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buffers.h

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/*
 * buffers.h
 *
 * Turbo Vision - Version 2.0
 *
 * Copyright (c) 1994 by Borland International
 * All Rights Reserved.
 *
 * Modified by Sergio Sigala <sergio@sigala.it>
 */

#if defined( Uses_TVMemMgr ) && !defined( __TVMemMgr )
#define __TVMemMgr

const int DEFAULT_SAFETY_POOL_SIZE = 4096;

class TBufListEntry
{
private:
    TBufListEntry( void*& );
    ~TBufListEntry();
    void *operator new( size_t, size_t );
    void *operator new( size_t sz );
    void operator delete( void * );
    TBufListEntry *next;
    TBufListEntry *prev;
    void*& owner;
    static TBufListEntry *bufList;
    static Boolean freeHead();
    friend class TVMemMgr;
    friend void *operator new( size_t );
    friend void * allocBlock( size_t );
};

class TVMemMgr
{
public:
    TVMemMgr();
    static void resizeSafetyPool( size_t sz = DEFAULT_SAFETY_POOL_SIZE );
    static int safetyPoolExhausted();
#ifndef __UNPATCHED

    static void clearSafetyPool();
#endif

    static void allocateDiscardable( void *&adr, size_t sz );
    static void freeDiscardable( void * );
#ifndef __UNPATCHED

    static void suspend(void);
#endif
private:
    static void * safetyPool;
    static size_t safetyPoolSize;
    static int inited;
    static int initMemMgr();
};

#endif  // Uses_TVMemMgr

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