--- /dev/null
+++ libmalloc/libmalloc-374.40.6/tests/MallocBenchTest/MALLOC_BENCH/MallocBench/Interpreter.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2014 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 Interpreter_h
+#define Interpreter_h
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+class Interpreter {
+public:
+    Interpreter(const char* fileName, bool shouldFreeAllObjects = true, bool useThreadId = false);
+    ~Interpreter();
+
+    void run();
+    void detailedReport();
+
+private:
+    typedef unsigned short ThreadId; // 0 is the main thread
+    typedef unsigned short Log2Alignment; // log2(alignment) or ~0 for non power of 2.
+    enum Opcode { op_malloc, op_free, op_realloc, op_align_malloc };
+    struct Op { Opcode opcode; ThreadId threadId; Log2Alignment alignLog2; size_t slot; size_t size; };
+    struct Record { void* object; size_t size; };
+
+    class Thread
+    {
+    public:
+        Thread(Interpreter*, ThreadId);
+        ~Thread();
+
+        void runThread();
+
+        void waitToRun();
+        void switchTo();
+        void stop();
+        
+        bool isMainThread() { return m_threadId == 0; }
+
+    private:
+        ThreadId m_threadId;
+        Interpreter* m_myInterpreter;
+        std::condition_variable m_shouldRun;
+        std::thread m_thread;
+    };
+
+    bool readOps();
+    void doOnSameThread(ThreadId);
+    void switchToThread(ThreadId);
+
+    void doMallocOp(Op, ThreadId);
+    
+    bool m_shouldFreeAllObjects;
+    bool m_useThreadId;
+    int m_fd;
+    size_t m_opCount;
+    size_t m_remaining;
+    size_t m_opsCursor;
+    size_t m_opsInBuffer;
+    ThreadId m_currentThreadId;
+    std::vector<Op> m_ops;
+    std::mutex m_threadMutex;
+    std::condition_variable m_shouldRun;
+    std::vector<Thread*> m_threads;
+    std::vector<Record> m_objects;
+};
+
+#endif // Interpreter_h