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+/*
+** 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++
+ *
+ */
+
+#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 )
+{
+ if((unsigned)_buffersize < sizeof(Buffer))
+ buffersize = sizeof(Buffer);
+ else
+ buffersize = _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;
+}