MemoryManager.hxx
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上传日期:2013-07-25
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- #ifndef MEMORYMANAGER_HXX_
- #define MEMORYMANAGER_HXX_
- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, 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.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY 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.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
-
- static const char* const MemoryManager_hxx_version =
- "";
-
- #include <cstddef>
- #include <iostream>
- #include <cstdlib>
-
- #define ALLOC_BLOCK 128
- typedef struct Header
- {
- Header* next;
- int size;
- }HEADER;
-
- class MemoryManager
- {
- public:
- /// Default constructor
- static MemoryManager* getInstance();
- static void* mynew(size_t size);
- static void* mynew(size_t size, void* p);
- //static void* mynew[](size_t size, void* p);
- static void mydelete(void* p);
- static void mydelete(void* p, void*);
- //static void mydelete[](void* p, void*);
-
- static void displayAllocList();
- static void displayFreeList();
- protected:
- MemoryManager();
- private:
- static MemoryManager* mInstance;
-
-
-
- HEADER* mAllocList;
- HEADER* mFreeList;
- bool mAvail; //if the first block is available or not.
-
-
- ///memory management functions
- void* alloc(size_t size);
- bool dealloc(void* ptr);
-
- HEADER* moreCore(int nBytes);
- HEADER* getFromFreeList(int nBlocks);
- };
-
-
- #if 0
- void* MemoryManager::mynew(size_t size)
- {
-
- MemoryManager* manager = MemoryManager::getInstance();
- void* p = manager->alloc(size);
- //void* p = alloc(size);
- cout << "in my new" << endl;
- return p;
-
-
-
- #if 0
- void* p = malloc(size);
- cout << "in my new" << endl;
- return p;
- #endif
-
-
- }
-
- void MemoryManager::mydelete(void* p)
- {
- MemoryManager* manager = MemoryManager::getInstance();
- if (p != NULL)
- {
- manager->dealloc(p);
- //dealloc(p);
- }
-
-
- #if 0
- if (p != NULL)
- {
- free (p);
- }
- #endif
- }
- #endif
- #endif