} // namespace JSC
+
+#endif // JITStubRoutineSet_h
+