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"
45 * All these defines below should be in sys/types.h
46 * but because of the includes above, they may not have
47 * been included. We create special UNIX_xxxx versions here.
51 #define NBBY 8 /* number of bits in a byte */
55 * Select uses bit masks of file descriptors in longs.
56 * These macros manipulate such bit fields (the filesystem macros use chars).
57 * FD_SETSIZE may be defined by the user, but the default here
58 * should be >= NOFILE (param.h).
62 #define UNIX_NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */
64 #define unix_howmany(x,y) (((x)+((y)-1))/(y))
67 #define unix_fd_set fd_set
69 #define NULL_fd_set ((fd_set *)NULL)
70 #define sizeof_fd_set(n) \
71 ((unsigned) (NULL_fd_set->fds_bits + unix_howmany((n), UNIX_NFDBITS)))
72 #define UNIX_FD_SET(n, p) \
73 ((p)->fds_bits[(n)/UNIX_NFDBITS] |= (1L << ((n) % UNIX_NFDBITS)))
74 #define UNIX_FD_CLR(n, p) \
75 ((p)->fds_bits[(n)/UNIX_NFDBITS] &= ~(1L << ((n) % UNIX_NFDBITS)))
76 #define UNIX_FD_ISSET(n, p) \
77 ((p)->fds_bits[(n)/UNIX_NFDBITS] & (1L << ((n) % UNIX_NFDBITS)))
78 #define UNIX_FD_ZERO(p, n) \
79 bzero ((caddr_t)(p), sizeof_fd_set ((n)))
81 #define allocfd_set(n) ((fd_set *) memset (alloca (sizeof_fd_set (n)), 0, sizeof_fd_set (n)))
82 #define copyfd_set(to, from, n) memcpy (to, from, sizeof_fd_set (n));
84 /* Make a fhandler_foo::ready_for_ready method.
85 Assumption: The "ready_for_read" methods are called with one level of
87 #define MAKEready(what) \
89 fhandler_##what::ready_for_read (int fd, DWORD howlong, int ignra) \
91 select_record me (this); \
93 (void) select_read (&me); \
94 while (!peek_##what (&me, ignra) && howlong == INFINITE) \
95 if (fd >= 0 && fdtab.not_open (fd)) \
97 else if (WaitForSingleObject (signal_arrived, 10) == WAIT_OBJECT_0) \
99 return me.read_ready; \
102 #define set_handle_or_return_if_not_open(h, s) \
103 h = (s)->fh->get_handle (); \
104 if (fdtab.not_open ((s)->fd)) \
106 (s)->saw_error = TRUE; \
111 /* The main select code.
115 cygwin_select (int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
119 fd_set *dummy_readfds = allocfd_set (maxfds);
120 fd_set *dummy_writefds = allocfd_set (maxfds);
121 fd_set *dummy_exceptfds = allocfd_set (maxfds);
122 sigframe thisframe (mainthread);
132 select_printf ("%d, %p, %p, %p, %p", maxfds, readfds, writefds, exceptfds, to);
135 readfds = dummy_readfds;
137 writefds = dummy_writefds;
139 exceptfds = dummy_exceptfds;
141 for (int i = 0; i < maxfds; 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 /* Allocate some fd_set structures using the number of fds as a guide. */
173 fd_set *r = allocfd_set (maxfds);
174 fd_set *w = allocfd_set (maxfds);
175 fd_set *e = allocfd_set (maxfds);
177 if (sel.always_ready || ms == 0)
178 /* Don't bother waiting. */;
179 else if (sel.wait (r, w, e, ms))
180 return -1; /* some kind of error */
182 copyfd_set (readfds, r, maxfds);
183 copyfd_set (writefds, w, maxfds);
184 copyfd_set (exceptfds, e, maxfds);
185 return sel.poll (readfds, writefds, exceptfds);
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 = fdtab.select_read (i, s)) == NULL)
215 return 0; /* error */
216 if (UNIX_FD_ISSET (i, writefds) && (s = fdtab.select_write (i, s)) == NULL)
217 return 0; /* error */
218 if (UNIX_FD_ISSET (i, exceptfds) && (s = fdtab.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 (m > MAXIMUM_WAIT_OBJECTS)
266 if (!s->startup (s, this))
273 for (int i = 1; i < m; i++)
281 DWORD start_time = GetTickCount (); /* Record the current time for later use. */
283 debug_printf ("m %d, ms %u", m, ms);
287 wait_ret = WaitForMultipleObjects (m, w4, FALSE, ms);
289 wait_ret = MsgWaitForMultipleObjects (m, w4, FALSE, ms, QS_ALLINPUT);
294 select_printf ("signal received");
295 set_sig_errno (EINTR);
298 select_printf ("WaitForMultipleObjects failed");
302 select_printf ("timed out");
306 select_printf ("woke up. wait_ret %d. verifying", wait_ret);
309 while ((s = s->next))
311 return -1; /* Somebody detected an error */
312 else if ((((wait_ret >= m && s->windows_handle) || s->h == w4[wait_ret])) &&
313 s->verify (s, readfds, writefds, exceptfds))
316 select_printf ("gotone %d", gotone);
322 select_printf ("looping");
325 select_printf ("recalculating ms");
327 DWORD now = GetTickCount ();
328 if (now > (start_time + ms))
330 select_printf ("timed out after verification");
333 ms -= (now - start_time);
335 select_printf ("ms now %u", ms);
339 select_printf ("returning 0");
344 set_bits (select_record *me, fd_set *readfds, fd_set *writefds,
348 select_printf ("me %p, testing fd %d (%s)", me, me->fd, me->fh->get_name ());
349 if (me->read_selected && me->read_ready)
351 UNIX_FD_SET (me->fd, readfds);
354 if (me->write_selected && me->write_ready)
356 UNIX_FD_SET (me->fd, writefds);
359 if (me->except_ready && me->except_ready)
361 UNIX_FD_SET (me->fd, exceptfds);
364 select_printf ("ready %d", ready);
369 verify_true (select_record *, fd_set *, fd_set *, fd_set *)
375 verify_ok (select_record *me, fd_set *readfds, fd_set *writefds,
378 return set_bits (me, readfds, writefds, exceptfds);
382 no_startup (select_record *, select_stuff *)
388 no_verify (select_record *, fd_set *, fd_set *, fd_set *)
394 peek_pipe (select_record *s, int ignra)
398 fhandler_base *fh = s->fh;
401 set_handle_or_return_if_not_open (h, s);
403 /* Don't perform complicated tests if we don't need to. */
404 if (!s->read_selected && !s->except_selected)
407 if (s->read_selected)
411 select_printf ("already ready");
415 if (fh->bg_check (SIGTTIN) <= 0)
417 gotone = s->read_ready = 1;
421 if (!ignra && fh->get_device () != FH_PTYM && fh->get_device () != FH_TTYM &&
422 fh->get_readahead_valid ())
424 select_printf ("readahead");
425 gotone = s->read_ready = 1;
430 if (fh->get_device() != FH_PIPEW &&
431 !PeekNamedPipe (h, NULL, 0, NULL, (DWORD *) &n, NULL))
433 select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ());
439 select_printf ("%s, n %d", fh->get_name (), n);
440 if (s->except_selected)
441 gotone += s->except_ready = TRUE;
442 if (s->read_selected)
443 gotone += s->read_ready = TRUE;
445 if (n > 0 && s->read_selected)
447 select_printf ("%s, ready for read", fh->get_name ());
448 gotone += s->read_ready = TRUE;
450 if (!gotone && s->fh->hit_eof ())
452 select_printf ("%s, saw EOF", fh->get_name ());
453 if (s->except_selected)
454 gotone = s->except_ready = TRUE;
455 if (s->read_selected)
456 gotone += s->read_ready = TRUE;
457 select_printf ("saw eof on '%s'", fh->get_name ());
461 return gotone || s->write_ready;
465 poll_pipe (select_record *me, fd_set *readfds, fd_set *writefds,
468 return peek_pipe (me, 0) ?
469 set_bits (me, readfds, writefds, exceptfds) :
475 static int start_thread_pipe (select_record *me, select_stuff *stuff);
480 BOOL stop_thread_pipe;
481 select_record *start;
485 thread_pipe (void *arg)
487 pipeinf *pi = (pipeinf *)arg;
492 select_record *s = pi->start;
493 while ((s = s->next))
494 if (s->startup == start_thread_pipe)
496 if (peek_pipe (s, 0))
498 if (pi->stop_thread_pipe)
500 select_printf ("stopping");
505 if (pi->stop_thread_pipe)
507 select_printf ("stopping from outer loop");
519 start_thread_pipe (select_record *me, select_stuff *stuff)
521 if (stuff->device_specific[FHDEVN(FH_PIPE)])
523 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_PIPE)])->thread;
526 pipeinf *pi = new pipeinf;
527 pi->start = &stuff->start;
528 pi->stop_thread_pipe = FALSE;
529 pi->thread = me->h = makethread (thread_pipe, (LPVOID)pi, 0, "select_pipe");
532 stuff->device_specific[FHDEVN(FH_PIPE)] = (void *)pi;
537 pipe_cleanup (select_record *, select_stuff *stuff)
539 pipeinf *pi = (pipeinf *)stuff->device_specific[FHDEVN(FH_PIPE)];
540 if (pi && pi->thread)
542 pi->stop_thread_pipe = TRUE;
543 WaitForSingleObject (pi->thread, INFINITE);
544 CloseHandle (pi->thread);
546 stuff->device_specific[FHDEVN(FH_PIPE)] = NULL;
551 fhandler_pipe::select_read (select_record *s)
554 s = new select_record;
555 s->startup = start_thread_pipe;
557 s->verify = verify_ok;
558 s->read_selected = TRUE;
559 s->cleanup = pipe_cleanup;
564 fhandler_pipe::select_write (select_record *s)
568 s = new select_record;
569 s->startup = no_startup;
571 s->verify = no_verify;
573 s->write_selected = TRUE;
574 s->write_ready = TRUE;
579 fhandler_pipe::select_except (select_record *s)
582 s = new select_record;
583 s->startup = start_thread_pipe;
585 s->verify = verify_ok;
586 s->cleanup = pipe_cleanup;
587 s->except_selected = TRUE;
592 peek_console (select_record *me, int ignra)
594 extern const char * get_nonascii_key (INPUT_RECORD& input_rec, char *);
595 fhandler_console *fh = (fhandler_console *)me->fh;
597 if (!me->read_selected)
598 return me->write_ready;
600 if (!ignra && fh->get_readahead_valid ())
602 select_printf ("readahead");
603 return me->read_ready = 1;
608 select_printf ("already ready");
616 set_handle_or_return_if_not_open (h, me);
619 if (fh->bg_check (SIGTTIN) <= 0)
620 return me->read_ready = 1;
621 else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read)
625 if (irec.EventType == WINDOW_BUFFER_SIZE_EVENT)
626 kill_pgrp (fh->tc->getpgid (), SIGWINCH);
627 else if (irec.EventType == KEY_EVENT && irec.Event.KeyEvent.bKeyDown == TRUE &&
628 (irec.Event.KeyEvent.uChar.AsciiChar || get_nonascii_key (irec, tmpbuf)))
629 return me->read_ready = 1;
631 /* Read and discard the event */
632 ReadConsoleInput (h, &irec, 1, &events_read);
635 return me->write_ready;
639 poll_console (select_record *me, fd_set *readfds, fd_set *writefds,
642 return peek_console (me, 0) ?
643 set_bits (me, readfds, writefds, exceptfds) :
650 fhandler_console::select_read (select_record *s)
654 s = new select_record;
655 s->startup = no_startup;
656 s->poll = poll_console;
657 s->verify = poll_console;
661 s->h = get_handle ();
662 s->read_selected = TRUE;
667 fhandler_console::select_write (select_record *s)
671 s = new select_record;
672 s->startup = no_startup;
673 s->poll = poll_console;
674 s->verify = no_verify;
678 s->write_selected = TRUE;
679 s->write_ready = TRUE;
684 fhandler_console::select_except (select_record *s)
688 s = new select_record;
689 s->startup = no_startup;
690 s->poll = poll_console;
691 s->verify = no_verify;
695 s->except_selected = TRUE;
700 fhandler_tty_common::ready_for_read (int fd, DWORD howlong, int ignra)
703 if (myself->pgid && get_ttyp ()->getpgid () != myself->pgid &&
704 myself->ctty == ttynum) // background process?
705 return 1; // Yes. Let read return an error
707 return ((fhandler_pipe*)this)->fhandler_pipe::ready_for_read (fd, howlong, ignra);
711 fhandler_tty_common::select_read (select_record *s)
713 return ((fhandler_pipe*)this)->fhandler_pipe::select_read (s);
717 fhandler_tty_common::select_write (select_record *s)
719 return ((fhandler_pipe *)this)->fhandler_pipe::select_write (s);
723 fhandler_tty_common::select_except (select_record *s)
725 return ((fhandler_pipe *)this)->fhandler_pipe::select_except (s);
729 fhandler_dev_null::select_read (select_record *s)
733 s = new select_record;
734 s->startup = no_startup;
736 s->verify = no_verify;
738 s->h = get_handle ();
739 s->read_selected = TRUE;
744 fhandler_dev_null::select_write (select_record *s)
748 s = new select_record;
749 s->startup = no_startup;
751 s->verify = no_verify;
753 s->h = get_handle ();
754 s->write_selected = TRUE;
759 fhandler_dev_null::select_except (select_record *s)
763 s = new select_record;
764 s->startup = no_startup;
766 s->verify = no_verify;
768 s->h = get_handle ();
769 s->except_selected = TRUE;
770 s->except_ready = TRUE;
774 static int start_thread_serial (select_record *me, select_stuff *stuff);
779 BOOL stop_thread_serial;
780 select_record *start;
784 peek_serial (select_record *s, int)
789 fhandler_serial *fh = (fhandler_serial *)s->fh;
791 if (fh->get_readahead_valid () || fh->overlapped_armed < 0)
792 return s->read_ready = 1;
794 select_printf ("fh->overlapped_armed %d", fh->overlapped_armed);
797 set_handle_or_return_if_not_open (h, s);
800 if (s->read_selected && s->read_ready || (s->write_selected && s->write_ready))
802 select_printf ("already ready");
807 (void) SetCommMask (h, EV_RXCHAR);
809 if (!fh->overlapped_armed)
814 ResetEvent (fh->io_status.hEvent);
816 if (!ClearCommError (h, &ev, &st))
818 debug_printf ("ClearCommError");
822 return s->read_ready = 1;
823 else if (WaitCommEvent (h, &ev, &fh->io_status))
824 return s->read_ready = 1;
825 else if (GetLastError () == ERROR_IO_PENDING)
826 fh->overlapped_armed = 1;
829 debug_printf ("WaitCommEvent");
837 w4[0] = fh->io_status.hEvent;
838 w4[1] = signal_arrived;
841 switch (WaitForMultipleObjects (2, w4, FALSE, to))
844 if (!ClearCommError (h, &ev, &st))
846 debug_printf ("ClearCommError");
849 else if (!st.cbInQue)
853 return s->read_ready = 1;
854 select_printf ("got something");
856 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
858 case WAIT_OBJECT_0 + 1:
859 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
860 select_printf ("interrupt");
861 set_sig_errno (EINTR);
865 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
868 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
869 debug_printf ("WaitForMultipleObjects");
877 if (GetLastError () == ERROR_OPERATION_ABORTED)
879 select_printf ("operation aborted");
885 select_printf ("error %E");
890 thread_serial (void *arg)
892 serialinf *si = (serialinf *)arg;
897 select_record *s = si->start;
898 while ((s = s->next))
899 if (s->startup == start_thread_serial)
901 if (peek_serial (s, 0))
904 if (si->stop_thread_serial)
906 select_printf ("stopping");
913 select_printf ("exiting");
918 start_thread_serial (select_record *me, select_stuff *stuff)
920 if (stuff->device_specific[FHDEVN(FH_SERIAL)])
922 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_SERIAL)])->thread;
925 serialinf *si = new serialinf;
926 si->start = &stuff->start;
927 si->stop_thread_serial = FALSE;
928 si->thread = me->h = makethread (thread_serial, (LPVOID)si, 0, "select_serial");
931 stuff->device_specific[FHDEVN(FH_SERIAL)] = (void *)si;
936 serial_cleanup (select_record *, select_stuff *stuff)
938 serialinf *si = (serialinf *)stuff->device_specific[FHDEVN(FH_SERIAL)];
939 if (si && si->thread)
941 si->stop_thread_serial = TRUE;
942 WaitForSingleObject (si->thread, INFINITE);
943 CloseHandle (si->thread);
945 stuff->device_specific[FHDEVN(FH_SERIAL)] = NULL;
950 poll_serial (select_record *me, fd_set *readfds, fd_set *writefds,
954 return peek_serial (me, 0) ?
955 set_bits (me, readfds, writefds, exceptfds) :
962 fhandler_serial::select_read (select_record *s)
966 s = new select_record;
967 s->startup = start_thread_serial;
968 s->poll = poll_serial;
969 s->verify = verify_ok;
970 s->cleanup = serial_cleanup;
972 s->read_selected = TRUE;
977 fhandler_serial::select_write (select_record *s)
981 s = new select_record;
982 s->startup = no_startup;
984 s->verify = verify_ok;
986 s->h = get_handle ();
987 s->write_selected = TRUE;
988 s->write_ready = TRUE;
993 fhandler_serial::select_except (select_record *s)
997 s = new select_record;
998 s->startup = no_startup;
1000 s->verify = verify_ok;
1003 s->except_selected = FALSE; // Can't do this
1008 fhandler_base::ready_for_read (int, DWORD, int)
1014 fhandler_base::select_read (select_record *s)
1018 s = new select_record;
1019 s->startup = no_startup;
1021 s->verify = verify_ok;
1023 s->h = get_handle ();
1024 s->read_selected = TRUE;
1025 s->read_ready = TRUE;
1030 fhandler_base::select_write (select_record *s)
1034 s = new select_record;
1035 s->startup = no_startup;
1037 s->verify = verify_ok;
1039 s->h = get_handle ();
1040 s->write_selected = TRUE;
1041 s->write_ready = TRUE;
1046 fhandler_base::select_except (select_record *s)
1050 s = new select_record;
1051 s->startup = no_startup;
1053 s->verify = verify_ok;
1056 s->write_selected = TRUE;
1063 winsock_fd_set readfds, writefds, exceptfds;
1065 struct sockaddr_in sin;
1066 select_record *start;
1070 peek_socket (select_record *me, int)
1072 winsock_fd_set ws_readfds, ws_writefds, ws_exceptfds;
1073 struct timeval tv = {0, 0};
1074 WINSOCK_FD_ZERO (&ws_readfds);
1075 WINSOCK_FD_ZERO (&ws_writefds);
1076 WINSOCK_FD_ZERO (&ws_exceptfds);
1080 set_handle_or_return_if_not_open (h, me);
1081 select_printf ("considering handle %p", h);
1083 if (me->read_selected)
1085 select_printf ("adding read fd_set %s, fd %d", me->fh->get_name (),
1087 WINSOCK_FD_SET (h, &ws_readfds);
1089 if (me->write_selected)
1091 select_printf ("adding write fd_set %s, fd %d", me->fh->get_name (),
1093 WINSOCK_FD_SET (h, &ws_writefds);
1095 if (me->except_selected)
1097 select_printf ("adding except fd_set %s, fd %d", me->fh->get_name (),
1099 WINSOCK_FD_SET (h, &ws_exceptfds);
1101 int r = WINSOCK_SELECT (0, &ws_readfds, &ws_writefds, &ws_exceptfds, &tv);
1102 select_printf ("WINSOCK_SELECT returned %d", r);
1105 select_printf ("error %d", WSAGetLastError ());
1109 if (WINSOCK_FD_ISSET (h, &ws_readfds) || (me->read_selected && me->read_ready))
1110 gotone = me->read_ready = TRUE;
1111 if (WINSOCK_FD_ISSET (h, &ws_writefds) || (me->write_selected && me->write_ready))
1112 gotone = me->write_ready = TRUE;
1113 if (WINSOCK_FD_ISSET (h, &ws_exceptfds) || (me->except_selected && me->except_ready))
1114 gotone = me->except_ready = TRUE;
1119 poll_socket (select_record *me, fd_set *readfds, fd_set *writefds,
1122 return peek_socket (me, 0) ?
1123 set_bits (me, readfds, writefds, exceptfds) :
1129 static int start_thread_socket (select_record *, select_stuff *);
1132 thread_socket (void *arg)
1134 socketinf *si = (socketinf *)arg;
1136 select_printf ("stuff_start %p", &si->start);
1137 int r = WINSOCK_SELECT (0, &si->readfds, &si->writefds, &si->exceptfds, NULL);
1138 select_printf ("Win32 select returned %d", r);
1140 select_printf ("error %d", WSAGetLastError ());
1141 select_record *s = si->start;
1142 while ((s = s->next))
1143 if (s->startup == start_thread_socket)
1145 HANDLE h = s->fh->get_handle ();
1146 select_printf ("s %p, testing fd %d (%s)", s, s->fd, s->fh->get_name ());
1147 if (WINSOCK_FD_ISSET (h, &si->readfds))
1149 select_printf ("read_ready");
1150 s->read_ready = TRUE;
1152 if (WINSOCK_FD_ISSET (h, &si->writefds))
1154 select_printf ("write_ready");
1155 s->write_ready = TRUE;
1157 if (WINSOCK_FD_ISSET (h, &si->exceptfds))
1159 select_printf ("except_ready");
1160 s->except_ready = TRUE;
1164 if (WINSOCK_FD_ISSET (si->exitsock, &si->readfds))
1165 select_printf ("saw exitsock read");
1170 extern "C" unsigned long htonl (unsigned long);
1173 start_thread_socket (select_record *me, select_stuff *stuff)
1177 if ((si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)]))
1184 WINSOCK_FD_ZERO (&si->readfds);
1185 WINSOCK_FD_ZERO (&si->writefds);
1186 WINSOCK_FD_ZERO (&si->exceptfds);
1187 select_record *s = &stuff->start;
1188 while ((s = s->next))
1189 if (s->startup == start_thread_socket)
1191 HANDLE h = s->fh->get_handle ();
1192 select_printf ("Handle %p", h);
1193 if (s->read_selected)
1195 WINSOCK_FD_SET (h, &si->readfds);
1196 select_printf ("Added to readfds");
1198 if (s->write_selected)
1200 WINSOCK_FD_SET (h, &si->writefds);
1201 select_printf ("Added to writefds");
1203 if (s->except_selected)
1205 WINSOCK_FD_SET (h, &si->exceptfds);
1206 select_printf ("Added to exceptfds");
1210 if ((si->exitsock = socket (PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
1212 set_winsock_errno ();
1213 select_printf ("cannot create socket, %E");
1216 /* Allow rapid reuse of the port. */
1218 (void) setsockopt (si->exitsock, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
1220 int sin_len = sizeof(si->sin);
1221 memset (&si->sin, 0, sizeof (si->sin));
1222 si->sin.sin_family = AF_INET;
1223 si->sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1224 if (bind (si->exitsock, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1226 select_printf ("cannot bind socket, %E");
1230 if (getsockname (si->exitsock, (struct sockaddr *) &si->sin, &sin_len) < 0)
1232 select_printf ("getsockname error");
1236 if (listen (si->exitsock, 1))
1238 select_printf ("listen failed, %E");
1242 select_printf ("exitsock %p", si->exitsock);
1243 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->readfds);
1244 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->exceptfds);
1245 stuff->device_specific[FHDEVN(FH_SOCKET)] = (void *) si;
1246 si->start = &stuff->start;
1247 select_printf ("stuff_start %p", &stuff->start);
1248 si->thread = me->h = makethread (thread_socket, (LPVOID)si, 0,
1253 set_winsock_errno ();
1254 closesocket (si->exitsock);
1259 socket_cleanup (select_record *, select_stuff *stuff)
1261 socketinf *si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)];
1262 select_printf ("si %p si->thread %p", si, si ? si->thread : NULL);
1263 if (si && si->thread)
1265 select_printf ("connection to si->exitsock %p", si->exitsock);
1266 SOCKET s = socket (AF_INET, SOCK_STREAM, 0);
1267 /* Connecting to si->exitsock will cause any executing select to wake
1268 up. When this happens then the exitsock condition will cause the
1269 thread to terminate. */
1270 if (connect (s, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1272 set_winsock_errno ();
1273 select_printf ("connect failed");
1274 /* FIXME: now what? */
1279 /* Wait for thread to go away */
1280 WaitForSingleObject (si->thread, INFINITE);
1281 shutdown (si->exitsock, 2);
1282 closesocket (si->exitsock);
1283 CloseHandle (si->thread);
1284 stuff->device_specific[FHDEVN(FH_SOCKET)] = NULL;
1287 select_printf ("returning");
1291 fhandler_socket::select_read (select_record *s)
1295 s = new select_record;
1296 s->startup = start_thread_socket;
1297 s->poll = poll_socket;
1298 s->verify = verify_true;
1299 s->cleanup = socket_cleanup;
1301 s->read_selected = TRUE;
1306 fhandler_socket::select_write (select_record *s)
1310 s = new select_record;
1311 s->startup = start_thread_socket;
1312 s->poll = poll_socket;
1313 s->verify = verify_true;
1314 s->cleanup = socket_cleanup;
1316 s->write_selected = TRUE;
1321 fhandler_socket::select_except (select_record *s)
1325 s = new select_record;
1326 s->startup = start_thread_socket;
1327 s->poll = poll_socket;
1328 s->verify = verify_true;
1329 s->cleanup = socket_cleanup;
1331 s->except_selected = TRUE;
1336 peek_windows (select_record *me, int)
1340 set_handle_or_return_if_not_open (h, me);
1342 if (me->read_selected && me->read_ready)
1345 if (PeekMessage (&m, (HWND) h, 0, 0, PM_NOREMOVE))
1347 me->read_ready = TRUE;
1348 select_printf ("window %d(%p) ready", me->fd, me->fh->get_handle ());
1352 select_printf ("window %d(%p) not ready", me->fd, me->fh->get_handle ());
1353 return me->write_ready;
1357 poll_windows (select_record *me, fd_set *readfds, fd_set *writefds,
1361 return peek_windows (me, 0) ?
1362 set_bits (me, readfds, writefds, exceptfds) :
1369 fhandler_windows::select_read (select_record *s)
1373 s = new select_record;
1374 s->startup = no_startup;
1375 s->poll = poll_windows;
1376 s->verify = poll_windows;
1378 s->h = get_handle ();
1379 s->read_selected = TRUE;
1380 s->h = get_handle ();
1381 s->windows_handle = TRUE;
1386 fhandler_windows::select_write (select_record *s)
1390 s = new select_record;
1391 s->startup = no_startup;
1393 s->verify = verify_ok;
1395 s->h = get_handle ();
1396 s->write_selected = TRUE;
1397 s->write_ready = TRUE;
1398 s->windows_handle = TRUE;
1403 fhandler_windows::select_except (select_record *s)
1407 s = new select_record;
1408 s->startup = no_startup;
1410 s->verify = verify_ok;
1412 s->h = get_handle ();
1413 s->except_selected = TRUE;
1414 s->except_ready = TRUE;
1415 s->windows_handle = TRUE;