1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * David Korn <dgk@research.att.com> * 19da2e3ebdSchin * Phong Vo <kpv@research.att.com> * 20da2e3ebdSchin * * 21da2e3ebdSchin ***********************************************************************/ 22da2e3ebdSchin #pragma prototyped 23da2e3ebdSchin /* 24da2e3ebdSchin * David Korn 25da2e3ebdSchin * AT&T Research 26da2e3ebdSchin * 27da2e3ebdSchin * Interface definitions for a stack-like storage library 28da2e3ebdSchin * 29da2e3ebdSchin */ 30da2e3ebdSchin 31da2e3ebdSchin #ifndef _STK_H 32da2e3ebdSchin #define _STK_H 33da2e3ebdSchin 34da2e3ebdSchin #include <sfio.h> 35da2e3ebdSchin 36da2e3ebdSchin #define _Stk_data _Stak_data 37da2e3ebdSchin 38da2e3ebdSchin #define stkstd (&_Stk_data) 39da2e3ebdSchin 40da2e3ebdSchin #define Stk_t Sfio_t 41da2e3ebdSchin 42da2e3ebdSchin #define STK_SMALL 1 /* small stkopen stack */ 43da2e3ebdSchin #define STK_NULL 2 /* return NULL on overflow */ 44da2e3ebdSchin 45da2e3ebdSchin #define stkptr(sp,n) ((char*)((sp)->_data)+(n)) 46da2e3ebdSchin #define stktop(sp) ((char*)(sp)->_next) 47da2e3ebdSchin #define stktell(sp) ((sp)->_next-(sp)->_data) 48da2e3ebdSchin #define stkseek(sp,n) ((n)==0?(char*)((sp)->_next=(sp)->_data):_stkseek(sp,n)) 49da2e3ebdSchin 50da2e3ebdSchin #if _BLD_ast && defined(__EXPORT__) 51da2e3ebdSchin #define extern extern __EXPORT__ 52da2e3ebdSchin #endif 53da2e3ebdSchin #if !_BLD_ast && defined(__IMPORT__) 54da2e3ebdSchin #define extern extern __IMPORT__ 55da2e3ebdSchin #endif 56da2e3ebdSchin 57da2e3ebdSchin extern Sfio_t _Stk_data; 58da2e3ebdSchin 59da2e3ebdSchin #undef extern 60da2e3ebdSchin 61da2e3ebdSchin #if _BLD_ast && defined(__EXPORT__) 62da2e3ebdSchin #define extern __EXPORT__ 63da2e3ebdSchin #endif 64da2e3ebdSchin 65da2e3ebdSchin extern Stk_t* stkopen(int); 66da2e3ebdSchin extern Stk_t* stkinstall(Stk_t*, char*(*)(int)); 67da2e3ebdSchin extern int stkclose(Stk_t*); 68da2e3ebdSchin extern int stklink(Stk_t*); 69*b30d1939SAndy Fiddaman extern char* stkalloc(Stk_t*, size_t); 70*b30d1939SAndy Fiddaman extern char* stkcopy(Stk_t*, const char*); 71*b30d1939SAndy Fiddaman extern char* stkset(Stk_t*, char*, size_t); 72*b30d1939SAndy Fiddaman extern char* _stkseek(Stk_t*, ssize_t); 73*b30d1939SAndy Fiddaman extern char* stkfreeze(Stk_t*, size_t); 74*b30d1939SAndy Fiddaman extern int stkon(Stk_t*, char*); 75da2e3ebdSchin 76da2e3ebdSchin #undef extern 77da2e3ebdSchin 78da2e3ebdSchin #endif 79