147128Sbostic /*- 260698Sbostic * Copyright (c) 1991, 1993 360698Sbostic * The Regents of the University of California. All rights reserved. 447128Sbostic * 547128Sbostic * This code is derived from software contributed to Berkeley by 647128Sbostic * Kenneth Almquist. 747128Sbostic * 847128Sbostic * %sccs.include.redist.c% 947128Sbostic * 10*69272Schristos * @(#)memalloc.h 8.2 (Berkeley) 05/04/95 1147128Sbostic */ 1247128Sbostic 1347128Sbostic struct stackmark { 1447128Sbostic struct stack_block *stackp; 1547128Sbostic char *stacknxt; 1647128Sbostic int stacknleft; 1747128Sbostic }; 1847128Sbostic 1947128Sbostic 2047128Sbostic extern char *stacknxt; 2147128Sbostic extern int stacknleft; 2247128Sbostic extern int sstrnleft; 2347128Sbostic extern int herefd; 2447128Sbostic 25*69272Schristos pointer ckmalloc __P((int)); 26*69272Schristos pointer ckrealloc __P((pointer, int)); 27*69272Schristos char *savestr __P((char *)); 28*69272Schristos pointer stalloc __P((int)); 29*69272Schristos void stunalloc __P((pointer)); 30*69272Schristos void setstackmark __P((struct stackmark *)); 31*69272Schristos void popstackmark __P((struct stackmark *)); 32*69272Schristos void growstackblock __P((void)); 33*69272Schristos void grabstackblock __P((int)); 34*69272Schristos char *growstackstr __P((void)); 35*69272Schristos char *makestrspace __P((void)); 36*69272Schristos void ungrabstackstr __P((char *, char *)); 3747128Sbostic 3847128Sbostic 3947128Sbostic 4047128Sbostic #define stackblock() stacknxt 4147128Sbostic #define stackblocksize() stacknleft 4247128Sbostic #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() 4347128Sbostic #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) 44*69272Schristos #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } 4547128Sbostic #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) 4647128Sbostic #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) 4747128Sbostic #define STUNPUTC(p) (++sstrnleft, --p) 4847128Sbostic #define STTOPC(p) p[-1] 4947128Sbostic #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) 5047128Sbostic #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) 5147128Sbostic 5247128Sbostic #define ckfree(p) free((pointer)(p)) 53