UT/UT_SmallObjectAllocator.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Mark Elendt
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        UT_SmallObjectAllocator.h ( UT Library, C++)
 *
 * COMMENTS:    Small object allocator.
 */

#ifndef __UT_SmallObjectAllocator__
#define __UT_SmallObjectAllocator__

#include "UT_API.h"
#include "UT_PtrArray.h"
#include "UT_Lock.h"

class UT_FixedAllocator;

class UT_API UT_SmallObjectAllocator
{
public:
                 UT_SmallObjectAllocator(bool cleanPages,
                                         int pageSize,
                                         size_t maxObjectSize,
                                         bool threadSafe);
                ~UT_SmallObjectAllocator();

    void        *allocate(size_t numBytes);
    void         deallocate(void *p, size_t size);

private:
    UT_FixedAllocator   *findAllocator(size_t size);

private:
    UT_PtrArray<UT_FixedAllocator *>     myPool;
    UT_FixedAllocator                   *myLastAlloc;
    UT_Lock                              myLock;
    size_t                               myPageSize;
    size_t                               myMaxObjectSize;
    bool                                 myCleanPages;
};

#endif

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