SegmentedPool.h

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00001 /*
00002 Copyright (C) 2003-2006 The Pentagram team
00003 
00004 This program is free software; you can redistribute it and/or
00005 modify it under the terms of the GNU General Public License
00006 as published by the Free Software Foundation; either version 2
00007 of the License, or (at your option) any later version.
00008 
00009 This program is distributed in the hope that it will be useful,
00010 but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 GNU General Public License for more details.
00013 
00014 You should have received a copy of the GNU General Public License
00015 along with this program; if not, write to the Free Software
00016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00017 */
00018 
00019 #ifndef SEGMENTED_POOL_H
00020 #define SEGMENTED_POOL_H
00021 
00022 #include "Pool.h"
00023 // Think about adding magic to the front of the
00024 // PoolNode to identify them.
00025 
00026 class SegmentedPool;
00027 
00028 struct SegmentedPoolNode;
00029 
00036 class SegmentedPool: public Pool
00037 {
00038 public:
00039         SegmentedPool(size_t nodeCapacity, uint32 nodes);
00040         virtual ~SegmentedPool();
00041 
00042         ENABLE_RUNTIME_CLASSTYPE();
00043 
00044         virtual void * allocate(size_t size);
00045         virtual void deallocate(void * ptr);
00046 
00047         virtual bool isFull() {return freeNodeCount == 0;}
00048         virtual bool isEmpty() {return freeNodeCount == nodes;}
00049 
00050         virtual bool inPool(void * ptr) {return (ptr > startOfPool && ptr < endOfPool);}
00051 
00052         void printInfo();
00053 
00054         size_t getNodeCapacity() {return nodeCapacity;}
00055 
00056         SegmentedPoolNode* getPoolNode(void * ptr);
00057 private:
00058         uint8 * startOfPool;
00059         uint8 * endOfPool;
00060 
00061         size_t nodeOffset;
00062         size_t nodeCapacity;
00063         uint32 nodes;
00064         uint32 freeNodeCount;
00065 
00066         SegmentedPoolNode* firstFree;
00067         SegmentedPoolNode* lastFree;
00068 };
00069 
00070 #endif

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