gdb/testsuite/gdb.multi/multi-term-settings.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2017-2019 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 /* This program is intended to be started outside of gdb, and then
  19    attached to by gdb.  It loops for a while, but not forever.  */
  20
  21 #include <unistd.h>
  22 #include <stdio.h>
  23 #include <sys/types.h>
  24 #include <termios.h>
  25 #include <unistd.h>
  26 #include <signal.h>
  27
  28 int
  29 main ()
  30 {
  31   /* In case we inherit SIG_IGN.  */
  32   signal (SIGTTOU, SIG_DFL);
  33
  34   alarm (240);
  35
  36   int count = 0;
  37   while (1)
  38     {
  39       struct termios termios;
  40
  41       printf ("pid=%ld, count=%d\n", (long) getpid (), count++);
  42
  43       /* This generates a SIGTTOU if our progress group is not in the
  44          foreground.  */
  45       tcgetattr (0, &termios);
  46       tcsetattr (0, TCSANOW, &termios);
  47
  48       usleep (100000);
  49     }
  50
  51   return 0;
  52 }