92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
/*
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* Copyright (C) 2014 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef Interpreter_h
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#define Interpreter_h
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#include <condition_variable>
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#include <mutex>
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#include <thread>
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#include <vector>
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class Interpreter {
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public:
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Interpreter(const char* fileName, bool shouldFreeAllObjects = true, bool useThreadId = false);
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~Interpreter();
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void run();
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void detailedReport();
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private:
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typedef unsigned short ThreadId; // 0 is the main thread
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typedef unsigned short Log2Alignment; // log2(alignment) or ~0 for non power of 2.
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enum Opcode { op_malloc, op_free, op_realloc, op_align_malloc };
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struct Op { Opcode opcode; ThreadId threadId; Log2Alignment alignLog2; size_t slot; size_t size; };
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struct Record { void* object; size_t size; };
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class Thread
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{
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public:
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Thread(Interpreter*, ThreadId);
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~Thread();
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void runThread();
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void waitToRun();
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void switchTo();
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void stop();
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bool isMainThread() { return m_threadId == 0; }
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private:
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ThreadId m_threadId;
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Interpreter* m_myInterpreter;
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std::condition_variable m_shouldRun;
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std::thread m_thread;
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};
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bool readOps();
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void doOnSameThread(ThreadId);
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void switchToThread(ThreadId);
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void doMallocOp(Op, ThreadId);
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bool m_shouldFreeAllObjects;
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bool m_useThreadId;
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int m_fd;
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size_t m_opCount;
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size_t m_remaining;
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size_t m_opsCursor;
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size_t m_opsInBuffer;
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ThreadId m_currentThreadId;
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std::vector<Op> m_ops;
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std::mutex m_threadMutex;
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std::condition_variable m_shouldRun;
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std::vector<Thread*> m_threads;
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std::vector<Record> m_objects;
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};
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#endif // Interpreter_h
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