nptl/tst-pthread-attr-affinity-fail.c

   1 /* Check if invalid pthread_attr_getaffinity_np does not run any code
   2    in the thread function.
   3    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <errno.h>
  21 #include <support/check.h>
  22 #include <support/xunistd.h>
  23 #include <support/xthread.h>
  24 #include <stdlib.h>
  25
  26 static void *
  27 thr_func (void *arg)
  28 {
  29   abort ();
  30   return NULL;
  31 }
  32
  33 static int
  34 do_test (void)
  35 {
  36   int max_cpu = xsysconf (_SC_NPROCESSORS_CONF) + 1;
  37   /* Set a affinity mask with an invalid CPU.  */
  38   cpu_set_t *cpuset = CPU_ALLOC (max_cpu);
  39   TEST_VERIFY_EXIT (cpuset != NULL);
  40   size_t cpusetsize = CPU_ALLOC_SIZE (max_cpu);
  41   CPU_ZERO_S (cpusetsize, cpuset);
  42   CPU_SET_S (max_cpu, cpusetsize, cpuset);
  43
  44   /* Check if the affinity mask does trigger an error.  */
  45   TEST_COMPARE (sched_setaffinity (0, cpusetsize, cpuset), -1);
  46   TEST_COMPARE (errno, EINVAL);
  47
  48   pthread_attr_t attr;
  49   xpthread_attr_init (&attr);
  50   xpthread_attr_setaffinity_np (&attr, cpusetsize, cpuset);
  51
  52   pthread_t thr;
  53   TEST_COMPARE (pthread_create (&thr, &attr, thr_func, NULL), EINVAL);
  54   xpthread_attr_destroy (&attr);
  55
  56   return 0;
  57 }
  58
  59 #include <support/test-driver.c>