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diff --git a/Source/JavaScriptCore/tools/CodeProfile.h b/Source/JavaScriptCore/tools/CodeProfile.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 CodeProfile_h
+#define CodeProfile_h
+
+#include "SourceCode.h"
+#include "TieredMMapArray.h"
+#include <wtf/text/CString.h>
+
+namespace JSC {
+
+class CodeProfile {
+public:
+    CodeProfile(const SourceCode& source, CodeProfile* parent)
+        : m_file(source.provider()->url().utf8())
+        , m_lineNo(source.firstLine())
+        , m_parent(parent)
+    {
+        if (parent)
+            parent->addChild(this);
+    }
+
+    void sample(void* pc, void** framePointer);
+    void report();
+
+    CodeProfile* parent()
+    {
+        return m_parent;
+    }
+    
+    void addChild(CodeProfile* child)
+    {
+        m_children.append(adoptPtr(child));
+    }
+
+private:
+    enum CodeType {
+        EngineCode,
+        GlobalThunk,
+        RegExpCode,
+        DFGJIT,
+        BaselineOnly,
+        BaselineProfile,
+        BaselineOSR,
+        EngineFrame,
+        NumberOfCodeTypes
+    };
+    struct CodeRecord {
+        CodeRecord(void* pc, CodeType type)
+            : pc(pc)
+            , type(type)
+        {
+        }
+        void* pc;
+        CodeType type;
+    };
+
+    CString m_file;
+    unsigned m_lineNo;
+    CodeProfile* m_parent;
+    Vector< OwnPtr<CodeProfile> > m_children;
+    TieredMMapArray<CodeRecord> m_samples;
+
+    static const char* s_codeTypeNames[NumberOfCodeTypes];
+};
+
+}
+
+#endif // CodeProfile_h
+