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 #include <string.h> 37 38 struct stackmark { 39 struct stack_block *stackp; 40 char *stacknxt; 41 int stacknleft; 42 struct stackmark *marknext; 43 }; 44 45 46 extern char *stacknxt; 47 extern int stacknleft; 48 extern int sstrnleft; 49 50 pointer ckmalloc(size_t); 51 pointer ckrealloc(pointer, int); 52 void ckfree(pointer); 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 growstackblock(void); 59 void grabstackblock(int); 60 char *growstackstr(void); 61 char *makestrspace(void); 62 void ungrabstackstr(char *, char *); 63 char *stputbin(const char *data, int len, char *p); 64 char *stputs(const char *data, char *p); 65 66 67 68 #define stackblock() stacknxt 69 #define stackblocksize() stacknleft 70 #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 71 #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), --sstrnleft, *p++ = (c))) 72 #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 73 #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 74 /* 75 * STACKSTRNUL's use is where we want to be able to turn a stack 76 * (non-sentinel, character counting string) into a C string, 77 * and later pretend the NUL is not there. 78 * Note: Because of STACKSTRNUL's semantics, STACKSTRNUL cannot be used 79 * on a stack that will grabstackstr()ed. 80 */ 81 #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 82 #define STUNPUTC(p) (++sstrnleft, --p) 83 #define STTOPC(p) p[-1] 84 #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 85 #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 86 #define STPUTBIN(s, len, p) p = stputbin((s), (len), p) 87 #define STPUTS(s, p) p = stputs((s), p) 88