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//===-- MemoryManager.h -----------------------------------------*- C++ -*-===//
//
//                     The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef KLEE_MEMORYMANAGER_H
#define KLEE_MEMORYMANAGER_H

#include <set>
#include <stdint.h>

namespace llvm {
  class Value;
}

namespace klee {
  class MemoryObject;
  class ArrayCache;

  class MemoryManager {
  private:
    typedef std::set<MemoryObject*> objects_ty;
    objects_ty objects;
    ArrayCache *const arrayCache;

    char *deterministicSpace;
    char *nextFreeSlot;
    size_t spaceSize;

  public:
    MemoryManager(ArrayCache *arrayCache);
    ~MemoryManager();

    /**
     * Returns memory object which contains a handle to real virtual process
     * memory.
     */
    MemoryObject *allocate(uint64_t size, bool isLocal, bool isGlobal,
                           const llvm::Value *allocSite, size_t alignment = 8);
    MemoryObject *allocateFixed(uint64_t address, uint64_t size,
                                const llvm::Value *allocSite);
    void deallocate(const MemoryObject *mo);
    void markFreed(MemoryObject *mo);
    ArrayCache *getArrayCache() const { return arrayCache; }

    /*
     * Returns the size used by deterministic allocation in bytes
     */
    size_t getUsedDeterministicSize();
  };

} // End klee namespace

#endif