1 /* $NetBSD: memalloc.h,v 1.9 1995/03/21 09:09:31 cgd 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 8.1 (Berkeley) 5/31/93 39 */ 40 41 struct stackmark { 42 struct stack_block *stackp; 43 char *stacknxt; 44 int stacknleft; 45 }; 46 47 48 extern char *stacknxt; 49 extern int stacknleft; 50 extern int sstrnleft; 51 extern int herefd; 52 53 #ifdef __STDC__ 54 pointer ckmalloc(int); 55 pointer ckrealloc(pointer, int); 56 void free(pointer); /* defined in C library */ 57 char *savestr(char *); 58 pointer stalloc(int); 59 void stunalloc(pointer); 60 void setstackmark(struct stackmark *); 61 void popstackmark(struct stackmark *); 62 void growstackblock(void); 63 void grabstackblock(int); 64 char *growstackstr(void); 65 char *makestrspace(void); 66 void ungrabstackstr(char *, char *); 67 #else 68 pointer ckmalloc(); 69 pointer ckrealloc(); 70 void free(); /* defined in C library */ 71 char *savestr(); 72 pointer stalloc(); 73 void stunalloc(); 74 void setstackmark(); 75 void popstackmark(); 76 void growstackblock(); 77 void grabstackblock(); 78 char *growstackstr(); 79 char *makestrspace(); 80 void ungrabstackstr(); 81 #endif 82 83 84 85 #define stackblock() stacknxt 86 #define stackblocksize() stacknleft 87 #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 88 #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 89 #define CHECKSTRSPACE(n, p) if (sstrnleft < n) p = makestrspace(); else 90 #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 91 #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 92 #define STUNPUTC(p) (++sstrnleft, --p) 93 #define STTOPC(p) p[-1] 94 #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 95 #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 96 97 #define ckfree(p) free((pointer)(p)) 98