mirror of
https://github.com/reactos/reactos.git
synced 2024-11-04 13:52:30 +00:00
109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
/*
|
|
** License Applicability. Except to the extent portions of this file are
|
|
** made subject to an alternative license as permitted in the SGI Free
|
|
** Software License B, Version 1.1 (the "License"), the contents of this
|
|
** file are subject only to the provisions of the License. You may not use
|
|
** this file except in compliance with the License. You may obtain a copy
|
|
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
|
|
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
|
|
**
|
|
** http://oss.sgi.com/projects/FreeB
|
|
**
|
|
** Note that, as provided in the License, the Software is distributed on an
|
|
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
|
|
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
|
|
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
|
|
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
|
|
**
|
|
** Original Code. The Original Code is: OpenGL Sample Implementation,
|
|
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
|
|
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
|
|
** Copyright in any portions created by third parties is as indicated
|
|
** elsewhere herein. All Rights Reserved.
|
|
**
|
|
** Additional Notice Provisions: The application programming interfaces
|
|
** established by SGI in conjunction with the Original Code are The
|
|
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
|
|
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
|
|
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
|
|
** Window System(R) (Version 1.3), released October 19, 1998. This software
|
|
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
|
|
** published by SGI, but has not been independently verified as being
|
|
** compliant with the OpenGL(R) version 1.2.1 Specification.
|
|
*/
|
|
|
|
/*
|
|
* bufpool.c++
|
|
*
|
|
* $Date$ $Revision: 1.1 $
|
|
* $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/internals/bufpool.cc,v 1.1 2004/02/02 16:39:11 navaraf Exp $
|
|
*/
|
|
|
|
#include "glimports.h"
|
|
#include "myassert.h"
|
|
#include "bufpool.h"
|
|
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* Pool - allocate a new pool of buffers
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
Pool::Pool( int _buffersize, int initpoolsize, const char *n )
|
|
{
|
|
buffersize= (_buffersize < (int)sizeof(Buffer)) ? sizeof(Buffer) : _buffersize;
|
|
initsize = initpoolsize * buffersize;
|
|
nextsize = initsize;
|
|
name = n;
|
|
magic = is_allocated;
|
|
nextblock = 0;
|
|
curblock = 0;
|
|
freelist = 0;
|
|
nextfree = 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* ~Pool - free a pool of buffers and the pool itself
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
Pool::~Pool( void )
|
|
{
|
|
assert( (this != 0) && (magic == is_allocated) );
|
|
|
|
while( nextblock ) {
|
|
delete [] blocklist[--nextblock];
|
|
blocklist[nextblock] = 0;
|
|
}
|
|
magic = is_free;
|
|
}
|
|
|
|
|
|
void Pool::grow( void )
|
|
{
|
|
assert( (this != 0) && (magic == is_allocated) );
|
|
curblock = new char[nextsize];
|
|
blocklist[nextblock++] = curblock;
|
|
nextfree = nextsize;
|
|
nextsize *= 2;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* Pool::clear - free buffers associated with pool but keep pool
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
void
|
|
Pool::clear( void )
|
|
{
|
|
assert( (this != 0) && (magic == is_allocated) );
|
|
|
|
while( nextblock ) {
|
|
delete [] blocklist[--nextblock];
|
|
blocklist[nextblock] = 0;
|
|
}
|
|
curblock = 0;
|
|
freelist = 0;
|
|
nextfree = 0;
|
|
if( nextsize > initsize )
|
|
nextsize /= 2;
|
|
}
|