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* syscalls.cc (dup3): Fix debug typo.

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* fhandler.cc (flush_async_io): Assume only called for writer.  Call
GetOverlappedResult directly rather than kluding call to has_ongoing_io.
(fhandler_base_overlapped::close): Only start flush thread when closing write
handle.  Only cancel I/O when reading.
This commit is contained in:
Christopher Faylor
2012-01-31 23:52:52 +00:00
parent 37fbb8a741
commit d3cb1dffef
3 changed files with 19 additions and 8 deletions
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15
winsup/cygwin/fhandler.cc
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@@ -1156,11 +1156,10 @@ DWORD WINAPI
flush_async_io (void *arg)
{
fhandler_base_overlapped *fh = (fhandler_base_overlapped *) arg;
debug_only_printf ("waiting for %s I/O for %s",
(fh->get_access () & GENERIC_WRITE) ? "write" : "read",
fh->get_name ());
SetEvent (fh->get_overlapped ()->hEvent); /* force has_ongoing_io to block */
bool res = fh->has_ongoing_io ();
debug_only_printf ("waiting for write I/O for %s", fh->get_name ());
DWORD nbytes;
bool res = GetOverlappedResult (fh->get_output_handle (),
fh->get_overlapped (), &nbytes, true);
debug_printf ("finished waiting for I/O from %s, res %d", fh->get_name (),
res);
fh->close ();
@@ -1210,9 +1209,10 @@ int
fhandler_base_overlapped::close ()
{
int res;
int writer = (get_access () & GENERIC_WRITE);
/* Need to treat non-blocking I/O specially because Windows appears to
be brain-dead */
if (is_nonblocking () && has_ongoing_io ())
if (writer && is_nonblocking () && has_ongoing_io ())
{
clone (HEAP_3_FHANDLER)->check_later ();
res = 0;
@@ -1221,7 +1221,8 @@ fhandler_base_overlapped::close ()
{
/* Cancelling seems to be necessary for cases where a reader is
still executing when a signal handler performs a close. */
CancelIo (get_io_handle ());
if (!writer)
CancelIo (get_io_handle ());
destroy_overlapped ();
res = fhandler_base::close ();
}