3 Copyright 1996, 1997, 1998, 1999, 2000 Red Hat, Inc.
5 Written by Christopher Faylor of Cygnus Solutions
8 This file is part of Cygwin.
10 This software is a copyrighted work licensed under the terms of the
11 Cygwin license. Please consult the file "CYGWIN_LICENSE" for
15 * The following line means that the BSD socket
16 * definitions for fd_set, FD_ISSET etc. are used in this
20 #define __INSIDE_CYGWIN_NET__
25 #include <sys/socket.h>
38 * All these defines below should be in sys/types.h
39 * but because of the includes above, they may not have
40 * been included. We create special UNIX_xxxx versions here.
44 #define NBBY 8 /* number of bits in a byte */
48 * Select uses bit masks of file descriptors in longs.
49 * These macros manipulate such bit fields (the filesystem macros use chars).
50 * FD_SETSIZE may be defined by the user, but the default here
51 * should be >= NOFILE (param.h).
55 #define UNIX_NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */
57 #define unix_howmany(x,y) (((x)+((y)-1))/(y))
60 #define unix_fd_set fd_set
62 #define NULL_fd_set ((fd_set *)NULL)
63 #define sizeof_fd_set(n) \
64 ((unsigned) (NULL_fd_set->fds_bits + unix_howmany((n), UNIX_NFDBITS)))
65 #define UNIX_FD_SET(n, p) \
66 ((p)->fds_bits[(n)/UNIX_NFDBITS] |= (1L << ((n) % UNIX_NFDBITS)))
67 #define UNIX_FD_CLR(n, p) \
68 ((p)->fds_bits[(n)/UNIX_NFDBITS] &= ~(1L << ((n) % UNIX_NFDBITS)))
69 #define UNIX_FD_ISSET(n, p) \
70 ((p)->fds_bits[(n)/UNIX_NFDBITS] & (1L << ((n) % UNIX_NFDBITS)))
71 #define UNIX_FD_ZERO(p, n) \
72 bzero ((caddr_t)(p), sizeof_fd_set ((n)))
74 #define allocfd_set(n) ((fd_set *) memset (alloca (sizeof_fd_set (n)), 0, sizeof_fd_set (n)))
75 #define copyfd_set(to, from, n) memcpy (to, from, sizeof_fd_set (n));
77 /* Make a fhandler_foo::ready_for_ready method.
78 Assumption: The "ready_for_read" methods are called with one level of
80 #define MAKEready(what) \
82 fhandler_##what::ready_for_read (int fd, DWORD howlong, int ignra) \
84 select_record me (this); \
86 (void) select_read (&me); \
87 while (!peek_##what (&me, ignra) && howlong == INFINITE) \
88 if (fd >= 0 && dtable.not_open (fd)) \
90 else if (WaitForSingleObject (signal_arrived, 10) == WAIT_OBJECT_0) \
92 return me.read_ready; \
95 #define set_handle_or_return_if_not_open(h, s) \
96 h = (s)->fh->get_handle (); \
97 if (dtable.not_open ((s)->fd)) \
99 (s)->saw_error = TRUE; \
104 /* The main select code.
108 cygwin_select (int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
112 fd_set *dummy_readfds = allocfd_set (maxfds);
113 fd_set *dummy_writefds = allocfd_set (maxfds);
114 fd_set *dummy_exceptfds = allocfd_set (maxfds);
115 sigframe thisframe (mainthread, 0);
125 select_printf ("%d, %p, %p, %p, %p", maxfds, readfds, writefds, exceptfds, to);
128 readfds = dummy_readfds;
130 writefds = dummy_writefds;
132 exceptfds = dummy_exceptfds;
134 for (int i = 0; i < maxfds; i++)
135 if (!sel.test_and_set (i, readfds, writefds, exceptfds))
137 select_printf ("aborting due to test_and_set error");
138 return -1; /* Invalid fd, maybe? */
141 /* Convert to milliseconds or INFINITE if to == NULL */
142 DWORD ms = to ? (to->tv_sec * 1000) + (to->tv_usec / 1000) : INFINITE;
143 if (ms == 0 && to->tv_usec)
144 ms = 1; /* At least 1 ms granularity */
147 select_printf ("to->tv_sec %d, to->tv_usec %d, ms %d", to->tv_sec, to->tv_usec, ms);
149 select_printf ("to NULL, ms %x", ms);
151 select_printf ("sel.always_ready %d", sel.always_ready);
153 /* Degenerate case. No fds to wait for. Just wait. */
154 if (sel.start.next == NULL)
156 if (WaitForSingleObject (signal_arrived, ms) == WAIT_OBJECT_0)
158 select_printf ("signal received");
159 set_sig_errno (EINTR);
165 /* Allocate some fd_set structures using the number of fds as a guide. */
166 fd_set *r = allocfd_set (maxfds);
167 fd_set *w = allocfd_set (maxfds);
168 fd_set *e = allocfd_set (maxfds);
170 /* Don't bother waiting if one of the selected fds is "always ready". */
171 if ((!sel.always_ready || ms != 0) && sel.wait (r, w, e, ms))
172 return -1; /* some kind of error */
174 copyfd_set (readfds, r, maxfds);
175 copyfd_set (writefds, w, maxfds);
176 copyfd_set (exceptfds, e, maxfds);
177 return sel.poll (readfds, writefds, exceptfds);
181 select_stuff::~select_stuff ()
183 select_record *s = &start;
185 select_printf ("calling cleanup routines");
186 while ((s = s->next))
188 s->cleanup (s, this);
190 select_record *snext = start.next;
192 select_printf ("deleting select records");
200 /* Add a record to the select chain */
202 select_stuff::test_and_set (int i, fd_set *readfds, fd_set *writefds,
205 select_record *s = NULL;
206 if (UNIX_FD_ISSET (i, readfds) && (s = dtable.select_read (i, s)) == NULL)
207 return 0; /* error */
208 if (UNIX_FD_ISSET (i, writefds) && (s = dtable.select_write (i, s)) == NULL)
209 return 0; /* error */
210 if (UNIX_FD_ISSET (i, exceptfds) && (s = dtable.select_except (i, s)) == NULL)
211 return 0; /* error */
213 return 1; /* nothing to do */
215 if (s->read_ready || s->write_ready || s->except_ready)
218 if (s->windows_handle || s->windows_handle || s->windows_handle)
221 s->next = start.next;
226 /* Poll every fd in the select chain. Set appropriate fd in mask. */
228 select_stuff::poll (fd_set *readfds, fd_set *writefds, fd_set *exceptfds)
231 select_record *s = &start;
232 while ((s = s->next))
233 n += s->poll (s, readfds, writefds, exceptfds);
234 select_printf ("returning %d", n);
238 /* The heart of select. Waits for an fd to do something interesting. */
240 select_stuff::wait (fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
244 HANDLE w4[MAXIMUM_WAIT_OBJECTS];
245 select_record *s = &start;
248 w4[m++] = signal_arrived; /* Always wait for the arrival of a signal. */
249 /* Loop through the select chain, starting up anything appropriate and
250 counting the number of active fds. */
251 while ((s = s->next))
253 if (m > MAXIMUM_WAIT_OBJECTS)
258 if (!s->startup (s, this))
265 for (int i = 1; i < m; i++)
273 DWORD start_time = GetTickCount (); /* Record the current time for later use. */
275 debug_printf ("m %d, ms %u", m, ms);
279 wait_ret = WaitForMultipleObjects (m, w4, FALSE, ms);
281 wait_ret = MsgWaitForMultipleObjects (m, w4, FALSE, ms, QS_ALLINPUT);
286 select_printf ("signal received");
287 set_sig_errno (EINTR);
290 select_printf ("WaitForMultipleObjects failed");
294 select_printf ("timed out");
298 select_printf ("woke up. wait_ret %d. verifying", wait_ret);
301 while ((s = s->next))
303 return -1; /* Somebody detected an error */
304 else if ((((wait_ret >= m && s->windows_handle) || s->h == w4[wait_ret])) &&
305 s->verify (s, readfds, writefds, exceptfds))
308 select_printf ("gotone %d", gotone);
314 select_printf ("looping");
317 select_printf ("recalculating ms");
319 DWORD now = GetTickCount ();
320 if (now > (start_time + ms))
322 select_printf ("timed out after verification");
325 ms -= (now - start_time);
327 select_printf ("ms now %u", ms);
331 select_printf ("returning 0");
336 set_bits (select_record *me, fd_set *readfds, fd_set *writefds,
340 select_printf ("me %p, testing fd %d (%s)", me, me->fd, me->fh->get_name ());
341 if (me->read_selected && me->read_ready)
343 UNIX_FD_SET (me->fd, readfds);
346 if (me->write_selected && me->write_ready)
348 UNIX_FD_SET (me->fd, writefds);
351 if (me->except_ready && me->except_ready)
353 UNIX_FD_SET (me->fd, exceptfds);
356 select_printf ("ready %d", ready);
361 verify_true (select_record *, fd_set *, fd_set *, fd_set *)
367 verify_ok (select_record *me, fd_set *readfds, fd_set *writefds,
370 return set_bits (me, readfds, writefds, exceptfds);
374 no_startup (select_record *, select_stuff *)
380 no_verify (select_record *, fd_set *, fd_set *, fd_set *)
386 peek_pipe (select_record *s, int ignra)
390 fhandler_base *fh = s->fh;
393 set_handle_or_return_if_not_open (h, s);
395 /* Don't perform complicated tests if we don't need to. */
396 if (!s->read_selected && !s->except_selected)
399 if (s->read_selected)
403 select_printf ("already ready");
407 if (fh->bg_check (SIGTTIN) <= 0)
409 gotone = s->read_ready = 1;
413 if (!ignra && fh->get_device () != FH_PTYM && fh->get_device () != FH_TTYM &&
414 fh->get_readahead_valid ())
416 select_printf ("readahead");
417 gotone = s->read_ready = 1;
422 if (fh->get_device() != FH_PIPEW &&
423 !PeekNamedPipe (h, NULL, 0, NULL, (DWORD *) &n, NULL))
425 select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ());
431 select_printf ("%s, n %d", fh->get_name (), n);
432 if (s->except_selected)
433 gotone += s->except_ready = TRUE;
434 if (s->read_selected)
435 gotone += s->read_ready = TRUE;
437 if (n > 0 && s->read_selected)
439 select_printf ("%s, ready for read", fh->get_name ());
440 gotone += s->read_ready = TRUE;
442 if (!gotone && s->fh->hit_eof ())
444 select_printf ("%s, saw EOF", fh->get_name ());
445 if (s->except_selected)
446 gotone = s->except_ready = TRUE;
447 if (s->read_selected)
448 gotone += s->read_ready = TRUE;
449 select_printf ("saw eof on '%s'", fh->get_name ());
453 return gotone || s->write_ready;
457 poll_pipe (select_record *me, fd_set *readfds, fd_set *writefds,
460 return peek_pipe (me, 0) ?
461 set_bits (me, readfds, writefds, exceptfds) :
467 static int start_thread_pipe (select_record *me, select_stuff *stuff);
472 BOOL stop_thread_pipe;
473 select_record *start;
477 thread_pipe (void *arg)
479 pipeinf *pi = (pipeinf *)arg;
484 select_record *s = pi->start;
485 while ((s = s->next))
486 if (s->startup == start_thread_pipe)
488 if (peek_pipe (s, 0))
490 if (pi->stop_thread_pipe)
492 select_printf ("stopping");
497 if (pi->stop_thread_pipe)
499 select_printf ("stopping from outer loop");
511 start_thread_pipe (select_record *me, select_stuff *stuff)
513 if (stuff->device_specific[FHDEVN(FH_PIPE)])
515 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_PIPE)])->thread;
518 pipeinf *pi = new pipeinf;
519 pi->start = &stuff->start;
520 pi->stop_thread_pipe = FALSE;
521 pi->thread = me->h = makethread (thread_pipe, (LPVOID)pi, 0, "select_pipe");
524 stuff->device_specific[FHDEVN(FH_PIPE)] = (void *)pi;
529 pipe_cleanup (select_record *, select_stuff *stuff)
531 pipeinf *pi = (pipeinf *)stuff->device_specific[FHDEVN(FH_PIPE)];
532 if (pi && pi->thread)
534 pi->stop_thread_pipe = TRUE;
535 WaitForSingleObject (pi->thread, INFINITE);
536 CloseHandle (pi->thread);
538 stuff->device_specific[FHDEVN(FH_PIPE)] = NULL;
543 fhandler_pipe::select_read (select_record *s)
546 s = new select_record;
547 s->startup = start_thread_pipe;
549 s->verify = verify_ok;
550 s->read_selected = TRUE;
551 s->cleanup = pipe_cleanup;
556 fhandler_pipe::select_write (select_record *s)
560 s = new select_record;
561 s->startup = no_startup;
563 s->verify = no_verify;
565 s->write_selected = TRUE;
566 s->write_ready = TRUE;
571 fhandler_pipe::select_except (select_record *s)
574 s = new select_record;
575 s->startup = start_thread_pipe;
577 s->verify = verify_ok;
578 s->cleanup = pipe_cleanup;
579 s->except_selected = TRUE;
584 peek_console (select_record *me, int ignra)
586 extern const char * get_nonascii_key (INPUT_RECORD& input_rec, char *);
587 fhandler_console *fh = (fhandler_console *)me->fh;
589 if (!me->read_selected)
590 return me->write_ready;
592 if (!ignra && fh->get_readahead_valid ())
594 select_printf ("readahead");
595 return me->read_ready = 1;
600 select_printf ("already ready");
608 set_handle_or_return_if_not_open (h, me);
611 if (fh->bg_check (SIGTTIN) <= 0)
612 return me->read_ready = 1;
613 else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read)
617 if (irec.EventType == WINDOW_BUFFER_SIZE_EVENT)
618 kill_pgrp (fh->tc->getpgid (), SIGWINCH);
619 else if (irec.EventType == KEY_EVENT && irec.Event.KeyEvent.bKeyDown == TRUE &&
620 (irec.Event.KeyEvent.uChar.AsciiChar || get_nonascii_key (irec, tmpbuf)))
621 return me->read_ready = 1;
623 /* Read and discard the event */
624 ReadConsoleInput (h, &irec, 1, &events_read);
627 return me->write_ready;
631 poll_console (select_record *me, fd_set *readfds, fd_set *writefds,
634 return peek_console (me, 0) ?
635 set_bits (me, readfds, writefds, exceptfds) :
642 fhandler_console::select_read (select_record *s)
646 s = new select_record;
647 s->startup = no_startup;
648 s->poll = poll_console;
649 s->verify = poll_console;
653 s->h = get_handle ();
654 s->read_selected = TRUE;
659 fhandler_console::select_write (select_record *s)
663 s = new select_record;
664 s->startup = no_startup;
665 s->poll = poll_console;
666 s->verify = no_verify;
670 s->write_selected = TRUE;
671 s->write_ready = TRUE;
676 fhandler_console::select_except (select_record *s)
680 s = new select_record;
681 s->startup = no_startup;
682 s->poll = poll_console;
683 s->verify = no_verify;
687 s->except_selected = TRUE;
692 fhandler_tty_common::ready_for_read (int fd, DWORD howlong, int ignra)
695 if (myself->pgid && get_ttyp ()->getpgid () != myself->pgid &&
696 myself->ctty == ttynum) // background process?
697 return 1; // Yes. Let read return an error
699 return ((fhandler_pipe*)this)->fhandler_pipe::ready_for_read (fd, howlong, ignra);
703 fhandler_tty_common::select_read (select_record *s)
705 return ((fhandler_pipe*)this)->fhandler_pipe::select_read (s);
709 fhandler_tty_common::select_write (select_record *s)
711 return ((fhandler_pipe *)this)->fhandler_pipe::select_write (s);
715 fhandler_tty_common::select_except (select_record *s)
717 return ((fhandler_pipe *)this)->fhandler_pipe::select_except (s);
721 fhandler_dev_null::select_read (select_record *s)
725 s = new select_record;
726 s->startup = no_startup;
728 s->verify = no_verify;
730 s->h = get_handle ();
731 s->read_selected = TRUE;
736 fhandler_dev_null::select_write (select_record *s)
740 s = new select_record;
741 s->startup = no_startup;
743 s->verify = no_verify;
745 s->h = get_handle ();
746 s->write_selected = TRUE;
751 fhandler_dev_null::select_except (select_record *s)
755 s = new select_record;
756 s->startup = no_startup;
758 s->verify = no_verify;
760 s->h = get_handle ();
761 s->except_selected = TRUE;
762 s->except_ready = TRUE;
766 static int start_thread_serial (select_record *me, select_stuff *stuff);
771 BOOL stop_thread_serial;
772 select_record *start;
776 peek_serial (select_record *s, int)
781 fhandler_serial *fh = (fhandler_serial *)s->fh;
783 if (fh->get_readahead_valid () || fh->overlapped_armed < 0)
784 return s->read_ready = 1;
786 select_printf ("fh->overlapped_armed %d", fh->overlapped_armed);
789 set_handle_or_return_if_not_open (h, s);
792 if (s->read_selected && s->read_ready || (s->write_selected && s->write_ready))
794 select_printf ("already ready");
799 (void) SetCommMask (h, EV_RXCHAR);
801 if (!fh->overlapped_armed)
806 ResetEvent (fh->io_status.hEvent);
808 if (!ClearCommError (h, &ev, &st))
810 debug_printf ("ClearCommError");
814 return s->read_ready = 1;
815 else if (WaitCommEvent (h, &ev, &fh->io_status))
816 return s->read_ready = 1;
817 else if (GetLastError () == ERROR_IO_PENDING)
818 fh->overlapped_armed = 1;
821 debug_printf ("WaitCommEvent");
829 w4[0] = fh->io_status.hEvent;
830 w4[1] = signal_arrived;
833 switch (WaitForMultipleObjects (2, w4, FALSE, to))
836 if (!ClearCommError (h, &ev, &st))
838 debug_printf ("ClearCommError");
841 else if (!st.cbInQue)
845 return s->read_ready = 1;
846 select_printf ("got something");
848 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
850 case WAIT_OBJECT_0 + 1:
851 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
852 select_printf ("interrupt");
853 set_sig_errno (EINTR);
857 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
860 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
861 debug_printf ("WaitForMultipleObjects");
869 if (GetLastError () == ERROR_OPERATION_ABORTED)
871 select_printf ("operation aborted");
877 select_printf ("error %E");
882 thread_serial (void *arg)
884 serialinf *si = (serialinf *)arg;
889 select_record *s = si->start;
890 while ((s = s->next))
891 if (s->startup == start_thread_serial)
893 if (peek_serial (s, 0))
896 if (si->stop_thread_serial)
898 select_printf ("stopping");
905 select_printf ("exiting");
910 start_thread_serial (select_record *me, select_stuff *stuff)
912 if (stuff->device_specific[FHDEVN(FH_SERIAL)])
914 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_SERIAL)])->thread;
917 serialinf *si = new serialinf;
918 si->start = &stuff->start;
919 si->stop_thread_serial = FALSE;
920 si->thread = me->h = makethread (thread_serial, (LPVOID)si, 0, "select_serial");
923 stuff->device_specific[FHDEVN(FH_SERIAL)] = (void *)si;
928 serial_cleanup (select_record *, select_stuff *stuff)
930 serialinf *si = (serialinf *)stuff->device_specific[FHDEVN(FH_SERIAL)];
931 if (si && si->thread)
933 si->stop_thread_serial = TRUE;
934 WaitForSingleObject (si->thread, INFINITE);
935 CloseHandle (si->thread);
937 stuff->device_specific[FHDEVN(FH_SERIAL)] = NULL;
942 poll_serial (select_record *me, fd_set *readfds, fd_set *writefds,
946 return peek_serial (me, 0) ?
947 set_bits (me, readfds, writefds, exceptfds) :
954 fhandler_serial::select_read (select_record *s)
958 s = new select_record;
959 s->startup = start_thread_serial;
960 s->poll = poll_serial;
961 s->verify = verify_ok;
962 s->cleanup = serial_cleanup;
964 s->read_selected = TRUE;
969 fhandler_serial::select_write (select_record *s)
973 s = new select_record;
974 s->startup = no_startup;
976 s->verify = verify_ok;
978 s->h = get_handle ();
979 s->write_selected = TRUE;
980 s->write_ready = TRUE;
985 fhandler_serial::select_except (select_record *s)
989 s = new select_record;
990 s->startup = no_startup;
992 s->verify = verify_ok;
995 s->except_selected = FALSE; // Can't do this
1000 fhandler_base::ready_for_read (int, DWORD, int)
1006 fhandler_base::select_read (select_record *s)
1010 s = new select_record;
1011 s->startup = no_startup;
1013 s->verify = verify_ok;
1015 s->h = get_handle ();
1016 s->read_selected = TRUE;
1017 s->read_ready = TRUE;
1022 fhandler_base::select_write (select_record *s)
1026 s = new select_record;
1027 s->startup = no_startup;
1029 s->verify = verify_ok;
1031 s->h = get_handle ();
1032 s->write_selected = TRUE;
1033 s->write_ready = TRUE;
1038 fhandler_base::select_except (select_record *s)
1042 s = new select_record;
1043 s->startup = no_startup;
1045 s->verify = verify_ok;
1048 s->write_selected = TRUE;
1055 winsock_fd_set readfds, writefds, exceptfds;
1057 struct sockaddr_in sin;
1058 select_record *start;
1062 peek_socket (select_record *me, int)
1064 winsock_fd_set ws_readfds, ws_writefds, ws_exceptfds;
1065 struct timeval tv = {0, 0};
1066 WINSOCK_FD_ZERO (&ws_readfds);
1067 WINSOCK_FD_ZERO (&ws_writefds);
1068 WINSOCK_FD_ZERO (&ws_exceptfds);
1072 set_handle_or_return_if_not_open (h, me);
1073 select_printf ("considering handle %p", h);
1075 if (me->read_selected)
1077 select_printf ("adding read fd_set %s, fd %d", me->fh->get_name (),
1079 WINSOCK_FD_SET (h, &ws_readfds);
1081 if (me->write_selected)
1083 select_printf ("adding write fd_set %s, fd %d", me->fh->get_name (),
1085 WINSOCK_FD_SET (h, &ws_writefds);
1087 if (me->except_selected)
1089 select_printf ("adding except fd_set %s, fd %d", me->fh->get_name (),
1091 WINSOCK_FD_SET (h, &ws_exceptfds);
1093 int r = WINSOCK_SELECT (0, &ws_readfds, &ws_writefds, &ws_exceptfds, &tv);
1094 select_printf ("WINSOCK_SELECT returned %d", r);
1097 select_printf ("error %d", WSAGetLastError ());
1101 if (WINSOCK_FD_ISSET (h, &ws_readfds) || (me->read_selected && me->read_ready))
1102 gotone = me->read_ready = TRUE;
1103 if (WINSOCK_FD_ISSET (h, &ws_writefds) || (me->write_selected && me->write_ready))
1104 gotone = me->write_ready = TRUE;
1105 if (WINSOCK_FD_ISSET (h, &ws_exceptfds) || (me->except_selected && me->except_ready))
1106 gotone = me->except_ready = TRUE;
1111 poll_socket (select_record *me, fd_set *readfds, fd_set *writefds,
1114 return peek_socket (me, 0) ?
1115 set_bits (me, readfds, writefds, exceptfds) :
1121 static int start_thread_socket (select_record *, select_stuff *);
1124 thread_socket (void *arg)
1126 socketinf *si = (socketinf *)arg;
1128 select_printf ("stuff_start %p", &si->start);
1129 int r = WINSOCK_SELECT (0, &si->readfds, &si->writefds, &si->exceptfds, NULL);
1130 select_printf ("Win32 select returned %d", r);
1132 select_printf ("error %d", WSAGetLastError ());
1133 select_record *s = si->start;
1134 while ((s = s->next))
1135 if (s->startup == start_thread_socket)
1137 HANDLE h = s->fh->get_handle ();
1138 select_printf ("s %p, testing fd %d (%s)", s, s->fd, s->fh->get_name ());
1139 if (WINSOCK_FD_ISSET (h, &si->readfds))
1141 select_printf ("read_ready");
1142 s->read_ready = TRUE;
1144 if (WINSOCK_FD_ISSET (h, &si->writefds))
1146 select_printf ("write_ready");
1147 s->write_ready = TRUE;
1149 if (WINSOCK_FD_ISSET (h, &si->exceptfds))
1151 select_printf ("except_ready");
1152 s->except_ready = TRUE;
1156 if (WINSOCK_FD_ISSET (si->exitsock, &si->readfds))
1157 select_printf ("saw exitsock read");
1162 extern "C" unsigned long htonl (unsigned long);
1165 start_thread_socket (select_record *me, select_stuff *stuff)
1169 if ((si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)]))
1176 WINSOCK_FD_ZERO (&si->readfds);
1177 WINSOCK_FD_ZERO (&si->writefds);
1178 WINSOCK_FD_ZERO (&si->exceptfds);
1179 select_record *s = &stuff->start;
1180 while ((s = s->next))
1181 if (s->startup == start_thread_socket)
1183 HANDLE h = s->fh->get_handle ();
1184 select_printf ("Handle %p", h);
1185 if (s->read_selected)
1187 WINSOCK_FD_SET (h, &si->readfds);
1188 select_printf ("Added to readfds");
1190 if (s->write_selected)
1192 WINSOCK_FD_SET (h, &si->writefds);
1193 select_printf ("Added to writefds");
1195 if (s->except_selected)
1197 WINSOCK_FD_SET (h, &si->exceptfds);
1198 select_printf ("Added to exceptfds");
1202 if ((si->exitsock = socket (PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
1204 set_winsock_errno ();
1205 select_printf ("cannot create socket, %E");
1208 /* Allow rapid reuse of the port. */
1210 (void) setsockopt (si->exitsock, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
1212 int sin_len = sizeof(si->sin);
1213 memset (&si->sin, 0, sizeof (si->sin));
1214 si->sin.sin_family = AF_INET;
1215 si->sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1216 if (bind (si->exitsock, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1218 select_printf ("cannot bind socket, %E");
1222 if (getsockname (si->exitsock, (struct sockaddr *) &si->sin, &sin_len) < 0)
1224 select_printf ("getsockname error");
1228 if (listen (si->exitsock, 1))
1230 select_printf ("listen failed, %E");
1234 select_printf ("exitsock %p", si->exitsock);
1235 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->readfds);
1236 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->exceptfds);
1237 stuff->device_specific[FHDEVN(FH_SOCKET)] = (void *) si;
1238 si->start = &stuff->start;
1239 select_printf ("stuff_start %p", &stuff->start);
1240 si->thread = me->h = makethread (thread_socket, (LPVOID)si, 0,
1245 set_winsock_errno ();
1246 closesocket (si->exitsock);
1251 socket_cleanup (select_record *, select_stuff *stuff)
1253 socketinf *si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)];
1254 select_printf ("si %p si->thread %p", si, si ? si->thread : NULL);
1255 if (si && si->thread)
1257 select_printf ("connection to si->exitsock %p", si->exitsock);
1258 SOCKET s = socket (AF_INET, SOCK_STREAM, 0);
1259 /* Connecting to si->exitsock will cause any executing select to wake
1260 up. When this happens then the exitsock condition will cause the
1261 thread to terminate. */
1262 if (connect (s, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1264 set_winsock_errno ();
1265 select_printf ("connect failed");
1266 /* FIXME: now what? */
1271 /* Wait for thread to go away */
1272 WaitForSingleObject (si->thread, INFINITE);
1273 shutdown (si->exitsock, 2);
1274 closesocket (si->exitsock);
1275 CloseHandle (si->thread);
1276 stuff->device_specific[FHDEVN(FH_SOCKET)] = NULL;
1279 select_printf ("returning");
1283 fhandler_socket::select_read (select_record *s)
1287 s = new select_record;
1288 s->startup = start_thread_socket;
1289 s->poll = poll_socket;
1290 s->verify = verify_true;
1291 s->cleanup = socket_cleanup;
1293 s->read_selected = TRUE;
1298 fhandler_socket::select_write (select_record *s)
1302 s = new select_record;
1303 s->startup = start_thread_socket;
1304 s->poll = poll_socket;
1305 s->verify = verify_true;
1306 s->cleanup = socket_cleanup;
1308 s->write_selected = TRUE;
1313 fhandler_socket::select_except (select_record *s)
1317 s = new select_record;
1318 s->startup = start_thread_socket;
1319 s->poll = poll_socket;
1320 s->verify = verify_true;
1321 s->cleanup = socket_cleanup;
1323 s->except_selected = TRUE;
1328 peek_windows (select_record *me, int)
1332 set_handle_or_return_if_not_open (h, me);
1334 if (me->read_selected && me->read_ready)
1337 if (PeekMessage (&m, (HWND) h, 0, 0, PM_NOREMOVE))
1339 me->read_ready = TRUE;
1340 select_printf ("window %d(%p) ready", me->fd, me->fh->get_handle ());
1344 select_printf ("window %d(%p) not ready", me->fd, me->fh->get_handle ());
1345 return me->write_ready;
1349 poll_windows (select_record *me, fd_set *readfds, fd_set *writefds,
1353 return peek_windows (me, 0) ?
1354 set_bits (me, readfds, writefds, exceptfds) :
1361 fhandler_windows::select_read (select_record *s)
1365 s = new select_record;
1366 s->startup = no_startup;
1367 s->poll = poll_windows;
1368 s->verify = poll_windows;
1370 s->h = get_handle ();
1371 s->read_selected = TRUE;
1372 s->h = get_handle ();
1373 s->windows_handle = TRUE;
1378 fhandler_windows::select_write (select_record *s)
1382 s = new select_record;
1383 s->startup = no_startup;
1385 s->verify = verify_ok;
1387 s->h = get_handle ();
1388 s->write_selected = TRUE;
1389 s->write_ready = TRUE;
1390 s->windows_handle = TRUE;
1395 fhandler_windows::select_except (select_record *s)
1399 s = new select_record;
1400 s->startup = no_startup;
1402 s->verify = verify_ok;
1404 s->h = get_handle ();
1405 s->except_selected = TRUE;
1406 s->except_ready = TRUE;
1407 s->windows_handle = TRUE;