1 /*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * 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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)memalloc.h 5.1 (Berkeley) 3/7/91 37 */ 38 39 struct stackmark { 40 struct stack_block *stackp; 41 char *stacknxt; 42 int stacknleft; 43 }; 44 45 46 extern char *stacknxt; 47 extern int stacknleft; 48 extern int sstrnleft; 49 extern int herefd; 50 51 #ifdef __STDC__ 52 pointer ckmalloc(int); 53 pointer ckrealloc(pointer, int); 54 void free(pointer); /* defined in C library */ 55 char *savestr(char *); 56 pointer stalloc(int); 57 void stunalloc(pointer); 58 void setstackmark(struct stackmark *); 59 void popstackmark(struct stackmark *); 60 void growstackblock(void); 61 void grabstackblock(int); 62 char *growstackstr(void); 63 char *makestrspace(void); 64 void ungrabstackstr(char *, char *); 65 #else 66 pointer ckmalloc(); 67 pointer ckrealloc(); 68 void free(); /* defined in C library */ 69 char *savestr(); 70 pointer stalloc(); 71 void stunalloc(); 72 void setstackmark(); 73 void popstackmark(); 74 void growstackblock(); 75 void grabstackblock(); 76 char *growstackstr(); 77 char *makestrspace(); 78 void ungrabstackstr(); 79 #endif 80 81 82 83 #define stackblock() stacknxt 84 #define stackblocksize() stacknleft 85 #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 86 #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 87 #define CHECKSTRSPACE(n, p) if (sstrnleft < n) p = makestrspace(); else 88 #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 89 #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 90 #define STUNPUTC(p) (++sstrnleft, --p) 91 #define STTOPC(p) p[-1] 92 #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 93 #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 94 95 #define ckfree(p) free((pointer)(p)) 96