File: tst-pthread-attr-affinity.c

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/* Make sure that pthread_attr_getaffinity_np does not crash when the input
   cpuset size is smaller than that in the attribute structure.

   Copyright (C) 2013 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <pthread.h>
#include <stdio.h>
#include <sched.h>
#include <errno.h>
#include <sys/param.h>


#define RETURN_IF_FAIL(f, ...) \
  ({									      \
    int ret = f (__VA_ARGS__);						      \
    if (ret != 0)							      \
      {									      \
	printf ("%s:%d: %s returned %d (errno = %d)\n", __FILE__, __LINE__,   \
		#f, ret, errno);					      \
	return ret;							      \
      }									      \
  })

static int
do_test (void)
{
  for (int i = 0; i < 10; i++)
    {
      pthread_attr_t attr;
      cpu_set_t *cpuset = CPU_ALLOC (512);
      size_t cpusetsize = CPU_ALLOC_SIZE (512);
      CPU_ZERO_S (cpusetsize, cpuset);

      RETURN_IF_FAIL (pthread_attr_init, &attr);
      RETURN_IF_FAIL (pthread_attr_setaffinity_np, &attr, cpusetsize, cpuset);
      CPU_FREE (cpuset);

      cpuset = CPU_ALLOC (1);
      cpusetsize = CPU_ALLOC_SIZE (1);
      RETURN_IF_FAIL (pthread_attr_getaffinity_np, &attr, cpusetsize, cpuset);
      CPU_FREE (cpuset);
    }
  return 0;
}


#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"