1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Kenneth Almquist. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 33 * $FreeBSD$ 34 */ 35 36 struct stackmark { 37 struct stack_block *stackp; 38 char *stacknxt; 39 int stacknleft; 40 struct stackmark *marknext; 41 }; 42 43 44 extern char *stacknxt; 45 extern int stacknleft; 46 extern int sstrnleft; 47 extern int herefd; 48 49 pointer ckmalloc(int); 50 pointer ckrealloc(pointer, int); 51 void ckfree(pointer); 52 char *savestr(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