159 lines
4.5 KiB
C
159 lines
4.5 KiB
C
/***********************************************************************/
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/* */
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/* MLTk, Tcl/Tk interface of Objective Caml */
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/* */
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/* Francois Rouaix, Francois Pessaux, Jun Furuse and Pierre Weis */
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/* projet Cristal, INRIA Rocquencourt */
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/* Jacques Garrigue, Kyoto University RIMS */
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/* */
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/* Copyright 2002 Institut National de Recherche en Informatique et */
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/* en Automatique and Kyoto University. All rights reserved. */
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/* This file is distributed under the terms of the GNU Library */
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/* General Public License, with the special exception on linking */
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/* described in file LICENSE found in the Objective Caml source tree. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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#ifdef __CYGWIN__
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#define _WIN32
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#endif
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#ifdef _WIN32
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#include <wtypes.h>
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#include <winbase.h>
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#include <winsock.h>
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#endif
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#include <tcl.h>
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#include <tk.h>
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#include <mlvalues.h>
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#include <callback.h>
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#include "camltk.h"
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/*
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* File descriptor callbacks
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*/
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void FileProc(ClientData clientdata, int mask)
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{
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callback2(*handler_code,Val_int(clientdata),Val_int(0));
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}
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/* Map Unix.file_descr values to Tcl file handles */
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#ifndef _WIN32
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/* Under Unix, we use file handlers */
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/* Map Unix.file_descr values to Tcl file handles (for tcl 7)
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or Unix file descriptors (for tcl 8). */
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#if (TCL_MAJOR_VERSION < 8)
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static Tcl_File tcl_filehandle(value fd)
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{
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return Tcl_GetFile((ClientData)Long_val(fd), TCL_UNIX_FD);
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}
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#else
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#define tcl_filehandle(fd) Int_val(fd)
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#define Tcl_File int
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#endif
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CAMLprim value camltk_add_file_input(value fd, value cbid)
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{
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CheckInit();
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Tcl_CreateFileHandler(tcl_filehandle(fd), TCL_READABLE,
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FileProc, (ClientData)(Long_val(cbid)));
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return Val_unit;
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}
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/* We have to free the Tcl handle when we are finished using it (Tcl
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* asks us to, and moreover it is probably dangerous to keep the same
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* handle over two allocations of the same fd by the kernel).
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* But we don't know when we are finished with the fd, so we free it
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* in rem_file (it doesn't close the fd anyway). For fds for which we
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* repeatedly add/rem, this will cause some overhead.
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*/
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CAMLprim value camltk_rem_file_input(value fd, value cbid)
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{
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Tcl_File fh = tcl_filehandle(fd);
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Tcl_DeleteFileHandler(fh);
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#if (TCL_MAJOR_VERSION < 8)
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Tcl_FreeFile(fh);
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#endif
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return Val_unit;
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}
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CAMLprim value camltk_add_file_output(value fd, value cbid)
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{
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CheckInit();
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Tcl_CreateFileHandler(tcl_filehandle(fd), TCL_WRITABLE,
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FileProc, (ClientData) (Long_val(cbid)));
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return Val_unit;
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}
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CAMLprim value camltk_rem_file_output(value fd, value cbid)
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{
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Tcl_File fh = tcl_filehandle(fd);
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Tcl_DeleteFileHandler(fh);
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#if (TCL_MAJOR_VERSION < 8)
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Tcl_FreeFile(fh);
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#endif
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return Val_unit;
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}
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#else
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/* Under Win32, we go through the generic channel abstraction */
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#define Handle_val(v) (*((HANDLE *) Data_custom_val(v)))
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/* Map Unix.file_descr values to Tcl channels */
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static Tcl_Channel tcl_channel(value fd, int flags)
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{
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HANDLE h = Handle_val(fd);
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int optval, optsize;
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optsize = sizeof(optval);
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if (getsockopt((SOCKET) h, SOL_SOCKET, SO_TYPE,
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(char *)&optval, &optsize) == 0)
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return Tcl_MakeTcpClientChannel((ClientData) h);
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else
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return Tcl_MakeFileChannel((ClientData) h, flags);
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}
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CAMLprim value camltk_add_file_input(value fd, value cbid)
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{
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CheckInit();
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Tcl_CreateChannelHandler(tcl_channel(fd, TCL_READABLE),
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TCL_READABLE,
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FileProc, (ClientData) (Int_val(cbid)));
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return Val_unit;
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}
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CAMLprim value camltk_rem_file_input(value fd, value cbid)
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{
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Tcl_DeleteChannelHandler(tcl_channel(fd, TCL_READABLE),
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FileProc, (ClientData) (Int_val(cbid)));
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return Val_unit;
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}
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CAMLprim value camltk_add_file_output(value fd, value cbid)
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{
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CheckInit();
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Tcl_CreateChannelHandler(tcl_channel(fd, TCL_WRITABLE),
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TCL_WRITABLE,
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FileProc, (ClientData) (Int_val(cbid)));
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return Val_unit;
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}
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CAMLprim value camltk_rem_file_output(value fd, value cbid)
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{
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Tcl_DeleteChannelHandler(tcl_channel(fd, TCL_WRITABLE),
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FileProc, (ClientData) (Int_val(cbid)));
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return Val_unit;
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}
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#endif
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