memalloc.h revision 151795
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 * 4. Neither the name of the University nor the names of its contributors 171556Srgrimes * may be used to endorse or promote products derived from this software 181556Srgrimes * without specific prior written permission. 191556Srgrimes * 201556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301556Srgrimes * SUCH DAMAGE. 311556Srgrimes * 3217987Speter * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 3350471Speter * $FreeBSD: head/bin/sh/memalloc.h 151795 2005-10-28 10:45:19Z stefanf $ 341556Srgrimes */ 351556Srgrimes 361556Srgrimesstruct stackmark { 371556Srgrimes struct stack_block *stackp; 381556Srgrimes char *stacknxt; 391556Srgrimes int stacknleft; 4064702Scracauer struct stackmark *marknext; 411556Srgrimes}; 421556Srgrimes 431556Srgrimes 441556Srgrimesextern char *stacknxt; 451556Srgrimesextern int stacknleft; 461556Srgrimesextern int sstrnleft; 471556Srgrimesextern int herefd; 481556Srgrimes 4990111Simppointer ckmalloc(int); 5090111Simppointer ckrealloc(pointer, int); 51151795Sstefanfvoid ckfree(pointer); 5290111Simpchar *savestr(char *); 5390111Simppointer stalloc(int); 5490111Simpvoid stunalloc(pointer); 5590111Simpvoid setstackmark(struct stackmark *); 5690111Simpvoid popstackmark(struct stackmark *); 5790111Simpvoid growstackblock(void); 5890111Simpvoid grabstackblock(int); 5990111Simpchar *growstackstr(void); 6090111Simpchar *makestrspace(void); 6190111Simpvoid ungrabstackstr(char *, char *); 621556Srgrimes 631556Srgrimes 641556Srgrimes 651556Srgrimes#define stackblock() stacknxt 661556Srgrimes#define stackblocksize() stacknleft 671556Srgrimes#define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 681556Srgrimes#define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 6917987Speter#define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 701556Srgrimes#define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 711556Srgrimes#define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 721556Srgrimes#define STUNPUTC(p) (++sstrnleft, --p) 731556Srgrimes#define STTOPC(p) p[-1] 741556Srgrimes#define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 751556Srgrimes#define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 76