memalloc.h revision 217209
128263Spst/*- 228263Spst * Copyright (c) 1991, 1993 350472Speter * The Regents of the University of California. All rights reserved. 428263Spst * 561410Sbrian * This code is derived from software contributed to Berkeley by 661981Sbrian * Kenneth Almquist. 728263Spst * 828263Spst * Redistribution and use in source and binary forms, with or without 961410Sbrian * modification, are permitted provided that the following conditions 1061410Sbrian * are met: 1161981Sbrian * 1. Redistributions of source code must retain the above copyright 1261981Sbrian * notice, this list of conditions and the following disclaimer. 1361981Sbrian * 2. Redistributions in binary form must reproduce the above copyright 1461981Sbrian * notice, this list of conditions and the following disclaimer in the 1528263Spst * documentation and/or other materials provided with the distribution. 1628263Spst * 4. Neither the name of the University nor the names of its contributors 1761981Sbrian * may be used to endorse or promote products derived from this software 1861410Sbrian * without specific prior written permission. 1965843Sbrian * 2061458Sbrian * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2165843Sbrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2265843Sbrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2365843Sbrian * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2465843Sbrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2561458Sbrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2661458Sbrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2761410Sbrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2861458Sbrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2961981Sbrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30104574Sjoerg * SUCH DAMAGE. 31126342Sache * 32126342Sache * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 3361981Sbrian * $FreeBSD: head/bin/sh/memalloc.h 217209 2011-01-09 22:47:58Z jilles $ 3461458Sbrian */ 35126342Sache 36126342Sache#include <string.h> 37126342Sache 3861981Sbrianstruct stackmark { 3961458Sbrian struct stack_block *stackp; 4061458Sbrian char *stacknxt; 4161458Sbrian int stacknleft; 4261458Sbrian struct stackmark *marknext; 4361458Sbrian}; 4461410Sbrian 4565843Sbrian 4665843Sbrianextern char *stacknxt; 4765843Sbrianextern int stacknleft; 48272430Sbdreweryextern char *sstrend; 49272430Sbdrewery 5065843Sbrianpointer ckmalloc(size_t); 5165843Sbrianpointer ckrealloc(pointer, int); 5265843Sbrianvoid ckfree(pointer); 5365843Sbrianchar *savestr(const char *); 5461458Sbrianpointer stalloc(int); 5561458Sbrianvoid stunalloc(pointer); 5665843Sbrianvoid setstackmark(struct stackmark *); 5765843Sbrianvoid popstackmark(struct stackmark *); 5861410Sbrianchar *growstackstr(void); 5965843Sbrianchar *makestrspace(int, char *); 6065843Sbrianchar *stputbin(const char *data, int len, char *p); 61char *stputs(const char *data, char *p); 62 63 64 65#define stackblock() stacknxt 66#define stackblocksize() stacknleft 67#define grabstackblock(n) stalloc(n) 68#define STARTSTACKSTR(p) p = stackblock() 69#define STPUTC(c, p) do { if (p == sstrend) p = growstackstr(); *p++ = (c); } while(0) 70#define CHECKSTRSPACE(n, p) { if (sstrend - p < n) p = makestrspace(n, p); } 71#define USTPUTC(c, p) (*p++ = (c)) 72/* 73 * STACKSTRNUL's use is where we want to be able to turn a stack 74 * (non-sentinel, character counting string) into a C string, 75 * and later pretend the NUL is not there. 76 * Note: Because of STACKSTRNUL's semantics, STACKSTRNUL cannot be used 77 * on a stack that will grabstackstr()ed. 78 */ 79#define STACKSTRNUL(p) (p == sstrend ? (p = growstackstr(), *p = '\0') : (*p = '\0')) 80#define STUNPUTC(p) (--p) 81#define STTOPC(p) p[-1] 82#define STADJUST(amount, p) (p += (amount)) 83#define grabstackstr(p) stalloc((char *)p - stackblock()) 84#define ungrabstackstr(s, p) stunalloc((s)) 85#define STPUTBIN(s, len, p) p = stputbin((s), (len), p) 86#define STPUTS(s, p) p = stputs((s), p) 87