1 /* $NetBSD: memalloc.h,v 1.20 2021/10/26 10:07:20 kre 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 int sstrnleft; 42 struct stackmark *marknext; 43 }; 44 45 46 extern char *stacknxt; 47 extern int stacknleft; 48 extern int sstrnleft; 49 extern int herefd; 50 51 pointer ckmalloc(size_t); 52 pointer ckrealloc(pointer, int); 53 char *savestr(const char *); 54 pointer stalloc(int); 55 void stunalloc(pointer); 56 void setstackmark(struct stackmark *); 57 void popstackmark(struct stackmark *); 58 void rststackmark(struct stackmark *); 59 void growstackblock(void); 60 void grabstackblock(int); 61 char *growstackstr(void); 62 char *makestrspace(void); 63 void ungrabstackstr(char *, char *); 64 65 char *ststrcat(size_t *, ...); 66 #define STSTRC_END ((const char *)0) 67 68 69 70 #define stackblock() stacknxt 71 #define stackblocksize() stacknleft 72 #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 73 #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 74 #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 75 #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 76 #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), sstrnleft++, *p = '\0') : (*p = '\0')) 77 #define STUNPUTC(p) (++sstrnleft, --p) 78 #define STTOPC(p) p[-1] 79 #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 80 #define grabstackstr(p) stalloc((p) - stackblock()) 81 82 #define ckfree(p) free((pointer)(p)) 83