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>
36 * All these defines below should be in sys/types.h
37 * but because of the includes above, they may not have
38 * been included. We create special UNIX_xxxx versions here.
42 #define NBBY 8 /* number of bits in a byte */
46 * Select uses bit masks of file descriptors in longs.
47 * These macros manipulate such bit fields (the filesystem macros use chars).
48 * FD_SETSIZE may be defined by the user, but the default here
49 * should be >= NOFILE (param.h).
53 #define UNIX_NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */
55 #define unix_howmany(x,y) (((x)+((y)-1))/(y))
58 #define unix_fd_set fd_set
60 #define NULL_fd_set ((fd_set *)NULL)
61 #define sizeof_fd_set(n) \
62 ((unsigned) (NULL_fd_set->fds_bits + unix_howmany((n), UNIX_NFDBITS)))
63 #define UNIX_FD_SET(n, p) \
64 ((p)->fds_bits[(n)/UNIX_NFDBITS] |= (1L << ((n) % UNIX_NFDBITS)))
65 #define UNIX_FD_CLR(n, p) \
66 ((p)->fds_bits[(n)/UNIX_NFDBITS] &= ~(1L << ((n) % UNIX_NFDBITS)))
67 #define UNIX_FD_ISSET(n, p) \
68 ((p)->fds_bits[(n)/UNIX_NFDBITS] & (1L << ((n) % UNIX_NFDBITS)))
69 #define UNIX_FD_ZERO(p, n) \
70 bzero ((caddr_t)(p), sizeof_fd_set ((n)))
72 #define allocfd_set(n) ((fd_set *) alloca (sizeof_fd_set (n)))
73 #define copyfd_set(to, from, n) memcpy (to, from, sizeof_fd_set (n));
75 /* Make a fhandler_foo::ready_for_ready method.
76 Assumption: The "ready_for_read" methods are called with one level of
78 #define MAKEready(what) \
80 fhandler_##what::ready_for_read (int fd, DWORD howlong, int ignra) \
82 select_record me (this); \
84 (void) select_read (&me); \
85 while (!peek_##what (&me, ignra) && howlong == INFINITE) \
86 if (fd >= 0 && dtable.not_open (fd)) \
88 else if (WaitForSingleObject (signal_arrived, 10) == WAIT_OBJECT_0) \
90 return me.read_ready; \
93 #define set_handle_or_return_if_not_open(h, s) \
94 h = (s)->fh->get_handle (); \
95 if (dtable.not_open ((s)->fd)) \
97 (s)->saw_error = TRUE; \
102 /* The main select code.
106 cygwin_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
110 fd_set *dummy_readfds = allocfd_set (n);
111 fd_set *dummy_writefds = allocfd_set (n);
112 fd_set *dummy_exceptfds = allocfd_set (n);
113 sigframe thisframe (mainthread, 0);
123 select_printf ("%d, %p, %p, %p, %p", n, readfds, writefds, exceptfds, to);
127 UNIX_FD_ZERO (dummy_readfds, n);
128 readfds = dummy_readfds;
132 UNIX_FD_ZERO (dummy_writefds, n);
133 writefds = dummy_writefds;
137 UNIX_FD_ZERO (dummy_exceptfds, n);
138 exceptfds = dummy_exceptfds;
141 for (int i = 0; i < n; i++)
142 if (!sel.test_and_set (i, readfds, writefds, exceptfds))
144 select_printf ("aborting due to test_and_set error");
145 return -1; /* Invalid fd, maybe? */
148 /* Convert to milliseconds or INFINITE if to == NULL */
149 DWORD ms = to ? (to->tv_sec * 1000) + (to->tv_usec / 1000) : INFINITE;
150 if (ms == 0 && to->tv_usec)
151 ms = 1; /* At least 1 ms granularity */
154 select_printf ("to->tv_sec %d, to->tv_usec %d, ms %d", to->tv_sec, to->tv_usec, ms);
156 select_printf ("to NULL, ms %x", ms);
158 select_printf ("sel.always_ready %d", sel.always_ready);
160 /* Degenerate case. No fds to wait for. Just wait. */
161 if (sel.start.next == NULL)
163 if (WaitForSingleObject (signal_arrived, ms) == WAIT_OBJECT_0)
165 select_printf ("signal received");
166 set_sig_errno (EINTR);
172 /* If one of the selected fds is "always ready" just poll everything and return
173 the result. There is no need to wait. */
174 if (sel.always_ready || ms == 0)
176 UNIX_FD_ZERO (readfds, n);
177 UNIX_FD_ZERO (writefds, n);
178 UNIX_FD_ZERO (exceptfds, n);
179 return sel.poll (readfds, writefds, exceptfds);
182 /* Wait for an fd to come alive */
183 return sel.wait (readfds, writefds, exceptfds, ms);
187 select_stuff::~select_stuff ()
189 select_record *s = &start;
191 select_printf ("calling cleanup routines");
192 while ((s = s->next))
194 s->cleanup (s, this);
196 select_record *snext = start.next;
198 select_printf ("deleting select records");
206 /* Add a record to the select chain */
208 select_stuff::test_and_set (int i, fd_set *readfds, fd_set *writefds,
211 select_record *s = NULL;
212 if (UNIX_FD_ISSET (i, readfds) && (s = dtable.select_read (i, s)) == NULL)
213 return 0; /* error */
214 if (UNIX_FD_ISSET (i, writefds) && (s = dtable.select_write (i, s)) == NULL)
215 return 0; /* error */
216 if (UNIX_FD_ISSET (i, exceptfds) && (s = dtable.select_except (i, s)) == NULL)
217 return 0; /* error */
219 return 1; /* nothing to do */
221 if (s->read_ready || s->write_ready || s->except_ready)
224 if (s->windows_handle || s->windows_handle || s->windows_handle)
227 s->next = start.next;
232 /* Poll every fd in the select chain. Set appropriate fd in mask. */
234 select_stuff::poll (fd_set *readfds, fd_set *writefds, fd_set *exceptfds)
237 select_record *s = &start;
238 while ((s = s->next))
239 n += s->poll (s, readfds, writefds, exceptfds);
240 select_printf ("returning %d", n);
244 /* The heart of select. Waits for an fd to do something interesting. */
246 select_stuff::wait (fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
250 HANDLE w4[MAXIMUM_WAIT_OBJECTS];
251 select_record *s = &start;
254 w4[m++] = signal_arrived; /* Always wait for the arrival of a signal. */
255 /* Loop through the select chain, starting up anything appropriate and
256 counting the number of active fds. */
257 while ((s = s->next))
259 if (!s->startup (s, this))
266 for (int i = 1; i < m; i++)
275 DWORD start_time = GetTickCount (); /* Record the current time for later use. */
277 /* Allocate some fd_set structures using the number of fds as a guide. */
278 fd_set *r = allocfd_set (n);
279 fd_set *w = allocfd_set (n);
280 fd_set *e = allocfd_set (n);
284 debug_printf ("n %d, ms %u", n, ms);
288 wait_ret = WaitForMultipleObjects (m, w4, FALSE, ms);
290 wait_ret = MsgWaitForMultipleObjects (m, w4, FALSE, ms, QS_ALLINPUT);
295 select_printf ("signal received");
296 set_sig_errno (EINTR);
299 select_printf ("WaitForMultipleObjects failed");
303 select_printf ("timed out");
307 select_printf ("woke up. wait_ret %d. verifying", wait_ret);
310 while ((s = s->next))
312 return -1; /* Somebody detected an error */
313 else if ((((wait_ret >= m && s->windows_handle) || s->h == w4[wait_ret])) &&
314 s->verify (s, r, w, e))
317 select_printf ("gotone %d", gotone);
323 select_printf ("looping");
326 select_printf ("recalculating ms");
328 DWORD now = GetTickCount ();
329 if (now > (start_time + ms))
331 select_printf ("timed out after verification");
334 ms -= (now - start_time);
336 select_printf ("ms now %u", ms);
340 copyfd_set (readfds, r, n);
341 copyfd_set (writefds, w, n);
342 copyfd_set (exceptfds, e, n);
344 return poll (readfds, writefds, exceptfds);
348 set_bits (select_record *me, fd_set *readfds, fd_set *writefds,
352 select_printf ("me %p, testing fd %d (%s)", me, me->fd, me->fh->get_name ());
353 if (me->read_selected && me->read_ready)
355 UNIX_FD_SET (me->fd, readfds);
358 if (me->write_selected && me->write_ready)
360 UNIX_FD_SET (me->fd, writefds);
363 if (me->except_ready && me->except_ready)
365 UNIX_FD_SET (me->fd, exceptfds);
368 select_printf ("ready %d", ready);
373 verify_true (select_record *, fd_set *, fd_set *, fd_set *)
379 verify_ok (select_record *me, fd_set *readfds, fd_set *writefds,
382 return set_bits (me, readfds, writefds, exceptfds);
386 no_startup (select_record *, select_stuff *)
392 no_verify (select_record *, fd_set *, fd_set *, fd_set *)
398 peek_pipe (select_record *s, int ignra)
402 fhandler_base *fh = s->fh;
405 set_handle_or_return_if_not_open (h, s);
407 /* Don't perform complicated tests if we don't need to. */
408 if (!s->read_selected && !s->except_selected)
411 if (s->read_selected)
415 select_printf ("already ready");
419 if (fh->bg_check (SIGTTIN) <= 0)
421 gotone = s->read_ready = 1;
425 if (!ignra && fh->get_device () != FH_PTYM && fh->get_device () != FH_TTYM &&
426 fh->get_readahead_valid ())
428 select_printf ("readahead");
429 gotone = s->read_ready = 1;
434 if (fh->get_device() != FH_PIPEW &&
435 !PeekNamedPipe (h, NULL, 0, NULL, (DWORD *) &n, NULL))
437 select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ());
443 select_printf ("%s, n %d", fh->get_name (), n);
444 if (s->except_selected)
445 gotone += s->except_ready = TRUE;
446 if (s->read_selected)
447 gotone += s->read_ready = TRUE;
449 if (n > 0 && s->read_selected)
451 select_printf ("%s, ready for read", fh->get_name ());
452 gotone += s->read_ready = TRUE;
454 if (!gotone && s->fh->hit_eof ())
456 select_printf ("%s, saw EOF", fh->get_name ());
457 if (s->except_selected)
458 gotone = s->except_ready = TRUE;
459 if (s->read_selected)
460 gotone += s->read_ready = TRUE;
461 select_printf ("saw eof on '%s'", fh->get_name ());
465 return gotone || s->write_ready;
469 poll_pipe (select_record *me, fd_set *readfds, fd_set *writefds,
472 return peek_pipe (me, 0) ?
473 set_bits (me, readfds, writefds, exceptfds) :
479 static int start_thread_pipe (select_record *me, select_stuff *stuff);
484 BOOL stop_thread_pipe;
485 select_record *start;
489 thread_pipe (void *arg)
491 pipeinf *pi = (pipeinf *)arg;
496 select_record *s = pi->start;
497 while ((s = s->next))
498 if (s->startup == start_thread_pipe)
500 if (peek_pipe (s, 0))
502 if (pi->stop_thread_pipe)
504 select_printf ("stopping");
517 start_thread_pipe (select_record *me, select_stuff *stuff)
519 if (stuff->device_specific[FHDEVN(FH_PIPE)])
521 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_PIPE)])->thread;
524 pipeinf *pi = new pipeinf;
525 pi->start = &stuff->start;
526 pi->stop_thread_pipe = FALSE;
527 pi->thread = me->h = makethread (thread_pipe, (LPVOID)pi, 0, "select_pipe");
530 stuff->device_specific[FHDEVN(FH_PIPE)] = (void *)pi;
535 pipe_cleanup (select_record *, select_stuff *stuff)
537 pipeinf *pi = (pipeinf *)stuff->device_specific[FHDEVN(FH_PIPE)];
538 if (pi && pi->thread)
540 pi->stop_thread_pipe = TRUE;
541 WaitForSingleObject (pi->thread, INFINITE);
542 CloseHandle (pi->thread);
544 stuff->device_specific[FHDEVN(FH_PIPE)] = NULL;
549 fhandler_pipe::select_read (select_record *s)
552 s = new select_record;
553 s->startup = start_thread_pipe;
555 s->verify = verify_ok;
556 s->read_selected = TRUE;
557 s->cleanup = pipe_cleanup;
562 fhandler_pipe::select_write (select_record *s)
566 s = new select_record;
567 s->startup = no_startup;
569 s->verify = no_verify;
571 s->write_selected = TRUE;
572 s->write_ready = TRUE;
577 fhandler_pipe::select_except (select_record *s)
580 s = new select_record;
581 s->startup = start_thread_pipe;
583 s->verify = verify_ok;
584 s->cleanup = pipe_cleanup;
585 s->except_selected = TRUE;
590 peek_console (select_record *me, int ignra)
592 extern const char * get_nonascii_key (INPUT_RECORD& input_rec);
593 fhandler_console *fh = (fhandler_console *)me->fh;
595 if (!me->read_selected)
596 return me->write_ready;
598 if (!ignra && fh->get_readahead_valid ())
600 select_printf ("readahead");
601 return me->read_ready = 1;
606 select_printf ("already ready");
613 set_handle_or_return_if_not_open (h, me);
616 if (fh->bg_check (SIGTTIN) <= 0)
617 return me->read_ready = 1;
618 else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read)
622 if (irec.EventType == WINDOW_BUFFER_SIZE_EVENT)
623 kill_pgrp (fh->tc->getpgid (), SIGWINCH);
624 else if (irec.EventType == KEY_EVENT && irec.Event.KeyEvent.bKeyDown == TRUE &&
625 (irec.Event.KeyEvent.uChar.AsciiChar || get_nonascii_key (irec)))
626 return me->read_ready = 1;
628 /* Read and discard the event */
629 ReadConsoleInput (h, &irec, 1, &events_read);
632 return me->write_ready;
636 poll_console (select_record *me, fd_set *readfds, fd_set *writefds,
639 return peek_console (me, 0) ?
640 set_bits (me, readfds, writefds, exceptfds) :
647 fhandler_console::select_read (select_record *s)
651 s = new select_record;
652 s->startup = no_startup;
653 s->poll = poll_console;
654 s->verify = poll_console;
657 s->h = get_handle ();
658 s->read_selected = TRUE;
663 fhandler_console::select_write (select_record *s)
667 s = new select_record;
668 s->startup = no_startup;
669 s->poll = poll_console;
670 s->verify = no_verify;
673 s->write_selected = TRUE;
674 s->write_ready = TRUE;
679 fhandler_console::select_except (select_record *s)
683 s = new select_record;
684 s->startup = no_startup;
685 s->poll = poll_console;
686 s->verify = no_verify;
689 s->except_selected = TRUE;
694 fhandler_tty_common::ready_for_read (int fd, DWORD howlong, int ignra)
697 if (myself->pgid && get_ttyp ()->getpgid () != myself->pgid &&
698 myself->ctty == ttynum) // background process?
699 return 1; // Yes. Let read return an error
701 return ((fhandler_pipe*)this)->fhandler_pipe::ready_for_read (fd, howlong, ignra);
705 fhandler_tty_common::select_read (select_record *s)
707 return ((fhandler_pipe*)this)->fhandler_pipe::select_read (s);
711 fhandler_tty_common::select_write (select_record *s)
713 return ((fhandler_pipe *)this)->fhandler_pipe::select_write (s);
717 fhandler_tty_common::select_except (select_record *s)
719 return ((fhandler_pipe *)this)->fhandler_pipe::select_except (s);
723 fhandler_dev_null::select_read (select_record *s)
727 s = new select_record;
728 s->startup = no_startup;
730 s->verify = no_verify;
732 s->h = get_handle ();
733 s->read_selected = TRUE;
738 fhandler_dev_null::select_write (select_record *s)
742 s = new select_record;
743 s->startup = no_startup;
745 s->verify = no_verify;
747 s->h = get_handle ();
748 s->write_selected = TRUE;
753 fhandler_dev_null::select_except (select_record *s)
757 s = new select_record;
758 s->startup = no_startup;
760 s->verify = no_verify;
762 s->h = get_handle ();
763 s->except_selected = TRUE;
764 s->except_ready = TRUE;
768 static int start_thread_serial (select_record *me, select_stuff *stuff);
773 BOOL stop_thread_serial;
774 select_record *start;
778 peek_serial (select_record *s, int)
783 fhandler_serial *fh = (fhandler_serial *)s->fh;
785 if (fh->get_readahead_valid () || fh->overlapped_armed < 0)
786 return s->read_ready = 1;
788 select_printf ("fh->overlapped_armed %d", fh->overlapped_armed);
791 set_handle_or_return_if_not_open (h, s);
794 if (s->read_selected && s->read_ready || (s->write_selected && s->write_ready))
796 select_printf ("already ready");
801 (void) SetCommMask (h, EV_RXCHAR);
803 if (!fh->overlapped_armed)
808 ResetEvent (fh->io_status.hEvent);
810 if (!ClearCommError (h, &ev, &st))
812 debug_printf ("ClearCommError");
816 return s->read_ready = 1;
817 else if (WaitCommEvent (h, &ev, &fh->io_status))
818 return s->read_ready = 1;
819 else if (GetLastError () == ERROR_IO_PENDING)
820 fh->overlapped_armed = 1;
823 debug_printf ("WaitCommEvent");
831 w4[0] = fh->io_status.hEvent;
832 w4[1] = signal_arrived;
835 switch (WaitForMultipleObjects (2, w4, FALSE, to))
838 if (!ClearCommError (h, &ev, &st))
840 debug_printf ("ClearCommError");
843 else if (!st.cbInQue)
847 return s->read_ready = 1;
848 select_printf ("got something");
850 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
852 case WAIT_OBJECT_0 + 1:
853 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
854 select_printf ("interrupt");
855 set_sig_errno (EINTR);
859 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
862 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
863 debug_printf ("WaitForMultipleObjects");
871 if (GetLastError () == ERROR_OPERATION_ABORTED)
873 select_printf ("operation aborted");
879 select_printf ("error %E");
884 thread_serial (void *arg)
886 serialinf *si = (serialinf *)arg;
891 select_record *s = si->start;
892 while ((s = s->next))
893 if (s->startup == start_thread_serial)
895 if (peek_serial (s, 0))
898 if (si->stop_thread_serial)
900 select_printf ("stopping");
907 select_printf ("exiting");
912 start_thread_serial (select_record *me, select_stuff *stuff)
914 if (stuff->device_specific[FHDEVN(FH_SERIAL)])
916 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_SERIAL)])->thread;
919 serialinf *si = new serialinf;
920 si->start = &stuff->start;
921 si->stop_thread_serial = FALSE;
922 si->thread = me->h = makethread (thread_serial, (LPVOID)si, 0, "select_serial");
925 stuff->device_specific[FHDEVN(FH_SERIAL)] = (void *)si;
930 serial_cleanup (select_record *, select_stuff *stuff)
932 serialinf *si = (serialinf *)stuff->device_specific[FHDEVN(FH_SERIAL)];
933 if (si && si->thread)
935 si->stop_thread_serial = TRUE;
936 WaitForSingleObject (si->thread, INFINITE);
937 CloseHandle (si->thread);
939 stuff->device_specific[FHDEVN(FH_SERIAL)] = NULL;
944 poll_serial (select_record *me, fd_set *readfds, fd_set *writefds,
948 return peek_serial (me, 0) ?
949 set_bits (me, readfds, writefds, exceptfds) :
956 fhandler_serial::select_read (select_record *s)
960 s = new select_record;
961 s->startup = start_thread_serial;
962 s->poll = poll_serial;
963 s->verify = verify_ok;
964 s->cleanup = serial_cleanup;
966 s->read_selected = TRUE;
971 fhandler_serial::select_write (select_record *s)
975 s = new select_record;
976 s->startup = no_startup;
978 s->verify = verify_ok;
980 s->h = get_handle ();
981 s->write_selected = TRUE;
982 s->write_ready = TRUE;
987 fhandler_serial::select_except (select_record *s)
991 s = new select_record;
992 s->startup = no_startup;
994 s->verify = verify_ok;
997 s->except_selected = FALSE; // Can't do this
1002 fhandler_base::ready_for_read (int, DWORD, int)
1008 fhandler_base::select_read (select_record *s)
1012 s = new select_record;
1013 s->startup = no_startup;
1015 s->verify = verify_ok;
1017 s->h = get_handle ();
1018 s->read_selected = TRUE;
1019 s->read_ready = TRUE;
1024 fhandler_base::select_write (select_record *s)
1028 s = new select_record;
1029 s->startup = no_startup;
1031 s->verify = verify_ok;
1033 s->h = get_handle ();
1034 s->write_selected = TRUE;
1035 s->write_ready = TRUE;
1040 fhandler_base::select_except (select_record *s)
1044 s = new select_record;
1045 s->startup = no_startup;
1047 s->verify = verify_ok;
1050 s->write_selected = TRUE;
1057 winsock_fd_set readfds, writefds, exceptfds;
1059 struct sockaddr_in sin;
1060 select_record *start;
1064 peek_socket (select_record *me, int)
1066 winsock_fd_set ws_readfds, ws_writefds, ws_exceptfds;
1067 struct timeval tv = {0, 0};
1068 WINSOCK_FD_ZERO (&ws_readfds);
1069 WINSOCK_FD_ZERO (&ws_writefds);
1070 WINSOCK_FD_ZERO (&ws_exceptfds);
1074 set_handle_or_return_if_not_open (h, me);
1075 select_printf ("considering handle %p", h);
1077 if (me->read_selected)
1079 select_printf ("adding read fd_set %s, fd %d", me->fh->get_name (),
1081 WINSOCK_FD_SET (h, &ws_readfds);
1083 if (me->write_selected)
1085 select_printf ("adding write fd_set %s, fd %d", me->fh->get_name (),
1087 WINSOCK_FD_SET (h, &ws_writefds);
1089 if (me->except_selected)
1091 select_printf ("adding except fd_set %s, fd %d", me->fh->get_name (),
1093 WINSOCK_FD_SET (h, &ws_exceptfds);
1095 int r = WINSOCK_SELECT (0, &ws_readfds, &ws_writefds, &ws_exceptfds, &tv);
1096 select_printf ("WINSOCK_SELECT returned %d", r);
1099 select_printf ("error %d", WSAGetLastError ());
1103 if (WINSOCK_FD_ISSET (h, &ws_readfds) || (me->read_selected && me->read_ready))
1104 gotone = me->read_ready = TRUE;
1105 if (WINSOCK_FD_ISSET (h, &ws_writefds) || (me->write_selected && me->write_ready))
1106 gotone = me->write_ready = TRUE;
1107 if (WINSOCK_FD_ISSET (h, &ws_exceptfds) || (me->except_selected && me->except_ready))
1108 gotone = me->except_ready = TRUE;
1113 poll_socket (select_record *me, fd_set *readfds, fd_set *writefds,
1116 return peek_socket (me, 0) ?
1117 set_bits (me, readfds, writefds, exceptfds) :
1123 static int start_thread_socket (select_record *, select_stuff *);
1126 thread_socket (void *arg)
1128 socketinf *si = (socketinf *)arg;
1130 select_printf ("stuff_start %p", &si->start);
1131 int r = WINSOCK_SELECT (0, &si->readfds, &si->writefds, &si->exceptfds, NULL);
1132 select_printf ("Win32 select returned %d", r);
1134 select_printf ("error %d", WSAGetLastError ());
1135 select_record *s = si->start;
1136 while ((s = s->next))
1137 if (s->startup == start_thread_socket)
1139 HANDLE h = s->fh->get_handle ();
1140 select_printf ("s %p, testing fd %d (%s)", s, s->fd, s->fh->get_name ());
1141 if (WINSOCK_FD_ISSET (h, &si->readfds))
1143 select_printf ("read_ready");
1144 s->read_ready = TRUE;
1146 if (WINSOCK_FD_ISSET (h, &si->writefds))
1148 select_printf ("write_ready");
1149 s->write_ready = TRUE;
1151 if (WINSOCK_FD_ISSET (h, &si->exceptfds))
1153 select_printf ("except_ready");
1154 s->except_ready = TRUE;
1158 if (WINSOCK_FD_ISSET (si->exitsock, &si->readfds))
1159 select_printf ("saw exitsock read");
1164 extern "C" unsigned long htonl (unsigned long);
1167 start_thread_socket (select_record *me, select_stuff *stuff)
1171 if ((si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)]))
1178 WINSOCK_FD_ZERO (&si->readfds);
1179 WINSOCK_FD_ZERO (&si->writefds);
1180 WINSOCK_FD_ZERO (&si->exceptfds);
1181 select_record *s = &stuff->start;
1182 while ((s = s->next))
1183 if (s->startup == start_thread_socket)
1185 HANDLE h = s->fh->get_handle ();
1186 select_printf ("Handle %p", h);
1187 if (s->read_selected)
1189 WINSOCK_FD_SET (h, &si->readfds);
1190 select_printf ("Added to readfds");
1192 if (s->write_selected)
1194 WINSOCK_FD_SET (h, &si->writefds);
1195 select_printf ("Added to writefds");
1197 if (s->except_selected)
1199 WINSOCK_FD_SET (h, &si->exceptfds);
1200 select_printf ("Added to exceptfds");
1204 if ((si->exitsock = socket (PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
1206 set_winsock_errno ();
1207 select_printf ("cannot create socket, %E");
1210 /* Allow rapid reuse of the port. */
1212 (void) setsockopt (si->exitsock, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
1214 int sin_len = sizeof(si->sin);
1215 memset (&si->sin, 0, sizeof (si->sin));
1216 si->sin.sin_family = AF_INET;
1217 si->sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1218 if (bind (si->exitsock, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1220 select_printf ("cannot bind socket, %E");
1224 if (getsockname (si->exitsock, (struct sockaddr *) &si->sin, &sin_len) < 0)
1226 select_printf ("getsockname error");
1230 if (listen (si->exitsock, 1))
1232 select_printf ("listen failed, %E");
1236 select_printf ("exitsock %p", si->exitsock);
1237 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->readfds);
1238 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->exceptfds);
1239 stuff->device_specific[FHDEVN(FH_SOCKET)] = (void *) si;
1240 si->start = &stuff->start;
1241 select_printf ("stuff_start %p", &stuff->start);
1242 si->thread = me->h = makethread (thread_socket, (LPVOID)si, 0,
1247 set_winsock_errno ();
1248 closesocket (si->exitsock);
1253 socket_cleanup (select_record *, select_stuff *stuff)
1255 socketinf *si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)];
1256 select_printf ("si %p si->thread %p", si, si ? si->thread : NULL);
1257 if (si && si->thread)
1259 select_printf ("connection to si->exitsock %p", si->exitsock);
1260 SOCKET s = socket (AF_INET, SOCK_STREAM, 0);
1261 /* Connecting to si->exitsock will cause any executing select to wake
1262 up. When this happens then the exitsock condition will cause the
1263 thread to terminate. */
1264 if (connect (s, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1266 set_winsock_errno ();
1267 select_printf ("connect failed");
1268 /* FIXME: now what? */
1272 /* Wait for thread to go away */
1273 WaitForSingleObject (si->thread, INFINITE);
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;