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/*
* The Unix Channel
*
* by Michel Beaudouin-Lafon and Stephane Chatty
*
* Copyright 1990-1993
* Laboratoire de Recherche en Informatique (LRI)
* Centre d'Etudes de la Navigation Aerienne
*
* Tk-based multiplexers
*
* $Id$
* $CurLog$
* Made consistent with Tcl7.0 and Tk3.3
*/
#include "TkMultiplexer.h"
/* these files are included by tk.h, I include them here to avoid
them being enclosed in extern "C" */
#include <X11/Xlib.h>
#include <stddef.h>
#include <stdio.h>
extern "C" {
#include "tk.h"
}
#include <memory.h>
static void
ioHandler (ClientData client_data, int mask)
{
IvlChannel* ch = (IvlChannel*) client_data;
if (mask & TK_WRITABLE)
ch->HandleWrite ();
if (mask & TK_READABLE)
ch->HandleRead ();
}
IvlTkMultiplexer :: IvlTkMultiplexer ()
: IvlBaseMultiplexer ()
{
memset (Active, 0, NFILE * sizeof (bool));
}
IvlTkMultiplexer :: ~IvlTkMultiplexer ()
{
}
void
IvlTkMultiplexer :: SetMasks (int fd, IOMODE mode)
{
IvlChannel* ch = Channels [fd];
if (!ch)
return;
/* remove if already there */
if (Active [fd]) {
Tk_DeleteFileHandler (fd);
ReadCount--;
}
/* add channel */
int mask = 0;
if (mode & IORead)
mask |= TK_READABLE;
if (mode & IOWrite)
mask |= TK_WRITABLE;
if (mode & IOSelect)
Error (ErrWarn, "AddChannel", "select condition ignored");
if (mask) {
Tk_CreateFileHandler (fd, mask, ioHandler, (ClientData) ch);
ReadCount++;
Active [fd] = true;
}
}
void
IvlTkMultiplexer :: FireTimers (ClientData mpx)
{
IvlCoreTimer::Fire (((IvlTkMultiplexer*) mpx)->GetTimerSet ());
}
void
IvlTkMultiplexer :: SetTimeOut (Millisecond delay)
{
TimeOut = Tk_CreateTimerHandler (int (delay), &IvlTkMultiplexer::FireTimers, (ClientData) this);
}
void
IvlTkMultiplexer :: SuppressTimeOut ()
{
Tk_DeleteTimerHandler (TimeOut);
TimeOut = 0;
}
void
IvlTkMultiplexer :: FireSignals (ClientData mpx)
{
((IvlTkMultiplexer*) mpx)->HandleDeferredSignals ();
}
void
IvlTkMultiplexer :: AddSignalHook ()
{
Tk_DoWhenIdle (&IvlTkMultiplexer::FireSignals, (ClientData) this);
}
MPX_RES
IvlTkMultiplexer :: Loop ()
{
Looping = true;
Tk_MainLoop ();
if (Looping) {
Looping = false;
return isMpxEmpty;
}
return isMpxTerminated;
}
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