From 0f285615efa16c783821cd87a1fdabe4913da9a7 Mon Sep 17 00:00:00 2001 From: cvs2svn <> Date: Mon, 22 Dec 2008 19:45:57 +0000 Subject: This commit was manufactured by cvs2svn to create branch 'newlib- 1_17_0-arc'. Sprout from master 2008-12-22 19:45:56 UTC Jeff Johnston '' Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson '19990502 sourceware import': README config/mt-d30v config/mt-netware config/mt-ospace etc/add-log.el etc/add-log.vi etc/configbuild.ein etc/configbuild.fig etc/configbuild.jin etc/configbuild.tin etc/configdev.ein etc/configdev.fig etc/configdev.jin etc/configdev.tin makefile.vms Delete: djunpack.bat include/COPYING include/COPYING3 include/ChangeLog include/ChangeLog-9103 include/MAINTAINERS include/alloca-conf.h include/ansidecl.h include/aout/ChangeLog include/aout/adobe.h include/aout/aout64.h include/aout/ar.h include/aout/dynix3.h include/aout/encap.h include/aout/host.h include/aout/hp.h include/aout/hp300hpux.h include/aout/hppa.h include/aout/ranlib.h include/aout/reloc.h include/aout/stab.def include/aout/stab_gnu.h include/aout/sun4.h include/bfdlink.h include/binary-io.h include/bout.h include/coff/ChangeLog include/coff/ChangeLog-9103 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winsup/w32api/lib/oleacc.def winsup/w32api/lib/oleaut32.def winsup/w32api/lib/olecli32.def winsup/w32api/lib/olectlid-uuid.c winsup/w32api/lib/oledlg.def winsup/w32api/lib/oleidl-uuid.c winsup/w32api/lib/olepro32.def winsup/w32api/lib/olesvr32.def winsup/w32api/lib/opengl32.def winsup/w32api/lib/penwin32.def winsup/w32api/lib/pkpd32.def winsup/w32api/lib/power-uuid.c winsup/w32api/lib/powrprof.def winsup/w32api/lib/psapi.def winsup/w32api/lib/quartz.def winsup/w32api/lib/rapi.def winsup/w32api/lib/rasapi32.def winsup/w32api/lib/rasdlg.def winsup/w32api/lib/res.rc winsup/w32api/lib/rpcdce4.def winsup/w32api/lib/rpcns4.def winsup/w32api/lib/rpcrt4.def winsup/w32api/lib/rtm.def winsup/w32api/lib/rtutils.def winsup/w32api/lib/scrnsave.c winsup/w32api/lib/secur32.def winsup/w32api/lib/servprov-uuid.c winsup/w32api/lib/setupapi.def winsup/w32api/lib/shell32.c winsup/w32api/lib/shell32.def winsup/w32api/lib/shfolder.def winsup/w32api/lib/shlwapi.def winsup/w32api/lib/snmpapi.def winsup/w32api/lib/svrapi.def winsup/w32api/lib/tapi32.def winsup/w32api/lib/test.c winsup/w32api/lib/th32.def winsup/w32api/lib/thunk32.def winsup/w32api/lib/unknwn-uuid.c winsup/w32api/lib/url.def winsup/w32api/lib/urlmon-uuid.c winsup/w32api/lib/user32.def winsup/w32api/lib/userenv.def winsup/w32api/lib/usp10.def winsup/w32api/lib/uxtheme.def winsup/w32api/lib/vdmdbg.def winsup/w32api/lib/version.def winsup/w32api/lib/vfw32.mri winsup/w32api/lib/win32spl.def winsup/w32api/lib/wininet.def winsup/w32api/lib/winmm.def winsup/w32api/lib/winspool.def winsup/w32api/lib/winstrm.def winsup/w32api/lib/wldap32.def winsup/w32api/lib/wow32.def winsup/w32api/lib/ws2_32.c winsup/w32api/lib/ws2_32.def winsup/w32api/lib/wsnmp32.def winsup/w32api/lib/wsock32.def winsup/w32api/lib/wst.def winsup/w32api/lib/wtsapi32.def --- winsup/cygwin/select.cc | 1606 ----------------------------------------------- 1 file changed, 1606 deletions(-) delete mode 100644 winsup/cygwin/select.cc (limited to 'winsup/cygwin/select.cc') diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc deleted file mode 100644 index eceeeafcb..000000000 --- a/winsup/cygwin/select.cc +++ /dev/null @@ -1,1606 +0,0 @@ -/* select.cc - - Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, - 2005, 2006, 2007, 2008 Red Hat, Inc. - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -/* The following line means that the BSD socket definitions for - fd_set, FD_ISSET etc. are used in this file. */ - -#define __INSIDE_CYGWIN_NET__ - -#include "winsup.h" -#include -#include "ntdll.h" - -#include -#include -#include -#define USE_SYS_TYPES_FD_SET -#include -#include "cygerrno.h" -#include "security.h" -#include "path.h" -#include "fhandler.h" -#include "dtable.h" -#include "cygheap.h" -#include "pinfo.h" -#include "sigproc.h" -#include "cygtls.h" - -/* - * All these defines below should be in sys/types.h - * but because of the includes above, they may not have - * been included. We create special UNIX_xxxx versions here. - */ - -#ifndef NBBY -#define NBBY 8 /* number of bits in a byte */ -#endif /* NBBY */ - -/* - * Select uses bit masks of file descriptors in longs. - * These macros manipulate such bit fields (the filesystem macros use chars). - * FD_SETSIZE may be defined by the user, but the default here - * should be >= NOFILE (param.h). - */ - -typedef long fd_mask; -#define UNIX_NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */ -#ifndef unix_howmany -#define unix_howmany(x,y) (((x)+((y)-1))/(y)) -#endif - -#define unix_fd_set fd_set - -#define NULL_fd_set ((fd_set *) NULL) -#define sizeof_fd_set(n) \ - ((unsigned) (NULL_fd_set->fds_bits + unix_howmany ((n), UNIX_NFDBITS))) -#define UNIX_FD_SET(n, p) \ - ((p)->fds_bits[(n)/UNIX_NFDBITS] |= (1L << ((n) % UNIX_NFDBITS))) -#define UNIX_FD_CLR(n, p) \ - ((p)->fds_bits[(n)/UNIX_NFDBITS] &= ~(1L << ((n) % UNIX_NFDBITS))) -#define UNIX_FD_ISSET(n, p) \ - ((p)->fds_bits[(n)/UNIX_NFDBITS] & (1L << ((n) % UNIX_NFDBITS))) -#define UNIX_FD_ZERO(p, n) \ - bzero ((caddr_t)(p), sizeof_fd_set ((n))) - -#define allocfd_set(n) ((fd_set *) memset (alloca (sizeof_fd_set (n)), 0, sizeof_fd_set (n))) -#define copyfd_set(to, from, n) memcpy (to, from, sizeof_fd_set (n)); - -#define set_handle_or_return_if_not_open(h, s) \ - h = (s)->fh->get_handle (); \ - if (cygheap->fdtab.not_open ((s)->fd)) \ - { \ - (s)->thread_errno = EBADF; \ - return -1; \ - } \ - -/* The main select code. - */ -extern "C" int -cygwin_select (int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - struct timeval *to) -{ - select_stuff sel; - fd_set *dummy_readfds = allocfd_set (maxfds); - fd_set *dummy_writefds = allocfd_set (maxfds); - fd_set *dummy_exceptfds = allocfd_set (maxfds); - - select_printf ("%d, %p, %p, %p, %p", maxfds, readfds, writefds, exceptfds, to); - - if (!readfds) - readfds = dummy_readfds; - if (!writefds) - writefds = dummy_writefds; - if (!exceptfds) - exceptfds = dummy_exceptfds; - - for (int i = 0; i < maxfds; i++) - if (!sel.test_and_set (i, readfds, writefds, exceptfds)) - { - select_printf ("aborting due to test_and_set error"); - return -1; /* Invalid fd, maybe? */ - } - - /* Convert to milliseconds or INFINITE if to == NULL */ - DWORD ms = to ? (to->tv_sec * 1000) + (to->tv_usec / 1000) : INFINITE; - if (ms == 0 && to->tv_usec) - ms = 1; /* At least 1 ms granularity */ - - if (to) - select_printf ("to->tv_sec %d, to->tv_usec %d, ms %d", to->tv_sec, to->tv_usec, ms); - else - select_printf ("to NULL, ms %x", ms); - - select_printf ("sel.always_ready %d", sel.always_ready); - - int timeout = 0; - /* Allocate some fd_set structures using the number of fds as a guide. */ - fd_set *r = allocfd_set (maxfds); - fd_set *w = allocfd_set (maxfds); - fd_set *e = allocfd_set (maxfds); - - /* Degenerate case. No fds to wait for. Just wait. */ - if (sel.start.next == NULL) - { - if (WaitForSingleObject (signal_arrived, ms) == WAIT_OBJECT_0) - { - select_printf ("signal received"); - set_sig_errno (EINTR); - return -1; - } - timeout = 1; - } - else if (sel.always_ready || ms == 0) - /* Don't bother waiting. */; - else if ((timeout = sel.wait (r, w, e, ms) < 0)) - return -1; /* some kind of error */ - - sel.cleanup (); - copyfd_set (readfds, r, maxfds); - copyfd_set (writefds, w, maxfds); - copyfd_set (exceptfds, e, maxfds); - return timeout ? 0 : sel.poll (readfds, writefds, exceptfds); -} - -extern "C" int -pselect(int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - const struct timespec *ts, const sigset_t *set) -{ - struct timeval tv; - sigset_t oldset = _my_tls.sigmask; - - myfault efault; - if (efault.faulted (EFAULT)) - return -1; - if (ts) - { - tv.tv_sec = ts->tv_sec; - tv.tv_usec = ts->tv_nsec / 1000; - } - if (set) - set_signal_mask (*set, _my_tls.sigmask); - int ret = cygwin_select (maxfds, readfds, writefds, exceptfds, - ts ? &tv : NULL); - if (set) - set_signal_mask (oldset, _my_tls.sigmask); - return ret; -} - -/* Call cleanup functions for all inspected fds. Gets rid of any - executing threads. */ -void -select_stuff::cleanup () -{ - select_record *s = &start; - - select_printf ("calling cleanup routines"); - while ((s = s->next)) - if (s->cleanup) - { - s->cleanup (s, this); - s->cleanup = NULL; - } -} - -/* Destroy all storage associated with select stuff. */ -select_stuff::~select_stuff () -{ - cleanup (); - select_record *s = &start; - select_record *snext = start.next; - - select_printf ("deleting select records"); - while ((s = snext)) - { - snext = s->next; - delete s; - } -} - -/* Add a record to the select chain */ -int -select_stuff::test_and_set (int i, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - select_record *s = NULL; - if (UNIX_FD_ISSET (i, readfds) && (s = cygheap->fdtab.select_read (i, s)) == NULL) - return 0; /* error */ - if (UNIX_FD_ISSET (i, writefds) && (s = cygheap->fdtab.select_write (i, s)) == NULL) - return 0; /* error */ - if (UNIX_FD_ISSET (i, exceptfds) && (s = cygheap->fdtab.select_except (i, s)) == NULL) - return 0; /* error */ - if (s == NULL) - return 1; /* nothing to do */ - - if (s->read_ready || s->write_ready || s->except_ready) - always_ready = true; - - if (s->windows_handle) - windows_used = true; - - s->next = start.next; - start.next = s; - return 1; -} - -/* The heart of select. Waits for an fd to do something interesting. */ -int -select_stuff::wait (fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - DWORD ms) -{ - int wait_ret; - HANDLE w4[MAXIMUM_WAIT_OBJECTS]; - select_record *s = &start; - int m = 0; - int res = 0; - - w4[m++] = signal_arrived; /* Always wait for the arrival of a signal. */ - /* Loop through the select chain, starting up anything appropriate and - counting the number of active fds. */ - while ((s = s->next)) - { - if (m >= MAXIMUM_WAIT_OBJECTS) - { - set_sig_errno (EINVAL); - return -1; - } - if (!s->startup (s, this)) - { - s->set_select_errno (); - return -1; - } - if (s->h == NULL) - continue; - for (int i = 1; i < m; i++) - if (w4[i] == s->h) - goto next_while; - w4[m++] = s->h; - next_while: - continue; - } - - LONGLONG start_time = gtod.msecs (); /* Record the current time for later use. */ - - debug_printf ("m %d, ms %u", m, ms); - for (;;) - { - if (!windows_used) - wait_ret = WaitForMultipleObjects (m, w4, FALSE, ms); - else - wait_ret = MsgWaitForMultipleObjects (m, w4, FALSE, ms, QS_ALLINPUT); - - switch (wait_ret) - { - case WAIT_OBJECT_0: - select_printf ("signal received"); - set_sig_errno (EINTR); - return -1; - case WAIT_FAILED: - select_printf ("WaitForMultipleObjects failed"); - s->set_select_errno (); - return -1; - case WAIT_TIMEOUT: - select_printf ("timed out"); - res = 1; - goto out; - } - - select_printf ("woke up. wait_ret %d. verifying", wait_ret); - s = &start; - bool gotone = false; - /* Some types of objects (e.g., consoles) wake up on "inappropriate" events - like mouse movements. The verify function will detect these situations. - If it returns false, then this wakeup was a false alarm and we should go - back to waiting. */ - while ((s = s->next)) - if (s->saw_error ()) - { - set_errno (s->saw_error ()); - return -1; /* Somebody detected an error */ - } - else if ((((wait_ret >= m && s->windows_handle) || s->h == w4[wait_ret])) && - s->verify (s, readfds, writefds, exceptfds)) - gotone = true; - - select_printf ("gotone %d", gotone); - if (gotone) - goto out; - - if (ms == INFINITE) - { - select_printf ("looping"); - continue; - } - select_printf ("recalculating ms"); - - LONGLONG now = gtod.msecs (); - if (now > (start_time + ms)) - { - select_printf ("timed out after verification"); - goto out; - } - ms -= (now - start_time); - start_time = now; - select_printf ("ms now %u", ms); - } - -out: - select_printf ("returning %d", res); - return res; -} - -static int -set_bits (select_record *me, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - int ready = 0; - fhandler_socket *sock; - select_printf ("me %p, testing fd %d (%s)", me, me->fd, me->fh->get_name ()); - if (me->read_selected && me->read_ready) - { - UNIX_FD_SET (me->fd, readfds); - ready++; - } - if (me->write_selected && me->write_ready) - { - UNIX_FD_SET (me->fd, writefds); - if (me->except_on_write && (sock = me->fh->is_socket ())) - { - /* Special AF_LOCAL handling. */ - if (!me->read_ready && sock->connect_state () == connect_pending - && sock->af_local_connect ()) - { - if (me->read_selected) - UNIX_FD_SET (me->fd, readfds); - sock->connect_state (connect_failed); - } - else - sock->connect_state (connected); - } - ready++; - } - if (me->except_selected && me->except_ready) - { - UNIX_FD_SET (me->fd, exceptfds); - ready++; - } - select_printf ("ready %d", ready); - return ready; -} - -/* Poll every fd in the select chain. Set appropriate fd in mask. */ -int -select_stuff::poll (fd_set *readfds, fd_set *writefds, fd_set *exceptfds) -{ - int n = 0; - select_record *s = &start; - while ((s = s->next)) - n += (!s->peek || s->peek (s, true)) ? - set_bits (s, readfds, writefds, exceptfds) : 0; - select_printf ("returning %d", n); - return n; -} - -static int -verify_true (select_record *, fd_set *, fd_set *, fd_set *) -{ - return 1; -} - -static int -verify_ok (select_record *me, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - return set_bits (me, readfds, writefds, exceptfds); -} - -static int -no_startup (select_record *, select_stuff *) -{ - return 1; -} - -static int -no_verify (select_record *, fd_set *, fd_set *, fd_set *) -{ - return 0; -} - -static int -peek_pipe (select_record *s, bool from_select) -{ - int n = 0; - int gotone = 0; - fhandler_base *fh = s->fh; - - HANDLE h; - set_handle_or_return_if_not_open (h, s); - - /* Don't perform complicated tests if we don't need to. */ - if (!s->read_selected && !s->except_selected) - goto out; - - if (s->read_selected) - { - if (s->read_ready) - { - select_printf ("%s, already ready for read", fh->get_name ()); - gotone = 1; - goto out; - } - - switch (fh->get_major ()) - { - case DEV_TTYM_MAJOR: - if (((fhandler_pty_master *) fh)->need_nl) - { - gotone = s->read_ready = true; - goto out; - } - break; - default: - if (fh->get_readahead_valid ()) - { - select_printf ("readahead"); - gotone = s->read_ready = true; - goto out; - } - } - - if (fh->bg_check (SIGTTIN) <= bg_eof) - { - gotone = s->read_ready = true; - goto out; - } - } - - if (fh->get_device () == FH_PIPEW) - select_printf ("%s, select for read/except on write end of pipe", - fh->get_name ()); - else if (!PeekNamedPipe (h, NULL, 0, NULL, (DWORD *) &n, NULL)) - { - select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ()); - n = -1; - } - - if (n < 0) - { - select_printf ("%s, n %d", fh->get_name (), n); - if (s->except_selected) - gotone += s->except_ready = true; - if (s->read_selected) - gotone += s->read_ready = true; - } - if (n > 0 && s->read_selected) - { - select_printf ("%s, ready for read: avail %d", fh->get_name (), n); - gotone += s->read_ready = true; - } - if (!gotone && s->fh->hit_eof ()) - { - select_printf ("%s, saw EOF", fh->get_name ()); - if (s->except_selected) - gotone += s->except_ready = true; - if (s->read_selected) - gotone += s->read_ready = true; - } - -out: - if (s->write_selected) - { - if (s->write_ready) - { - select_printf ("%s, already ready for write", fh->get_name ()); - gotone++; - } - /* Do we need to do anything about SIGTTOU here? */ - else if (fh->get_device () == FH_PIPER) - select_printf ("%s, select for write on read end of pipe", - fh->get_name ()); - else - { -#if 0 -/* FIXME: This code is not quite correct. There's no better solution - so far but to make simple assumptions based on WriteQuotaAvailable. */ - - IO_STATUS_BLOCK iosb = {0}; - FILE_PIPE_LOCAL_INFORMATION fpli = {0}; - - if (NtQueryInformationFile (h, - &iosb, - &fpli, - sizeof (fpli), - FilePipeLocalInformation)) - { - /* If NtQueryInformationFile fails, optimistically assume the - pipe is writable. This could happen if we somehow - inherit a pipe that doesn't permit FILE_READ_ATTRIBUTES - access on the write end. */ - select_printf ("%s, NtQueryInformationFile failed", - fh->get_name ()); - gotone += s->write_ready = true; - } - /* If there is anything available in the pipe buffer then signal - that. This means that a pipe could still block since you could - be trying to write more to the pipe than is available in the - buffer but that is the hazard of select(). */ - else if ((fpli.WriteQuotaAvailable = (fpli.OutboundQuota - fpli.ReadDataAvailable))) - { - select_printf ("%s, ready for write: size %lu, avail %lu", - fh->get_name (), - fpli.OutboundQuota, - fpli.WriteQuotaAvailable); - gotone += s->write_ready = true; - } - /* If we somehow inherit a tiny pipe (size < PIPE_BUF), then consider - the pipe writable only if it is completely empty, to minimize the - probability that a subsequent write will block. */ - else if (fpli.OutboundQuota < PIPE_BUF && - fpli.WriteQuotaAvailable == fpli.OutboundQuota) - { - select_printf ("%s, tiny pipe: size %lu, avail %lu", - fh->get_name (), - fpli.OutboundQuota, - fpli.WriteQuotaAvailable); - gotone += s->write_ready = true; - } -#else - gotone += s->write_ready = true; -#endif - } - } - - return gotone; -} - -static int start_thread_pipe (select_record *me, select_stuff *stuff); - -struct pipeinf - { - cygthread *thread; - bool stop_thread_pipe; - select_record *start; - }; - -static DWORD WINAPI -thread_pipe (void *arg) -{ - pipeinf *pi = (pipeinf *) arg; - bool gotone = false; - DWORD sleep_time = 0; - - for (;;) - { - select_record *s = pi->start; - while ((s = s->next)) - if (s->startup == start_thread_pipe) - { - if (peek_pipe (s, true)) - gotone = true; - if (pi->stop_thread_pipe) - { - select_printf ("stopping"); - goto out; - } - } - /* Paranoid check */ - if (pi->stop_thread_pipe) - { - select_printf ("stopping from outer loop"); - break; - } - if (gotone) - break; - Sleep (sleep_time >> 3); - if (sleep_time < 80) - ++sleep_time; - } -out: - return 0; -} - -static int -start_thread_pipe (select_record *me, select_stuff *stuff) -{ - if (stuff->device_specific_pipe) - { - me->h = *((pipeinf *) stuff->device_specific_pipe)->thread; - return 1; - } - pipeinf *pi = new pipeinf; - pi->start = &stuff->start; - pi->stop_thread_pipe = false; - pi->thread = new cygthread (thread_pipe, 0, pi, "select_pipe"); - me->h = *pi->thread; - if (!me->h) - return 0; - stuff->device_specific_pipe = (void *) pi; - return 1; -} - -static void -pipe_cleanup (select_record *, select_stuff *stuff) -{ - pipeinf *pi = (pipeinf *) stuff->device_specific_pipe; - if (pi && pi->thread) - { - pi->stop_thread_pipe = true; - pi->thread->detach (); - delete pi; - stuff->device_specific_pipe = NULL; - } -} - -int -fhandler_pipe::ready_for_read (int fd, DWORD howlong) -{ - int res; - if (!howlong) - res = fhandler_base::ready_for_read (fd, howlong); - else - res = 1; - return res; -} - -select_record * -fhandler_pipe::select_read (select_record *s) -{ - if (!s) - s = new select_record; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_pipe::select_write (select_record *s) -{ - if (!s) - s = new select_record; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->write_selected = true; - s->write_ready = false; - return s; -} - -select_record * -fhandler_pipe::select_except (select_record *s) -{ - if (!s) - s = new select_record; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->except_selected = true; - s->except_ready = false; - return s; -} - -static int -peek_console (select_record *me, bool) -{ - extern const char * get_nonascii_key (INPUT_RECORD& input_rec, char *); - fhandler_console *fh = (fhandler_console *) me->fh; - - if (!me->read_selected) - return me->write_ready; - - if (fh->get_readahead_valid ()) - { - select_printf ("readahead"); - return me->read_ready = true; - } - - if (me->read_ready) - { - select_printf ("already ready"); - return 1; - } - - INPUT_RECORD irec; - DWORD events_read; - HANDLE h; - char tmpbuf[17]; - set_handle_or_return_if_not_open (h, me); - - for (;;) - if (fh->bg_check (SIGTTIN) <= bg_eof) - return me->read_ready = true; - else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read) - break; - else - { - if (irec.EventType == KEY_EVENT) - { - if (irec.Event.KeyEvent.bKeyDown - && (irec.Event.KeyEvent.uChar.AsciiChar - || get_nonascii_key (irec, tmpbuf))) - return me->read_ready = true; - } - else - { - fh->send_winch_maybe (); - if (irec.EventType == MOUSE_EVENT - && fh->mouse_aware () - && (irec.Event.MouseEvent.dwEventFlags == 0 - || irec.Event.MouseEvent.dwEventFlags == DOUBLE_CLICK)) - return me->read_ready = true; - } - - /* Read and discard the event */ - ReadConsoleInput (h, &irec, 1, &events_read); - } - - return me->write_ready; -} - -static int -verify_console (select_record *me, fd_set *rfds, fd_set *wfds, - fd_set *efds) -{ - return peek_console (me, true); -} - - -select_record * -fhandler_console::select_read (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_console; - set_cursor_maybe (); - } - - s->peek = peek_console; - s->h = get_handle (); - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_console::select_write (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = no_verify; - set_cursor_maybe (); - } - - s->peek = peek_console; - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_console::select_except (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = no_verify; - set_cursor_maybe (); - } - - s->peek = peek_console; - s->except_selected = true; - s->except_ready = false; - return s; -} - -select_record * -fhandler_tty_common::select_read (select_record *s) -{ - return ((fhandler_pipe *) this)->fhandler_pipe::select_read (s); -} - -select_record * -fhandler_tty_common::select_write (select_record *s) -{ - return ((fhandler_pipe *) this)->fhandler_pipe::select_write (s); -} - -select_record * -fhandler_tty_common::select_except (select_record *s) -{ - return ((fhandler_pipe *) this)->fhandler_pipe::select_except (s); -} - -static int -verify_tty_slave (select_record *me, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - if (WaitForSingleObject (me->h, 0) == WAIT_OBJECT_0) - me->read_ready = true; - return set_bits (me, readfds, writefds, exceptfds); -} - -select_record * -fhandler_tty_slave::select_read (select_record *s) -{ - if (!s) - s = new select_record; - s->h = input_available_event; - s->startup = no_startup; - s->peek = peek_pipe; - s->verify = verify_tty_slave; - s->read_selected = true; - s->read_ready = false; - s->cleanup = NULL; - return s; -} - -select_record * -fhandler_dev_null::select_read (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = no_verify; - } - s->h = get_handle (); - s->read_selected = true; - s->read_ready = true; - return s; -} - -select_record * -fhandler_dev_null::select_write (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = no_verify; - } - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_dev_null::select_except (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = no_verify; - } - s->h = get_handle (); - s->except_selected = true; - s->except_ready = false; - return s; -} - -static int start_thread_serial (select_record *me, select_stuff *stuff); - -struct serialinf - { - cygthread *thread; - bool stop_thread_serial; - select_record *start; - }; - -static int -peek_serial (select_record *s, bool) -{ - COMSTAT st; - - fhandler_serial *fh = (fhandler_serial *) s->fh; - - if (fh->get_readahead_valid () || fh->overlapped_armed < 0) - return s->read_ready = true; - - select_printf ("fh->overlapped_armed %d", fh->overlapped_armed); - - HANDLE h; - set_handle_or_return_if_not_open (h, s); - int ready = 0; - - if ((s->read_selected && s->read_ready) || (s->write_selected && s->write_ready)) - { - select_printf ("already ready"); - ready = 1; - goto out; - } - - SetCommMask (h, EV_RXCHAR); - - if (!fh->overlapped_armed) - { - COMSTAT st; - - ResetEvent (fh->io_status.hEvent); - - if (!ClearCommError (h, &fh->ev, &st)) - { - debug_printf ("ClearCommError"); - goto err; - } - else if (st.cbInQue) - return s->read_ready = true; - else if (WaitCommEvent (h, &fh->ev, &fh->io_status)) - return s->read_ready = true; - else if (GetLastError () == ERROR_IO_PENDING) - fh->overlapped_armed = 1; - else - { - debug_printf ("WaitCommEvent"); - goto err; - } - } - - HANDLE w4[2]; - DWORD to; - - w4[0] = fh->io_status.hEvent; - w4[1] = signal_arrived; - to = 10; - - switch (WaitForMultipleObjects (2, w4, FALSE, to)) - { - case WAIT_OBJECT_0: - if (!ClearCommError (h, &fh->ev, &st)) - { - debug_printf ("ClearCommError"); - goto err; - } - else if (!st.cbInQue) - Sleep (to); - else - { - return s->read_ready = true; - select_printf ("got something"); - } - break; - case WAIT_OBJECT_0 + 1: - select_printf ("interrupt"); - set_sig_errno (EINTR); - ready = -1; - break; - case WAIT_TIMEOUT: - break; - default: - debug_printf ("WaitForMultipleObjects"); - goto err; - } - -out: - return ready; - -err: - if (GetLastError () == ERROR_OPERATION_ABORTED) - { - select_printf ("operation aborted"); - return ready; - } - - s->set_select_errno (); - select_printf ("error %E"); - return -1; -} - -static DWORD WINAPI -thread_serial (void *arg) -{ - serialinf *si = (serialinf *) arg; - bool gotone = false; - - for (;;) - { - select_record *s = si->start; - while ((s = s->next)) - if (s->startup == start_thread_serial) - { - if (peek_serial (s, true)) - gotone = true; - } - if (si->stop_thread_serial) - { - select_printf ("stopping"); - break; - } - if (gotone) - break; - } - - select_printf ("exiting"); - return 0; -} - -static int -start_thread_serial (select_record *me, select_stuff *stuff) -{ - if (stuff->device_specific_serial) - { - me->h = *((serialinf *) stuff->device_specific_serial)->thread; - return 1; - } - serialinf *si = new serialinf; - si->start = &stuff->start; - si->stop_thread_serial = false; - si->thread = new cygthread (thread_serial, 0, si, "select_serial"); - me->h = *si->thread; - stuff->device_specific_serial = (void *) si; - return 1; -} - -static void -serial_cleanup (select_record *, select_stuff *stuff) -{ - serialinf *si = (serialinf *) stuff->device_specific_serial; - if (si && si->thread) - { - si->stop_thread_serial = true; - si->thread->detach (); - delete si; - stuff->device_specific_serial = NULL; - } -} - -select_record * -fhandler_serial::select_read (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = start_thread_serial; - s->verify = verify_ok; - s->cleanup = serial_cleanup; - } - s->peek = peek_serial; - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_serial::select_write (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_ok; - } - s->peek = peek_serial; - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_serial::select_except (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = NULL; - s->peek = peek_serial; - s->except_selected = false; // Can't do this - s->except_ready = false; - return s; -} - -int -fhandler_base::ready_for_read (int fd, DWORD howlong) -{ - bool avail = false; - select_record me (this); - me.fd = fd; - while (!avail) - { - select_read (&me); - avail = me.read_ready ?: me.peek (&me, false); - - if (fd >= 0 && cygheap->fdtab.not_open (fd)) - { - set_sig_errno (EBADF); - avail = false; - break; - } - - if (howlong != INFINITE) - { - if (!avail) - set_sig_errno (EAGAIN); - break; - } - - if (WaitForSingleObject (signal_arrived, avail ? 0 : 10) == WAIT_OBJECT_0) - { - debug_printf ("interrupted"); - set_sig_errno (EINTR); - avail = false; - break; - } - } - - select_printf ("read_ready %d, avail %d", me.read_ready, avail); - return avail; -} - -select_record * -fhandler_base::select_read (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = get_handle (); - s->read_selected = true; - s->read_ready = true; - return s; -} - -select_record * -fhandler_base::select_write (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_base::select_except (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = NULL; - s->except_selected = true; - s->except_ready = false; - return s; -} - -static int -peek_socket (select_record *me, bool) -{ - fhandler_socket *fh = (fhandler_socket *) me->fh; - long events; - /* Don't play with the settings again, unless having taken a deep look into - Richard W. Stevens Network Programming book. Thank you. */ - long evt_mask = (me->read_selected ? (FD_READ | FD_ACCEPT | FD_CLOSE) : 0) - | (me->write_selected ? (FD_WRITE | FD_CONNECT | FD_CLOSE) : 0) - | (me->except_selected ? FD_OOB : 0); - int ret = fh->evaluate_events (evt_mask, events, false); - if (me->read_selected) - me->read_ready |= ret || !!(events & (FD_READ | FD_ACCEPT | FD_CLOSE)); - if (me->write_selected) - me->write_ready |= ret || !!(events & (FD_WRITE | FD_CONNECT | FD_CLOSE)); - if (me->except_selected) - me->except_ready |= !!(events & FD_OOB); - - select_printf ("read_ready: %d, write_ready: %d, except_ready: %d", - me->read_ready, me->write_ready, me->except_ready); - return me->read_ready || me->write_ready || me->except_ready; -} - -static int start_thread_socket (select_record *, select_stuff *); - -struct socketinf - { - cygthread *thread; - int max_w4; - int num_w4; - LONG *ser_num; - HANDLE *w4; - select_record *start; - }; - -static DWORD WINAPI -thread_socket (void *arg) -{ - socketinf *si = (socketinf *) arg; - DWORD timeout = 64 / (si->max_w4 / MAXIMUM_WAIT_OBJECTS); - bool event = false; - - select_printf ("stuff_start %p", si->start); - while (!event) - { - for (select_record *s = si->start; (s = s->next); ) - if (s->startup == start_thread_socket) - if (peek_socket (s, false)) - event = true; - if (!event) - for (int i = 0; i < si->max_w4; i += MAXIMUM_WAIT_OBJECTS) - switch (WaitForMultipleObjects (min (si->num_w4 - i, - MAXIMUM_WAIT_OBJECTS), - si->w4 + i, FALSE, timeout)) - { - case WAIT_FAILED: - goto out; - case WAIT_OBJECT_0: - if (!i) /* Socket event set. */ - goto out; - break; - case WAIT_TIMEOUT: - default: - break; - } - } -out: - select_printf ("leaving thread_socket"); - return 0; -} - -static int -start_thread_socket (select_record *me, select_stuff *stuff) -{ - socketinf *si; - - if ((si = (socketinf *) stuff->device_specific_socket)) - { - me->h = *si->thread; - return 1; - } - - si = new socketinf; - si->ser_num = (LONG *) malloc (MAXIMUM_WAIT_OBJECTS * sizeof (LONG)); - si->w4 = (HANDLE *) malloc (MAXIMUM_WAIT_OBJECTS * sizeof (HANDLE)); - if (!si->ser_num || !si->w4) - return 0; - si->max_w4 = MAXIMUM_WAIT_OBJECTS; - select_record *s = &stuff->start; - if (_my_tls.locals.select_sockevt != INVALID_HANDLE_VALUE) - si->w4[0] = _my_tls.locals.select_sockevt; - else if (!(si->w4[0] = CreateEvent (&sec_none_nih, TRUE, FALSE, NULL))) - return 1; - else - _my_tls.locals.select_sockevt = si->w4[0]; - si->num_w4 = 1; - while ((s = s->next)) - if (s->startup == start_thread_socket) - { - /* No event/socket should show up multiple times. Every socket - is uniquely identified by its serial number in the global - wsock_events record. */ - const LONG ser_num = ((fhandler_socket *) s->fh)->serial_number (); - for (int i = 1; i < si->num_w4; ++i) - if (si->ser_num[i] == ser_num) - goto continue_outer_loop; - if (si->num_w4 >= si->max_w4) - { - LONG *nser = (LONG *) realloc (si->ser_num, - (si->max_w4 + MAXIMUM_WAIT_OBJECTS) - * sizeof (LONG)); - if (!nser) - return 0; - si->ser_num = nser; - HANDLE *nw4 = (HANDLE *) realloc (si->w4, - (si->max_w4 + MAXIMUM_WAIT_OBJECTS) - * sizeof (HANDLE)); - if (!nw4) - return 0; - si->w4 = nw4; - si->max_w4 += MAXIMUM_WAIT_OBJECTS; - } - si->ser_num[si->num_w4] = ser_num; - si->w4[si->num_w4++] = ((fhandler_socket *) s->fh)->wsock_event (); - continue_outer_loop: - ; - } - stuff->device_specific_socket = (void *) si; - si->start = &stuff->start; - select_printf ("stuff_start %p", &stuff->start); - si->thread = new cygthread (thread_socket, 0, si, "select_socket"); - me->h = *si->thread; - return 1; -} - -void -socket_cleanup (select_record *, select_stuff *stuff) -{ - socketinf *si = (socketinf *) stuff->device_specific_socket; - select_printf ("si %p si->thread %p", si, si ? si->thread : NULL); - if (si && si->thread) - { - SetEvent (si->w4[0]); - /* Wait for thread to go away */ - si->thread->detach (); - ResetEvent (si->w4[0]); - stuff->device_specific_socket = NULL; - if (si->ser_num) - free (si->ser_num); - if (si->w4) - free (si->w4); - delete si; - } - select_printf ("returning"); -} - -select_record * -fhandler_socket::select_read (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = start_thread_socket; - s->verify = verify_true; - s->cleanup = socket_cleanup; - } - s->peek = peek_socket; - s->read_ready = saw_shutdown_read (); - s->read_selected = true; - return s; -} - -select_record * -fhandler_socket::select_write (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = start_thread_socket; - s->verify = verify_true; - s->cleanup = socket_cleanup; - } - s->peek = peek_socket; - s->write_ready = saw_shutdown_write () || connect_state () == unconnected; - s->write_selected = true; - if (connect_state () != unconnected) - { - s->except_ready = saw_shutdown_write () || saw_shutdown_read (); - s->except_on_write = true; - } - return s; -} - -select_record * -fhandler_socket::select_except (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = start_thread_socket; - s->verify = verify_true; - s->cleanup = socket_cleanup; - } - s->peek = peek_socket; - /* FIXME: Is this right? Should these be used as criteria for except? */ - s->except_ready = saw_shutdown_write () || saw_shutdown_read (); - s->except_selected = true; - return s; -} - -static int -peek_windows (select_record *me, bool) -{ - MSG m; - HANDLE h; - set_handle_or_return_if_not_open (h, me); - - if (me->read_selected && me->read_ready) - return 1; - - if (PeekMessage (&m, (HWND) h, 0, 0, PM_NOREMOVE)) - { - me->read_ready = true; - select_printf ("window %d(%p) ready", me->fd, me->fh->get_handle ()); - return 1; - } - - select_printf ("window %d(%p) not ready", me->fd, me->fh->get_handle ()); - return me->write_ready; -} - -static int -verify_windows (select_record *me, fd_set *rfds, fd_set *wfds, - fd_set *efds) -{ - return peek_windows (me, true); -} - -select_record * -fhandler_windows::select_read (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - } - s->verify = verify_windows; - s->peek = peek_windows; - s->read_selected = true; - s->read_ready = false; - s->h = get_handle (); - s->windows_handle = true; - return s; -} - -select_record * -fhandler_windows::select_write (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_ok; - } - s->peek = peek_windows; - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - s->windows_handle = true; - return s; -} - -select_record * -fhandler_windows::select_except (select_record *s) -{ - if (!s) - { - s = new select_record; - s->startup = no_startup; - s->verify = verify_ok; - } - s->peek = peek_windows; - s->h = get_handle (); - s->except_selected = true; - s->except_ready = false; - s->windows_handle = true; - return s; -} - -static int -peek_mailslot (select_record *me, bool) -{ - HANDLE h; - set_handle_or_return_if_not_open (h, me); - - if (me->read_selected && me->read_ready) - return 1; - DWORD msgcnt = 0; - if (!GetMailslotInfo (h, NULL, NULL, &msgcnt, NULL)) - { - select_printf ("mailslot %d(%p) error %E", me->fd, h); - return 1; - } - if (msgcnt > 0) - { - me->read_ready = true; - select_printf ("mailslot %d(%p) ready", me->fd, h); - return 1; - } - select_printf ("mailslot %d(%p) not ready", me->fd, h); - return 0; -} - -static int -verify_mailslot (select_record *me, fd_set *rfds, fd_set *wfds, - fd_set *efds) -{ - return peek_mailslot (me, true); -} - -static int start_thread_mailslot (select_record *me, select_stuff *stuff); - -struct mailslotinf - { - cygthread *thread; - bool stop_thread_mailslot; - select_record *start; - }; - -static DWORD WINAPI -thread_mailslot (void *arg) -{ - mailslotinf *mi = (mailslotinf *) arg; - bool gotone = false; - DWORD sleep_time = 0; - - for (;;) - { - select_record *s = mi->start; - while ((s = s->next)) - if (s->startup == start_thread_mailslot) - { - if (peek_mailslot (s, true)) - gotone = true; - if (mi->stop_thread_mailslot) - { - select_printf ("stopping"); - goto out; - } - } - /* Paranoid check */ - if (mi->stop_thread_mailslot) - { - select_printf ("stopping from outer loop"); - break; - } - if (gotone) - break; - Sleep (sleep_time >> 3); - if (sleep_time < 80) - ++sleep_time; - } -out: - return 0; -} - -static int -start_thread_mailslot (select_record *me, select_stuff *stuff) -{ - if (stuff->device_specific_mailslot) - { - me->h = *((mailslotinf *) stuff->device_specific_mailslot)->thread; - return 1; - } - mailslotinf *mi = new mailslotinf; - mi->start = &stuff->start; - mi->stop_thread_mailslot = false; - mi->thread = new cygthread (thread_mailslot, 0, mi, "select_mailslot"); - me->h = *mi->thread; - if (!me->h) - return 0; - stuff->device_specific_mailslot = (void *) mi; - return 1; -} - -static void -mailslot_cleanup (select_record *, select_stuff *stuff) -{ - mailslotinf *mi = (mailslotinf *) stuff->device_specific_mailslot; - if (mi && mi->thread) - { - mi->stop_thread_mailslot = true; - mi->thread->detach (); - delete mi; - stuff->device_specific_mailslot = NULL; - } -} - -select_record * -fhandler_mailslot::select_read (select_record *s) -{ - if (!s) - s = new select_record; - s->startup = start_thread_mailslot; - s->peek = peek_mailslot; - s->verify = verify_mailslot; - s->cleanup = mailslot_cleanup; - s->read_selected = true; - s->read_ready = false; - return s; -} -- cgit v1.2.3