diff options
Diffstat (limited to 'usr/src/lib/libast/common/sfio/sfextern.c')
| -rw-r--r-- | usr/src/lib/libast/common/sfio/sfextern.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/sfio/sfextern.c b/usr/src/lib/libast/common/sfio/sfextern.c new file mode 100644 index 0000000000..36ca0a0836 --- /dev/null +++ b/usr/src/lib/libast/common/sfio/sfextern.c @@ -0,0 +1,101 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* 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> * +* * +***********************************************************************/ +#include "sfhdr.h" + +/* External variables and functions used only by Sfio +** Written by Kiem-Phong Vo +*/ + +/* code to initialize mutexes */ +static Vtmutex_t Sfmutex; +static Vtonce_t Sfonce = VTONCE_INITDATA; +static void _sfoncef() +{ (void)vtmtxopen(_Sfmutex, VT_INIT); + (void)vtmtxopen(&_Sfpool.mutex, VT_INIT); + (void)vtmtxopen(sfstdin->mutex, VT_INIT); + (void)vtmtxopen(sfstdout->mutex, VT_INIT); + (void)vtmtxopen(sfstderr->mutex, VT_INIT); + _Sfdone = 1; +} + +/* global variables used internally to the package */ +Sfextern_t _Sfextern = +{ 0, /* _Sfpage */ + { NIL(Sfpool_t*), 0, 0, 0, NIL(Sfio_t**) }, /* _Sfpool */ + NIL(int(*)_ARG_((Sfio_t*,int))), /* _Sfpmove */ + NIL(Sfio_t*(*)_ARG_((Sfio_t*, Sfio_t*))), /* _Sfstack */ + NIL(void(*)_ARG_((Sfio_t*, int, int))), /* _Sfnotify */ + NIL(int(*)_ARG_((Sfio_t*))), /* _Sfstdsync */ + { NIL(Sfread_f), /* _Sfudisc */ + NIL(Sfwrite_f), + NIL(Sfseek_f), + NIL(Sfexcept_f), + NIL(Sfdisc_t*) + }, + NIL(void(*)_ARG_((void)) ), /* _Sfcleanup */ + 0, /* _Sfexiting */ + 0, /* _Sfdone */ + &Sfonce, /* _Sfonce */ + _sfoncef, /* _Sfoncef */ + &Sfmutex /* _Sfmutex */ +}; + +ssize_t _Sfi = -1; /* value for a few fast macro functions */ +#if INT_MAX == LONG_MAX +ssize_t _Sfmaxr = 64*1024; /* default maximum size for a record */ +#else +ssize_t _Sfmaxr = 16*1024; /* default maximum size for a record */ +#endif + +#if vt_threaded +static Vtmutex_t _Sfmtxin, _Sfmtxout, _Sfmtxerr; +#define SFMTXIN (&_Sfmtxin) +#define SFMTXOUT (&_Sfmtxout) +#define SFMTXERR (&_Sfmtxerr) +#else +#define SFMTXIN (0) +#define SFMTXOUT (0) +#define SFMTXERR (0) +#endif + +Sfio_t _Sfstdin = SFNEW(NIL(char*),-1,0, + (SF_READ |SF_STATIC|SF_MTSAFE),NIL(Sfdisc_t*),SFMTXIN); +Sfio_t _Sfstdout = SFNEW(NIL(char*),-1,1, + (SF_WRITE|SF_STATIC|SF_MTSAFE),NIL(Sfdisc_t*),SFMTXOUT); +Sfio_t _Sfstderr = SFNEW(NIL(char*),-1,2, + (SF_WRITE|SF_STATIC|SF_MTSAFE),NIL(Sfdisc_t*),SFMTXERR); + +#undef sfstdin +#undef sfstdout +#undef sfstderr + +Sfio_t* sfstdin = &_Sfstdin; +Sfio_t* sfstdout = &_Sfstdout; +Sfio_t* sfstderr = &_Sfstderr; + +__EXTERN__(ssize_t,_Sfi); +__EXTERN__(Sfio_t,_Sfstdin); +__EXTERN__(Sfio_t,_Sfstdout); +__EXTERN__(Sfio_t,_Sfstderr); +__EXTERN__(Sfio_t*,sfstdin); +__EXTERN__(Sfio_t*,sfstdout); +__EXTERN__(Sfio_t*,sfstderr); |