1 /* $NetBSD: memalloc.h,v 1.11 2000/11/01 19:56:01 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Kenneth Almquist. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 39 */ 40 41 struct stackmark { 42 struct stack_block *stackp; 43 char *stacknxt; 44 int stacknleft; 45 struct stackmark *marknext; 46 }; 47 48 49 extern char *stacknxt; 50 extern int stacknleft; 51 extern int sstrnleft; 52 extern int herefd; 53 54 pointer ckmalloc __P((int)); 55 pointer ckrealloc __P((pointer, int)); 56 char *savestr __P((char *)); 57 pointer stalloc __P((int)); 58 void stunalloc __P((pointer)); 59 void setstackmark __P((struct stackmark *)); 60 void popstackmark __P((struct stackmark *)); 61 void growstackblock __P((void)); 62 void grabstackblock __P((int)); 63 char *growstackstr __P((void)); 64 char *makestrspace __P((void)); 65 void ungrabstackstr __P((char *, char *)); 66 67 68 69 #define stackblock() stacknxt 70 #define stackblocksize() stacknleft 71 #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 72 #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 73 #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 74 #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 75 #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 76 #define STUNPUTC(p) (++sstrnleft, --p) 77 #define STTOPC(p) p[-1] 78 #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 79 #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 80 81 #define ckfree(p) free((pointer)(p)) 82