memalloc.h revision 17987
11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1991, 1993 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * This code is derived from software contributed to Berkeley by 61556Srgrimes * Kenneth Almquist. 71556Srgrimes * 81556Srgrimes * Redistribution and use in source and binary forms, with or without 91556Srgrimes * modification, are permitted provided that the following conditions 101556Srgrimes * are met: 111556Srgrimes * 1. Redistributions of source code must retain the above copyright 121556Srgrimes * notice, this list of conditions and the following disclaimer. 131556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141556Srgrimes * notice, this list of conditions and the following disclaimer in the 151556Srgrimes * documentation and/or other materials provided with the distribution. 161556Srgrimes * 3. All advertising materials mentioning features or use of this software 171556Srgrimes * must display the following acknowledgement: 181556Srgrimes * This product includes software developed by the University of 191556Srgrimes * California, Berkeley and its contributors. 201556Srgrimes * 4. Neither the name of the University nor the names of its contributors 211556Srgrimes * may be used to endorse or promote products derived from this software 221556Srgrimes * without specific prior written permission. 231556Srgrimes * 241556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341556Srgrimes * SUCH DAMAGE. 351556Srgrimes * 3617987Speter * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 3717987Speter * $Id: memalloc.h,v 1.2 1994/09/24 02:57:51 davidg Exp $ 381556Srgrimes */ 391556Srgrimes 401556Srgrimesstruct stackmark { 411556Srgrimes struct stack_block *stackp; 421556Srgrimes char *stacknxt; 431556Srgrimes int stacknleft; 441556Srgrimes}; 451556Srgrimes 461556Srgrimes 471556Srgrimesextern char *stacknxt; 481556Srgrimesextern int stacknleft; 491556Srgrimesextern int sstrnleft; 501556Srgrimesextern int herefd; 511556Srgrimes 5217987Speterpointer ckmalloc __P((int)); 5317987Speterpointer ckrealloc __P((pointer, int)); 5417987Speterchar *savestr __P((char *)); 5517987Speterpointer stalloc __P((int)); 5617987Spetervoid stunalloc __P((pointer)); 5717987Spetervoid setstackmark __P((struct stackmark *)); 5817987Spetervoid popstackmark __P((struct stackmark *)); 5917987Spetervoid growstackblock __P((void)); 6017987Spetervoid grabstackblock __P((int)); 6117987Speterchar *growstackstr __P((void)); 6217987Speterchar *makestrspace __P((void)); 6317987Spetervoid ungrabstackstr __P((char *, char *)); 641556Srgrimes 651556Srgrimes 661556Srgrimes 671556Srgrimes#define stackblock() stacknxt 681556Srgrimes#define stackblocksize() stacknleft 691556Srgrimes#define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 701556Srgrimes#define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 7117987Speter#define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 721556Srgrimes#define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 731556Srgrimes#define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 741556Srgrimes#define STUNPUTC(p) (++sstrnleft, --p) 751556Srgrimes#define STTOPC(p) p[-1] 761556Srgrimes#define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 771556Srgrimes#define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 781556Srgrimes 791556Srgrimes#define ckfree(p) free((pointer)(p)) 80