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/***********************************************************************/
/* */
/* MLTk, Tcl/Tk interface of OCaml */
/* */
/* Francois Rouaix, Francois Pessaux, Jun Furuse and Pierre Weis */
/* projet Cristal, INRIA Rocquencourt */
/* Jacques Garrigue, Kyoto University RIMS */
/* */
/* Copyright 2002 Institut National de Recherche en Informatique et */
/* en Automatique and Kyoto University. All rights reserved. */
/* This file is distributed under the terms of the GNU Library */
/* General Public License, with the special exception on linking */
/* described in file LICENSE found in the OCaml source tree. */
/* */
/***********************************************************************/
/* $Id$ */
#ifdef _WIN32
#include <wtypes.h>
#include <winbase.h>
#include <winsock.h>
#endif
#include <tcl.h>
#include <tk.h>
#include <mlvalues.h>
#include <callback.h>
#include "camltk.h"
/*
* File descriptor callbacks
*/
void FileProc(ClientData clientdata, int mask)
{
caml_callback2(*handler_code,Val_int(clientdata),Val_int(0));
}
/* Map Unix.file_descr values to Tcl file handles */
#ifndef _WIN32
/* Under Unix, we use file handlers */
/* Map Unix.file_descr values to Tcl file handles (for tcl 7)
or Unix file descriptors (for tcl 8). */
#if (TCL_MAJOR_VERSION < 8)
static Tcl_File tcl_filehandle(value fd)
{
return Tcl_GetFile((ClientData)Long_val(fd), TCL_UNIX_FD);
}
#else
#define tcl_filehandle(fd) Int_val(fd)
#define Tcl_File int
#endif
CAMLprim value camltk_add_file_input(value fd, value cbid)
{
CheckInit();
Tcl_CreateFileHandler(tcl_filehandle(fd), TCL_READABLE,
FileProc, (ClientData)(Long_val(cbid)));
return Val_unit;
}
/* We have to free the Tcl handle when we are finished using it (Tcl
* asks us to, and moreover it is probably dangerous to keep the same
* handle over two allocations of the same fd by the kernel).
* But we don't know when we are finished with the fd, so we free it
* in rem_file (it doesn't close the fd anyway). For fds for which we
* repeatedly add/rem, this will cause some overhead.
*/
CAMLprim value camltk_rem_file_input(value fd, value cbid)
{
Tcl_File fh = tcl_filehandle(fd);
Tcl_DeleteFileHandler(fh);
#if (TCL_MAJOR_VERSION < 8)
Tcl_FreeFile(fh);
#endif
return Val_unit;
}
CAMLprim value camltk_add_file_output(value fd, value cbid)
{
CheckInit();
Tcl_CreateFileHandler(tcl_filehandle(fd), TCL_WRITABLE,
FileProc, (ClientData) (Long_val(cbid)));
return Val_unit;
}
CAMLprim value camltk_rem_file_output(value fd, value cbid)
{
Tcl_File fh = tcl_filehandle(fd);
Tcl_DeleteFileHandler(fh);
#if (TCL_MAJOR_VERSION < 8)
Tcl_FreeFile(fh);
#endif
return Val_unit;
}
#else
/* Under Win32, we go through the generic channel abstraction */
#define Handle_val(v) (*((HANDLE *) Data_custom_val(v)))
/* Map Unix.file_descr values to Tcl channels */
static Tcl_Channel tcl_channel(value fd, int flags)
{
HANDLE h = Handle_val(fd);
int optval, optsize;
optsize = sizeof(optval);
if (getsockopt((SOCKET) h, SOL_SOCKET, SO_TYPE,
(char *)&optval, &optsize) == 0)
return Tcl_MakeTcpClientChannel((ClientData) h);
else
return Tcl_MakeFileChannel((ClientData) h, flags);
}
CAMLprim value camltk_add_file_input(value fd, value cbid)
{
CheckInit();
Tcl_CreateChannelHandler(tcl_channel(fd, TCL_READABLE),
TCL_READABLE,
FileProc, (ClientData) (Int_val(cbid)));
return Val_unit;
}
CAMLprim value camltk_rem_file_input(value fd, value cbid)
{
Tcl_DeleteChannelHandler(tcl_channel(fd, TCL_READABLE),
FileProc, (ClientData) (Int_val(cbid)));
return Val_unit;
}
CAMLprim value camltk_add_file_output(value fd, value cbid)
{
CheckInit();
Tcl_CreateChannelHandler(tcl_channel(fd, TCL_WRITABLE),
TCL_WRITABLE,
FileProc, (ClientData) (Int_val(cbid)));
return Val_unit;
}
CAMLprim value camltk_rem_file_output(value fd, value cbid)
{
Tcl_DeleteChannelHandler(tcl_channel(fd, TCL_WRITABLE),
FileProc, (ClientData) (Int_val(cbid)));
return Val_unit;
}
#endif
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