memalloc.h revision 1556
11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1991, 1993 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * This code is derived from software contributed to Berkeley by 61556Srgrimes * Kenneth Almquist. 71556Srgrimes * 81556Srgrimes * Redistribution and use in source and binary forms, with or without 91556Srgrimes * modification, are permitted provided that the following conditions 101556Srgrimes * are met: 111556Srgrimes * 1. Redistributions of source code must retain the above copyright 121556Srgrimes * notice, this list of conditions and the following disclaimer. 131556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141556Srgrimes * notice, this list of conditions and the following disclaimer in the 151556Srgrimes * documentation and/or other materials provided with the distribution. 161556Srgrimes * 3. All advertising materials mentioning features or use of this software 171556Srgrimes * must display the following acknowledgement: 181556Srgrimes * This product includes software developed by the University of 191556Srgrimes * California, Berkeley and its contributors. 201556Srgrimes * 4. Neither the name of the University nor the names of its contributors 211556Srgrimes * may be used to endorse or promote products derived from this software 221556Srgrimes * without specific prior written permission. 231556Srgrimes * 241556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341556Srgrimes * SUCH DAMAGE. 351556Srgrimes * 361556Srgrimes * @(#)memalloc.h 8.1 (Berkeley) 5/31/93 371556Srgrimes */ 381556Srgrimes 391556Srgrimesstruct stackmark { 401556Srgrimes struct stack_block *stackp; 411556Srgrimes char *stacknxt; 421556Srgrimes int stacknleft; 431556Srgrimes}; 441556Srgrimes 451556Srgrimes 461556Srgrimesextern char *stacknxt; 471556Srgrimesextern int stacknleft; 481556Srgrimesextern int sstrnleft; 491556Srgrimesextern int herefd; 501556Srgrimes 511556Srgrimes#ifdef __STDC__ 521556Srgrimespointer ckmalloc(int); 531556Srgrimespointer ckrealloc(pointer, int); 541556Srgrimesvoid free(pointer); /* defined in C library */ 551556Srgrimeschar *savestr(char *); 561556Srgrimespointer stalloc(int); 571556Srgrimesvoid stunalloc(pointer); 581556Srgrimesvoid setstackmark(struct stackmark *); 591556Srgrimesvoid popstackmark(struct stackmark *); 601556Srgrimesvoid growstackblock(void); 611556Srgrimesvoid grabstackblock(int); 621556Srgrimeschar *growstackstr(void); 631556Srgrimeschar *makestrspace(void); 641556Srgrimesvoid ungrabstackstr(char *, char *); 651556Srgrimes#else 661556Srgrimespointer ckmalloc(); 671556Srgrimespointer ckrealloc(); 681556Srgrimesvoid free(); /* defined in C library */ 691556Srgrimeschar *savestr(); 701556Srgrimespointer stalloc(); 711556Srgrimesvoid stunalloc(); 721556Srgrimesvoid setstackmark(); 731556Srgrimesvoid popstackmark(); 741556Srgrimesvoid growstackblock(); 751556Srgrimesvoid grabstackblock(); 761556Srgrimeschar *growstackstr(); 771556Srgrimeschar *makestrspace(); 781556Srgrimesvoid ungrabstackstr(); 791556Srgrimes#endif 801556Srgrimes 811556Srgrimes 821556Srgrimes 831556Srgrimes#define stackblock() stacknxt 841556Srgrimes#define stackblocksize() stacknleft 851556Srgrimes#define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 861556Srgrimes#define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 871556Srgrimes#define CHECKSTRSPACE(n, p) if (sstrnleft < n) p = makestrspace(); else 881556Srgrimes#define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 891556Srgrimes#define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 901556Srgrimes#define STUNPUTC(p) (++sstrnleft, --p) 911556Srgrimes#define STTOPC(p) p[-1] 921556Srgrimes#define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 931556Srgrimes#define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 941556Srgrimes 951556Srgrimes#define ckfree(p) free((pointer)(p)) 96