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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* 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, void*))), /* _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 */
#ifdef _ast_int8_t
ssize_t _Sfmaxr = 256*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)
#define SF_STDSAFE SF_MTSAFE
#else
#define SFMTXIN (0)
#define SFMTXOUT (0)
#define SFMTXERR (0)
#define SF_STDSAFE (0)
#endif
Sfio_t _Sfstdin = SFNEW(NIL(char*),-1,0,
(SF_READ |SF_STATIC|SF_STDSAFE),NIL(Sfdisc_t*),SFMTXIN);
Sfio_t _Sfstdout = SFNEW(NIL(char*),-1,1,
(SF_WRITE|SF_STATIC|SF_STDSAFE),NIL(Sfdisc_t*),SFMTXOUT);
Sfio_t _Sfstderr = SFNEW(NIL(char*),-1,2,
(SF_WRITE|SF_STATIC|SF_STDSAFE),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);
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