1 /* $NetBSD: memalloc.h,v 1.14 2003/08/07 09:05:34 agc 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 35 */ 36 37 struct stackmark { 38 struct stack_block *stackp; 39 char *stacknxt; 40 int stacknleft; 41 struct stackmark *marknext; 42 }; 43 44 45 extern char *stacknxt; 46 extern int stacknleft; 47 extern int sstrnleft; 48 extern int herefd; 49 50 pointer ckmalloc(int); 51 pointer ckrealloc(pointer, int); 52 char *savestr(const char *); 53 pointer stalloc(int); 54 void stunalloc(pointer); 55 void setstackmark(struct stackmark *); 56 void popstackmark(struct stackmark *); 57 void growstackblock(void); 58 void grabstackblock(int); 59 char *growstackstr(void); 60 char *makestrspace(void); 61 void ungrabstackstr(char *, char *); 62 63 64 65 #define stackblock() stacknxt 66 #define stackblocksize() stacknleft 67 #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 68 #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 69 #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 70 #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 71 #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 72 #define STUNPUTC(p) (++sstrnleft, --p) 73 #define STTOPC(p) p[-1] 74 #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 75 #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 76 77 #define ckfree(p) free((pointer)(p)) 78