parameter since we don't change the Win32 error here anymore.
(fhandler_base::raw_read): Accommodate change to is_at_eof.
* fhandler_disk_file.cc (fhandler_disk_file::pread): In binary mode use
direct call to NtReadFile, rather than lseek/read.
(fhandler_disk_file::pwrite): In binary mode use direct call to
NtWriteFile, rather than lseek/write.
in PID_EXITED state. Report pid 0 when pid does not exist rather than pid -1.
Make debug output reflect actual function call.
* sigproc.cc (stopped_or_terminated): Set process state to reaped when we've
finished waiting for it.
* include/sys/cygwin.h (PID_REAPED): New enum.
parent class to fhandler_base_overlapped. Remove declaration of
method write. Add declaraiotns for raw_read and raw_write.
* fhandler_mailslot.cc (fhandler_mailslot::fhandler_mailslot): Call
fhandler_base_overlapped constructor.
(fhandler_mailslot::fstat): Call fhandler_base_overlapped::fstat.
(fhandler_mailslot::open): Drop FILE_SYNCHRONOUS_IO_NONALERT flag from
call to NtOpenFile.
(fhandler_mailslot::raw_read): New method.
(fhandler_mailslot::raw_write): Ditto. Take over length algorithm from
former write method.
(fhandler_mailslot::write): Remove.
(fhandler_mailslot::ioctl): Call fhandler_base_overlapped::ioctl.
* fhandler_tape.cc (lock): Call _lock with false argument.
(_lock): Take bool cancelable parameter. Handle O_NONBLOCK.
Make cancelable if cancelabe parameter is true.
(fhandler_dev_tape::raw_read): Call _lock with true argument.
(fhandler_dev_tape::raw_write): Ditto.
(fhandler_dev_dsp::Audio_out::Audio_out): Take pointer to encapsulating
fhandler_dev_dsp as parameter.
(fhandler_dev_dsp::Audio_in::Audio_in): Ditto.
(fhandler_dev_dsp::Audio::Audio): Take pointer to encapsulating
fhandler_dev_dsp as parameter and store in fh.
(fhandler_dev_dsp::Audio_out::write): Change return type to int and
return number of bytes written. Return -1 if waitforspace returns false
and no bytes have been written so far.
(fhandler_dev_dsp::Audio_out::waitforspace): Change return type to bool.
Handle O_NONBLOCK. Make waiting loop interruptible and cancelable.
Return false in any of these cases, otherwise true.
(fhandler_dev_dsp::Audio_in::read): Set returned nBytes to -1 if
waitfordata returns false and nothing has been read so far.
(fhandler_dev_dsp::Audio_in::waitfordata): Change return type to bool.
Handle O_NONBLOCK. Make waiting loop interruptible and cancelable.
Return false in any of these cases, otherwise true.
(fhandler_dev_dsp::write): Call Audio_out constructor with this as
parameter.
(fhandler_dev_dsp::read): Call Audio_in constructor with this as
parameter.
(select_stuff::destroy): New inline method to delete memory taken
by select_stuff.
(select_stuff::~select_stuff): Call destroy.
(select_stuff::wait): Add case to allow canceling select.
* select.h (select_stuff::destroy): Declare.
* thread.cc: Mark poll, pselect and poll as cancelable.
nonblocking case. Drop useless waiter variable. Rewrite wait for
input_available_event to use a switch statement. Handle timeout and
failure more gracefully. Make restartable and cancelable. Rewrite
wait for input_mutex to use WFMO and a switch statement. Handle
timeout and failure more gracefully. Make restartable and cancelable.
after a signal. Add cancelability.
(fhandler_serial::raw_write): Wait for write to succeed if O_NONBLOCK
is not set. Add signal handling and cancelability.
* fhandler_socket.cc (fhandler_socket::connect): Ditto.
(fhandler_socket::accept4): Ditto.
(fhandler_socket::recvfrom): Ditto.
(fhandler_socket::recvmsg): Ditto.
(fhandler_socket::sendto): Ditto.
(fhandler_socket::sendmsg): Ditto.
* flock.cc (lf_setlock): Allow to cancel thread running blocking
file lock. Try to make code more readable.
(lockf): Call pthread_testcancel.
* mmap.cc (msync): Ditto.
* posix_ipc.cc (ipc_cond_timedwait): Call pthread::static_cancel_self
rather than pthread_testcancel.
* select.cc (cygwin_select): Call pthread_testcancel.
* syscalls.cc (pread): Ditto.
(pwrite): Ditto.
(readv): Ditto.
(writev): Ditto.
(open): Ditto.
(close): Ditto.
(fsync): Ditto.
* termios.cc (tcdrain): Ditto.
* thread.cc: Align list of cancellation points with above changes.
Mark not-implemented functions, too.
(cancelable_wait): Don't set unused object indices to WAIT_FAILED
since that could result in wrong behaviour. Set them to the invalid
value WAIT_TIMEOUT + 1 instead.
* thread.cc (pthread::pthread): Initialize canceled to false.
(pthread::cancel): Set canceled before setting cancel_event.
(pthread::testcancel): Check for canceled. Only wait for cancel_event
if canceled is true. Explain why.
(pthread::_fixup_after_fork): Set canceled to false.
* errno.cc (geterrno_from_nt_status): Define.
* flock.cc: Fix copyright dates.
* ntdll.h (enum _TIMER_TYPE): Define.
(PTIMER_APC_ROUTINE): Define.
(NtCancelTimer): Declare.
(NtCreateTimer): Declare.
(NtSetTimer): Declare.
* posix_ipc.cc (ipc_cond_timedwait): Rewrite to make interruptible and
restartable. Call pthread_testcancel in case of timeout to enable
pthread_cancel on waiting thread. Replace WFMO timeout with waiting
for a waitable timer. Explain why. Replace single call to WFMO with
two calls, one for the event, one for the mutex. Don't lock mutex in
case of error.
(ipc_cond_signal): Make void function.
(ipc_cond_close): Ditto.
(_mq_send): Immediately return -1 in case of error from
ipc_cond_timedwait.
(_mq_receive): Ditto.
Christopher Faylor
Corinna Vinschen
Yaakov Selkowitz