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85 lines
2.5 KiB
85 lines
2.5 KiB
/**************************************************************************
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* *
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* Copyright (C) 1992, Silicon Graphics, Inc. *
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* *
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* These coded instructions, statements, and computer programs contain *
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* unpublished proprietary information of Silicon Graphics, Inc., and *
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* are protected by Federal copyright law. They may not be disclosed *
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* to third parties or copied or duplicated in any form, in whole or *
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* in part, without the prior written consent of Silicon Graphics, Inc. *
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* *
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**************************************************************************/
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/*
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* bufpool.c++ - $Revision: 1.4 $
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* Derrick Burns - 1991
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*/
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#include "glimport.h"
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#include "myassert.h"
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#include "bufpool.h"
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/*-----------------------------------------------------------------------------
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* Pool - allocate a new pool of buffers
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*-----------------------------------------------------------------------------
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*/
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Pool::Pool( int _buffersize, int initpoolsize, char *n )
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{
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buffersize= (_buffersize < sizeof(Buffer)) ? sizeof(Buffer) : _buffersize;
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initsize = initpoolsize * buffersize;
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nextsize = initsize;
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name = n;
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magic = is_allocated;
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nextblock = 0;
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curblock = 0;
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freelist = 0;
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nextfree = 0;
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}
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/*-----------------------------------------------------------------------------
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* ~Pool - free a pool of buffers and the pool itself
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*-----------------------------------------------------------------------------
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*/
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Pool::~Pool( void )
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{
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assert( (this != 0) && (magic == is_allocated) );
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while( nextblock ) {
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delete blocklist[--nextblock];
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blocklist[nextblock] = 0;
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}
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magic = is_free;
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}
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void Pool::grow( void )
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{
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assert( (this != 0) && (magic == is_allocated) );
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curblock = new char[nextsize];
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blocklist[nextblock++] = curblock;
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nextfree = nextsize;
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nextsize *= 2;
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}
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/*-----------------------------------------------------------------------------
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* Pool::clear - free buffers associated with pool but keep pool
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*-----------------------------------------------------------------------------
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*/
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void
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Pool::clear( void )
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{
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assert( (this != 0) && (magic == is_allocated) );
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while( nextblock ) {
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delete blocklist[--nextblock];
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blocklist[nextblock] = 0;
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}
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curblock = 0;
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freelist = 0;
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nextfree = 0;
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if( nextsize > initsize )
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nextsize /= 2;
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}
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