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) <= bg_eof)
417 gotone = s->read_ready = 1;
421 switch (fh->get_device ())
425 if (((fhandler_pty_master *)fh)->need_nl)
427 gotone = s->read_ready = 1;
432 if (!ignra && fh->get_readahead_valid ())
434 select_printf ("readahead");
435 gotone = s->read_ready = 1;
441 if (fh->get_device() != FH_PIPEW &&
442 !PeekNamedPipe (h, NULL, 0, NULL, (DWORD *) &n, NULL))
444 select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ());
450 select_printf ("%s, n %d", fh->get_name (), n);
451 if (s->except_selected)
452 gotone += s->except_ready = TRUE;
453 if (s->read_selected)
454 gotone += s->read_ready = TRUE;
456 if (n > 0 && s->read_selected)
458 select_printf ("%s, ready for read", fh->get_name ());
459 gotone += s->read_ready = TRUE;
461 if (!gotone && s->fh->hit_eof ())
463 select_printf ("%s, saw EOF", fh->get_name ());
464 if (s->except_selected)
465 gotone = s->except_ready = TRUE;
466 if (s->read_selected)
467 gotone += s->read_ready = TRUE;
468 select_printf ("saw eof on '%s'", fh->get_name ());
472 return gotone || s->write_ready;
476 poll_pipe (select_record *me, fd_set *readfds, fd_set *writefds,
479 return peek_pipe (me, 0) ?
480 set_bits (me, readfds, writefds, exceptfds) :
486 static int start_thread_pipe (select_record *me, select_stuff *stuff);
491 BOOL stop_thread_pipe;
492 select_record *start;
496 thread_pipe (void *arg)
498 pipeinf *pi = (pipeinf *)arg;
503 select_record *s = pi->start;
504 while ((s = s->next))
505 if (s->startup == start_thread_pipe)
507 if (peek_pipe (s, 0))
509 if (pi->stop_thread_pipe)
511 select_printf ("stopping");
516 if (pi->stop_thread_pipe)
518 select_printf ("stopping from outer loop");
530 start_thread_pipe (select_record *me, select_stuff *stuff)
532 if (stuff->device_specific[FHDEVN(FH_PIPE)])
534 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_PIPE)])->thread;
537 pipeinf *pi = new pipeinf;
538 pi->start = &stuff->start;
539 pi->stop_thread_pipe = FALSE;
540 pi->thread = me->h = makethread (thread_pipe, (LPVOID)pi, 0, "select_pipe");
543 stuff->device_specific[FHDEVN(FH_PIPE)] = (void *)pi;
548 pipe_cleanup (select_record *, select_stuff *stuff)
550 pipeinf *pi = (pipeinf *)stuff->device_specific[FHDEVN(FH_PIPE)];
551 if (pi && pi->thread)
553 pi->stop_thread_pipe = TRUE;
554 WaitForSingleObject (pi->thread, INFINITE);
555 CloseHandle (pi->thread);
557 stuff->device_specific[FHDEVN(FH_PIPE)] = NULL;
562 fhandler_pipe::select_read (select_record *s)
565 s = new select_record;
566 s->startup = start_thread_pipe;
568 s->verify = verify_ok;
569 s->read_selected = TRUE;
570 s->cleanup = pipe_cleanup;
575 fhandler_pipe::select_write (select_record *s)
579 s = new select_record;
580 s->startup = no_startup;
582 s->verify = no_verify;
584 s->write_selected = TRUE;
585 s->write_ready = TRUE;
590 fhandler_pipe::select_except (select_record *s)
593 s = new select_record;
594 s->startup = start_thread_pipe;
596 s->verify = verify_ok;
597 s->cleanup = pipe_cleanup;
598 s->except_selected = TRUE;
603 peek_console (select_record *me, int ignra)
605 extern const char * get_nonascii_key (INPUT_RECORD& input_rec, char *);
606 fhandler_console *fh = (fhandler_console *)me->fh;
608 if (!me->read_selected)
609 return me->write_ready;
611 if (!ignra && fh->get_readahead_valid ())
613 select_printf ("readahead");
614 return me->read_ready = 1;
619 select_printf ("already ready");
627 set_handle_or_return_if_not_open (h, me);
630 if (fh->bg_check (SIGTTIN) <= bg_eof)
631 return me->read_ready = 1;
632 else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read)
636 if (irec.EventType == WINDOW_BUFFER_SIZE_EVENT)
637 kill_pgrp (fh->tc->getpgid (), SIGWINCH);
638 else if (irec.EventType == MOUSE_EVENT &&
639 (irec.Event.MouseEvent.dwEventFlags == 0 ||
640 irec.Event.MouseEvent.dwEventFlags == DOUBLE_CLICK))
642 if (fh->mouse_aware ())
643 return me->read_ready = 1;
645 else if (irec.EventType == KEY_EVENT && irec.Event.KeyEvent.bKeyDown == TRUE &&
646 (irec.Event.KeyEvent.uChar.AsciiChar || get_nonascii_key (irec, tmpbuf)))
647 return me->read_ready = 1;
649 /* Read and discard the event */
650 ReadConsoleInput (h, &irec, 1, &events_read);
653 return me->write_ready;
657 poll_console (select_record *me, fd_set *readfds, fd_set *writefds,
660 return peek_console (me, 0) ?
661 set_bits (me, readfds, writefds, exceptfds) :
668 fhandler_console::select_read (select_record *s)
672 s = new select_record;
673 s->startup = no_startup;
674 s->poll = poll_console;
675 s->verify = poll_console;
679 s->h = get_handle ();
680 s->read_selected = TRUE;
685 fhandler_console::select_write (select_record *s)
689 s = new select_record;
690 s->startup = no_startup;
691 s->poll = poll_console;
692 s->verify = no_verify;
696 s->write_selected = TRUE;
697 s->write_ready = TRUE;
702 fhandler_console::select_except (select_record *s)
706 s = new select_record;
707 s->startup = no_startup;
708 s->poll = poll_console;
709 s->verify = no_verify;
713 s->except_selected = TRUE;
718 fhandler_tty_common::ready_for_read (int fd, DWORD howlong, int ignra)
721 if (myself->pgid && get_ttyp ()->getpgid () != myself->pgid &&
722 myself->ctty == ttynum) // background process?
723 return 1; // Yes. Let read return an error
725 return ((fhandler_pipe*)this)->fhandler_pipe::ready_for_read (fd, howlong, ignra);
729 fhandler_tty_common::select_read (select_record *s)
731 return ((fhandler_pipe*)this)->fhandler_pipe::select_read (s);
735 fhandler_tty_common::select_write (select_record *s)
737 return ((fhandler_pipe *)this)->fhandler_pipe::select_write (s);
741 fhandler_tty_common::select_except (select_record *s)
743 return ((fhandler_pipe *)this)->fhandler_pipe::select_except (s);
747 fhandler_dev_null::select_read (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->read_selected = TRUE;
762 fhandler_dev_null::select_write (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->write_selected = TRUE;
777 fhandler_dev_null::select_except (select_record *s)
781 s = new select_record;
782 s->startup = no_startup;
784 s->verify = no_verify;
786 s->h = get_handle ();
787 s->except_selected = TRUE;
788 s->except_ready = TRUE;
792 static int start_thread_serial (select_record *me, select_stuff *stuff);
797 BOOL stop_thread_serial;
798 select_record *start;
802 peek_serial (select_record *s, int)
807 fhandler_serial *fh = (fhandler_serial *)s->fh;
809 if (fh->get_readahead_valid () || fh->overlapped_armed < 0)
810 return s->read_ready = 1;
812 select_printf ("fh->overlapped_armed %d", fh->overlapped_armed);
815 set_handle_or_return_if_not_open (h, s);
818 if (s->read_selected && s->read_ready || (s->write_selected && s->write_ready))
820 select_printf ("already ready");
825 (void) SetCommMask (h, EV_RXCHAR);
827 if (!fh->overlapped_armed)
832 ResetEvent (fh->io_status.hEvent);
834 if (!ClearCommError (h, &ev, &st))
836 debug_printf ("ClearCommError");
840 return s->read_ready = 1;
841 else if (WaitCommEvent (h, &ev, &fh->io_status))
842 return s->read_ready = 1;
843 else if (GetLastError () == ERROR_IO_PENDING)
844 fh->overlapped_armed = 1;
847 debug_printf ("WaitCommEvent");
855 w4[0] = fh->io_status.hEvent;
856 w4[1] = signal_arrived;
859 switch (WaitForMultipleObjects (2, w4, FALSE, to))
862 if (!ClearCommError (h, &ev, &st))
864 debug_printf ("ClearCommError");
867 else if (!st.cbInQue)
871 return s->read_ready = 1;
872 select_printf ("got something");
874 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
876 case WAIT_OBJECT_0 + 1:
877 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
878 select_printf ("interrupt");
879 set_sig_errno (EINTR);
883 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
886 PurgeComm (h, PURGE_TXABORT | PURGE_RXABORT);
887 debug_printf ("WaitForMultipleObjects");
895 if (GetLastError () == ERROR_OPERATION_ABORTED)
897 select_printf ("operation aborted");
903 select_printf ("error %E");
908 thread_serial (void *arg)
910 serialinf *si = (serialinf *)arg;
915 select_record *s = si->start;
916 while ((s = s->next))
917 if (s->startup == start_thread_serial)
919 if (peek_serial (s, 0))
922 if (si->stop_thread_serial)
924 select_printf ("stopping");
931 select_printf ("exiting");
936 start_thread_serial (select_record *me, select_stuff *stuff)
938 if (stuff->device_specific[FHDEVN(FH_SERIAL)])
940 me->h = ((pipeinf *) stuff->device_specific[FHDEVN(FH_SERIAL)])->thread;
943 serialinf *si = new serialinf;
944 si->start = &stuff->start;
945 si->stop_thread_serial = FALSE;
946 si->thread = me->h = makethread (thread_serial, (LPVOID)si, 0, "select_serial");
949 stuff->device_specific[FHDEVN(FH_SERIAL)] = (void *)si;
954 serial_cleanup (select_record *, select_stuff *stuff)
956 serialinf *si = (serialinf *)stuff->device_specific[FHDEVN(FH_SERIAL)];
957 if (si && si->thread)
959 si->stop_thread_serial = TRUE;
960 WaitForSingleObject (si->thread, INFINITE);
961 CloseHandle (si->thread);
963 stuff->device_specific[FHDEVN(FH_SERIAL)] = NULL;
968 poll_serial (select_record *me, fd_set *readfds, fd_set *writefds,
972 return peek_serial (me, 0) ?
973 set_bits (me, readfds, writefds, exceptfds) :
980 fhandler_serial::select_read (select_record *s)
984 s = new select_record;
985 s->startup = start_thread_serial;
986 s->poll = poll_serial;
987 s->verify = verify_ok;
988 s->cleanup = serial_cleanup;
990 s->read_selected = TRUE;
995 fhandler_serial::select_write (select_record *s)
999 s = new select_record;
1000 s->startup = no_startup;
1002 s->verify = verify_ok;
1004 s->h = get_handle ();
1005 s->write_selected = TRUE;
1006 s->write_ready = TRUE;
1011 fhandler_serial::select_except (select_record *s)
1015 s = new select_record;
1016 s->startup = no_startup;
1018 s->verify = verify_ok;
1021 s->except_selected = FALSE; // Can't do this
1026 fhandler_base::ready_for_read (int, DWORD, int)
1032 fhandler_base::select_read (select_record *s)
1036 s = new select_record;
1037 s->startup = no_startup;
1039 s->verify = verify_ok;
1041 s->h = get_handle ();
1042 s->read_selected = TRUE;
1043 s->read_ready = TRUE;
1048 fhandler_base::select_write (select_record *s)
1052 s = new select_record;
1053 s->startup = no_startup;
1055 s->verify = verify_ok;
1057 s->h = get_handle ();
1058 s->write_selected = TRUE;
1059 s->write_ready = TRUE;
1064 fhandler_base::select_except (select_record *s)
1068 s = new select_record;
1069 s->startup = no_startup;
1071 s->verify = verify_ok;
1074 s->write_selected = TRUE;
1081 winsock_fd_set readfds, writefds, exceptfds;
1083 struct sockaddr_in sin;
1084 select_record *start;
1088 peek_socket (select_record *me, int)
1090 winsock_fd_set ws_readfds, ws_writefds, ws_exceptfds;
1091 struct timeval tv = {0, 0};
1092 WINSOCK_FD_ZERO (&ws_readfds);
1093 WINSOCK_FD_ZERO (&ws_writefds);
1094 WINSOCK_FD_ZERO (&ws_exceptfds);
1098 set_handle_or_return_if_not_open (h, me);
1099 select_printf ("considering handle %p", h);
1101 if (me->read_selected)
1103 select_printf ("adding read fd_set %s, fd %d", me->fh->get_name (),
1105 WINSOCK_FD_SET (h, &ws_readfds);
1107 if (me->write_selected)
1109 select_printf ("adding write fd_set %s, fd %d", me->fh->get_name (),
1111 WINSOCK_FD_SET (h, &ws_writefds);
1113 if (me->except_selected)
1115 select_printf ("adding except fd_set %s, fd %d", me->fh->get_name (),
1117 WINSOCK_FD_SET (h, &ws_exceptfds);
1119 int r = WINSOCK_SELECT (0, &ws_readfds, &ws_writefds, &ws_exceptfds, &tv);
1120 select_printf ("WINSOCK_SELECT returned %d", r);
1123 select_printf ("error %d", WSAGetLastError ());
1127 if (WINSOCK_FD_ISSET (h, &ws_readfds) || (me->read_selected && me->read_ready))
1128 gotone = me->read_ready = TRUE;
1129 if (WINSOCK_FD_ISSET (h, &ws_writefds) || (me->write_selected && me->write_ready))
1130 gotone = me->write_ready = TRUE;
1131 if (WINSOCK_FD_ISSET (h, &ws_exceptfds) || (me->except_selected && me->except_ready))
1132 gotone = me->except_ready = TRUE;
1137 poll_socket (select_record *me, fd_set *readfds, fd_set *writefds,
1140 return peek_socket (me, 0) ?
1141 set_bits (me, readfds, writefds, exceptfds) :
1147 static int start_thread_socket (select_record *, select_stuff *);
1150 thread_socket (void *arg)
1152 socketinf *si = (socketinf *)arg;
1154 select_printf ("stuff_start %p", &si->start);
1155 int r = WINSOCK_SELECT (0, &si->readfds, &si->writefds, &si->exceptfds, NULL);
1156 select_printf ("Win32 select returned %d", r);
1158 select_printf ("error %d", WSAGetLastError ());
1159 select_record *s = si->start;
1160 while ((s = s->next))
1161 if (s->startup == start_thread_socket)
1163 HANDLE h = s->fh->get_handle ();
1164 select_printf ("s %p, testing fd %d (%s)", s, s->fd, s->fh->get_name ());
1165 if (WINSOCK_FD_ISSET (h, &si->readfds))
1167 select_printf ("read_ready");
1168 s->read_ready = TRUE;
1170 if (WINSOCK_FD_ISSET (h, &si->writefds))
1172 select_printf ("write_ready");
1173 s->write_ready = TRUE;
1175 if (WINSOCK_FD_ISSET (h, &si->exceptfds))
1177 select_printf ("except_ready");
1178 s->except_ready = TRUE;
1182 if (WINSOCK_FD_ISSET (si->exitsock, &si->readfds))
1183 select_printf ("saw exitsock read");
1188 extern "C" unsigned long htonl (unsigned long);
1191 start_thread_socket (select_record *me, select_stuff *stuff)
1195 if ((si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)]))
1202 WINSOCK_FD_ZERO (&si->readfds);
1203 WINSOCK_FD_ZERO (&si->writefds);
1204 WINSOCK_FD_ZERO (&si->exceptfds);
1205 select_record *s = &stuff->start;
1206 while ((s = s->next))
1207 if (s->startup == start_thread_socket)
1209 HANDLE h = s->fh->get_handle ();
1210 select_printf ("Handle %p", h);
1211 if (s->read_selected)
1213 WINSOCK_FD_SET (h, &si->readfds);
1214 select_printf ("Added to readfds");
1216 if (s->write_selected)
1218 WINSOCK_FD_SET (h, &si->writefds);
1219 select_printf ("Added to writefds");
1221 if (s->except_selected)
1223 WINSOCK_FD_SET (h, &si->exceptfds);
1224 select_printf ("Added to exceptfds");
1228 if ((si->exitsock = socket (PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
1230 set_winsock_errno ();
1231 select_printf ("cannot create socket, %E");
1234 /* Allow rapid reuse of the port. */
1236 (void) setsockopt (si->exitsock, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
1238 int sin_len = sizeof(si->sin);
1239 memset (&si->sin, 0, sizeof (si->sin));
1240 si->sin.sin_family = AF_INET;
1241 si->sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1242 if (bind (si->exitsock, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1244 select_printf ("cannot bind socket, %E");
1248 if (getsockname (si->exitsock, (struct sockaddr *) &si->sin, &sin_len) < 0)
1250 select_printf ("getsockname error");
1254 if (listen (si->exitsock, 1))
1256 select_printf ("listen failed, %E");
1260 select_printf ("exitsock %p", si->exitsock);
1261 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->readfds);
1262 WINSOCK_FD_SET ((HANDLE) si->exitsock, &si->exceptfds);
1263 stuff->device_specific[FHDEVN(FH_SOCKET)] = (void *) si;
1264 si->start = &stuff->start;
1265 select_printf ("stuff_start %p", &stuff->start);
1266 si->thread = me->h = makethread (thread_socket, (LPVOID)si, 0,
1271 set_winsock_errno ();
1272 closesocket (si->exitsock);
1277 socket_cleanup (select_record *, select_stuff *stuff)
1279 socketinf *si = (socketinf *)stuff->device_specific[FHDEVN(FH_SOCKET)];
1280 select_printf ("si %p si->thread %p", si, si ? si->thread : NULL);
1281 if (si && si->thread)
1283 select_printf ("connection to si->exitsock %p", si->exitsock);
1284 SOCKET s = socket (AF_INET, SOCK_STREAM, 0);
1285 /* Connecting to si->exitsock will cause any executing select to wake
1286 up. When this happens then the exitsock condition will cause the
1287 thread to terminate. */
1288 if (connect (s, (struct sockaddr *) &si->sin, sizeof (si->sin)) < 0)
1290 set_winsock_errno ();
1291 select_printf ("connect failed");
1292 /* FIXME: now what? */
1297 /* Wait for thread to go away */
1298 WaitForSingleObject (si->thread, INFINITE);
1299 shutdown (si->exitsock, 2);
1300 closesocket (si->exitsock);
1301 CloseHandle (si->thread);
1302 stuff->device_specific[FHDEVN(FH_SOCKET)] = NULL;
1305 select_printf ("returning");
1309 fhandler_socket::select_read (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->read_selected = TRUE;
1324 fhandler_socket::select_write (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->write_selected = TRUE;
1339 fhandler_socket::select_except (select_record *s)
1343 s = new select_record;
1344 s->startup = start_thread_socket;
1345 s->poll = poll_socket;
1346 s->verify = verify_true;
1347 s->cleanup = socket_cleanup;
1349 s->except_selected = TRUE;
1354 peek_windows (select_record *me, int)
1358 set_handle_or_return_if_not_open (h, me);
1360 if (me->read_selected && me->read_ready)
1363 if (PeekMessage (&m, (HWND) h, 0, 0, PM_NOREMOVE))
1365 me->read_ready = TRUE;
1366 select_printf ("window %d(%p) ready", me->fd, me->fh->get_handle ());
1370 select_printf ("window %d(%p) not ready", me->fd, me->fh->get_handle ());
1371 return me->write_ready;
1375 poll_windows (select_record *me, fd_set *readfds, fd_set *writefds,
1379 return peek_windows (me, 0) ?
1380 set_bits (me, readfds, writefds, exceptfds) :
1387 fhandler_windows::select_read (select_record *s)
1391 s = new select_record;
1392 s->startup = no_startup;
1393 s->poll = poll_windows;
1394 s->verify = poll_windows;
1396 s->h = get_handle ();
1397 s->read_selected = TRUE;
1398 s->h = get_handle ();
1399 s->windows_handle = TRUE;
1404 fhandler_windows::select_write (select_record *s)
1408 s = new select_record;
1409 s->startup = no_startup;
1411 s->verify = verify_ok;
1413 s->h = get_handle ();
1414 s->write_selected = TRUE;
1415 s->write_ready = TRUE;
1416 s->windows_handle = TRUE;
1421 fhandler_windows::select_except (select_record *s)
1425 s = new select_record;
1426 s->startup = no_startup;
1428 s->verify = verify_ok;
1430 s->h = get_handle ();
1431 s->except_selected = TRUE;
1432 s->except_ready = TRUE;
1433 s->windows_handle = TRUE;