memalloc.h revision 17987
1198090Srdivacky/*- 2198090Srdivacky * Copyright (c) 1991, 1993 3198090Srdivacky * The Regents of the University of California. All rights reserved. 4198090Srdivacky * 5198090Srdivacky * This code is derived from software contributed to Berkeley by 6198090Srdivacky * Kenneth Almquist. 7198090Srdivacky * 8198090Srdivacky * Redistribution and use in source and binary forms, with or without 9198090Srdivacky * modification, are permitted provided that the following conditions 10198090Srdivacky * are met: 11198090Srdivacky * 1. Redistributions of source code must retain the above copyright 12198090Srdivacky * notice, this list of conditions and the following disclaimer. 13198090Srdivacky * 2. Redistributions in binary form must reproduce the above copyright 14198090Srdivacky * notice, this list of conditions and the following disclaimer in the 15198090Srdivacky * documentation and/or other materials provided with the distribution. 16198090Srdivacky * 3. All advertising materials mentioning features or use of this software 17198090Srdivacky * must display the following acknowledgement: 18198090Srdivacky * This product includes software developed by the University of 19198090Srdivacky * California, Berkeley and its contributors. 20198090Srdivacky * 4. Neither the name of the University nor the names of its contributors 21205218Srdivacky * may be used to endorse or promote products derived from this software 22198090Srdivacky * without specific prior written permission. 23198090Srdivacky * 24198090Srdivacky * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25198090Srdivacky * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26198090Srdivacky * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27198090Srdivacky * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28198090Srdivacky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29198090Srdivacky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30198090Srdivacky * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31198090Srdivacky * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32198090Srdivacky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33198090Srdivacky * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34198090Srdivacky * SUCH DAMAGE. 35198090Srdivacky * 36198090Srdivacky * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 37198090Srdivacky * $Id: memalloc.h,v 1.2 1994/09/24 02:57:51 davidg Exp $ 38203954Srdivacky */ 39198090Srdivacky 40198090Srdivackystruct stackmark { 41198090Srdivacky struct stack_block *stackp; 42198090Srdivacky char *stacknxt; 43198090Srdivacky int stacknleft; 44198090Srdivacky}; 45198090Srdivacky 46205218Srdivacky 47205218Srdivackyextern char *stacknxt; 48205218Srdivackyextern int stacknleft; 49203954Srdivackyextern int sstrnleft; 50203954Srdivackyextern int herefd; 51203954Srdivacky 52198090Srdivackypointer ckmalloc __P((int)); 53198090Srdivackypointer ckrealloc __P((pointer, int)); 54198090Srdivackychar *savestr __P((char *)); 55198090Srdivackypointer stalloc __P((int)); 56203954Srdivackyvoid stunalloc __P((pointer)); 57198090Srdivackyvoid setstackmark __P((struct stackmark *)); 58198090Srdivackyvoid popstackmark __P((struct stackmark *)); 59198090Srdivackyvoid growstackblock __P((void)); 60198090Srdivackyvoid grabstackblock __P((int)); 61203954Srdivackychar *growstackstr __P((void)); 62203954Srdivackychar *makestrspace __P((void)); 63198090Srdivackyvoid ungrabstackstr __P((char *, char *)); 64198090Srdivacky 65198090Srdivacky 66198090Srdivacky 67198090Srdivacky#define stackblock() stacknxt 68198090Srdivacky#define stackblocksize() stacknleft 69198090Srdivacky#define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 70198090Srdivacky#define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 71198090Srdivacky#define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 72198090Srdivacky#define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 73198090Srdivacky#define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 74203954Srdivacky#define STUNPUTC(p) (++sstrnleft, --p) 75203954Srdivacky#define STTOPC(p) p[-1] 76203954Srdivacky#define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 77198090Srdivacky#define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 78198090Srdivacky 79198090Srdivacky#define ckfree(p) free((pointer)(p)) 80198090Srdivacky