/*
Copyright (c) 1993 Xerox Corporation.  All rights reserved.
*/
/*
$Id$

$Date$
*/
/* Chauser, October 28, 1993 3:29 pm PDT */


/*
 * PCR stdiom.h -- monitored stdio streams
 */

#ifndef __PCR_stdiom_h
#define __PCR_stdiom_h

#include <stdio.h>
#include <signal.h>


extern FILE *
PCR_Stdiom_Create(FILE *stream);
/*
    Create a monitored stream from a normal (unmonitored) one.
*/

extern PCR_Bool
PCR_Stdiom_IsMonitored(FILE *stream);
/*
    Return PCR_Bool_true iff stream is monitored.
*/

extern PCR_ERes
PCR_Stdiom_Lock(
    FILE *stream,
    FILE **lockedStream,
    const PCR_sigset_t *sigMask,
    PCR_Msec wakeup
);
/*
    Lock stream, returning a locked, usable stream in *lockedStream.
    This must be followed by a call to PCR_Stdiom_Unlock(stream) using
      the original (not the locked) stream.
*/

extern PCR_ERes
PCR_Stdiom_Unlock(FILE *stream);
/*
    Unlock a previously locked stream.
*/


#endif /* __PCR_stdiom_h */

/*
$Log$
*/