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Cygwin: console: Make I/O functions thread-safe

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- POSIX states I/O functions shall be thread-safe, however, cygwin
  console I/O functions were not. This patch makes console I/O
  functions thread-safe.
This commit is contained in:
Takashi Yano
2019-04-01 00:47:48 +09:00
committed by Corinna Vinschen
parent 8382778cdb
commit f4b47827cf
3 changed files with 165 additions and 12 deletions
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23
winsup/cygwin/select.cc
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@@ -1039,15 +1039,20 @@ peek_console (select_record *me, bool)
set_handle_or_return_if_not_open (h, me);
while (!fh->input_ready && !fh->get_cons_readahead_valid ())
if (fh->bg_check (SIGTTIN, true) <= bg_eof)
return me->read_ready = true;
else if (!PeekConsoleInputW (h, &irec, 1, &events_read) || !events_read)
break;
else if (fhandler_console::input_winch == fh->process_input_message ())
{
set_sig_errno (EINTR);
return -1;
}
{
if (fh->bg_check (SIGTTIN, true) <= bg_eof)
return me->read_ready = true;
else if (!PeekConsoleInputW (h, &irec, 1, &events_read) || !events_read)
break;
fh->acquire_input_mutex (INFINITE);
if (fhandler_console::input_winch == fh->process_input_message ())
{
set_sig_errno (EINTR);
fh->release_input_mutex ();
return -1;
}
fh->release_input_mutex ();
}
if (fh->input_ready || fh->get_cons_readahead_valid ())
return me->read_ready = true;