sysdeps/pthread/tst-pthread_kill-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 the default pthread_kill returns 0 (and not
  20    ESRCH) for a thread that has exited on the kernel side.  */
  21
  22 #include <errno.h>
  23 #include <pthread.h>
  24 #include <shlib-compat.h>
  25 #include <signal.h>
  26 #include <stddef.h>
  27 #include <support/check.h>
  28 #include <support/support.h>
  29 #include <support/xthread.h>
  30
  31 static void *
  32 noop_thread (void *closure)
  33 {
  34   return NULL;
  35 }
  36
  37 #if TEST_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34) && PTHREAD_IN_LIBC
  38 extern __typeof (pthread_kill) compat_pthread_kill;
  39 compat_symbol_reference (libpthread, compat_pthread_kill, pthread_kill,
  40                          GLIBC_2_0);
  41 #endif
  42
  43 static int
  44 do_test (void)
  45 {
  46   pthread_t thr = xpthread_create (NULL, noop_thread, NULL);
  47
  48   support_wait_for_thread_exit ();
  49
  50   /* NB: Always uses the default symbol due to separate compilation.  */
  51   xpthread_kill (thr, SIGUSR1);
  52
  53 #if TEST_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34) && PTHREAD_IN_LIBC
  54   /* Old binaries need the non-conforming ESRCH error code.  */
  55   TEST_COMPARE (compat_pthread_kill (thr, SIGUSR1), ESRCH);
  56 #endif
  57
  58   xpthread_join (thr);
  59
  60   return 0;
  61 }
  62
  63 #include <support/test-driver.c>