sysdeps/pthread/tst-pthread_cancel-exited.c

   1 /* Test that pthread_kill succeeds for an exited thread.
   2    Copyright (C) 2021-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* This test verifies that pthread_kill returns 0 (and not ESRCH) for
  20    a thread that has exited on the kernel side.  */
  21
  22 #include <stddef.h>
  23 #include <support/support.h>
  24 #include <support/xthread.h>
  25
  26 static void *
  27 noop_thread (void *closure)
  28 {
  29   return NULL;
  30 }
  31
  32 static int
  33 do_test (void)
  34 {
  35   pthread_t thr = xpthread_create (NULL, noop_thread, NULL);
  36
  37   support_wait_for_thread_exit ();
  38
  39   xpthread_cancel (thr);
  40   xpthread_join (thr);
  41
  42   return 0;
  43 }
  44
  45 #include <support/test-driver.c>