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Diffstat (limited to 'src/lib/libast/include/stk.h')
| -rw-r--r-- | src/lib/libast/include/stk.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/lib/libast/include/stk.h b/src/lib/libast/include/stk.h new file mode 100644 index 0000000..851e408 --- /dev/null +++ b/src/lib/libast/include/stk.h @@ -0,0 +1,78 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped +/* + * David Korn + * AT&T Research + * + * Interface definitions for a stack-like storage library + * + */ + +#ifndef _STK_H +#define _STK_H + +#include <sfio.h> + +#define _Stk_data _Stak_data + +#define stkstd (&_Stk_data) + +#define Stk_t Sfio_t + +#define STK_SMALL 1 /* small stkopen stack */ +#define STK_NULL 2 /* return NULL on overflow */ + +#define stkptr(sp,n) ((char*)((sp)->_data)+(n)) +#define stktop(sp) ((char*)(sp)->_next) +#define stktell(sp) ((sp)->_next-(sp)->_data) +#define stkseek(sp,n) ((n)==0?(char*)((sp)->_next=(sp)->_data):_stkseek(sp,n)) + +#if _BLD_ast && defined(__EXPORT__) +#define extern extern __EXPORT__ +#endif +#if !_BLD_ast && defined(__IMPORT__) +#define extern extern __IMPORT__ +#endif + +extern Sfio_t _Stk_data; + +#undef extern + +#if _BLD_ast && defined(__EXPORT__) +#define extern __EXPORT__ +#endif + +extern Stk_t* stkopen(int); +extern Stk_t* stkinstall(Stk_t*, char*(*)(int)); +extern int stkclose(Stk_t*); +extern int stklink(Stk_t*); +extern char* stkalloc(Stk_t*, size_t); +extern char* stkcopy(Stk_t*, const char*); +extern char* stkset(Stk_t*, char*, size_t); +extern char* _stkseek(Stk_t*, ssize_t); +extern char* stkfreeze(Stk_t*, size_t); +extern int stkon(Stk_t*, char*); + +#undef extern + +#endif |