--- ray/src/common/bmalloc.c 1992/03/10 15:32:00 2.2 +++ ray/src/common/bmalloc.c 2003/02/22 02:07:21 2.3 @@ -1,44 +1,98 @@ -/* Copyright (c) 1991 Regents of the University of California */ - #ifndef lint -static char SCCSid[] = "$SunId$ LBL"; +static const char RCSid[] = "$Id: bmalloc.c,v 2.3 2003/02/22 02:07:21 greg Exp $"; #endif - /* * Bmalloc provides basic memory allocation without overhead (no free lists). * Use only to take the load off of malloc for all those * piddling little requests that you never expect to free. * Bmalloc defers to malloc for big requests. * Bfree should hand memory to bmalloc, but it usually fails here. + * + * External symbols declared in standard.h */ -#define NULL 0 +/* ==================================================================== + * The Radiance Software License, Version 1.0 + * + * Copyright (c) 1990 - 2002 The Regents of the University of California, + * through Lawrence Berkeley National Laboratory. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The end-user documentation included with the redistribution, + * if any, must include the following acknowledgment: + * "This product includes Radiance software + * (http://radsite.lbl.gov/) + * developed by the Lawrence Berkeley National Laboratory + * (http://www.lbl.gov/)." + * Alternately, this acknowledgment may appear in the software itself, + * if and wherever such third-party acknowledgments normally appear. + * + * 4. The names "Radiance," "Lawrence Berkeley National Laboratory" + * and "The Regents of the University of California" must + * not be used to endorse or promote products derived from this + * software without prior written permission. For written + * permission, please contact radiance@radsite.lbl.gov. + * + * 5. Products derived from this software may not be called "Radiance", + * nor may "Radiance" appear in their name, without prior written + * permission of Lawrence Berkeley National Laboratory. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * ==================================================================== + * + * This software consists of voluntary contributions made by many + * individuals on behalf of Lawrence Berkeley National Laboratory. For more + * information on Lawrence Berkeley National Laboratory, please see + * . + */ +#include + #ifndef MBLKSIZ #define MBLKSIZ 16376 /* size of memory allocation block */ #endif #define WASTEFRAC 12 /* don't waste more than a fraction */ -#ifndef ALIGN -#define ALIGN int /* type for alignment */ +#ifndef ALIGNT +#define ALIGNT double /* type for alignment */ #endif -#define BYTES_WORD sizeof(ALIGN) +#define BYTES_WORD sizeof(ALIGNT) -extern char *malloc(); - static char *bposition = NULL; -static unsigned nremain = 0; +static unsigned int nremain = 0; char * bmalloc(n) /* allocate a block of n bytes */ -register unsigned n; +register unsigned int n; { if (n > nremain && (n > MBLKSIZ || nremain > MBLKSIZ/WASTEFRAC)) return(malloc(n)); /* too big */ n = (n+(BYTES_WORD-1))&~(BYTES_WORD-1); /* word align */ - if (n > nremain && (bposition = malloc(nremain = MBLKSIZ)) == NULL) { + if (n > nremain && (bposition = (char *)malloc(nremain = MBLKSIZ)) == NULL) { nremain = 0; return(NULL); } @@ -48,13 +102,14 @@ register unsigned n; } +void bfree(p, n) /* free random memory */ register char *p; -register unsigned n; +register unsigned int n; { - register unsigned bsiz; + register unsigned int bsiz; /* check alignment */ - bsiz = BYTES_WORD - ((unsigned)p&(BYTES_WORD-1)); + bsiz = BYTES_WORD - ((unsigned int)p&(BYTES_WORD-1)); if (bsiz < BYTES_WORD) { p += bsiz; n -= bsiz;