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 2001-2003 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/.
33 * Bugs that are related to the code in this file:
35 * Bug 137968 - Sometimes a GIOFunc on Win32 is called with zero condition
36 * http://bugzilla.gnome.org/show_bug.cgi?id=137968
38 * Bug 324234 - Using g_io_add_watch_full() to wait for connect() to return on a non-blocking socket returns prematurely
39 * http://bugzilla.gnome.org/show_bug.cgi?id=324234
41 * Bug 331214 - g_io_channel async socket io stalls
42 * http://bugzilla.gnome.org/show_bug.cgi?id=331214
44 * Bug 338943 - Multiple watches on the same socket
45 * http://bugzilla.gnome.org/show_bug.cgi?id=338943
47 * Bug 357674 - 2 serious bugs in giowin32.c making glib iochannels useless
48 * http://bugzilla.gnome.org/show_bug.cgi?id=357674
50 * Bug 425156 - GIOChannel deadlocks on a win32 socket
51 * http://bugzilla.gnome.org/show_bug.cgi?id=425156
53 * Bug 468910 - giofunc condition=0
54 * http://bugzilla.gnome.org/show_bug.cgi?id=468910
56 * Bug 500246 - Bug fixes for giowin32
57 * http://bugzilla.gnome.org/show_bug.cgi?id=500246
59 * Bug 548278 - Async GETs connections are always terminated unexpectedly on windows
60 * http://bugzilla.gnome.org/show_bug.cgi?id=548278
62 * Bug 548536 - giowin32 problem when adding and removing watches
63 * http://bugzilla.gnome.org/show_bug.cgi?id=548536
65 * When fixing bugs related to the code in this file, either the above
66 * bugs or others, make sure that the test programs attached to the
67 * above bugs continue to work.
89 typedef struct _GIOWin32Channel GIOWin32Channel;
90 typedef struct _GIOWin32Watch GIOWin32Watch;
92 #define BUFFER_SIZE 4096
95 G_IO_WIN32_WINDOWS_MESSAGES, /* Windows messages */
97 G_IO_WIN32_FILE_DESC, /* Unix-like file descriptors from
98 * _open() or _pipe(), except for
99 * console IO. Separate thread to read
103 G_IO_WIN32_CONSOLE, /* Console IO (usually stdin, stdout, stderr) */
105 G_IO_WIN32_SOCKET /* Sockets. No separate thread. */
106 } GIOWin32ChannelType;
108 struct _GIOWin32Channel {
110 gint fd; /* Either a Unix-like file handle as provided
111 * by the Microsoft C runtime, or a SOCKET
112 * as provided by WinSock.
114 GIOWin32ChannelType type;
118 /* Field used by G_IO_WIN32_WINDOWS_MESSAGES channels */
119 HWND hwnd; /* Handle of window, or NULL */
121 /* Fields used by G_IO_WIN32_FILE_DESC channels. */
122 CRITICAL_SECTION mutex;
124 int direction; /* 0 means we read from it,
125 * 1 means we write to it.
128 gboolean running; /* Is reader or writer thread
129 * running. FALSE if EOF has been
130 * reached by the reader thread.
133 gboolean needs_close; /* If the channel has been closed while
134 * the reader thread was still running.
137 guint thread_id; /* If non-NULL the channel has or has
138 * had a reader or writer thread.
140 HANDLE data_avail_event;
144 /* Data is kept in a circular buffer. To be able to distinguish between
145 * empty and full buffers, we cannot fill it completely, but have to
146 * leave a one character gap.
148 * Data available is between indexes rdp and wrp-1 (modulo BUFFER_SIZE).
151 * Full: (wrp + 1) % BUFFER_SIZE == rdp
154 guchar *buffer; /* (Circular) buffer */
155 gint wrp, rdp; /* Buffer indices for writing and reading */
156 HANDLE space_avail_event;
158 /* Fields used by G_IO_WIN32_SOCKET channels */
162 gboolean write_would_have_blocked;
163 gboolean ever_writable;
166 #define LOCK(mutex) EnterCriticalSection (&mutex)
167 #define UNLOCK(mutex) LeaveCriticalSection (&mutex)
169 struct _GIOWin32Watch {
173 GIOCondition condition;
177 g_win32_print_access_mode (int flags)
179 g_print ("%s%s%s%s%s%s%s%s%s%s",
180 ((flags & 0x3) == _O_RDWR ? "O_RDWR" :
181 ((flags & 0x3) == _O_RDONLY ? "O_RDONLY" :
182 ((flags & 0x3) == _O_WRONLY ? "O_WRONLY" : "0"))),
183 (flags & _O_APPEND ? "|O_APPEND" : ""),
184 (flags & _O_RANDOM ? "|O_RANDOM" : ""),
185 (flags & _O_SEQUENTIAL ? "|O_SEQUENTIAL" : ""),
186 (flags & _O_TEMPORARY ? "|O_TEMPORARY" : ""),
187 (flags & _O_CREAT ? "|O_CREAT" : ""),
188 (flags & _O_TRUNC ? "|O_TRUNC" : ""),
189 (flags & _O_EXCL ? "|O_EXCL" : ""),
190 (flags & _O_TEXT ? "|O_TEXT" : ""),
191 (flags & _O_BINARY ? "|O_BINARY" : ""));
195 g_win32_print_gioflags (GIOFlags flags)
199 if (flags & G_IO_FLAG_APPEND)
200 bar = "|", g_print ("APPEND");
201 if (flags & G_IO_FLAG_NONBLOCK)
202 g_print ("%sNONBLOCK", bar), bar = "|";
203 if (flags & G_IO_FLAG_IS_READABLE)
204 g_print ("%sREADABLE", bar), bar = "|";
205 if (flags & G_IO_FLAG_IS_WRITEABLE)
206 g_print ("%sWRITEABLE", bar), bar = "|";
207 if (flags & G_IO_FLAG_IS_SEEKABLE)
208 g_print ("%sSEEKABLE", bar), bar = "|";
212 event_mask_to_string (int mask)
215 int checked_bits = 0;
221 #define BIT(n) checked_bits |= FD_##n; if (mask & FD_##n) bufp += sprintf (bufp, "%s" #n, (bufp>buf ? "|" : ""))
231 BIT (ROUTING_INTERFACE_CHANGE);
232 BIT (ADDRESS_LIST_CHANGE);
236 if ((mask & ~checked_bits) != 0)
237 bufp += sprintf (bufp, "|%#x", mask & ~checked_bits);
239 return g_quark_to_string (g_quark_from_string (buf));
243 condition_to_string (GIOCondition condition)
246 int checked_bits = 0;
252 #define BIT(n) checked_bits |= G_IO_##n; if (condition & G_IO_##n) bufp += sprintf (bufp, "%s" #n, (bufp>buf ? "|" : ""))
263 if ((condition & ~checked_bits) != 0)
264 bufp += sprintf (bufp, "|%#x", condition & ~checked_bits);
266 return g_quark_to_string (g_quark_from_string (buf));
270 g_io_win32_get_debug_flag (void)
272 return (getenv ("G_IO_WIN32_DEBUG") != NULL);
276 g_io_channel_win32_init (GIOWin32Channel *channel)
278 channel->debug = g_io_win32_get_debug_flag ();
279 channel->buffer = NULL;
280 channel->running = FALSE;
281 channel->needs_close = FALSE;
282 channel->thread_id = 0;
283 channel->data_avail_event = NULL;
284 channel->revents = 0;
285 channel->space_avail_event = NULL;
286 channel->event_mask = 0;
287 channel->last_events = 0;
288 channel->event = NULL;
289 channel->write_would_have_blocked = FALSE;
290 channel->ever_writable = FALSE;
291 InitializeCriticalSection (&channel->mutex);
295 create_events (GIOWin32Channel *channel)
297 SECURITY_ATTRIBUTES sec_attrs;
299 sec_attrs.nLength = sizeof (SECURITY_ATTRIBUTES);
300 sec_attrs.lpSecurityDescriptor = NULL;
301 sec_attrs.bInheritHandle = FALSE;
303 /* The data available event is manual reset, the space available event
304 * is automatic reset.
306 if (!(channel->data_avail_event = CreateEvent (&sec_attrs, TRUE, FALSE, NULL))
307 || !(channel->space_avail_event = CreateEvent (&sec_attrs, FALSE, FALSE, NULL)))
309 gchar *emsg = g_win32_error_message (GetLastError ());
310 g_error ("Error creating event: %s", emsg);
315 static unsigned __stdcall
316 read_thread (void *parameter)
318 GIOWin32Channel *channel = parameter;
322 g_io_channel_ref ((GIOChannel *)channel);
325 g_print ("read_thread %#x: start fd=%d, data_avail=%p space_avail=%p\n",
328 channel->data_avail_event,
329 channel->space_avail_event);
331 channel->direction = 0;
332 channel->buffer = g_malloc (BUFFER_SIZE);
333 channel->rdp = channel->wrp = 0;
334 channel->running = TRUE;
336 SetEvent (channel->space_avail_event);
338 LOCK (channel->mutex);
339 while (channel->running)
342 g_print ("read_thread %#x: rdp=%d, wrp=%d\n",
343 channel->thread_id, channel->rdp, channel->wrp);
344 if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
348 g_print ("read_thread %#x: resetting space_avail\n",
350 ResetEvent (channel->space_avail_event);
352 g_print ("read_thread %#x: waiting for space\n",
354 UNLOCK (channel->mutex);
355 WaitForSingleObject (channel->space_avail_event, INFINITE);
356 LOCK (channel->mutex);
358 g_print ("read_thread %#x: rdp=%d, wrp=%d\n",
359 channel->thread_id, channel->rdp, channel->wrp);
362 buffer = channel->buffer + channel->wrp;
364 /* Always leave at least one byte unused gap to be able to
365 * distinguish between the full and empty condition...
367 nbytes = MIN ((channel->rdp + BUFFER_SIZE - channel->wrp - 1) % BUFFER_SIZE,
368 BUFFER_SIZE - channel->wrp);
371 g_print ("read_thread %#x: calling read() for %d bytes\n",
372 channel->thread_id, nbytes);
374 UNLOCK (channel->mutex);
376 nbytes = read (channel->fd, buffer, nbytes);
378 LOCK (channel->mutex);
380 channel->revents = G_IO_IN;
382 channel->revents |= G_IO_HUP;
384 channel->revents |= G_IO_ERR;
387 g_print ("read_thread %#x: read() returned %d, rdp=%d, wrp=%d\n",
388 channel->thread_id, nbytes, channel->rdp, channel->wrp);
393 channel->wrp = (channel->wrp + nbytes) % BUFFER_SIZE;
395 g_print ("read_thread %#x: rdp=%d, wrp=%d, setting data_avail\n",
396 channel->thread_id, channel->rdp, channel->wrp);
397 SetEvent (channel->data_avail_event);
400 channel->running = FALSE;
401 if (channel->needs_close)
404 g_print ("read_thread %#x: channel fd %d needs closing\n",
405 channel->thread_id, channel->fd);
411 g_print ("read_thread %#x: EOF, rdp=%d, wrp=%d, setting data_avail\n",
412 channel->thread_id, channel->rdp, channel->wrp);
413 SetEvent (channel->data_avail_event);
414 UNLOCK (channel->mutex);
416 g_io_channel_unref ((GIOChannel *)channel);
418 /* No need to call _endthreadex(), the actual thread starter routine
419 * in MSVCRT (see crt/src/threadex.c:_threadstartex) calls
420 * _endthreadex() for us.
426 static unsigned __stdcall
427 write_thread (void *parameter)
429 GIOWin32Channel *channel = parameter;
433 g_io_channel_ref ((GIOChannel *)channel);
436 g_print ("write_thread %#x: start fd=%d, data_avail=%p space_avail=%p\n",
439 channel->data_avail_event,
440 channel->space_avail_event);
442 channel->direction = 1;
443 channel->buffer = g_malloc (BUFFER_SIZE);
444 channel->rdp = channel->wrp = 0;
445 channel->running = TRUE;
447 SetEvent (channel->space_avail_event);
449 /* We use the same event objects as for a reader thread, but with
450 * reversed meaning. So, space_avail is used if data is available
451 * for writing, and data_avail is used if space is available in the
455 LOCK (channel->mutex);
456 while (channel->running || channel->rdp != channel->wrp)
459 g_print ("write_thread %#x: rdp=%d, wrp=%d\n",
460 channel->thread_id, channel->rdp, channel->wrp);
461 if (channel->wrp == channel->rdp)
463 /* Buffer is empty. */
465 g_print ("write_thread %#x: resetting space_avail\n",
467 ResetEvent (channel->space_avail_event);
469 g_print ("write_thread %#x: waiting for data\n",
471 channel->revents = G_IO_OUT;
472 SetEvent (channel->data_avail_event);
473 UNLOCK (channel->mutex);
474 WaitForSingleObject (channel->space_avail_event, INFINITE);
476 LOCK (channel->mutex);
477 if (channel->rdp == channel->wrp)
481 g_print ("write_thread %#x: rdp=%d, wrp=%d\n",
482 channel->thread_id, channel->rdp, channel->wrp);
485 buffer = channel->buffer + channel->rdp;
486 if (channel->rdp < channel->wrp)
487 nbytes = channel->wrp - channel->rdp;
489 nbytes = BUFFER_SIZE - channel->rdp;
492 g_print ("write_thread %#x: calling write() for %d bytes\n",
493 channel->thread_id, nbytes);
495 UNLOCK (channel->mutex);
496 nbytes = write (channel->fd, buffer, nbytes);
497 LOCK (channel->mutex);
500 g_print ("write_thread %#x: write(%i) returned %d, rdp=%d, wrp=%d\n",
501 channel->thread_id, channel->fd, nbytes, channel->rdp, channel->wrp);
503 channel->revents = 0;
505 channel->revents |= G_IO_OUT;
506 else if (nbytes <= 0)
507 channel->revents |= G_IO_ERR;
509 channel->rdp = (channel->rdp + nbytes) % BUFFER_SIZE;
515 g_print ("write_thread: setting data_avail for thread %#x\n",
517 SetEvent (channel->data_avail_event);
520 channel->running = FALSE;
521 if (channel->needs_close)
524 g_print ("write_thread %#x: channel fd %d needs closing\n",
525 channel->thread_id, channel->fd);
530 UNLOCK (channel->mutex);
532 g_io_channel_unref ((GIOChannel *)channel);
538 create_thread (GIOWin32Channel *channel,
539 GIOCondition condition,
540 unsigned (__stdcall *thread) (void *parameter))
542 HANDLE thread_handle;
544 thread_handle = (HANDLE) _beginthreadex (NULL, 0, thread, channel, 0,
545 &channel->thread_id);
546 if (thread_handle == 0)
547 g_warning (G_STRLOC ": Error creating reader thread: %s",
549 else if (!CloseHandle (thread_handle))
550 g_warning (G_STRLOC ": Error closing thread handle: %s\n",
551 g_win32_error_message (GetLastError ()));
553 WaitForSingleObject (channel->space_avail_event, INFINITE);
557 buffer_read (GIOWin32Channel *channel,
566 LOCK (channel->mutex);
568 g_print ("reading from thread %#x %" G_GSIZE_FORMAT " bytes, rdp=%d, wrp=%d\n",
569 channel->thread_id, count, channel->rdp, channel->wrp);
571 if (channel->wrp == channel->rdp)
573 UNLOCK (channel->mutex);
575 g_print ("waiting for data from thread %#x\n", channel->thread_id);
576 WaitForSingleObject (channel->data_avail_event, INFINITE);
578 g_print ("done waiting for data from thread %#x\n", channel->thread_id);
579 LOCK (channel->mutex);
580 if (channel->wrp == channel->rdp && !channel->running)
583 g_print ("wrp==rdp, !running\n");
584 UNLOCK (channel->mutex);
586 return G_IO_STATUS_EOF;
590 if (channel->rdp < channel->wrp)
591 nbytes = channel->wrp - channel->rdp;
593 nbytes = BUFFER_SIZE - channel->rdp;
594 UNLOCK (channel->mutex);
595 nbytes = MIN (left, nbytes);
597 g_print ("moving %d bytes from thread %#x\n",
598 nbytes, channel->thread_id);
599 memcpy (dest, channel->buffer + channel->rdp, nbytes);
602 LOCK (channel->mutex);
603 channel->rdp = (channel->rdp + nbytes) % BUFFER_SIZE;
605 g_print ("setting space_avail for thread %#x\n", channel->thread_id);
606 SetEvent (channel->space_avail_event);
608 g_print ("for thread %#x: rdp=%d, wrp=%d\n",
609 channel->thread_id, channel->rdp, channel->wrp);
610 if (channel->running && channel->wrp == channel->rdp)
613 g_print ("resetting data_avail of thread %#x\n",
615 ResetEvent (channel->data_avail_event);
617 UNLOCK (channel->mutex);
619 /* We have no way to indicate any errors form the actual
620 * read() or recv() call in the reader thread. Should we have?
622 *bytes_read = count - left;
623 return (*bytes_read > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
628 buffer_write (GIOWin32Channel *channel,
631 gsize *bytes_written,
637 LOCK (channel->mutex);
639 g_print ("buffer_write: writing to thread %#x %" G_GSIZE_FORMAT " bytes, rdp=%d, wrp=%d\n",
640 channel->thread_id, count, channel->rdp, channel->wrp);
642 if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
646 g_print ("buffer_write: tid %#x: resetting data_avail\n",
648 ResetEvent (channel->data_avail_event);
650 g_print ("buffer_write: tid %#x: waiting for space\n",
652 UNLOCK (channel->mutex);
653 WaitForSingleObject (channel->data_avail_event, INFINITE);
654 LOCK (channel->mutex);
656 g_print ("buffer_write: tid %#x: rdp=%d, wrp=%d\n",
657 channel->thread_id, channel->rdp, channel->wrp);
660 nbytes = MIN ((channel->rdp + BUFFER_SIZE - channel->wrp - 1) % BUFFER_SIZE,
661 BUFFER_SIZE - channel->wrp);
663 UNLOCK (channel->mutex);
664 nbytes = MIN (left, nbytes);
666 g_print ("buffer_write: tid %#x: writing %d bytes\n",
667 channel->thread_id, nbytes);
668 memcpy (channel->buffer + channel->wrp, dest, nbytes);
671 LOCK (channel->mutex);
673 channel->wrp = (channel->wrp + nbytes) % BUFFER_SIZE;
675 g_print ("buffer_write: tid %#x: rdp=%d, wrp=%d, setting space_avail\n",
676 channel->thread_id, channel->rdp, channel->wrp);
677 SetEvent (channel->space_avail_event);
679 if ((channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
683 g_print ("buffer_write: tid %#x: resetting data_avail\n",
685 ResetEvent (channel->data_avail_event);
688 UNLOCK (channel->mutex);
690 /* We have no way to indicate any errors form the actual
691 * write() call in the writer thread. Should we have?
693 *bytes_written = count - left;
694 return (*bytes_written > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
699 g_io_win32_prepare (GSource *source,
702 GIOWin32Watch *watch = (GIOWin32Watch *)source;
703 GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
704 GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
710 g_print ("g_io_win32_prepare: source=%p channel=%p", source, channel);
712 switch (channel->type)
714 case G_IO_WIN32_WINDOWS_MESSAGES:
719 case G_IO_WIN32_CONSOLE:
724 case G_IO_WIN32_FILE_DESC:
726 g_print (" FD thread=%#x buffer_condition:{%s}"
727 "\n watch->pollfd.events:{%s} watch->pollfd.revents:{%s} channel->revents:{%s}",
728 channel->thread_id, condition_to_string (buffer_condition),
729 condition_to_string (watch->pollfd.events),
730 condition_to_string (watch->pollfd.revents),
731 condition_to_string (channel->revents));
733 LOCK (channel->mutex);
734 if (channel->running)
736 if (channel->direction == 0 && channel->wrp == channel->rdp)
739 g_print ("\n setting revents=0");
740 channel->revents = 0;
745 if (channel->direction == 1
746 && (channel->wrp + 1) % BUFFER_SIZE == channel->rdp)
749 g_print ("\n setting revents=0");
750 channel->revents = 0;
753 UNLOCK (channel->mutex);
756 case G_IO_WIN32_SOCKET:
760 if (watch->condition & G_IO_IN)
761 event_mask |= (FD_READ | FD_ACCEPT);
762 if (watch->condition & G_IO_OUT)
763 event_mask |= (FD_WRITE | FD_CONNECT);
764 event_mask |= FD_CLOSE;
766 if (channel->event_mask != event_mask /* || channel->event != watch->pollfd.fd*/)
769 g_print ("\n WSAEventSelect(%d,%p,{%s})",
770 channel->fd, (HANDLE) watch->pollfd.fd,
771 event_mask_to_string (event_mask));
772 if (WSAEventSelect (channel->fd, (HANDLE) watch->pollfd.fd,
773 event_mask) == SOCKET_ERROR)
775 channel->event_mask = event_mask;
777 channel->event = watch->pollfd.fd;
780 g_print ("\n setting last_events=0");
781 channel->last_events = 0;
783 if ((event_mask & FD_WRITE) &&
784 channel->ever_writable &&
785 !channel->write_would_have_blocked)
788 g_print (" WSASetEvent(%p)", (WSAEVENT) watch->pollfd.fd);
789 WSASetEvent ((WSAEVENT) watch->pollfd.fd);
795 g_assert_not_reached ();
801 return ((watch->condition & buffer_condition) == watch->condition);
805 g_io_win32_check (GSource *source)
808 GIOWin32Watch *watch = (GIOWin32Watch *)source;
809 GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
810 GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
811 WSANETWORKEVENTS events;
814 g_print ("g_io_win32_check: source=%p channel=%p", source, channel);
816 switch (channel->type)
818 case G_IO_WIN32_WINDOWS_MESSAGES:
821 return (PeekMessage (&msg, channel->hwnd, 0, 0, PM_NOREMOVE));
823 case G_IO_WIN32_FILE_DESC:
825 g_print (" FD thread=%#x buffer_condition=%s\n"
826 " watch->pollfd.events={%s} watch->pollfd.revents={%s} channel->revents={%s}\n",
827 channel->thread_id, condition_to_string (buffer_condition),
828 condition_to_string (watch->pollfd.events),
829 condition_to_string (watch->pollfd.revents),
830 condition_to_string (channel->revents));
832 watch->pollfd.revents = (watch->pollfd.events & channel->revents);
834 return ((watch->pollfd.revents | buffer_condition) & watch->condition);
836 case G_IO_WIN32_CONSOLE:
839 if (watch->channel->is_writeable)
841 else if (watch->channel->is_readable)
845 if (PeekConsoleInput ((HANDLE) watch->pollfd.fd, &buffer, 1, &n) &&
848 /* _kbhit() does quite complex processing to find out
849 * whether at least one of the key events pending corresponds
850 * to a "real" character that can be read.
855 /* Discard all other kinds of events */
856 ReadConsoleInput ((HANDLE) watch->pollfd.fd, &buffer, 1, &n);
861 case G_IO_WIN32_SOCKET:
864 if (channel->last_events & FD_WRITE)
867 g_print (" sock=%d event=%p last_events has FD_WRITE",
868 channel->fd, (HANDLE) watch->pollfd.fd);
872 WSAEnumNetworkEvents (channel->fd, 0, &events);
875 g_print ("\n revents={%s} condition={%s}"
876 "\n WSAEnumNetworkEvents(%d,0) sets events={%s}",
877 condition_to_string (watch->pollfd.revents),
878 condition_to_string (watch->condition),
880 event_mask_to_string (events.lNetworkEvents));
882 if (watch->pollfd.revents != 0 &&
883 events.lNetworkEvents == 0 &&
884 !(channel->event_mask & FD_WRITE))
886 channel->event_mask = 0;
888 g_print ("\n WSAEventSelect(%d,%p,{})",
889 channel->fd, (HANDLE) watch->pollfd.fd);
890 WSAEventSelect (channel->fd, (HANDLE) watch->pollfd.fd, 0);
892 g_print (" ResetEvent(%p)",
893 (HANDLE) watch->pollfd.fd);
894 ResetEvent ((HANDLE) watch->pollfd.fd);
896 else if (events.lNetworkEvents & FD_WRITE)
897 channel->ever_writable = TRUE;
898 channel->last_events = events.lNetworkEvents;
901 watch->pollfd.revents = 0;
902 if (channel->last_events & (FD_READ | FD_ACCEPT))
903 watch->pollfd.revents |= G_IO_IN;
905 if (channel->last_events & FD_WRITE)
906 watch->pollfd.revents |= G_IO_OUT;
909 /* We have called WSAEnumNetworkEvents() above but it didn't
912 if (events.lNetworkEvents & FD_CONNECT)
914 if (events.iErrorCode[FD_CONNECT_BIT] == 0)
915 watch->pollfd.revents |= G_IO_OUT;
917 watch->pollfd.revents |= (G_IO_HUP | G_IO_ERR);
919 if (watch->pollfd.revents == 0 && (channel->last_events & (FD_CLOSE)))
920 watch->pollfd.revents |= G_IO_HUP;
923 /* Regardless of WSAEnumNetworkEvents() result, if watching for
924 * writability, and if we have ever got a FD_WRITE event, and
925 * unless last write would have blocked, set G_IO_OUT. But never
926 * set both G_IO_OUT and G_IO_HUP.
928 if (!(watch->pollfd.revents & G_IO_HUP) &&
929 channel->ever_writable &&
930 !channel->write_would_have_blocked &&
931 (channel->event_mask & FD_WRITE))
932 watch->pollfd.revents |= G_IO_OUT;
935 g_print ("\n revents={%s} retval={%s}\n",
936 condition_to_string (watch->pollfd.revents),
937 condition_to_string ((watch->pollfd.revents | buffer_condition) & watch->condition));
939 return ((watch->pollfd.revents | buffer_condition) & watch->condition);
942 g_assert_not_reached ();
948 g_io_win32_dispatch (GSource *source,
949 GSourceFunc callback,
952 GIOFunc func = (GIOFunc)callback;
953 GIOWin32Watch *watch = (GIOWin32Watch *)source;
954 GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
955 GIOCondition buffer_condition = g_io_channel_get_buffer_condition (watch->channel);
959 g_warning (G_STRLOC ": GIOWin32Watch dispatched without callback\n"
960 "You must call g_source_connect().");
965 g_print ("g_io_win32_dispatch: pollfd.revents=%s condition=%s result=%s\n",
966 condition_to_string (watch->pollfd.revents),
967 condition_to_string (watch->condition),
968 condition_to_string ((watch->pollfd.revents | buffer_condition) & watch->condition));
970 return (*func) (watch->channel,
971 (watch->pollfd.revents | buffer_condition) & watch->condition,
976 g_io_win32_finalize (GSource *source)
978 GIOWin32Watch *watch = (GIOWin32Watch *)source;
979 GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel;
982 g_print ("g_io_win32_finalize: source=%p channel=%p", source, channel);
984 switch (channel->type)
986 case G_IO_WIN32_WINDOWS_MESSAGES:
991 case G_IO_WIN32_CONSOLE:
996 case G_IO_WIN32_FILE_DESC:
998 g_print (" FD thread=%#x", channel->thread_id);
1001 case G_IO_WIN32_SOCKET:
1003 g_print (" SOCK sock=%d", channel->fd);
1005 CloseHandle ((HANDLE) watch->pollfd.fd);
1007 channel->event_mask = 0;
1012 g_assert_not_reached ();
1017 g_io_channel_unref (watch->channel);
1020 GSourceFuncs g_io_watch_funcs = {
1023 g_io_win32_dispatch,
1028 g_io_win32_msg_read (GIOChannel *channel,
1034 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1035 MSG msg; /* In case of alignment problems */
1037 if (count < sizeof (MSG))
1039 g_set_error_literal (err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL,
1040 "Incorrect message size"); /* Informative enough error message? */
1041 return G_IO_STATUS_ERROR;
1044 if (win32_channel->debug)
1045 g_print ("g_io_win32_msg_read: channel=%p hwnd=%p\n",
1046 channel, win32_channel->hwnd);
1047 if (!PeekMessage (&msg, win32_channel->hwnd, 0, 0, PM_REMOVE))
1048 return G_IO_STATUS_AGAIN;
1050 memmove (buf, &msg, sizeof (MSG));
1051 *bytes_read = sizeof (MSG);
1053 return G_IO_STATUS_NORMAL;
1057 g_io_win32_msg_write (GIOChannel *channel,
1060 gsize *bytes_written,
1063 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1066 if (count != sizeof (MSG))
1068 g_set_error_literal (err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL,
1069 "Incorrect message size"); /* Informative enough error message? */
1070 return G_IO_STATUS_ERROR;
1073 /* In case of alignment problems */
1074 memmove (&msg, buf, sizeof (MSG));
1075 if (!PostMessage (win32_channel->hwnd, msg.message, msg.wParam, msg.lParam))
1077 gchar *emsg = g_win32_error_message (GetLastError ());
1078 g_set_error_literal (err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_FAILED, emsg);
1080 return G_IO_STATUS_ERROR;
1083 *bytes_written = sizeof (MSG);
1085 return G_IO_STATUS_NORMAL;
1089 g_io_win32_msg_close (GIOChannel *channel,
1092 /* Nothing to be done. Or should we set hwnd to some invalid value? */
1094 return G_IO_STATUS_NORMAL;
1098 g_io_win32_free (GIOChannel *channel)
1100 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1102 if (win32_channel->debug)
1103 g_print ("g_io_win32_free channel=%p fd=%d\n", channel, win32_channel->fd);
1105 if (win32_channel->data_avail_event)
1106 CloseHandle (win32_channel->data_avail_event);
1107 if (win32_channel->space_avail_event)
1108 CloseHandle (win32_channel->space_avail_event);
1109 if (win32_channel->type == G_IO_WIN32_SOCKET)
1110 WSAEventSelect (win32_channel->fd, NULL, 0);
1111 DeleteCriticalSection (&win32_channel->mutex);
1113 g_free (win32_channel->buffer);
1114 g_free (win32_channel);
1118 g_io_win32_msg_create_watch (GIOChannel *channel,
1119 GIOCondition condition)
1121 GIOWin32Watch *watch;
1124 source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
1125 watch = (GIOWin32Watch *)source;
1127 watch->channel = channel;
1128 g_io_channel_ref (channel);
1130 watch->condition = condition;
1132 watch->pollfd.fd = (gintptr) G_WIN32_MSG_HANDLE;
1133 watch->pollfd.events = condition;
1135 g_source_add_poll (source, &watch->pollfd);
1141 g_io_win32_fd_and_console_read (GIOChannel *channel,
1147 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1150 if (win32_channel->debug)
1151 g_print ("g_io_win32_fd_read: fd=%d count=%" G_GSIZE_FORMAT "\n",
1152 win32_channel->fd, count);
1154 if (win32_channel->thread_id)
1156 return buffer_read (win32_channel, buf, count, bytes_read, err);
1159 result = read (win32_channel->fd, buf, count);
1161 if (win32_channel->debug)
1162 g_print ("g_io_win32_fd_read: read() => %d\n", result);
1172 return G_IO_STATUS_AGAIN;
1175 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1176 g_io_channel_error_from_errno (errno),
1177 g_strerror (errno));
1178 return G_IO_STATUS_ERROR;
1182 *bytes_read = result;
1184 return (result > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF;
1188 g_io_win32_fd_and_console_write (GIOChannel *channel,
1191 gsize *bytes_written,
1194 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1197 if (win32_channel->thread_id)
1199 return buffer_write (win32_channel, buf, count, bytes_written, err);
1202 result = write (win32_channel->fd, buf, count);
1203 if (win32_channel->debug)
1204 g_print ("g_io_win32_fd_write: fd=%d count=%" G_GSIZE_FORMAT " => %d\n",
1205 win32_channel->fd, count, result);
1215 return G_IO_STATUS_AGAIN;
1218 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1219 g_io_channel_error_from_errno (errno),
1220 g_strerror (errno));
1221 return G_IO_STATUS_ERROR;
1225 *bytes_written = result;
1227 return G_IO_STATUS_NORMAL;
1231 g_io_win32_fd_seek (GIOChannel *channel,
1236 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1253 whence = -1; /* Keep the compiler quiet */
1254 g_assert_not_reached ();
1258 tmp_offset = offset;
1259 if (tmp_offset != offset)
1261 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1262 g_io_channel_error_from_errno (EINVAL),
1263 g_strerror (EINVAL));
1264 return G_IO_STATUS_ERROR;
1267 result = lseek (win32_channel->fd, tmp_offset, whence);
1271 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1272 g_io_channel_error_from_errno (errno),
1273 g_strerror (errno));
1274 return G_IO_STATUS_ERROR;
1277 return G_IO_STATUS_NORMAL;
1281 g_io_win32_fd_close (GIOChannel *channel,
1284 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1286 if (win32_channel->debug)
1287 g_print ("g_io_win32_fd_close: thread=%#x: fd=%d\n",
1288 win32_channel->thread_id,
1290 LOCK (win32_channel->mutex);
1291 if (win32_channel->running)
1293 if (win32_channel->debug)
1294 g_print ("thread %#x: running, marking fd %d for later close\n",
1295 win32_channel->thread_id, win32_channel->fd);
1296 win32_channel->running = FALSE;
1297 win32_channel->needs_close = TRUE;
1298 if (win32_channel->direction == 0)
1299 SetEvent (win32_channel->data_avail_event);
1301 SetEvent (win32_channel->space_avail_event);
1305 if (win32_channel->debug)
1306 g_print ("closing fd %d\n", win32_channel->fd);
1307 close (win32_channel->fd);
1308 if (win32_channel->debug)
1309 g_print ("closed fd %d, setting to -1\n",
1311 win32_channel->fd = -1;
1313 UNLOCK (win32_channel->mutex);
1315 /* FIXME error detection? */
1317 return G_IO_STATUS_NORMAL;
1321 g_io_win32_fd_create_watch (GIOChannel *channel,
1322 GIOCondition condition)
1324 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1325 GSource *source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
1326 GIOWin32Watch *watch = (GIOWin32Watch *)source;
1328 watch->channel = channel;
1329 g_io_channel_ref (channel);
1331 watch->condition = condition;
1333 if (win32_channel->data_avail_event == NULL)
1334 create_events (win32_channel);
1336 watch->pollfd.fd = (gintptr) win32_channel->data_avail_event;
1337 watch->pollfd.events = condition;
1339 if (win32_channel->debug)
1340 g_print ("g_io_win32_fd_create_watch: channel=%p fd=%d condition={%s} event=%p\n",
1341 channel, win32_channel->fd,
1342 condition_to_string (condition), (HANDLE) watch->pollfd.fd);
1344 LOCK (win32_channel->mutex);
1345 if (win32_channel->thread_id == 0)
1347 if (condition & G_IO_IN)
1348 create_thread (win32_channel, condition, read_thread);
1349 else if (condition & G_IO_OUT)
1350 create_thread (win32_channel, condition, write_thread);
1353 g_source_add_poll (source, &watch->pollfd);
1354 UNLOCK (win32_channel->mutex);
1360 g_io_win32_console_close (GIOChannel *channel,
1363 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1365 if (close (win32_channel->fd) < 0)
1367 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1368 g_io_channel_error_from_errno (errno),
1369 g_strerror (errno));
1370 return G_IO_STATUS_ERROR;
1373 return G_IO_STATUS_NORMAL;
1377 g_io_win32_console_create_watch (GIOChannel *channel,
1378 GIOCondition condition)
1380 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1381 GSource *source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
1382 GIOWin32Watch *watch = (GIOWin32Watch *)source;
1384 watch->channel = channel;
1385 g_io_channel_ref (channel);
1387 watch->condition = condition;
1389 watch->pollfd.fd = _get_osfhandle (win32_channel->fd);
1390 watch->pollfd.events = condition;
1392 g_source_add_poll (source, &watch->pollfd);
1398 g_io_win32_sock_read (GIOChannel *channel,
1404 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1406 GIOChannelError error;
1409 if (win32_channel->debug)
1410 g_print ("g_io_win32_sock_read: channel=%p sock=%d count=%" G_GSIZE_FORMAT,
1411 channel, win32_channel->fd, count);
1413 result = recv (win32_channel->fd, buf, count, 0);
1414 if (result == SOCKET_ERROR)
1415 winsock_error = WSAGetLastError ();
1417 if (win32_channel->debug)
1418 g_print (" recv=%d", result);
1420 if (result == SOCKET_ERROR)
1422 gchar *emsg = g_win32_error_message (winsock_error);
1424 if (win32_channel->debug)
1425 g_print (" %s\n", emsg);
1429 switch (winsock_error)
1432 error = G_IO_CHANNEL_ERROR_INVAL;
1434 case WSAEWOULDBLOCK:
1436 return G_IO_STATUS_AGAIN;
1438 error = G_IO_CHANNEL_ERROR_FAILED;
1441 g_set_error_literal (err, G_IO_CHANNEL_ERROR, error, emsg);
1444 return G_IO_STATUS_ERROR;
1448 if (win32_channel->debug)
1450 *bytes_read = result;
1452 return G_IO_STATUS_EOF;
1454 return G_IO_STATUS_NORMAL;
1459 g_io_win32_sock_write (GIOChannel *channel,
1462 gsize *bytes_written,
1465 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1467 GIOChannelError error;
1470 if (win32_channel->debug)
1471 g_print ("g_io_win32_sock_write: channel=%p sock=%d count=%" G_GSIZE_FORMAT,
1472 channel, win32_channel->fd, count);
1474 result = send (win32_channel->fd, buf, count, 0);
1475 if (result == SOCKET_ERROR)
1476 winsock_error = WSAGetLastError ();
1478 if (win32_channel->debug)
1479 g_print (" send=%d", result);
1481 if (result == SOCKET_ERROR)
1483 gchar *emsg = g_win32_error_message (winsock_error);
1485 if (win32_channel->debug)
1486 g_print (" %s\n", emsg);
1490 switch (winsock_error)
1493 error = G_IO_CHANNEL_ERROR_INVAL;
1495 case WSAEWOULDBLOCK:
1496 win32_channel->write_would_have_blocked = TRUE;
1497 win32_channel->last_events = 0;
1499 return G_IO_STATUS_AGAIN;
1501 error = G_IO_CHANNEL_ERROR_FAILED;
1504 g_set_error_literal (err, G_IO_CHANNEL_ERROR, error, emsg);
1507 return G_IO_STATUS_ERROR;
1511 if (win32_channel->debug)
1513 *bytes_written = result;
1514 win32_channel->write_would_have_blocked = FALSE;
1516 return G_IO_STATUS_NORMAL;
1521 g_io_win32_sock_close (GIOChannel *channel,
1524 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1526 if (win32_channel->fd != -1)
1528 if (win32_channel->debug)
1529 g_print ("g_io_win32_sock_close: channel=%p sock=%d\n",
1530 channel, win32_channel->fd);
1532 closesocket (win32_channel->fd);
1533 win32_channel->fd = -1;
1536 /* FIXME error detection? */
1538 return G_IO_STATUS_NORMAL;
1542 g_io_win32_sock_create_watch (GIOChannel *channel,
1543 GIOCondition condition)
1545 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1546 GSource *source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch));
1547 GIOWin32Watch *watch = (GIOWin32Watch *)source;
1549 watch->channel = channel;
1550 g_io_channel_ref (channel);
1552 watch->condition = condition;
1554 if (win32_channel->event == 0)
1555 win32_channel->event = WSACreateEvent ();
1557 watch->pollfd.fd = (gintptr) win32_channel->event;
1558 watch->pollfd.events = condition;
1560 if (win32_channel->debug)
1561 g_print ("g_io_win32_sock_create_watch: channel=%p sock=%d event=%p condition={%s}\n",
1562 channel, win32_channel->fd, (HANDLE) watch->pollfd.fd,
1563 condition_to_string (watch->condition));
1565 g_source_add_poll (source, &watch->pollfd);
1571 g_io_channel_new_file (const gchar *filename,
1575 int fid, flags, pmode;
1576 GIOChannel *channel;
1578 enum { /* Cheesy hack */
1585 g_return_val_if_fail (filename != NULL, NULL);
1586 g_return_val_if_fail (mode != NULL, NULL);
1587 g_return_val_if_fail ((error == NULL) || (*error == NULL), NULL);
1601 g_warning ("Invalid GIOFileMode %s.\n", mode);
1610 if (mode[2] == '\0')
1612 mode_num |= MODE_PLUS;
1617 g_warning ("Invalid GIOFileMode %s.\n", mode);
1628 flags = O_WRONLY | O_TRUNC | O_CREAT;
1632 flags = O_WRONLY | O_APPEND | O_CREAT;
1635 case MODE_R | MODE_PLUS:
1637 pmode = _S_IREAD | _S_IWRITE;
1639 case MODE_W | MODE_PLUS:
1640 flags = O_RDWR | O_TRUNC | O_CREAT;
1641 pmode = _S_IREAD | _S_IWRITE;
1643 case MODE_A | MODE_PLUS:
1644 flags = O_RDWR | O_APPEND | O_CREAT;
1645 pmode = _S_IREAD | _S_IWRITE;
1648 g_assert_not_reached ();
1652 /* always open 'untranslated' */
1653 fid = g_open (filename, flags | _O_BINARY, pmode);
1655 if (g_io_win32_get_debug_flag ())
1657 g_print ("g_io_channel_win32_new_file: open(\"%s\",", filename);
1658 g_win32_print_access_mode (flags|_O_BINARY);
1659 g_print (",%#o)=%d\n", pmode, fid);
1664 g_set_error_literal (error, G_FILE_ERROR,
1665 g_file_error_from_errno (errno),
1666 g_strerror (errno));
1667 return (GIOChannel *)NULL;
1670 channel = g_io_channel_win32_new_fd (fid);
1672 /* XXX: move this to g_io_channel_win32_new_fd () */
1673 channel->close_on_unref = TRUE;
1674 channel->is_seekable = TRUE;
1676 /* g_io_channel_win32_new_fd sets is_readable and is_writeable to
1677 * correspond to actual readability/writeability. Set to FALSE those
1678 * that mode doesn't allow
1683 channel->is_writeable = FALSE;
1687 channel->is_readable = FALSE;
1689 case MODE_R | MODE_PLUS:
1690 case MODE_W | MODE_PLUS:
1691 case MODE_A | MODE_PLUS:
1694 g_assert_not_reached ();
1701 #if !defined (_WIN64)
1703 #undef g_io_channel_new_file
1705 /* Binary compatibility version. Not for newly compiled code. */
1708 g_io_channel_new_file (const gchar *filename,
1712 gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, error);
1715 if (utf8_filename == NULL)
1718 retval = g_io_channel_new_file_utf8 (utf8_filename, mode, error);
1720 g_free (utf8_filename);
1728 g_io_win32_unimpl_set_flags (GIOChannel *channel,
1732 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1734 if (win32_channel->debug)
1736 g_print ("g_io_win32_unimpl_set_flags: ");
1737 g_win32_print_gioflags (flags);
1741 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1742 G_IO_CHANNEL_ERROR_FAILED,
1743 "Not implemented on Win32");
1745 return G_IO_STATUS_ERROR;
1749 g_io_win32_fd_get_flags_internal (GIOChannel *channel,
1752 GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
1756 if (st->st_mode & _S_IFIFO)
1758 channel->is_readable =
1759 (PeekNamedPipe ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL, NULL) != 0) || GetLastError () == ERROR_BROKEN_PIPE;
1760 channel->is_writeable =
1761 (WriteFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
1762 channel->is_seekable = FALSE;
1766 channel->is_readable =
1767 (ReadFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
1768 channel->is_writeable =
1769 (WriteFile ((HANDLE) _get_osfhandle (win32_channel->fd), &c, 0, &count, NULL) != 0);
1770 channel->is_seekable = TRUE;
1773 /* XXX: G_IO_FLAG_APPEND */
1774 /* XXX: G_IO_FLAG_NONBLOCK */
1780 g_io_win32_fd_get_flags (GIOChannel *channel)
1783 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1785 g_return_val_if_fail (win32_channel != NULL, 0);
1786 g_return_val_if_fail (win32_channel->type == G_IO_WIN32_FILE_DESC, 0);
1788 if (0 == fstat (win32_channel->fd, &st))
1789 return g_io_win32_fd_get_flags_internal (channel, &st);
1795 g_io_win32_console_get_flags_internal (GIOChannel *channel)
1797 GIOWin32Channel *win32_channel = (GIOWin32Channel *) channel;
1798 HANDLE handle = (HANDLE) _get_osfhandle (win32_channel->fd);
1801 INPUT_RECORD record;
1803 channel->is_readable = PeekConsoleInput (handle, &record, 1, &count);
1804 channel->is_writeable = WriteFile (handle, &c, 0, &count, NULL);
1805 channel->is_seekable = FALSE;
1811 g_io_win32_console_get_flags (GIOChannel *channel)
1813 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1815 g_return_val_if_fail (win32_channel != NULL, 0);
1816 g_return_val_if_fail (win32_channel->type == G_IO_WIN32_CONSOLE, 0);
1818 return g_io_win32_console_get_flags_internal (channel);
1822 g_io_win32_msg_get_flags (GIOChannel *channel)
1828 g_io_win32_sock_set_flags (GIOChannel *channel,
1832 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
1835 if (win32_channel->debug)
1837 g_print ("g_io_win32_sock_set_flags: ");
1838 g_win32_print_gioflags (flags);
1842 if (flags & G_IO_FLAG_NONBLOCK)
1845 if (ioctlsocket (win32_channel->fd, FIONBIO, &arg) == SOCKET_ERROR)
1847 gchar *emsg = g_win32_error_message (WSAGetLastError ());
1849 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1850 G_IO_CHANNEL_ERROR_FAILED,
1854 return G_IO_STATUS_ERROR;
1860 if (ioctlsocket (win32_channel->fd, FIONBIO, &arg) == SOCKET_ERROR)
1862 gchar *emsg = g_win32_error_message (WSAGetLastError ());
1864 g_set_error_literal (err, G_IO_CHANNEL_ERROR,
1865 G_IO_CHANNEL_ERROR_FAILED,
1869 return G_IO_STATUS_ERROR;
1873 return G_IO_STATUS_NORMAL;
1877 g_io_win32_sock_get_flags (GIOChannel *channel)
1879 /* Could we do something here? */
1883 static GIOFuncs win32_channel_msg_funcs = {
1884 g_io_win32_msg_read,
1885 g_io_win32_msg_write,
1887 g_io_win32_msg_close,
1888 g_io_win32_msg_create_watch,
1890 g_io_win32_unimpl_set_flags,
1891 g_io_win32_msg_get_flags,
1894 static GIOFuncs win32_channel_fd_funcs = {
1895 g_io_win32_fd_and_console_read,
1896 g_io_win32_fd_and_console_write,
1898 g_io_win32_fd_close,
1899 g_io_win32_fd_create_watch,
1901 g_io_win32_unimpl_set_flags,
1902 g_io_win32_fd_get_flags,
1905 static GIOFuncs win32_channel_console_funcs = {
1906 g_io_win32_fd_and_console_read,
1907 g_io_win32_fd_and_console_write,
1909 g_io_win32_console_close,
1910 g_io_win32_console_create_watch,
1912 g_io_win32_unimpl_set_flags,
1913 g_io_win32_console_get_flags,
1916 static GIOFuncs win32_channel_sock_funcs = {
1917 g_io_win32_sock_read,
1918 g_io_win32_sock_write,
1920 g_io_win32_sock_close,
1921 g_io_win32_sock_create_watch,
1923 g_io_win32_sock_set_flags,
1924 g_io_win32_sock_get_flags,
1928 #if GLIB_SIZEOF_VOID_P == 8
1929 g_io_channel_win32_new_messages (gsize hwnd)
1931 g_io_channel_win32_new_messages (guint hwnd)
1934 GIOWin32Channel *win32_channel = g_new (GIOWin32Channel, 1);
1935 GIOChannel *channel = (GIOChannel *)win32_channel;
1937 g_io_channel_init (channel);
1938 g_io_channel_win32_init (win32_channel);
1939 if (win32_channel->debug)
1940 g_print ("g_io_channel_win32_new_messages: channel=%p hwnd=%p\n",
1941 channel, (HWND) hwnd);
1942 channel->funcs = &win32_channel_msg_funcs;
1943 win32_channel->type = G_IO_WIN32_WINDOWS_MESSAGES;
1944 win32_channel->hwnd = (HWND) hwnd;
1946 /* XXX: check this. */
1947 channel->is_readable = IsWindow (win32_channel->hwnd);
1948 channel->is_writeable = IsWindow (win32_channel->hwnd);
1950 channel->is_seekable = FALSE;
1956 g_io_channel_win32_new_fd_internal (gint fd,
1959 GIOWin32Channel *win32_channel;
1960 GIOChannel *channel;
1962 win32_channel = g_new (GIOWin32Channel, 1);
1963 channel = (GIOChannel *)win32_channel;
1965 g_io_channel_init (channel);
1966 g_io_channel_win32_init (win32_channel);
1968 win32_channel->fd = fd;
1970 if (win32_channel->debug)
1971 g_print ("g_io_channel_win32_new_fd: channel=%p fd=%u\n",
1974 if (st->st_mode & _S_IFCHR) /* console */
1976 channel->funcs = &win32_channel_console_funcs;
1977 win32_channel->type = G_IO_WIN32_CONSOLE;
1978 g_io_win32_console_get_flags_internal (channel);
1982 channel->funcs = &win32_channel_fd_funcs;
1983 win32_channel->type = G_IO_WIN32_FILE_DESC;
1984 g_io_win32_fd_get_flags_internal (channel, st);
1991 g_io_channel_win32_new_fd (gint fd)
1995 if (fstat (fd, &st) == -1)
1997 g_warning (G_STRLOC ": %d isn't a C library file descriptor", fd);
2001 return g_io_channel_win32_new_fd_internal (fd, &st);
2005 g_io_channel_win32_get_fd (GIOChannel *channel)
2007 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
2009 return win32_channel->fd;
2013 g_io_channel_win32_new_socket (int socket)
2015 GIOWin32Channel *win32_channel = g_new (GIOWin32Channel, 1);
2016 GIOChannel *channel = (GIOChannel *)win32_channel;
2018 g_io_channel_init (channel);
2019 g_io_channel_win32_init (win32_channel);
2020 if (win32_channel->debug)
2021 g_print ("g_io_channel_win32_new_socket: channel=%p sock=%d\n",
2023 channel->funcs = &win32_channel_sock_funcs;
2024 win32_channel->type = G_IO_WIN32_SOCKET;
2025 win32_channel->fd = socket;
2027 channel->is_readable = TRUE;
2028 channel->is_writeable = TRUE;
2029 channel->is_seekable = FALSE;
2035 g_io_channel_unix_new (gint fd)
2037 gboolean is_fd, is_socket;
2041 is_fd = (fstat (fd, &st) == 0);
2043 optlen = sizeof (optval);
2044 is_socket = (getsockopt (fd, SOL_SOCKET, SO_TYPE, (char *) &optval, &optlen) != SOCKET_ERROR);
2046 if (is_fd && is_socket)
2047 g_warning (G_STRLOC ": %d is both a file descriptor and a socket, file descriptor interpretation assumed.", fd);
2050 return g_io_channel_win32_new_fd_internal (fd, &st);
2053 return g_io_channel_win32_new_socket(fd);
2055 g_warning (G_STRLOC ": %d is neither a file descriptor or a socket", fd);
2061 g_io_channel_unix_get_fd (GIOChannel *channel)
2063 return g_io_channel_win32_get_fd (channel);
2067 g_io_channel_win32_set_debug (GIOChannel *channel,
2070 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
2072 win32_channel->debug = flag;
2076 g_io_channel_win32_poll (GPollFD *fds,
2082 g_return_val_if_fail (n_fds >= 0, 0);
2084 result = (*g_main_context_get_poll_func (NULL)) (fds, n_fds, timeout);
2090 g_io_channel_win32_make_pollfd (GIOChannel *channel,
2091 GIOCondition condition,
2094 GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel;
2096 switch (win32_channel->type)
2098 case G_IO_WIN32_FILE_DESC:
2099 if (win32_channel->data_avail_event == NULL)
2100 create_events (win32_channel);
2102 fd->fd = (gintptr) win32_channel->data_avail_event;
2104 if (win32_channel->thread_id == 0)
2106 /* Is it meaningful for a file descriptor to be polled for
2107 * both IN and OUT? For what kind of file descriptor would
2108 * that be? Doesn't seem to make sense, in practise the file
2109 * descriptors handled here are always read or write ends of
2110 * pipes surely, and thus unidirectional.
2112 if (condition & G_IO_IN)
2113 create_thread (win32_channel, condition, read_thread);
2114 else if (condition & G_IO_OUT)
2115 create_thread (win32_channel, condition, write_thread);
2119 case G_IO_WIN32_CONSOLE:
2120 fd->fd = _get_osfhandle (win32_channel->fd);
2123 case G_IO_WIN32_SOCKET:
2124 fd->fd = (gintptr) WSACreateEvent ();
2127 case G_IO_WIN32_WINDOWS_MESSAGES:
2128 fd->fd = G_WIN32_MSG_HANDLE;
2132 g_assert_not_reached ();
2136 fd->events = condition;
2139 /* Binary compatibility */
2141 g_io_channel_win32_new_stream_socket (int socket)
2143 return g_io_channel_win32_new_socket (socket);
2146 #define __G_IO_WIN32_C__
2147 #include "galiasdef.c"