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>
41 #include "perthread.h"
44 * All these defines below should be in sys/types.h
45 * but because of the includes above, they may not have
46 * been included. We create special UNIX_xxxx versions here.
50 #define NBBY 8 /* number of bits in a byte */
54 * Select uses bit masks of file descriptors in longs.
55 * These macros manipulate such bit fields (the filesystem macros use chars).
56 * FD_SETSIZE may be defined by the user, but the default here
57 * should be >= NOFILE (param.h).
61 #define UNIX_NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */
63 #define unix_howmany(x,y) (((x)+((y)-1))/(y))
66 #define unix_fd_set fd_set
68 #define NULL_fd_set ((fd_set *)NULL)
69 #define sizeof_fd_set(n) \
70 ((unsigned) (NULL_fd_set->fds_bits + unix_howmany((n), UNIX_NFDBITS)))
71 #define UNIX_FD_SET(n, p) \
72 ((p)->fds_bits[(n)/UNIX_NFDBITS] |= (1L << ((n) % UNIX_NFDBITS)))
73 #define UNIX_FD_CLR(n, p) \
74 ((p)->fds_bits[(n)/UNIX_NFDBITS] &= ~(1L << ((n) % UNIX_NFDBITS)))
75 #define UNIX_FD_ISSET(n, p) \
76 ((p)->fds_bits[(n)/UNIX_NFDBITS] & (1L << ((n) % UNIX_NFDBITS)))
77 #define UNIX_FD_ZERO(p, n) \
78 bzero ((caddr_t)(p), sizeof_fd_set ((n)))
80 #define allocfd_set(n) ((fd_set *) memset (alloca (sizeof_fd_set (n)), 0, sizeof_fd_set (n)))
81 #define copyfd_set(to, from, n) memcpy (to, from, sizeof_fd_set (n));
83 /* Make a fhandler_foo::ready_for_ready method.
84 Assumption: The "ready_for_read" methods are called with one level of
86 #define MAKEready(what) \
88 fhandler_##what::ready_for_read (int fd, DWORD howlong, int ignra) \
90 select_record me (this); \
92 (void) select_read (&me); \
93 while (!peek_##what (&me, ignra) && howlong == INFINITE) \
94 if (fd >= 0 && fdtab.not_open (fd)) \
96 else if (WaitForSingleObject (signal_arrived, 10) == WAIT_OBJECT_0) \
98 return me.read_ready; \
101 #define set_handle_or_return_if_not_open(h, s) \
102 h = (s)->fh->get_handle (); \
103 if (fdtab.not_open ((s)->fd)) \
105 (s)->saw_error = TRUE; \
110 /* The main select code.
114 cygwin_select (int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
118 fd_set *dummy_readfds = allocfd_set (maxfds);
119 fd_set *dummy_writefds = allocfd_set (maxfds);
120 fd_set *dummy_exceptfds = allocfd_set (maxfds);
121 sigframe thisframe (mainthread, 0);
131 select_printf ("%d, %p, %p, %p, %p", maxfds, readfds, writefds, exceptfds, to);
134 readfds = dummy_readfds;
136 writefds = dummy_writefds;
138 exceptfds = dummy_exceptfds;
140 for (int i = 0; i < maxfds; i++)
141 if (!sel.test_and_set (i, readfds, writefds, exceptfds))
143 select_printf ("aborting due to test_and_set error");
144 return -1; /* Invalid fd, maybe? */
147 /* Convert to milliseconds or INFINITE if to == NULL */
148 DWORD ms = to ? (to->tv_sec * 1000) + (to->tv_usec / 1000) : INFINITE;
149 if (ms == 0 && to->tv_usec)
150 ms = 1; /* At least 1 ms granularity */
153 select_printf ("to->tv_sec %d, to->tv_usec %d, ms %d", to->tv_sec, to->tv_usec, ms);
155 select_printf ("to NULL, ms %x", ms);
157 select_printf ("sel.always_ready %d", sel.always_ready);
159 /* Degenerate case. No fds to wait for. Just wait. */
160 if (sel.start.next == NULL)
162 if (WaitForSingleObject (signal_arrived, ms) == WAIT_OBJECT_0)
164 select_printf ("signal received");
165 set_sig_errno (EINTR);
171 /* Allocate some fd_set structures using the number of fds as a guide. */
172 fd_set *r = allocfd_set (maxfds);
173 fd_set *w = allocfd_set (maxfds);
174 fd_set *e = allocfd_set (maxfds);
176 /* Don't bother waiting if one of the selected fds is "always ready". */
177 if ((!sel.always_ready || ms != 0) && sel.wait (r, w, e, ms))
178 return -1; /* some kind of error */
180 copyfd_set (readfds, r, maxfds);
181 copyfd_set (writefds, w, maxfds);
182 copyfd_set (exceptfds, e, maxfds);
183 return sel.poll (readfds, writefds, exceptfds);
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 = fdtab.select_read (i, s)) == NULL)
213 return 0; /* error */
214 if (UNIX_FD_ISSET (i, writefds) && (s = fdtab.select_write (i, s)) == NULL)
215 return 0; /* error */
216 if (UNIX_FD_ISSET (i, exceptfds) && (s = fdtab.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 (m > MAXIMUM_WAIT_OBJECTS)
264 if (!s->startup (s, this))
271 for (int i = 1; i < m; i++)
279 DWORD start_time = GetTickCount (); /* Record the current time for later use. */
281 debug_printf ("m %d, ms %u", m, ms);
285 wait_ret = WaitForMultipleObjects (m, w4, FALSE, ms);
287 wait_ret = MsgWaitForMultipleObjects (m, w4, FALSE, ms, QS_ALLINPUT);
292 select_printf ("signal received");
293 set_sig_errno (EINTR);
296 select_printf ("WaitForMultipleObjects failed");
300 select_printf ("timed out");
304 select_printf ("woke up. wait_ret %d. verifying", wait_ret);
307 while ((s = s->next))
309 return -1; /* Somebody detected an error */
310 else if ((((wait_ret >= m && s->windows_handle) || s->h == w4[wait_ret])) &&
311 s->verify (s, readfds, writefds, exceptfds))
314 select_printf ("gotone %d", gotone);
320 select_printf ("looping");
323 select_printf ("recalculating ms");
325 DWORD now = GetTickCount ();
326 if (now > (start_time + ms))
328 select_printf ("timed out after verification");
331 ms -= (now - start_time);
333 select_printf ("ms now %u", ms);
337 select_printf ("returning 0");
342 set_bits (select_record *me, fd_set *readfds, fd_set *writefds,
346 select_printf ("me %p, testing fd %d (%s)", me, me->fd, me->fh->get_name ());
347 if (me->read_selected && me->read_ready)
349 UNIX_FD_SET (me->fd, readfds);
352 if (me->write_selected && me->write_ready)
354 UNIX_FD_SET (me->fd, writefds);
357 if (me->except_ready && me->except_ready)
359 UNIX_FD_SET (me->fd, exceptfds);
362 select_printf ("ready %d", ready);
367 verify_true (select_record *, fd_set *, fd_set *, fd_set *)
373 verify_ok (select_record *me, fd_set *readfds, fd_set *writefds,
376 return set_bits (me, readfds, writefds, exceptfds);
380 no_startup (select_record *, select_stuff *)
386 no_verify (select_record *, fd_set *, fd_set *, fd_set *)
392 peek_pipe (select_record *s, int ignra)
396 fhandler_base *fh = s->fh;
399 set_handle_or_return_if_not_open (h, s);
401 /* Don't perform complicated tests if we don't need to. */
402 if (!s->read_selected && !s->except_selected)
405 if (s->read_selected)
409 select_printf ("already ready");
413 if (fh->bg_check (SIGTTIN) <= 0)
415 gotone = s->read_ready = 1;
419 if (!ignra && fh->get_device () != FH_PTYM && fh->get_device () != FH_TTYM &&
420 fh->get_readahead_valid ())
422 select_printf ("readahead");
423 gotone = s->read_ready = 1;
428 if (fh->get_device() != FH_PIPEW &&
429 !PeekNamedPipe (h, NULL, 0, NULL, (DWORD *) &n, NULL))
431 select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ());
437 select_printf ("%s, n %d", fh->get_name (), n);
438 if (s->except_selected)
439 gotone += s->except_ready = TRUE;
440 if (s->read_selected)
441 gotone += s->read_ready = TRUE;
443 if (n > 0 && s->read_selected)
445 select_printf ("%s, ready for read", fh->get_name ());
446 gotone += s->read_ready = TRUE;
448 if (!gotone && s->fh->hit_eof ())
450 select_printf ("%s, saw EOF", fh->get_name ());
451 if (s->except_selected)
452 gotone = s->except_ready = TRUE;
453 if (s->read_selected)
454 gotone += s->read_ready = TRUE;
455 select_printf ("saw eof on '%s'", fh->get_name ());
459 return gotone || s->write_ready;
463 poll_pipe (select_record *me, fd_set *readfds, fd_set *writefds,
466 return peek_pipe (me, 0) ?
467 set_bits (me, readfds, writefds, exceptfds) :
473 static int start_thread_pipe (select_record *me, select_stuff *stuff);
478 BOOL stop_thread_pipe;
479 select_record *start;
483 thread_pipe (void *arg)
485 pipeinf *pi = (pipeinf *)arg;
490 select_record *s = pi->start;
491 while ((s = s->next))
492 if (s->startup == start_thread_pipe)
494 if (peek_pipe (s, 0))
496 if (pi->stop_thread_pipe)
498 select_printf ("stopping");
503 if (pi->stop_thread_pipe)
505 select_printf ("stopping from outer loop");
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, char *);
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");
614 set_handle_or_return_if_not_open (h, me);
617 if (fh->bg_check (SIGTTIN) <= 0)
618 return me->read_ready = 1;
619 else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read)
623 if (irec.EventType == WINDOW_BUFFER_SIZE_EVENT)
624 kill_pgrp (fh->tc->getpgid (), SIGWINCH);
625 else if (irec.EventType == KEY_EVENT && irec.Event.KeyEvent.bKeyDown == TRUE &&
626 (irec.Event.KeyEvent.uChar.AsciiChar || get_nonascii_key (irec, tmpbuf)))
627 return me->read_ready = 1;
629 /* Read and discard the event */
630 ReadConsoleInput (h, &irec, 1, &events_read);
633 return me->write_ready;
637 poll_console (select_record *me, fd_set *readfds, fd_set *writefds,
640 return peek_console (me, 0) ?
641 set_bits (me, readfds, writefds, exceptfds) :
648 fhandler_console::select_read (select_record *s)
652 s = new select_record;
653 s->startup = no_startup;
654 s->poll = poll_console;
655 s->verify = poll_console;
659 s->h = get_handle ();
660 s->read_selected = TRUE;
665 fhandler_console::select_write (select_record *s)
669 s = new select_record;
670 s->startup = no_startup;
671 s->poll = poll_console;
672 s->verify = no_verify;
676 s->write_selected = TRUE;
677 s->write_ready = TRUE;
682 fhandler_console::select_except (select_record *s)
686 s = new select_record;
687 s->startup = no_startup;
688 s->poll = poll_console;
689 s->verify = no_verify;
693 s->except_selected = TRUE;
698 fhandler_tty_common::ready_for_read (int fd, DWORD howlong, int ignra)
701 if (myself->pgid && get_ttyp ()->getpgid () != myself->pgid &&
702 myself->ctty == ttynum) // background process?
703 return 1; // Yes. Let read return an error
705 return ((fhandler_pipe*)this)->fhandler_pipe::ready_for_read (fd, howlong, ignra);
709 fhandler_tty_common::select_read (select_record *s)
711 return ((fhandler_pipe*)this)->fhandler_pipe::select_read (s);
715 fhandler_tty_common::select_write (select_record *s)
717 return ((fhandler_pipe *)this)->fhandler_pipe::select_write (s);
721 fhandler_tty_common::select_except (select_record *s)
723 return ((fhandler_pipe *)this)->fhandler_pipe::select_except (s);
727 fhandler_dev_null::select_read (select_record *s)
731 s = new select_record;
732 s->startup = no_startup;
734 s->verify = no_verify;
736 s->h = get_handle ();
737 s->read_selected = TRUE;
742 fhandler_dev_null::select_write (select_record *s)
746 s = new select_record;
747 s->startup = no_startup;
749 s->verify = no_verify;
751 s->h = get_handle ();
752 s->write_selected = TRUE;
757 fhandler_dev_null::select_except (select_record *s)
761 s = new select_record;
762 s->startup = no_startup;
764 s->verify = no_verify;
766 s->h = get_handle ();
767 s->except_selected = TRUE;
768 s->except_ready = TRUE;
772 static int start_thread_serial (select_record *me, select_stuff *stuff);
777 BOOL stop_thread_serial;
778 select_record *start;
782 peek_serial (select_record *s, int)
787 fhandler_serial *fh = (fhandler_serial *)s->fh;
789 if (fh->get_readahead_valid () || fh->overlapped_armed < 0)
790 return s->read_ready = 1;
792 select_printf ("fh->overlapped_armed %d", fh->overlapped_armed);
795 set_handle_or_return_if_not_open (h, s);
798 if (s->read_selected && s->read_ready || (s->write_selected && s->write_ready))
800 select_printf ("already ready");
805 (void) SetCommMask (h, EV_RXCHAR);
807 if (!fh->overlapped_armed)
812 ResetEvent (fh->io_status.hEvent);
814 if (!ClearCommError (h, &ev, &st))
816 debug_printf ("ClearCommError");
820 return s->read_ready = 1;
821 else if (WaitCommEvent (h, &ev, &fh->io_status))
822 return s->read_ready = 1;
823 else if (GetLastError () == ERROR_IO_PENDING)
824 fh->overlapped_armed = 1;
827 debug_printf ("WaitCommEvent");
835 w4[0] = fh->io_status.hEvent;
836 w4[1] = signal_arrived;
839 switch (WaitForMultipleObjects (2, w4, FALSE, to))
842 if (!ClearCommError (h, &ev, &st))
844 debug_printf ("ClearCommError");
847 else if (!st.cbInQue)
851 return s->read_ready = 1;
852 select_printf ("got something");
854 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
856 case WAIT_OBJECT_0 + 1:
857 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
858 select_printf ("interrupt");
859 set_sig_errno (EINTR);
863 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
866 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
867 debug_printf ("WaitForMultipleObjects");
875 if (GetLastError () == ERROR_OPERATION_ABORTED)
877 select_printf ("operation aborted");
883 select_printf ("error %E");
888 thread_serial (void *arg)
890 serialinf *si = (serialinf *)arg;
895 select_record *s = si->start;
896 while ((s = s->next))
897 if (s->startup == start_thread_serial)
899 if (peek_serial (s, 0))
902 if (si->stop_thread_serial)
904 select_printf ("stopping");
911 select_printf ("exiting");
916 start_thread_serial (select_record *me, select_stuff *stuff)
918 if (stuff->device_specific[FHDEVN(FH_SERIAL)])
920 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_SERIAL)])->thread;
923 serialinf *si = new serialinf;
924 si->start = &stuff->start;
925 si->stop_thread_serial = FALSE;
926 si->thread = me->h = makethread (thread_serial, (LPVOID)si, 0, "select_serial");
929 stuff->device_specific[FHDEVN(FH_SERIAL)] = (void *)si;
934 serial_cleanup (select_record *, select_stuff *stuff)
936 serialinf *si = (serialinf *)stuff->device_specific[FHDEVN(FH_SERIAL)];
937 if (si && si->thread)
939 si->stop_thread_serial = TRUE;
940 WaitForSingleObject (si->thread, INFINITE);
941 CloseHandle (si->thread);
943 stuff->device_specific[FHDEVN(FH_SERIAL)] = NULL;
948 poll_serial (select_record *me, fd_set *readfds, fd_set *writefds,
952 return peek_serial (me, 0) ?
953 set_bits (me, readfds, writefds, exceptfds) :
960 fhandler_serial::select_read (select_record *s)
964 s = new select_record;
965 s->startup = start_thread_serial;
966 s->poll = poll_serial;
967 s->verify = verify_ok;
968 s->cleanup = serial_cleanup;
970 s->read_selected = TRUE;
975 fhandler_serial::select_write (select_record *s)
979 s = new select_record;
980 s->startup = no_startup;
982 s->verify = verify_ok;
984 s->h = get_handle ();
985 s->write_selected = TRUE;
986 s->write_ready = TRUE;
991 fhandler_serial::select_except (select_record *s)
995 s = new select_record;
996 s->startup = no_startup;
998 s->verify = verify_ok;
1001 s->except_selected = FALSE; // Can't do this
1006 fhandler_base::ready_for_read (int, DWORD, int)
1012 fhandler_base::select_read (select_record *s)
1016 s = new select_record;
1017 s->startup = no_startup;
1019 s->verify = verify_ok;
1021 s->h = get_handle ();
1022 s->read_selected = TRUE;
1023 s->read_ready = TRUE;
1028 fhandler_base::select_write (select_record *s)
1032 s = new select_record;
1033 s->startup = no_startup;
1035 s->verify = verify_ok;
1037 s->h = get_handle ();
1038 s->write_selected = TRUE;
1039 s->write_ready = TRUE;
1044 fhandler_base::select_except (select_record *s)
1048 s = new select_record;
1049 s->startup = no_startup;
1051 s->verify = verify_ok;
1054 s->write_selected = TRUE;
1061 winsock_fd_set readfds, writefds, exceptfds;
1063 struct sockaddr_in sin;
1064 select_record *start;
1068 peek_socket (select_record *me, int)
1070 winsock_fd_set ws_readfds, ws_writefds, ws_exceptfds;
1071 struct timeval tv = {0, 0};
1072 WINSOCK_FD_ZERO (&ws_readfds);
1073 WINSOCK_FD_ZERO (&ws_writefds);
1074 WINSOCK_FD_ZERO (&ws_exceptfds);
1078 set_handle_or_return_if_not_open (h, me);
1079 select_printf ("considering handle %p", h);
1081 if (me->read_selected)
1083 select_printf ("adding read fd_set %s, fd %d", me->fh->get_name (),
1085 WINSOCK_FD_SET (h, &ws_readfds);
1087 if (me->write_selected)
1089 select_printf ("adding write fd_set %s, fd %d", me->fh->get_name (),
1091 WINSOCK_FD_SET (h, &ws_writefds);
1093 if (me->except_selected)
1095 select_printf ("adding except fd_set %s, fd %d", me->fh->get_name (),
1097 WINSOCK_FD_SET (h, &ws_exceptfds);
1099 int r = WINSOCK_SELECT (0, &ws_readfds, &ws_writefds, &ws_exceptfds, &tv);
1100 select_printf ("WINSOCK_SELECT returned %d", r);
1103 select_printf ("error %d", WSAGetLastError ());
1107 if (WINSOCK_FD_ISSET (h, &ws_readfds) || (me->read_selected && me->read_ready))
1108 gotone = me->read_ready = TRUE;
1109 if (WINSOCK_FD_ISSET (h, &ws_writefds) || (me->write_selected && me->write_ready))
1110 gotone = me->write_ready = TRUE;
1111 if (WINSOCK_FD_ISSET (h, &ws_exceptfds) || (me->except_selected && me->except_ready))
1112 gotone = me->except_ready = TRUE;
1117 poll_socket (select_record *me, fd_set *readfds, fd_set *writefds,
1120 return peek_socket (me, 0) ?
1121 set_bits (me, readfds, writefds, exceptfds) :
1127 static int start_thread_socket (select_record *, select_stuff *);
1130 thread_socket (void *arg)
1132 socketinf *si = (socketinf *)arg;
1134 select_printf ("stuff_start %p", &si->start);
1135 int r = WINSOCK_SELECT (0, &si->readfds, &si->writefds, &si->exceptfds, NULL);
1136 select_printf ("Win32 select returned %d", r);
1138 select_printf ("error %d", WSAGetLastError ());
1139 select_record *s = si->start;
1140 while ((s = s->next))
1141 if (s->startup == start_thread_socket)
1143 HANDLE h = s->fh->get_handle ();
1144 select_printf ("s %p, testing fd %d (%s)", s, s->fd, s->fh->get_name ());
1145 if (WINSOCK_FD_ISSET (h, &si->readfds))
1147 select_printf ("read_ready");
1148 s->read_ready = TRUE;
1150 if (WINSOCK_FD_ISSET (h, &si->writefds))
1152 select_printf ("write_ready");
1153 s->write_ready = TRUE;
1155 if (WINSOCK_FD_ISSET (h, &si->exceptfds))
1157 select_printf ("except_ready");
1158 s->except_ready = TRUE;
1162 if (WINSOCK_FD_ISSET (si->exitsock, &si->readfds))
1163 select_printf ("saw exitsock read");
1168 extern "C" unsigned long htonl (unsigned long);
1171 start_thread_socket (select_record *me, select_stuff *stuff)
1175 if ((si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)]))
1182 WINSOCK_FD_ZERO (&si->readfds);
1183 WINSOCK_FD_ZERO (&si->writefds);
1184 WINSOCK_FD_ZERO (&si->exceptfds);
1185 select_record *s = &stuff->start;
1186 while ((s = s->next))
1187 if (s->startup == start_thread_socket)
1189 HANDLE h = s->fh->get_handle ();
1190 select_printf ("Handle %p", h);
1191 if (s->read_selected)
1193 WINSOCK_FD_SET (h, &si->readfds);
1194 select_printf ("Added to readfds");
1196 if (s->write_selected)
1198 WINSOCK_FD_SET (h, &si->writefds);
1199 select_printf ("Added to writefds");
1201 if (s->except_selected)
1203 WINSOCK_FD_SET (h, &si->exceptfds);
1204 select_printf ("Added to exceptfds");
1208 if ((si->exitsock = socket (PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
1210 set_winsock_errno ();
1211 select_printf ("cannot create socket, %E");
1214 /* Allow rapid reuse of the port. */
1216 (void) setsockopt (si->exitsock, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
1218 int sin_len = sizeof(si->sin);
1219 memset (&si->sin, 0, sizeof (si->sin));
1220 si->sin.sin_family = AF_INET;
1221 si->sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1222 if (bind (si->exitsock, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1224 select_printf ("cannot bind socket, %E");
1228 if (getsockname (si->exitsock, (struct sockaddr *) &si->sin, &sin_len) < 0)
1230 select_printf ("getsockname error");
1234 if (listen (si->exitsock, 1))
1236 select_printf ("listen failed, %E");
1240 select_printf ("exitsock %p", si->exitsock);
1241 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->readfds);
1242 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->exceptfds);
1243 stuff->device_specific[FHDEVN(FH_SOCKET)] = (void *) si;
1244 si->start = &stuff->start;
1245 select_printf ("stuff_start %p", &stuff->start);
1246 si->thread = me->h = makethread (thread_socket, (LPVOID)si, 0,
1251 set_winsock_errno ();
1252 closesocket (si->exitsock);
1257 socket_cleanup (select_record *, select_stuff *stuff)
1259 socketinf *si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)];
1260 select_printf ("si %p si->thread %p", si, si ? si->thread : NULL);
1261 if (si && si->thread)
1263 select_printf ("connection to si->exitsock %p", si->exitsock);
1264 SOCKET s = socket (AF_INET, SOCK_STREAM, 0);
1265 /* Connecting to si->exitsock will cause any executing select to wake
1266 up. When this happens then the exitsock condition will cause the
1267 thread to terminate. */
1268 if (connect (s, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1270 set_winsock_errno ();
1271 select_printf ("connect failed");
1272 /* FIXME: now what? */
1277 /* Wait for thread to go away */
1278 WaitForSingleObject (si->thread, INFINITE);
1279 shutdown (si->exitsock, 2);
1280 closesocket (si->exitsock);
1281 CloseHandle (si->thread);
1282 stuff->device_specific[FHDEVN(FH_SOCKET)] = NULL;
1285 select_printf ("returning");
1289 fhandler_socket::select_read (select_record *s)
1293 s = new select_record;
1294 s->startup = start_thread_socket;
1295 s->poll = poll_socket;
1296 s->verify = verify_true;
1297 s->cleanup = socket_cleanup;
1299 s->read_selected = TRUE;
1304 fhandler_socket::select_write (select_record *s)
1308 s = new select_record;
1309 s->startup = start_thread_socket;
1310 s->poll = poll_socket;
1311 s->verify = verify_true;
1312 s->cleanup = socket_cleanup;
1314 s->write_selected = TRUE;
1319 fhandler_socket::select_except (select_record *s)
1323 s = new select_record;
1324 s->startup = start_thread_socket;
1325 s->poll = poll_socket;
1326 s->verify = verify_true;
1327 s->cleanup = socket_cleanup;
1329 s->except_selected = TRUE;
1334 peek_windows (select_record *me, int)
1338 set_handle_or_return_if_not_open (h, me);
1340 if (me->read_selected && me->read_ready)
1343 if (PeekMessage (&m, (HWND) h, 0, 0, PM_NOREMOVE))
1345 me->read_ready = TRUE;
1346 select_printf ("window %d(%p) ready", me->fd, me->fh->get_handle ());
1350 select_printf ("window %d(%p) not ready", me->fd, me->fh->get_handle ());
1351 return me->write_ready;
1355 poll_windows (select_record *me, fd_set *readfds, fd_set *writefds,
1359 return peek_windows (me, 0) ?
1360 set_bits (me, readfds, writefds, exceptfds) :
1367 fhandler_windows::select_read (select_record *s)
1371 s = new select_record;
1372 s->startup = no_startup;
1373 s->poll = poll_windows;
1374 s->verify = poll_windows;
1376 s->h = get_handle ();
1377 s->read_selected = TRUE;
1378 s->h = get_handle ();
1379 s->windows_handle = TRUE;
1384 fhandler_windows::select_write (select_record *s)
1388 s = new select_record;
1389 s->startup = no_startup;
1391 s->verify = verify_ok;
1393 s->h = get_handle ();
1394 s->write_selected = TRUE;
1395 s->write_ready = TRUE;
1396 s->windows_handle = TRUE;
1401 fhandler_windows::select_except (select_record *s)
1405 s = new select_record;
1406 s->startup = no_startup;
1408 s->verify = verify_ok;
1410 s->h = get_handle ();
1411 s->except_selected = TRUE;
1412 s->except_ready = TRUE;
1413 s->windows_handle = TRUE;