14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 78462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #pragma prototyped 234887Schin /* 244887Schin * David Korn 254887Schin * AT&T Research 264887Schin * 274887Schin * Interface definitions for a stack-like storage library 284887Schin * 294887Schin */ 304887Schin 314887Schin #ifndef _STK_H 324887Schin #define _STK_H 334887Schin 344887Schin #include <sfio.h> 354887Schin 364887Schin #define _Stk_data _Stak_data 374887Schin 384887Schin #define stkstd (&_Stk_data) 394887Schin 404887Schin #define Stk_t Sfio_t 414887Schin 424887Schin #define STK_SMALL 1 /* small stkopen stack */ 434887Schin #define STK_NULL 2 /* return NULL on overflow */ 444887Schin 454887Schin #define stkptr(sp,n) ((char*)((sp)->_data)+(n)) 464887Schin #define stktop(sp) ((char*)(sp)->_next) 474887Schin #define stktell(sp) ((sp)->_next-(sp)->_data) 484887Schin #define stkseek(sp,n) ((n)==0?(char*)((sp)->_next=(sp)->_data):_stkseek(sp,n)) 494887Schin 504887Schin #if _BLD_ast && defined(__EXPORT__) 514887Schin #define extern extern __EXPORT__ 524887Schin #endif 534887Schin #if !_BLD_ast && defined(__IMPORT__) 544887Schin #define extern extern __IMPORT__ 554887Schin #endif 564887Schin 574887Schin extern Sfio_t _Stk_data; 584887Schin 594887Schin #undef extern 604887Schin 614887Schin #if _BLD_ast && defined(__EXPORT__) 624887Schin #define extern __EXPORT__ 634887Schin #endif 644887Schin 654887Schin extern Stk_t* stkopen(int); 664887Schin extern Stk_t* stkinstall(Stk_t*, char*(*)(int)); 674887Schin extern int stkclose(Stk_t*); 684887Schin extern int stklink(Stk_t*); 694887Schin extern char* stkalloc(Stk_t*, unsigned); 704887Schin extern char* stkcopy(Stk_t*,const char*); 714887Schin extern char* stkset(Stk_t*, char*, unsigned); 724887Schin extern char* _stkseek(Stk_t*, unsigned); 734887Schin extern char* stkfreeze(Stk_t*, unsigned); 748462SApril.Chin@Sun.COM extern int stkon(Stk_t*, char *); 754887Schin 764887Schin #undef extern 774887Schin 784887Schin #endif 79