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 * %sccs.include.redist.c% 9 * 10 * @(#)memalloc.h 8.2 (Berkeley) 05/04/95 11 */ 12 13 struct stackmark { 14 struct stack_block *stackp; 15 char *stacknxt; 16 int stacknleft; 17 }; 18 19 20 extern char *stacknxt; 21 extern int stacknleft; 22 extern int sstrnleft; 23 extern int herefd; 24 25 pointer ckmalloc __P((int)); 26 pointer ckrealloc __P((pointer, int)); 27 char *savestr __P((char *)); 28 pointer stalloc __P((int)); 29 void stunalloc __P((pointer)); 30 void setstackmark __P((struct stackmark *)); 31 void popstackmark __P((struct stackmark *)); 32 void growstackblock __P((void)); 33 void grabstackblock __P((int)); 34 char *growstackstr __P((void)); 35 char *makestrspace __P((void)); 36 void ungrabstackstr __P((char *, char *)); 37 38 39 40 #define stackblock() stacknxt 41 #define stackblocksize() stacknleft 42 #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 43 #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 44 #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 45 #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 46 #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 47 #define STUNPUTC(p) (++sstrnleft, --p) 48 #define STTOPC(p) p[-1] 49 #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 50 #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 51 52 #define ckfree(p) free((pointer)(p)) 53