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Cygwin: pty: Stop counting number of slaves attached to pseudo console.

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- The number of slaves attached to pseudo console is used only for
  triggering redraw screen. Counting was not only needless, but also
  did not work as expected. This patch removes the code for counting.
This commit is contained in:
Takashi Yano via Cygwin-patches
2020-05-25 17:49:08 +09:00
committed by Corinna Vinschen
parent c26e08095d
commit 8d7a5b39d2
3 changed files with 6 additions and 20 deletions
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22
winsup/cygwin/fhandler_tty.cc
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@ -1019,8 +1019,6 @@ fhandler_pty_slave::close ()
fhandler_pty_common::close ();
if (!ForceCloseHandle (output_mutex))
termios_printf ("CloseHandle (output_mutex<%p>), %E", output_mutex);
if (pcon_attached_to == get_minor ())
get_ttyp ()->num_pcon_attached_slaves --;
return 0;
}
@ -2924,21 +2922,11 @@ fhandler_pty_slave::fixup_after_attach (bool native_maybe, int fd_set)
{
if (fhandler_console::get_console_process_id (get_helper_process_id (),
true))
{
if (pcon_attached_to != get_minor ())
{
pcon_attached_to = get_minor ();
init_console_handler (true);
}
/* Clear screen to synchronize pseudo console screen buffer
with real terminal. This is necessary because pseudo
console screen buffer is empty at start. */
if (get_ttyp ()->num_pcon_attached_slaves == 0)
/* Assume this is the first process using this pty slave. */
get_ttyp ()->need_redraw_screen = true;
get_ttyp ()->num_pcon_attached_slaves ++;
}
if (pcon_attached_to != get_minor ())
{
pcon_attached_to = get_minor ();
init_console_handler (true);
}
#if 0 /* This is for debug only. */
isHybrid = true;