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Cygwin: console: Add support for FLUSHO and Ctrl-O. 

- With this patch, FLUSHO and Ctrl-O (VDISCARD) get working.
This commit is contained in:
Takashi Yano via Cygwin-patches 2021-02-19 17:44:02 +09:00 committed by Corinna Vinschen
parent 9677efcf00
commit b56a371436
1 changed files with 11 additions and 0 deletions
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11
winsup/cygwin/fhandler_console.cc
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@ -259,6 +259,7 @@ fhandler_console::cons_master_thread (handle_set_t *p, tty *ttyp)
{ {
ttyp->kill_pgrp (sig); ttyp->kill_pgrp (sig);
ttyp->output_stopped = false; ttyp->output_stopped = false;
ti.c_lflag &= ~FLUSHO;
/* Discard type ahead input */ /* Discard type ahead input */
goto skip_writeback; goto skip_writeback;
} }
@ -286,6 +287,13 @@ fhandler_console::cons_master_thread (handle_set_t *p, tty *ttyp)
&& c && i >= output_stopped_at) && c && i >= output_stopped_at)
goto restart_output; goto restart_output;
} }
if ((ti.c_lflag & ICANON) && (ti.c_lflag & IEXTEN)
&& CCEQ (ti.c_cc[VDISCARD], c))
{
if (input_rec[i].Event.KeyEvent.bKeyDown)
ti.c_lflag ^= FLUSHO;
processed = true;
}
break; break;
case WINDOW_BUFFER_SIZE_EVENT: case WINDOW_BUFFER_SIZE_EVENT:
SHORT y = con.dwWinSize.Y; SHORT y = con.dwWinSize.Y;
@ -3052,6 +3060,9 @@ fhandler_console::write (const void *vsrc, size_t len)
if (bg <= bg_eof) if (bg <= bg_eof)
return (ssize_t) bg; return (ssize_t) bg;
if (get_ttyp ()->ti.c_lflag & FLUSHO)
return len; /* Discard write data */
if (get_ttyp ()->output_stopped && is_nonblocking ()) if (get_ttyp ()->output_stopped && is_nonblocking ())
{ {
set_errno (EAGAIN); set_errno (EAGAIN);