1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * giowin32.c: IO Channels for Win32.
5 * Copyright 1998 Owen Taylor and Tor Lillqvist
6 * Copyright 1999-2000 Tor Lillqvist and Craig Setera
7 * Copyright 2001 Andrew Lanoix
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
26 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
27 * file for a list of people on the GLib Team. See the ChangeLog
28 * files for a list of changes. These files are distributed with
29 * GLib at ftp://ftp.gtk.org/pub/gtk/.
32 /* Define this to get (very) verbose logging of all channels */
33 /* #define G_IO_WIN32_DEBUG */
41 #include <winsock.h> /* Not everybody has winsock2 */
50 typedef struct _GIOWin32Channel GIOWin32Channel;
51 typedef struct _GIOWin32Watch GIOWin32Watch;
53 #define BUFFER_SIZE 4096
56 G_IO_WIN32_WINDOWS_MESSAGES, /* Windows messages */
57 G_IO_WIN32_FILE_DESC, /* Unix-like file descriptors from
58 * _open() or _pipe(). Read with read().
59 * Have to create separate thread to read.
61 G_IO_WIN32_SOCKET /* Sockets. A separate thread is blocked
62 * in select() most of the time.
64 } GIOWin32ChannelType;
66 struct _GIOWin32Channel {
68 gint fd; /* Either a Unix-like file handle as provided
69 * by the Microsoft C runtime, or a SOCKET
70 * as provided by WinSock.
72 GIOWin32ChannelType type;
76 CRITICAL_SECTION mutex;
78 /* This is used by G_IO_WIN32_WINDOWS_MESSAGES channels */
79 HWND hwnd; /* handle of window, or NULL */
81 /* Following fields are used by both fd and socket channels. */
82 gboolean running; /* Is reader thread running. FALSE if
83 * EOF has been reached.
85 gboolean needs_close; /* If the channel has been closed while
86 * the reader thread was still running.
88 guint thread_id; /* If non-NULL has a reader thread, or has
90 HANDLE data_avail_event;
94 /* Following fields used by fd channels for input */
96 /* Data is kept in a circular buffer. To be able to distinguish between
97 * empty and full buffer, we cannot fill it completely, but have to
98 * leave a one character gap.
100 * Data available is between indexes rdp and wrp-1 (modulo BUFFER_SIZE).
103 * Full: (wrp + 1) % BUFFER_SIZE == rdp
106 guchar *buffer; /* (Circular) buffer */
107 gint wrp, rdp; /* Buffer indices for writing and reading */
108 HANDLE space_avail_event;
110 /* Following fields used by socket channels */
112 HANDLE data_avail_noticed_event;
115 #define LOCK(mutex) EnterCriticalSection (&mutex)
116 #define UNLOCK(mutex) LeaveCriticalSection (&mutex)
118 struct _GIOWin32Watch {
122 GIOCondition condition;
126 g_win32_print_access_mode (int flags)
128 g_print ("%s%s%s%s%s%s%s%s%s%s",
129 ((flags & 0x3) == _O_RDWR ? "O_RDWR" :
130 ((flags & 0x3) == _O_RDONLY ? "O_RDONLY" :
131 ((flags & 0x3) == _O_WRONLY ? "O_WRONLY" : "0"))),
132 (flags & _O_APPEND ? "|O_APPEND" : ""),
133 (flags & _O_RANDOM ? "|O_RANDOM" : ""),
134 (flags & _O_SEQUENTIAL ? "|O_SEQUENTIAL" : ""),
135 (flags & _O_TEMPORARY ? "|O_TEMPORARY" : ""),
136 (flags & _O_CREAT ? "|O_CREAT" : ""),
137 (flags & _O_TRUNC ? "|O_TRUNC" : ""),
138 (flags & _O_EXCL ? "|O_EXCL" : ""),
139 (flags & _O_TEXT ? "|O_TEXT" : ""),
140 (flags & _O_BINARY ? "|O_BINARY" : ""));
144 g_win32_print_gioflags (GIOFlags flags)
148 if (flags & G_IO_FLAG_APPEND)
149 bar = "|", g_print ("APPEND");
150 if (flags & G_IO_FLAG_NONBLOCK)
151 g_print ("%sNONBLOCK", bar), bar = "|";
152 if (flags & G_IO_FLAG_IS_READABLE)
153 g_print ("%sREADABLE", bar), bar = "|";
154 if (flags & G_IO_FLAG_IS_WRITEABLE)
155 g_print ("%sWRITEABLE", bar), bar = "|";
156 if (flags & G_IO_FLAG_IS_WRITEABLE)
157 g_print ("%sWRITEABLE", bar), bar = "|";
158 if (flags & G_IO_FLAG_IS_SEEKABLE)
159 g_print ("%sSEEKABLE", bar), bar = "|";
163 g_io_win32_get_debug_flag (void)
165 #ifdef G_IO_WIN32_DEBUG
168 if (getenv ("G_IO_WIN32_DEBUG") != NULL)
176 g_io_channel_win32_init (GIOWin32Channel *channel)
178 channel->debug = g_io_win32_get_debug_flag ();
179 channel->buffer = NULL;
180 channel->running = FALSE;
181 channel->needs_close = FALSE;
182 channel->thread_id = 0;
183 channel->data_avail_event = NULL;
184 channel->revents = 0;
185 channel->space_avail_event = NULL;
186 channel->data_avail_noticed_event = NULL;
187 channel->watches = NULL;
188 InitializeCriticalSection (&channel->mutex);
192 create_events (GIOWin32Channel *channel)
194 SECURITY_ATTRIBUTES sec_attrs;
196 sec_attrs.nLength = sizeof (SECURITY_ATTRIBUTES);
197 sec_attrs.lpSecurityDescriptor = NULL;
198 sec_attrs.bInheritHandle = FALSE;
200 /* The data available event is manual reset, the space available event
201 * is automatic reset.
203 if (!(channel->data_avail_event = CreateEvent (&sec_attrs, TRUE, FALSE, NULL))
204 || !(channel->space_avail_event = CreateEvent (&sec_attrs, FALSE, FALSE, NULL))
205 || !(channel->data_avail_noticed_event = CreateEvent (&sec_attrs, FALSE, FALSE, NULL)))
207 gchar *emsg = g_win32_error_message (GetLastError ());
208 g_error ("Error creating event: %s", emsg);
213 static unsigned __stdcall
214 read_thread (void *parameter)
216 GIOWin32Channel *channel = parameter;
220 g_io_channel_ref ((GIOChannel *)channel);
223 g_print ("read_thread %#x: start fd:%d, data_avail:%#x space_avail:%#x\n",
226 (guint) channel->data_avail_event,
227 (guint) channel->space_avail_event);
229 channel->buffer = g_malloc (BUFFER_SIZE);
230 channel->rdp = channel->wrp = 0;
231 channel->running = TRUE;
233 SetEvent (channel->space_avail_event);
235 while (channel->running)
237 LOCK (channel->mutex);
239 g_print ("read_thread %#x: rdp=%d, wrp=%d\n",
240 channel->thread_id, channel->rdp, channel->wrp);
241 if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
245 g_print ("read_thread %#x: resetting space_avail\n",
247 ResetEvent (channel->space_avail_event);
249 g_print ("read_thread %#x: waiting for space\n",
251 UNLOCK (channel->mutex);
252 WaitForSingleObject (channel->space_avail_event, INFINITE);
253 LOCK (channel->mutex);
255 g_print ("read_thread %#x: rdp=%d, wrp=%d\n",
256 channel->thread_id, channel->rdp, channel->wrp);
259 buffer = channel->buffer + channel->wrp;
261 /* Always leave at least one byte unused gap to be able to
262 * distinguish between the full and empty condition...
264 nbytes = MIN ((channel->rdp + BUFFER_SIZE - channel->wrp - 1) % BUFFER_SIZE,
265 BUFFER_SIZE - channel->wrp);
268 g_print ("read_thread %#x: calling read() for %d bytes\n",
269 channel->thread_id, nbytes);
271 UNLOCK (channel->mutex);
273 nbytes = read (channel->fd, buffer, nbytes);
275 LOCK (channel->mutex);
277 channel->revents = G_IO_IN;
279 channel->revents |= G_IO_HUP;
281 channel->revents |= G_IO_ERR;
284 g_print ("read_thread %#x: read() returned %d, rdp=%d, wrp=%d\n",
285 channel->thread_id, nbytes, channel->rdp, channel->wrp);
290 channel->wrp = (channel->wrp + nbytes) % BUFFER_SIZE;
292 g_print ("read_thread %#x: rdp=%d, wrp=%d, setting data_avail\n",
293 channel->thread_id, channel->rdp, channel->wrp);
294 SetEvent (channel->data_avail_event);
295 UNLOCK (channel->mutex);
298 channel->running = FALSE;
299 if (channel->needs_close)
302 g_print ("read_thread %#x: channel fd %d needs closing\n",
303 channel->thread_id, channel->fd);
309 g_print ("read_thread %#x: EOF, rdp=%d, wrp=%d, setting data_avail\n",
310 channel->thread_id, channel->rdp, channel->wrp);
311 SetEvent (channel->data_avail_event);
312 UNLOCK (channel->mutex);
314 g_io_channel_unref((GIOChannel *)channel);
316 /* No need to call _endthreadex(), the actual thread starter routine
317 * in MSVCRT (see crt/src/threadex.c:_threadstartex) calls
318 * _endthreadex() for us.
325 create_thread (GIOWin32Channel *channel,
326 GIOCondition condition,
327 unsigned (__stdcall *thread) (void *parameter))
329 HANDLE thread_handle;
331 thread_handle = (HANDLE) _beginthreadex (NULL, 0, thread, channel, 0,
332 &channel->thread_id);
333 if (thread_handle == 0)
334 g_warning (G_STRLOC ": Error creating reader thread: %s",
336 else if (!CloseHandle (thread_handle))
337 g_warning (G_STRLOC ": Error closing thread handle: %s\n",
338 g_win32_error_message (GetLastError ()));
340 WaitForSingleObject (channel->space_avail_event, INFINITE);
344 buffer_read (GIOWin32Channel *channel,
353 LOCK (channel->mutex);
355 g_print ("reading from thread %#x %d bytes, rdp=%d, wrp=%d\n",
356 channel->thread_id, count, channel->rdp, channel->wrp);
358 if (channel->wrp == channel->rdp)
360 UNLOCK (channel->mutex);
362 g_print ("waiting for data from thread %#x\n", channel->thread_id);
363 WaitForSingleObject (channel->data_avail_event, INFINITE);
365 g_print ("done waiting for data from thread %#x\n", channel->thread_id);
366 LOCK (channel->mutex);
367 if (channel->wrp == channel->rdp && !channel->running)
370 g_print ("wrp==rdp, !running\n");
371 UNLOCK (channel->mutex);
373 return G_IO_STATUS_EOF;
377 if (channel->rdp < channel->wrp)
378 nbytes = channel->wrp - channel->rdp;
380 nbytes = BUFFER_SIZE - channel->rdp;
381 UNLOCK (channel->mutex);
382 nbytes = MIN (left, nbytes);
384 g_print ("moving %d bytes from thread %#x\n",
385 nbytes, channel->thread_id);
386 memcpy (dest, channel->buffer + channel->rdp, nbytes);
389 LOCK (channel->mutex);
390 channel->rdp = (channel->rdp + nbytes) % BUFFER_SIZE;
392 g_print ("setting space_avail for thread %#x\n", channel->thread_id);
393 SetEvent (channel->space_avail_event);
395 g_print ("for thread %#x: rdp=%d, wrp=%d\n",
396 channel->thread_id, channel->rdp, channel->wrp);
397 if (channel->running && channel->wrp == channel->rdp)
400 g_print ("resetting data_avail of thread %#x\n",
402 ResetEvent (channel->data_avail_event);
404 UNLOCK (channel->mutex);
406 /* We have no way to indicate any errors form the actual
407 * read() or recv() call in the reader thread. Should we have?
409 *bytes_read = count - left;
410 return (*bytes_read > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
413 static unsigned __stdcall
414 select_thread (void *parameter)
416 GIOWin32Channel *channel = parameter;
417 fd_set read_fds, write_fds, except_fds;
421 g_io_channel_ref ((GIOChannel *)channel);
424 g_print ("select_thread %#x: start fd:%d data_avail:%#x data_avail_noticed:%#x\n",
427 (guint) channel->data_avail_event,
428 (guint) channel->data_avail_noticed_event);
430 channel->rdp = channel->wrp = 0;
431 channel->running = TRUE;
433 SetEvent (channel->space_avail_event);
435 while (channel->running)
438 FD_ZERO (&write_fds);
439 FD_ZERO (&except_fds);
441 tmp = channel->watches;
444 GIOWin32Watch *watch = (GIOWin32Watch *)tmp->data;
446 if (watch->condition & (G_IO_IN | G_IO_HUP))
447 FD_SET (channel->fd, &read_fds);
448 if (watch->condition & G_IO_OUT)
449 FD_SET (channel->fd, &write_fds);
450 if (watch->condition & G_IO_ERR)
451 FD_SET (channel->fd, &except_fds);
456 g_print ("select_thread %#x: calling select() for%s%s%s\n",
458 (FD_ISSET (channel->fd, &read_fds) ? " IN" : ""),
459 (FD_ISSET (channel->fd, &write_fds) ? " OUT" : ""),
460 (FD_ISSET (channel->fd, &except_fds) ? " ERR" : ""));
462 n = select (1, &read_fds, &write_fds, &except_fds, NULL);
464 if (n == SOCKET_ERROR)
467 g_print ("select_thread %#x: select returned SOCKET_ERROR\n",
473 g_print ("select_thread %#x: got%s%s%s\n",
475 (FD_ISSET (channel->fd, &read_fds) ? " IN" : ""),
476 (FD_ISSET (channel->fd, &write_fds) ? " OUT" : ""),
477 (FD_ISSET (channel->fd, &except_fds) ? " ERR" : ""));
479 if (FD_ISSET (channel->fd, &read_fds))
480 channel->revents |= G_IO_IN;
481 if (FD_ISSET (channel->fd, &write_fds))
482 channel->revents |= G_IO_OUT;
483 if (FD_ISSET (channel->fd, &except_fds))
484 channel->revents |= G_IO_ERR;
487 g_print ("select_thread %#x: resetting data_avail_noticed, setting data_avail\n",
489 ResetEvent (channel->data_avail_noticed_event);
490 SetEvent (channel->data_avail_event);
492 LOCK (channel->mutex);
493 if (channel->needs_close)
495 UNLOCK (channel->mutex);
498 UNLOCK (channel->mutex);
501 g_print ("select_thread %#x: waiting for data_avail_noticed\n",
504 WaitForSingleObject (channel->data_avail_noticed_event, INFINITE);
506 g_print ("select_thread %#x: got data_avail_noticed\n",
510 channel->running = FALSE;
511 LOCK (channel->mutex);
512 if (channel->fd != -1)
514 /* DO NOT close the fd here */
519 g_print ("select_thread %#x: got error, setting data_avail\n",
521 SetEvent (channel->data_avail_event);
522 UNLOCK (channel->mutex);
524 g_io_channel_unref((GIOChannel *)channel);
526 /* No need to call _endthreadex(), the actual thread starter routine
527 * in MSVCRT (see crt/src/threadex.c:_threadstartex) calls
528 * _endthreadex() for us.
535 g_io_win32_prepare (GSource *source,
538 GIOWin32Watch *watch = (GIOWin32Watch *)source;
539 GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
540 GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
545 g_print ("g_io_win32_prepare: for thread %#x buffer_condition:%#x\n"
546 " watch->pollfd.events:%#x watch->pollfd.revents:%#x channel->revents:%#x\n",
547 channel->thread_id, buffer_condition,
548 watch->pollfd.events, watch->pollfd.revents, channel->revents);
550 if (channel->type == G_IO_WIN32_FILE_DESC)
552 LOCK (channel->mutex);
553 if (channel->running && channel->wrp == channel->rdp)
556 g_print ("g_io_win32_prepare: for thread %#x, setting channel->revents = 0\n",
558 channel->revents = 0;
560 UNLOCK (channel->mutex);
562 else if (channel->type == G_IO_WIN32_SOCKET)
564 channel->revents = 0;
567 g_print ("g_io_win32_prepare: for thread %#x, setting data_avail_noticed\n",
569 SetEvent (channel->data_avail_noticed_event);
571 g_print ("g_io_win32_prepare: thread %#x, there.\n",
575 return ((watch->condition & buffer_condition) == watch->condition);
579 g_io_win32_check (GSource *source)
582 GIOWin32Watch *watch = (GIOWin32Watch *)source;
583 GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
584 GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
587 g_print ("g_io_win32_check: for thread %#x buffer_condition:%#x\n"
588 " watch->pollfd.events:%#x watch->pollfd.revents:%#x channel->revents:%#x\n",
589 channel->thread_id, buffer_condition,
590 watch->pollfd.events, watch->pollfd.revents, channel->revents);
592 if (channel->type != G_IO_WIN32_WINDOWS_MESSAGES)
594 watch->pollfd.revents = (watch->pollfd.events & channel->revents);
598 return (PeekMessage (&msg, channel->hwnd, 0, 0, PM_NOREMOVE));
601 if (channel->type == G_IO_WIN32_SOCKET)
604 g_print ("g_io_win32_check: thread %#x, resetting data_avail\n",
606 ResetEvent (channel->data_avail_event);
608 g_print ("g_io_win32_check: thread %#x, there.\n",
612 return ((watch->pollfd.revents | buffer_condition) & watch->condition);
616 g_io_win32_dispatch (GSource *source,
617 GSourceFunc callback,
620 GIOFunc func = (GIOFunc)callback;
621 GIOWin32Watch *watch = (GIOWin32Watch *)source;
622 GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
626 g_warning (G_STRLOC ": GIOWin32Watch dispatched without callback\n"
627 "You must call g_source_connect().");
631 return (*func) (watch->channel,
632 (watch->pollfd.revents | buffer_condition) & watch->condition,
637 g_io_win32_finalize (GSource *source)
639 GIOWin32Watch *watch = (GIOWin32Watch *)source;
640 GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
643 g_print ("g_io_win32_finalize: channel with thread %#x\n",
646 channel->watches = g_slist_remove (channel->watches, watch);
648 SetEvent (channel->data_avail_noticed_event);
649 g_io_channel_unref (watch->channel);
652 #if defined(G_PLATFORM_WIN32) && defined(__GNUC__)
653 __declspec(dllexport)
655 GSourceFuncs g_io_watch_funcs = {
663 g_io_win32_create_watch (GIOChannel *channel,
664 GIOCondition condition,
665 unsigned (__stdcall *thread) (void *parameter))
667 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
668 GIOWin32Watch *watch;
671 source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
672 watch = (GIOWin32Watch *)source;
674 watch->channel = channel;
675 g_io_channel_ref (channel);
677 watch->condition = condition;
679 if (win32_channel->data_avail_event == NULL)
680 create_events (win32_channel);
682 watch->pollfd.fd = (gint) win32_channel->data_avail_event;
683 watch->pollfd.events = condition;
685 if (win32_channel->debug)
686 g_print ("g_io_win32_create_watch: fd:%d condition:%#x handle:%#x\n",
687 win32_channel->fd, condition, watch->pollfd.fd);
689 win32_channel->watches = g_slist_append (win32_channel->watches, watch);
691 if (win32_channel->thread_id == 0)
692 create_thread (win32_channel, condition, thread);
694 g_source_add_poll (source, &watch->pollfd);
700 g_io_win32_msg_read (GIOChannel *channel,
706 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
707 MSG msg; /* In case of alignment problems */
709 if (count < sizeof (MSG))
711 g_set_error(err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL,
712 _("Incorrect message size")); /* Informative enough error message? */
713 return G_IO_STATUS_ERROR;
716 if (win32_channel->debug)
717 g_print ("g_io_win32_msg_read: for %#x\n",
718 (guint) win32_channel->hwnd);
719 if (!PeekMessage (&msg, win32_channel->hwnd, 0, 0, PM_REMOVE))
720 return G_IO_STATUS_AGAIN;
722 memmove (buf, &msg, sizeof (MSG));
723 *bytes_read = sizeof (MSG);
725 return G_IO_STATUS_NORMAL;
729 g_io_win32_msg_write (GIOChannel *channel,
732 gsize *bytes_written,
735 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
738 if (count != sizeof (MSG))
740 g_set_error(err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL,
741 _("Incorrect message size")); /* Informative enough error message? */
742 return G_IO_STATUS_ERROR;
745 /* In case of alignment problems */
746 memmove (&msg, buf, sizeof (MSG));
747 if (!PostMessage (win32_channel->hwnd, msg.message, msg.wParam, msg.lParam))
749 gchar *emsg = g_win32_error_message (GetLastError ());
750 g_set_error(err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_FAILED, emsg);
752 return G_IO_STATUS_ERROR;
755 *bytes_written = sizeof (MSG);
757 return G_IO_STATUS_NORMAL;
761 g_io_win32_msg_close (GIOChannel *channel,
764 /* Nothing to be done. Or should we set hwnd to some invalid value? */
766 return G_IO_STATUS_NORMAL;
770 g_io_win32_free (GIOChannel *channel)
772 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
774 if (win32_channel->debug)
775 g_print ("thread %#x: freeing channel, fd: %d\n",
776 win32_channel->thread_id,
779 if (win32_channel->data_avail_event)
780 CloseHandle (win32_channel->data_avail_event);
781 if (win32_channel->space_avail_event)
782 CloseHandle (win32_channel->space_avail_event);
783 if (win32_channel->data_avail_noticed_event)
784 CloseHandle (win32_channel->data_avail_noticed_event);
785 DeleteCriticalSection (&win32_channel->mutex);
787 g_free (win32_channel->buffer);
788 g_slist_free (win32_channel->watches);
789 g_free (win32_channel);
793 g_io_win32_msg_create_watch (GIOChannel *channel,
794 GIOCondition condition)
796 GIOWin32Watch *watch;
799 source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
800 watch = (GIOWin32Watch *)source;
802 watch->channel = channel;
803 g_io_channel_ref (channel);
805 watch->condition = condition;
807 watch->pollfd.fd = G_WIN32_MSG_HANDLE;
808 watch->pollfd.events = condition;
810 g_source_add_poll (source, &watch->pollfd);
816 g_io_win32_fd_read (GIOChannel *channel,
822 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
825 if (win32_channel->debug)
826 g_print ("g_io_win32_fd_read: fd:%d count:%d\n",
827 win32_channel->fd, count);
829 if (win32_channel->thread_id)
831 return buffer_read (win32_channel, buf, count, bytes_read, err);
834 result = read (win32_channel->fd, buf, count);
836 if (win32_channel->debug)
837 g_print ("g_io_win32_fd_read: read() = %d\n", result);
847 return G_IO_STATUS_AGAIN;
850 g_set_error (err, G_IO_CHANNEL_ERROR,
851 g_io_channel_error_from_errno (errno),
853 return G_IO_STATUS_ERROR;
857 *bytes_read = result;
859 return (result > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
863 g_io_win32_fd_write (GIOChannel *channel,
866 gsize *bytes_written,
869 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
872 result = write (win32_channel->fd, buf, count);
873 if (win32_channel->debug)
874 g_print ("g_io_win32_fd_write: fd:%d count:%d = %d\n",
875 win32_channel->fd, count, result);
885 return G_IO_STATUS_AGAIN;
888 g_set_error (err, G_IO_CHANNEL_ERROR,
889 g_io_channel_error_from_errno (errno),
891 return G_IO_STATUS_ERROR;
895 *bytes_written = result;
897 return G_IO_STATUS_NORMAL;
901 g_io_win32_fd_seek (GIOChannel *channel,
906 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
923 whence = -1; /* Keep the compiler quiet */
924 g_assert_not_reached();
928 if (tmp_offset != offset)
930 g_set_error (err, G_IO_CHANNEL_ERROR,
931 g_io_channel_error_from_errno (EINVAL),
932 g_strerror (EINVAL));
933 return G_IO_STATUS_ERROR;
936 result = lseek (win32_channel->fd, tmp_offset, whence);
940 g_set_error (err, G_IO_CHANNEL_ERROR,
941 g_io_channel_error_from_errno (errno),
943 return G_IO_STATUS_ERROR;
946 return G_IO_STATUS_NORMAL;
950 g_io_win32_fd_close (GIOChannel *channel,
953 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
955 if (win32_channel->debug)
956 g_print ("thread %#x: closing fd %d\n",
957 win32_channel->thread_id,
959 LOCK (win32_channel->mutex);
960 if (win32_channel->running)
962 if (win32_channel->debug)
963 g_print ("thread %#x: running, marking fd %d for later close\n",
964 win32_channel->thread_id, win32_channel->fd);
965 win32_channel->running = FALSE;
966 win32_channel->needs_close = TRUE;
967 SetEvent (win32_channel->data_avail_event);
971 if (win32_channel->debug)
972 g_print ("closing fd %d\n", win32_channel->fd);
973 close (win32_channel->fd);
974 if (win32_channel->debug)
975 g_print ("closed fd %d, setting to -1\n",
977 win32_channel->fd = -1;
979 UNLOCK (win32_channel->mutex);
981 /* FIXME error detection? */
983 return G_IO_STATUS_NORMAL;
987 g_io_win32_fd_create_watch (GIOChannel *channel,
988 GIOCondition condition)
990 return g_io_win32_create_watch (channel, condition, read_thread);
994 g_io_win32_sock_read (GIOChannel *channel,
1000 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1002 GIOChannelError error;
1004 if (win32_channel->debug)
1005 g_print ("g_io_win32_sock_read: sockfd:%d count:%d\n",
1006 win32_channel->fd, count);
1007 #ifdef WE_NEED_TO_HANDLE_WSAEINTR
1010 result = recv (win32_channel->fd, buf, count, 0);
1012 if (win32_channel->debug)
1013 g_print ("g_io_win32_sock_read: recv:%d\n", result);
1015 if (result == SOCKET_ERROR)
1019 switch (WSAGetLastError ())
1022 error = G_IO_CHANNEL_ERROR_INVAL;
1024 case WSAEWOULDBLOCK:
1025 return G_IO_STATUS_AGAIN;
1026 #ifdef WE_NEED_TO_HANDLE_WSAEINTR /* not anymore with wsock2 ? */
1031 error = G_IO_CHANNEL_ERROR_FAILED;
1034 g_set_error(err, G_IO_CHANNEL_ERROR, error, _("Socket error"));
1035 return G_IO_STATUS_ERROR;
1036 /* FIXME get all errors, better error messages */
1040 *bytes_read = result;
1042 return (result > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
1047 g_io_win32_sock_write (GIOChannel *channel,
1050 gsize *bytes_written,
1053 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1055 GIOChannelError error;
1057 if (win32_channel->debug)
1058 g_print ("g_io_win32_sock_write: sockfd:%d count:%d\n",
1059 win32_channel->fd, count);
1060 #ifdef WE_NEED_TO_HANDLE_WSAEINTR
1063 result = send (win32_channel->fd, buf, count, 0);
1065 if (win32_channel->debug)
1066 g_print ("g_io_win32_sock_write: send:%d\n", result);
1068 if (result == SOCKET_ERROR)
1072 switch (WSAGetLastError ())
1075 error = G_IO_CHANNEL_ERROR_INVAL;
1077 case WSAEWOULDBLOCK:
1078 return G_IO_STATUS_AGAIN;
1079 #ifdef WE_NEED_TO_HANDLE_WSAEINTR /* not anymore with wsock2 ? */
1084 error = G_IO_CHANNEL_ERROR_FAILED;
1087 g_set_error(err, G_IO_CHANNEL_ERROR, error, _("Socket error"));
1088 return G_IO_STATUS_ERROR;
1089 /* FIXME get all errors, better error messages */
1093 *bytes_written = result;
1095 return G_IO_STATUS_NORMAL;
1100 g_io_win32_sock_close (GIOChannel *channel,
1103 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1105 LOCK(win32_channel->mutex);
1106 if (win32_channel->running)
1108 if (win32_channel->debug)
1109 g_print ("thread %#x: running, marking for later close\n",
1110 win32_channel->thread_id);
1111 win32_channel->running = FALSE;
1112 win32_channel->needs_close = TRUE;
1113 SetEvent(win32_channel->data_avail_noticed_event);
1115 if (win32_channel->fd != -1)
1117 if (win32_channel->debug)
1118 g_print ("thread %#x: closing socket %d\n",
1119 win32_channel->thread_id,
1122 closesocket (win32_channel->fd);
1123 win32_channel->fd = -1;
1125 UNLOCK(win32_channel->mutex);
1127 /* FIXME error detection? */
1129 return G_IO_STATUS_NORMAL;
1133 g_io_win32_sock_create_watch (GIOChannel *channel,
1134 GIOCondition condition)
1136 return g_io_win32_create_watch (channel, condition, select_thread);
1140 g_io_channel_new_file (const gchar *filename,
1144 int fid, flags, pmode;
1145 GIOChannel *channel;
1147 enum { /* Cheesy hack */
1154 g_return_val_if_fail (filename != NULL, NULL);
1155 g_return_val_if_fail (mode != NULL, NULL);
1156 g_return_val_if_fail ((error == NULL) || (*error == NULL), NULL);
1170 g_warning ("Invalid GIOFileMode %s.\n", mode);
1179 if (mode[2] == '\0')
1181 mode_num |= MODE_PLUS;
1186 g_warning ("Invalid GIOFileMode %s.\n", mode);
1197 flags = O_WRONLY | O_TRUNC | O_CREAT;
1201 flags = O_WRONLY | O_APPEND | O_CREAT;
1204 case MODE_R | MODE_PLUS:
1206 pmode = _S_IREAD | _S_IWRITE;
1208 case MODE_W | MODE_PLUS:
1209 flags = O_RDWR | O_TRUNC | O_CREAT;
1210 pmode = _S_IREAD | _S_IWRITE;
1212 case MODE_A | MODE_PLUS:
1213 flags = O_RDWR | O_APPEND | O_CREAT;
1214 pmode = _S_IREAD | _S_IWRITE;
1217 g_assert_not_reached ();
1222 /* always open 'untranslated' */
1223 fid = open (filename, flags | _O_BINARY, pmode);
1225 if (g_io_win32_get_debug_flag ())
1227 g_print ("g_io_channel_win32_new_file: open(\"%s\", ", filename);
1228 g_win32_print_access_mode (flags|_O_BINARY);
1229 g_print (",%#o)=%d\n", pmode, fid);
1234 g_set_error (error, G_FILE_ERROR,
1235 g_file_error_from_errno (errno),
1236 g_strerror (errno));
1237 return (GIOChannel *)NULL;
1240 channel = g_io_channel_win32_new_fd (fid);
1242 /* XXX: move this to g_io_channel_win32_new_fd () */
1243 channel->close_on_unref = TRUE;
1244 channel->is_seekable = TRUE;
1246 /* g_io_channel_win32_new_fd sets is_readable and is_writeable to
1247 * correspond to actual readability/writeability. Set to FALSE those
1248 * that mode doesn't allow
1253 channel->is_writeable = FALSE;
1257 channel->is_readable = FALSE;
1259 case MODE_R | MODE_PLUS:
1260 case MODE_W | MODE_PLUS:
1261 case MODE_A | MODE_PLUS:
1264 g_assert_not_reached ();
1271 g_io_win32_set_flags (GIOChannel *channel,
1275 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1277 if (win32_channel->debug)
1279 g_print ("g_io_win32_set_flags: ");
1280 g_win32_print_gioflags (flags);
1284 g_warning ("g_io_win32_set_flags () not implemented.\n");
1286 return G_IO_STATUS_NORMAL;
1290 g_io_win32_fd_get_flags_internal (GIOChannel *channel,
1293 GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
1297 if (st->st_mode & _S_IFIFO)
1299 channel->is_readable =
1300 (PeekNamedPipe ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL, NULL) != 0);
1301 channel->is_writeable =
1302 (WriteFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
1303 channel->is_seekable = FALSE;
1305 else if (st->st_mode & _S_IFCHR)
1307 /* XXX Seems there is no way to find out the readability of file
1308 * handles to device files (consoles, mostly) without doing a
1309 * blocking read. So punt, use st->st_mode.
1311 channel->is_readable = !!(st->st_mode & _S_IREAD);
1313 channel->is_writeable =
1314 (WriteFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
1316 /* XXX What about devices that actually *are* seekable? But
1317 * those would probably not be handled using the C runtime
1318 * anyway, but using Windows-specific code.
1320 channel->is_seekable = FALSE;
1324 channel->is_readable =
1325 (ReadFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
1326 channel->is_writeable =
1327 (WriteFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
1328 channel->is_seekable = TRUE;
1331 /* XXX: G_IO_FLAG_APPEND */
1332 /* XXX: G_IO_FLAG_NONBLOCK */
1338 g_io_win32_fd_get_flags (GIOChannel *channel)
1341 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1343 g_return_val_if_fail (win32_channel != NULL, 0);
1344 g_return_val_if_fail (win32_channel->type == G_IO_WIN32_FILE_DESC, 0);
1346 if (0 == fstat (win32_channel->fd, &st))
1347 return g_io_win32_fd_get_flags_internal (channel, &st);
1353 g_io_win32_msg_get_flags (GIOChannel *channel)
1359 g_io_win32_sock_get_flags (GIOChannel *channel)
1361 /* XXX Could do something here. */
1365 static GIOFuncs win32_channel_msg_funcs = {
1366 g_io_win32_msg_read,
1367 g_io_win32_msg_write,
1369 g_io_win32_msg_close,
1370 g_io_win32_msg_create_watch,
1372 g_io_win32_set_flags,
1373 g_io_win32_msg_get_flags,
1376 static GIOFuncs win32_channel_fd_funcs = {
1378 g_io_win32_fd_write,
1380 g_io_win32_fd_close,
1381 g_io_win32_fd_create_watch,
1383 g_io_win32_set_flags,
1384 g_io_win32_fd_get_flags,
1387 static GIOFuncs win32_channel_sock_funcs = {
1388 g_io_win32_sock_read,
1389 g_io_win32_sock_write,
1391 g_io_win32_sock_close,
1392 g_io_win32_sock_create_watch,
1394 g_io_win32_set_flags,
1395 g_io_win32_sock_get_flags,
1399 g_io_channel_win32_new_messages (guint hwnd)
1401 GIOWin32Channel *win32_channel = g_new (GIOWin32Channel, 1);
1402 GIOChannel *channel = (GIOChannel *)win32_channel;
1404 g_io_channel_init (channel);
1405 g_io_channel_win32_init (win32_channel);
1406 if (win32_channel->debug)
1407 g_print ("g_io_channel_win32_new_messages: hwnd = %ud\n", hwnd);
1408 channel->funcs = &win32_channel_msg_funcs;
1409 win32_channel->type = G_IO_WIN32_WINDOWS_MESSAGES;
1410 win32_channel->hwnd = (HWND) hwnd;
1412 /* XXX: check this. */
1413 channel->is_readable = IsWindow (win32_channel->hwnd);
1414 channel->is_writeable = IsWindow (win32_channel->hwnd);
1416 channel->is_seekable = FALSE;
1422 g_io_channel_win32_new_fd_internal (gint fd,
1425 GIOWin32Channel *win32_channel;
1426 GIOChannel *channel;
1428 win32_channel = g_new (GIOWin32Channel, 1);
1429 channel = (GIOChannel *)win32_channel;
1431 g_io_channel_init (channel);
1432 g_io_channel_win32_init (win32_channel);
1433 if (win32_channel->debug)
1434 g_print ("g_io_channel_win32_new_fd: %u\n", fd);
1435 channel->funcs = &win32_channel_fd_funcs;
1436 win32_channel->type = G_IO_WIN32_FILE_DESC;
1437 win32_channel->fd = fd;
1439 g_io_win32_fd_get_flags_internal (channel, st);
1445 g_io_channel_win32_new_fd (gint fd)
1449 if (fstat (fd, &st) == -1)
1451 g_warning (G_STRLOC ": %d isn't a C library file descriptor", fd);
1455 return g_io_channel_win32_new_fd_internal (fd, &st);
1459 g_io_channel_win32_get_fd (GIOChannel *channel)
1461 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1463 return win32_channel->fd;
1467 g_io_channel_win32_new_socket (int socket)
1469 GIOWin32Channel *win32_channel = g_new (GIOWin32Channel, 1);
1470 GIOChannel *channel = (GIOChannel *)win32_channel;
1472 g_io_channel_init (channel);
1473 g_io_channel_win32_init (win32_channel);
1474 if (win32_channel->debug)
1475 g_print ("g_io_channel_win32_new_socket: sockfd:%d\n", socket);
1476 channel->funcs = &win32_channel_sock_funcs;
1477 win32_channel->type = G_IO_WIN32_SOCKET;
1478 win32_channel->fd = socket;
1480 /* XXX: check this */
1481 channel->is_readable = TRUE;
1482 channel->is_writeable = TRUE;
1484 channel->is_seekable = FALSE;
1490 g_io_channel_unix_new (gint fd)
1494 if (fstat (fd, &st) == 0)
1495 return g_io_channel_win32_new_fd_internal (fd, &st);
1497 if (getsockopt (fd, SOL_SOCKET, SO_TYPE, NULL, NULL) != SO_ERROR)
1498 return g_io_channel_win32_new_socket(fd);
1500 g_warning (G_STRLOC ": %d is neither a file descriptor or a socket", fd);
1505 g_io_channel_unix_get_fd (GIOChannel *channel)
1507 return g_io_channel_win32_get_fd (channel);
1511 g_io_channel_win32_set_debug (GIOChannel *channel,
1514 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1516 win32_channel->debug = flag;
1520 g_io_channel_win32_poll (GPollFD *fds,
1526 g_return_val_if_fail (n_fds >= 0, 0);
1528 result = (*g_main_context_get_poll_func (NULL)) (fds, n_fds, timeout);
1534 g_io_channel_win32_make_pollfd (GIOChannel *channel,
1535 GIOCondition condition,
1538 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1540 if (win32_channel->data_avail_event == NULL)
1541 create_events (win32_channel);
1543 fd->fd = (gint) win32_channel->data_avail_event;
1544 fd->events = condition;
1546 if (win32_channel->thread_id == 0)
1548 if ((condition & G_IO_IN) && win32_channel->type == G_IO_WIN32_FILE_DESC)
1549 create_thread (win32_channel, condition, read_thread);
1550 else if (win32_channel->type == G_IO_WIN32_SOCKET)
1551 create_thread (win32_channel, condition, select_thread);
1555 /* Binary compatibility */
1557 g_io_channel_win32_new_stream_socket (int socket)
1559 return g_io_channel_win32_new_socket (socket);