3 Copyright 1996, 1997, 1998, 1999, 2000 Cygnus Solutions.
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__
24 #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 *) alloca (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 n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
112 fd_set *dummy_readfds = allocfd_set (n);
113 fd_set *dummy_writefds = allocfd_set (n);
114 fd_set *dummy_exceptfds = allocfd_set (n);
115 sigframe thisframe (mainthread, 0);
125 select_printf ("%d, %p, %p, %p, %p", n, readfds, writefds, exceptfds, to);
129 UNIX_FD_ZERO (dummy_readfds, n);
130 readfds = dummy_readfds;
134 UNIX_FD_ZERO (dummy_writefds, n);
135 writefds = dummy_writefds;
139 UNIX_FD_ZERO (dummy_exceptfds, n);
140 exceptfds = dummy_exceptfds;
143 for (int i = 0; i < n; i++)
144 if (!sel.test_and_set (i, readfds, writefds, exceptfds))
146 select_printf ("aborting due to test_and_set error");
147 return -1; /* Invalid fd, maybe? */
150 /* Convert to milliseconds or INFINITE if to == NULL */
151 DWORD ms = to ? (to->tv_sec * 1000) + (to->tv_usec / 1000) : INFINITE;
152 if (ms == 0 && to->tv_usec)
153 ms = 1; /* At least 1 ms granularity */
156 select_printf ("to->tv_sec %d, to->tv_usec %d, ms %d", to->tv_sec, to->tv_usec, ms);
158 select_printf ("to NULL, ms %x", ms);
160 select_printf ("sel.always_ready %d", sel.always_ready);
162 /* Degenerate case. No fds to wait for. Just wait. */
163 if (sel.start.next == NULL)
165 if (WaitForSingleObject (signal_arrived, ms) == WAIT_OBJECT_0)
167 select_printf ("signal received");
168 set_sig_errno (EINTR);
174 /* If one of the selected fds is "always ready" just poll everything and return
175 the result. There is no need to wait. */
176 if (sel.always_ready || ms == 0)
178 UNIX_FD_ZERO (readfds, n);
179 UNIX_FD_ZERO (writefds, n);
180 UNIX_FD_ZERO (exceptfds, n);
181 return sel.poll (readfds, writefds, exceptfds);
184 /* Wait for an fd to come alive */
185 return sel.wait (readfds, writefds, exceptfds, ms);
189 select_stuff::~select_stuff ()
191 select_record *s = &start;
193 select_printf ("calling cleanup routines");
194 while ((s = s->next))
196 s->cleanup (s, this);
198 select_record *snext = start.next;
200 select_printf ("deleting select records");
208 /* Add a record to the select chain */
210 select_stuff::test_and_set (int i, fd_set *readfds, fd_set *writefds,
213 select_record *s = NULL;
214 if (UNIX_FD_ISSET (i, readfds) && (s = dtable.select_read (i, s)) == NULL)
215 return 0; /* error */
216 if (UNIX_FD_ISSET (i, writefds) && (s = dtable.select_write (i, s)) == NULL)
217 return 0; /* error */
218 if (UNIX_FD_ISSET (i, exceptfds) && (s = dtable.select_except (i, s)) == NULL)
219 return 0; /* error */
221 return 1; /* nothing to do */
223 if (s->read_ready || s->write_ready || s->except_ready)
226 if (s->windows_handle || s->windows_handle || s->windows_handle)
229 s->next = start.next;
234 /* Poll every fd in the select chain. Set appropriate fd in mask. */
236 select_stuff::poll (fd_set *readfds, fd_set *writefds, fd_set *exceptfds)
239 select_record *s = &start;
240 while ((s = s->next))
241 n += s->poll (s, readfds, writefds, exceptfds);
242 select_printf ("returning %d", n);
246 /* The heart of select. Waits for an fd to do something interesting. */
248 select_stuff::wait (fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
252 HANDLE w4[MAXIMUM_WAIT_OBJECTS];
253 select_record *s = &start;
256 w4[m++] = signal_arrived; /* Always wait for the arrival of a signal. */
257 /* Loop through the select chain, starting up anything appropriate and
258 counting the number of active fds. */
259 while ((s = s->next))
261 if (!s->startup (s, this))
268 for (int i = 1; i < m; i++)
277 DWORD start_time = GetTickCount (); /* Record the current time for later use. */
279 /* Allocate some fd_set structures using the number of fds as a guide. */
280 fd_set *r = allocfd_set (n);
281 fd_set *w = allocfd_set (n);
282 fd_set *e = allocfd_set (n);
286 debug_printf ("n %d, ms %u", n, ms);
290 wait_ret = WaitForMultipleObjects (m, w4, FALSE, ms);
292 wait_ret = MsgWaitForMultipleObjects (m, w4, FALSE, ms, QS_ALLINPUT);
297 select_printf ("signal received");
298 set_sig_errno (EINTR);
301 select_printf ("WaitForMultipleObjects failed");
305 select_printf ("timed out");
309 select_printf ("woke up. wait_ret %d. verifying", wait_ret);
312 while ((s = s->next))
314 return -1; /* Somebody detected an error */
315 else if ((((wait_ret >= m && s->windows_handle) || s->h == w4[wait_ret])) &&
316 s->verify (s, r, w, e))
319 select_printf ("gotone %d", gotone);
325 select_printf ("looping");
328 select_printf ("recalculating ms");
330 DWORD now = GetTickCount ();
331 if (now > (start_time + ms))
333 select_printf ("timed out after verification");
336 ms -= (now - start_time);
338 select_printf ("ms now %u", ms);
342 copyfd_set (readfds, r, n);
343 copyfd_set (writefds, w, n);
344 copyfd_set (exceptfds, e, n);
346 return poll (readfds, writefds, exceptfds);
350 set_bits (select_record *me, fd_set *readfds, fd_set *writefds,
354 select_printf ("me %p, testing fd %d (%s)", me, me->fd, me->fh->get_name ());
355 if (me->read_selected && me->read_ready)
357 UNIX_FD_SET (me->fd, readfds);
360 if (me->write_selected && me->write_ready)
362 UNIX_FD_SET (me->fd, writefds);
365 if (me->except_ready && me->except_ready)
367 UNIX_FD_SET (me->fd, exceptfds);
370 select_printf ("ready %d", ready);
375 verify_true (select_record *, fd_set *, fd_set *, fd_set *)
381 verify_ok (select_record *me, fd_set *readfds, fd_set *writefds,
384 return set_bits (me, readfds, writefds, exceptfds);
388 no_startup (select_record *, select_stuff *)
394 no_verify (select_record *, fd_set *, fd_set *, fd_set *)
400 peek_pipe (select_record *s, int ignra)
404 fhandler_base *fh = s->fh;
407 set_handle_or_return_if_not_open (h, s);
409 /* Don't perform complicated tests if we don't need to. */
410 if (!s->read_selected && !s->except_selected)
413 if (s->read_selected)
417 select_printf ("already ready");
421 if (fh->bg_check (SIGTTIN) <= 0)
423 gotone = s->read_ready = 1;
427 if (!ignra && fh->get_device () != FH_PTYM && fh->get_device () != FH_TTYM &&
428 fh->get_readahead_valid ())
430 select_printf ("readahead");
431 gotone = s->read_ready = 1;
436 if (fh->get_device() != FH_PIPEW &&
437 !PeekNamedPipe (h, NULL, 0, NULL, (DWORD *) &n, NULL))
439 select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ());
445 select_printf ("%s, n %d", fh->get_name (), n);
446 if (s->except_selected)
447 gotone += s->except_ready = TRUE;
448 if (s->read_selected)
449 gotone += s->read_ready = TRUE;
451 if (n > 0 && s->read_selected)
453 select_printf ("%s, ready for read", fh->get_name ());
454 gotone += s->read_ready = TRUE;
456 if (!gotone && s->fh->hit_eof ())
458 select_printf ("%s, saw EOF", fh->get_name ());
459 if (s->except_selected)
460 gotone = s->except_ready = TRUE;
461 if (s->read_selected)
462 gotone += s->read_ready = TRUE;
463 select_printf ("saw eof on '%s'", fh->get_name ());
467 return gotone || s->write_ready;
471 poll_pipe (select_record *me, fd_set *readfds, fd_set *writefds,
474 return peek_pipe (me, 0) ?
475 set_bits (me, readfds, writefds, exceptfds) :
481 static int start_thread_pipe (select_record *me, select_stuff *stuff);
486 BOOL stop_thread_pipe;
487 select_record *start;
491 thread_pipe (void *arg)
493 pipeinf *pi = (pipeinf *)arg;
498 select_record *s = pi->start;
499 while ((s = s->next))
500 if (s->startup == start_thread_pipe)
502 if (peek_pipe (s, 0))
504 if (pi->stop_thread_pipe)
506 select_printf ("stopping");
511 if (pi->stop_thread_pipe)
513 select_printf ("stopping from outer loop");
525 start_thread_pipe (select_record *me, select_stuff *stuff)
527 if (stuff->device_specific[FHDEVN(FH_PIPE)])
529 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_PIPE)])->thread;
532 pipeinf *pi = new pipeinf;
533 pi->start = &stuff->start;
534 pi->stop_thread_pipe = FALSE;
535 pi->thread = me->h = makethread (thread_pipe, (LPVOID)pi, 0, "select_pipe");
538 stuff->device_specific[FHDEVN(FH_PIPE)] = (void *)pi;
543 pipe_cleanup (select_record *, select_stuff *stuff)
545 pipeinf *pi = (pipeinf *)stuff->device_specific[FHDEVN(FH_PIPE)];
546 if (pi && pi->thread)
548 pi->stop_thread_pipe = TRUE;
549 WaitForSingleObject (pi->thread, INFINITE);
550 CloseHandle (pi->thread);
552 stuff->device_specific[FHDEVN(FH_PIPE)] = NULL;
557 fhandler_pipe::select_read (select_record *s)
560 s = new select_record;
561 s->startup = start_thread_pipe;
563 s->verify = verify_ok;
564 s->read_selected = TRUE;
565 s->cleanup = pipe_cleanup;
570 fhandler_pipe::select_write (select_record *s)
574 s = new select_record;
575 s->startup = no_startup;
577 s->verify = no_verify;
579 s->write_selected = TRUE;
580 s->write_ready = TRUE;
585 fhandler_pipe::select_except (select_record *s)
588 s = new select_record;
589 s->startup = start_thread_pipe;
591 s->verify = verify_ok;
592 s->cleanup = pipe_cleanup;
593 s->except_selected = TRUE;
598 peek_console (select_record *me, int ignra)
600 extern const char * get_nonascii_key (INPUT_RECORD& input_rec, char *);
601 fhandler_console *fh = (fhandler_console *)me->fh;
603 if (!me->read_selected)
604 return me->write_ready;
606 if (!ignra && fh->get_readahead_valid ())
608 select_printf ("readahead");
609 return me->read_ready = 1;
614 select_printf ("already ready");
622 set_handle_or_return_if_not_open (h, me);
625 if (fh->bg_check (SIGTTIN) <= 0)
626 return me->read_ready = 1;
627 else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read)
631 if (irec.EventType == WINDOW_BUFFER_SIZE_EVENT)
632 kill_pgrp (fh->tc->getpgid (), SIGWINCH);
633 else if (irec.EventType == KEY_EVENT && irec.Event.KeyEvent.bKeyDown == TRUE &&
634 (irec.Event.KeyEvent.uChar.AsciiChar || get_nonascii_key (irec, tmpbuf)))
635 return me->read_ready = 1;
637 /* Read and discard the event */
638 ReadConsoleInput (h, &irec, 1, &events_read);
641 return me->write_ready;
645 poll_console (select_record *me, fd_set *readfds, fd_set *writefds,
648 return peek_console (me, 0) ?
649 set_bits (me, readfds, writefds, exceptfds) :
656 fhandler_console::select_read (select_record *s)
660 s = new select_record;
661 s->startup = no_startup;
662 s->poll = poll_console;
663 s->verify = poll_console;
666 s->h = get_handle ();
667 s->read_selected = TRUE;
672 fhandler_console::select_write (select_record *s)
676 s = new select_record;
677 s->startup = no_startup;
678 s->poll = poll_console;
679 s->verify = no_verify;
682 s->write_selected = TRUE;
683 s->write_ready = TRUE;
688 fhandler_console::select_except (select_record *s)
692 s = new select_record;
693 s->startup = no_startup;
694 s->poll = poll_console;
695 s->verify = no_verify;
698 s->except_selected = TRUE;
703 fhandler_tty_common::ready_for_read (int fd, DWORD howlong, int ignra)
706 if (myself->pgid && get_ttyp ()->getpgid () != myself->pgid &&
707 myself->ctty == ttynum) // background process?
708 return 1; // Yes. Let read return an error
710 return ((fhandler_pipe*)this)->fhandler_pipe::ready_for_read (fd, howlong, ignra);
714 fhandler_tty_common::select_read (select_record *s)
716 return ((fhandler_pipe*)this)->fhandler_pipe::select_read (s);
720 fhandler_tty_common::select_write (select_record *s)
722 return ((fhandler_pipe *)this)->fhandler_pipe::select_write (s);
726 fhandler_tty_common::select_except (select_record *s)
728 return ((fhandler_pipe *)this)->fhandler_pipe::select_except (s);
732 fhandler_dev_null::select_read (select_record *s)
736 s = new select_record;
737 s->startup = no_startup;
739 s->verify = no_verify;
741 s->h = get_handle ();
742 s->read_selected = TRUE;
747 fhandler_dev_null::select_write (select_record *s)
751 s = new select_record;
752 s->startup = no_startup;
754 s->verify = no_verify;
756 s->h = get_handle ();
757 s->write_selected = TRUE;
762 fhandler_dev_null::select_except (select_record *s)
766 s = new select_record;
767 s->startup = no_startup;
769 s->verify = no_verify;
771 s->h = get_handle ();
772 s->except_selected = TRUE;
773 s->except_ready = TRUE;
777 static int start_thread_serial (select_record *me, select_stuff *stuff);
782 BOOL stop_thread_serial;
783 select_record *start;
787 peek_serial (select_record *s, int)
792 fhandler_serial *fh = (fhandler_serial *)s->fh;
794 if (fh->get_readahead_valid () || fh->overlapped_armed < 0)
795 return s->read_ready = 1;
797 select_printf ("fh->overlapped_armed %d", fh->overlapped_armed);
800 set_handle_or_return_if_not_open (h, s);
803 if (s->read_selected && s->read_ready || (s->write_selected && s->write_ready))
805 select_printf ("already ready");
810 (void) SetCommMask (h, EV_RXCHAR);
812 if (!fh->overlapped_armed)
817 ResetEvent (fh->io_status.hEvent);
819 if (!ClearCommError (h, &ev, &st))
821 debug_printf ("ClearCommError");
825 return s->read_ready = 1;
826 else if (WaitCommEvent (h, &ev, &fh->io_status))
827 return s->read_ready = 1;
828 else if (GetLastError () == ERROR_IO_PENDING)
829 fh->overlapped_armed = 1;
832 debug_printf ("WaitCommEvent");
840 w4[0] = fh->io_status.hEvent;
841 w4[1] = signal_arrived;
844 switch (WaitForMultipleObjects (2, w4, FALSE, to))
847 if (!ClearCommError (h, &ev, &st))
849 debug_printf ("ClearCommError");
852 else if (!st.cbInQue)
856 return s->read_ready = 1;
857 select_printf ("got something");
859 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
861 case WAIT_OBJECT_0 + 1:
862 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
863 select_printf ("interrupt");
864 set_sig_errno (EINTR);
868 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
871 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
872 debug_printf ("WaitForMultipleObjects");
880 if (GetLastError () == ERROR_OPERATION_ABORTED)
882 select_printf ("operation aborted");
888 select_printf ("error %E");
893 thread_serial (void *arg)
895 serialinf *si = (serialinf *)arg;
900 select_record *s = si->start;
901 while ((s = s->next))
902 if (s->startup == start_thread_serial)
904 if (peek_serial (s, 0))
907 if (si->stop_thread_serial)
909 select_printf ("stopping");
916 select_printf ("exiting");
921 start_thread_serial (select_record *me, select_stuff *stuff)
923 if (stuff->device_specific[FHDEVN(FH_SERIAL)])
925 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_SERIAL)])->thread;
928 serialinf *si = new serialinf;
929 si->start = &stuff->start;
930 si->stop_thread_serial = FALSE;
931 si->thread = me->h = makethread (thread_serial, (LPVOID)si, 0, "select_serial");
934 stuff->device_specific[FHDEVN(FH_SERIAL)] = (void *)si;
939 serial_cleanup (select_record *, select_stuff *stuff)
941 serialinf *si = (serialinf *)stuff->device_specific[FHDEVN(FH_SERIAL)];
942 if (si && si->thread)
944 si->stop_thread_serial = TRUE;
945 WaitForSingleObject (si->thread, INFINITE);
946 CloseHandle (si->thread);
948 stuff->device_specific[FHDEVN(FH_SERIAL)] = NULL;
953 poll_serial (select_record *me, fd_set *readfds, fd_set *writefds,
957 return peek_serial (me, 0) ?
958 set_bits (me, readfds, writefds, exceptfds) :
965 fhandler_serial::select_read (select_record *s)
969 s = new select_record;
970 s->startup = start_thread_serial;
971 s->poll = poll_serial;
972 s->verify = verify_ok;
973 s->cleanup = serial_cleanup;
975 s->read_selected = TRUE;
980 fhandler_serial::select_write (select_record *s)
984 s = new select_record;
985 s->startup = no_startup;
987 s->verify = verify_ok;
989 s->h = get_handle ();
990 s->write_selected = TRUE;
991 s->write_ready = TRUE;
996 fhandler_serial::select_except (select_record *s)
1000 s = new select_record;
1001 s->startup = no_startup;
1003 s->verify = verify_ok;
1006 s->except_selected = FALSE; // Can't do this
1011 fhandler_base::ready_for_read (int, DWORD, int)
1017 fhandler_base::select_read (select_record *s)
1021 s = new select_record;
1022 s->startup = no_startup;
1024 s->verify = verify_ok;
1026 s->h = get_handle ();
1027 s->read_selected = TRUE;
1028 s->read_ready = TRUE;
1033 fhandler_base::select_write (select_record *s)
1037 s = new select_record;
1038 s->startup = no_startup;
1040 s->verify = verify_ok;
1042 s->h = get_handle ();
1043 s->write_selected = TRUE;
1044 s->write_ready = TRUE;
1049 fhandler_base::select_except (select_record *s)
1053 s = new select_record;
1054 s->startup = no_startup;
1056 s->verify = verify_ok;
1059 s->write_selected = TRUE;
1066 winsock_fd_set readfds, writefds, exceptfds;
1068 struct sockaddr_in sin;
1069 select_record *start;
1073 peek_socket (select_record *me, int)
1075 winsock_fd_set ws_readfds, ws_writefds, ws_exceptfds;
1076 struct timeval tv = {0, 0};
1077 WINSOCK_FD_ZERO (&ws_readfds);
1078 WINSOCK_FD_ZERO (&ws_writefds);
1079 WINSOCK_FD_ZERO (&ws_exceptfds);
1083 set_handle_or_return_if_not_open (h, me);
1084 select_printf ("considering handle %p", h);
1086 if (me->read_selected)
1088 select_printf ("adding read fd_set %s, fd %d", me->fh->get_name (),
1090 WINSOCK_FD_SET (h, &ws_readfds);
1092 if (me->write_selected)
1094 select_printf ("adding write fd_set %s, fd %d", me->fh->get_name (),
1096 WINSOCK_FD_SET (h, &ws_writefds);
1098 if (me->except_selected)
1100 select_printf ("adding except fd_set %s, fd %d", me->fh->get_name (),
1102 WINSOCK_FD_SET (h, &ws_exceptfds);
1104 int r = WINSOCK_SELECT (0, &ws_readfds, &ws_writefds, &ws_exceptfds, &tv);
1105 select_printf ("WINSOCK_SELECT returned %d", r);
1108 select_printf ("error %d", WSAGetLastError ());
1112 if (WINSOCK_FD_ISSET (h, &ws_readfds) || (me->read_selected && me->read_ready))
1113 gotone = me->read_ready = TRUE;
1114 if (WINSOCK_FD_ISSET (h, &ws_writefds) || (me->write_selected && me->write_ready))
1115 gotone = me->write_ready = TRUE;
1116 if (WINSOCK_FD_ISSET (h, &ws_exceptfds) || (me->except_selected && me->except_ready))
1117 gotone = me->except_ready = TRUE;
1122 poll_socket (select_record *me, fd_set *readfds, fd_set *writefds,
1125 return peek_socket (me, 0) ?
1126 set_bits (me, readfds, writefds, exceptfds) :
1132 static int start_thread_socket (select_record *, select_stuff *);
1135 thread_socket (void *arg)
1137 socketinf *si = (socketinf *)arg;
1139 select_printf ("stuff_start %p", &si->start);
1140 int r = WINSOCK_SELECT (0, &si->readfds, &si->writefds, &si->exceptfds, NULL);
1141 select_printf ("Win32 select returned %d", r);
1143 select_printf ("error %d", WSAGetLastError ());
1144 select_record *s = si->start;
1145 while ((s = s->next))
1146 if (s->startup == start_thread_socket)
1148 HANDLE h = s->fh->get_handle ();
1149 select_printf ("s %p, testing fd %d (%s)", s, s->fd, s->fh->get_name ());
1150 if (WINSOCK_FD_ISSET (h, &si->readfds))
1152 select_printf ("read_ready");
1153 s->read_ready = TRUE;
1155 if (WINSOCK_FD_ISSET (h, &si->writefds))
1157 select_printf ("write_ready");
1158 s->write_ready = TRUE;
1160 if (WINSOCK_FD_ISSET (h, &si->exceptfds))
1162 select_printf ("except_ready");
1163 s->except_ready = TRUE;
1167 if (WINSOCK_FD_ISSET (si->exitsock, &si->readfds))
1168 select_printf ("saw exitsock read");
1173 extern "C" unsigned long htonl (unsigned long);
1176 start_thread_socket (select_record *me, select_stuff *stuff)
1180 if ((si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)]))
1187 WINSOCK_FD_ZERO (&si->readfds);
1188 WINSOCK_FD_ZERO (&si->writefds);
1189 WINSOCK_FD_ZERO (&si->exceptfds);
1190 select_record *s = &stuff->start;
1191 while ((s = s->next))
1192 if (s->startup == start_thread_socket)
1194 HANDLE h = s->fh->get_handle ();
1195 select_printf ("Handle %p", h);
1196 if (s->read_selected)
1198 WINSOCK_FD_SET (h, &si->readfds);
1199 select_printf ("Added to readfds");
1201 if (s->write_selected)
1203 WINSOCK_FD_SET (h, &si->writefds);
1204 select_printf ("Added to writefds");
1206 if (s->except_selected)
1208 WINSOCK_FD_SET (h, &si->exceptfds);
1209 select_printf ("Added to exceptfds");
1213 if ((si->exitsock = socket (PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
1215 set_winsock_errno ();
1216 select_printf ("cannot create socket, %E");
1219 /* Allow rapid reuse of the port. */
1221 (void) setsockopt (si->exitsock, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
1223 int sin_len = sizeof(si->sin);
1224 memset (&si->sin, 0, sizeof (si->sin));
1225 si->sin.sin_family = AF_INET;
1226 si->sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1227 if (bind (si->exitsock, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1229 select_printf ("cannot bind socket, %E");
1233 if (getsockname (si->exitsock, (struct sockaddr *) &si->sin, &sin_len) < 0)
1235 select_printf ("getsockname error");
1239 if (listen (si->exitsock, 1))
1241 select_printf ("listen failed, %E");
1245 select_printf ("exitsock %p", si->exitsock);
1246 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->readfds);
1247 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->exceptfds);
1248 stuff->device_specific[FHDEVN(FH_SOCKET)] = (void *) si;
1249 si->start = &stuff->start;
1250 select_printf ("stuff_start %p", &stuff->start);
1251 si->thread = me->h = makethread (thread_socket, (LPVOID)si, 0,
1256 set_winsock_errno ();
1257 closesocket (si->exitsock);
1262 socket_cleanup (select_record *, select_stuff *stuff)
1264 socketinf *si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)];
1265 select_printf ("si %p si->thread %p", si, si ? si->thread : NULL);
1266 if (si && si->thread)
1268 select_printf ("connection to si->exitsock %p", si->exitsock);
1269 SOCKET s = socket (AF_INET, SOCK_STREAM, 0);
1270 /* Connecting to si->exitsock will cause any executing select to wake
1271 up. When this happens then the exitsock condition will cause the
1272 thread to terminate. */
1273 if (connect (s, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1275 set_winsock_errno ();
1276 select_printf ("connect failed");
1277 /* FIXME: now what? */
1282 /* Wait for thread to go away */
1283 WaitForSingleObject (si->thread, INFINITE);
1284 shutdown (si->exitsock, 2);
1285 closesocket (si->exitsock);
1286 CloseHandle (si->thread);
1287 stuff->device_specific[FHDEVN(FH_SOCKET)] = NULL;
1290 select_printf ("returning");
1294 fhandler_socket::select_read (select_record *s)
1298 s = new select_record;
1299 s->startup = start_thread_socket;
1300 s->poll = poll_socket;
1301 s->verify = verify_true;
1302 s->cleanup = socket_cleanup;
1304 s->read_selected = TRUE;
1309 fhandler_socket::select_write (select_record *s)
1313 s = new select_record;
1314 s->startup = start_thread_socket;
1315 s->poll = poll_socket;
1316 s->verify = verify_true;
1317 s->cleanup = socket_cleanup;
1319 s->write_selected = TRUE;
1324 fhandler_socket::select_except (select_record *s)
1328 s = new select_record;
1329 s->startup = start_thread_socket;
1330 s->poll = poll_socket;
1331 s->verify = verify_true;
1332 s->cleanup = socket_cleanup;
1334 s->except_selected = TRUE;
1339 peek_windows (select_record *me, int)
1343 set_handle_or_return_if_not_open (h, me);
1345 if (me->read_selected && me->read_ready)
1348 if (PeekMessage (&m, (HWND) h, 0, 0, PM_NOREMOVE))
1350 me->read_ready = TRUE;
1351 select_printf ("window %d(%p) ready", me->fd, me->fh->get_handle ());
1355 select_printf ("window %d(%p) not ready", me->fd, me->fh->get_handle ());
1356 return me->write_ready;
1360 poll_windows (select_record *me, fd_set *readfds, fd_set *writefds,
1364 return peek_windows (me, 0) ?
1365 set_bits (me, readfds, writefds, exceptfds) :
1372 fhandler_windows::select_read (select_record *s)
1376 s = new select_record;
1377 s->startup = no_startup;
1378 s->poll = poll_windows;
1379 s->verify = poll_windows;
1381 s->h = get_handle ();
1382 s->read_selected = TRUE;
1383 s->h = get_handle ();
1384 s->windows_handle = TRUE;
1389 fhandler_windows::select_write (select_record *s)
1393 s = new select_record;
1394 s->startup = no_startup;
1396 s->verify = verify_ok;
1398 s->h = get_handle ();
1399 s->write_selected = TRUE;
1400 s->write_ready = TRUE;
1401 s->windows_handle = TRUE;
1406 fhandler_windows::select_except (select_record *s)
1410 s = new select_record;
1411 s->startup = no_startup;
1413 s->verify = verify_ok;
1415 s->h = get_handle ();
1416 s->except_selected = TRUE;
1417 s->except_ready = TRUE;
1418 s->windows_handle = TRUE;