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# csutil/mempool.h

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    00001 /*
    00002     Copyright (C) 2005 by Eric Sunshine <sunshine@sunshineco.com>
    00003
    00004     This library is free software; you can redistribute it and/or
    00005     modify it under the terms of the GNU Library General Public
    00006     License as published by the Free Software Foundation; either
    00007     version 2 of the License, or (at your option) any later version.
    00008
    00009     This library 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 GNU
    00012     Library General Public License for more details.
    00013
    00014     You should have received a copy of the GNU Library General Public
    00015     License along with this library; if not, write to the Free
    00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00017 */
    00018
    00019 #ifndef __CS_CSUTIL_MEMPOOL_H__
    00020 #define __CS_CSUTIL_MEMPOOL_H__
    00021
    00026 #include "cssysdef.h"
    00027 #include "csextern.h"
    00028 #include "csutil/array.h"
    00029
    00030 // Hack: Work around problems caused by #defining 'new'.
    00031 #if defined(CS_EXTENSIVE_MEMDEBUG) || defined(CS_MEMORY_TRACKER)
    00032 # undef new
    00033 #endif
    00034 #include <new>
    00035
    00058 class CS_CRYSTALSPACE_EXPORT csMemoryPool
    00059 {
    00060 private:
    00062   csArray<uint8*> blocks;
    00064   size_t remaining;
    00066   size_t granularity;
    00067
    00068   csMemoryPool(csMemoryPool const&);   // Illegal; unimplemented.
    00069   void operator=(csMemoryPool const&); // Illegal; unimplemented.
    00070
    00071 public:
    00083   csMemoryPool(size_t gran = 4096) : remaining(0), granularity(gran) {}
    00085   ~csMemoryPool() { Empty(); }
    00086
    00095   void* Alloc(size_t);
    00101   void Empty();
    00107   void const* Store(void const*, size_t);
    00114   char const* Store(char const*);
    00115 };
    00116
    00136 inline void* operator new(size_t n, csMemoryPool& p)
    00137 { return p.Alloc(n); }
    00138 inline void* operator new(size_t n, csMemoryPool* p)
    00139 { return p->Alloc(n); }
    00144 #endif //  __CS_CSUTIL_MEMPOOL_H__