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/* Separate thread test for pthread_getaffinity_np, pthread_setaffinity_np.
Copyright (C) 2015-2024 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
/* Defined for the benefit of tst-skeleton-thread-affinity.c, included
below. This variant runs the functions on a separate thread. */
struct affinity_access_task
{
pthread_t thread;
cpu_set_t *set;
size_t size;
bool get;
int result;
};
static void *
affinity_access_thread (void *closure)
{
struct affinity_access_task *task = closure;
if (task->get)
task->result = pthread_getaffinity_np
(task->thread, task->size, task->set);
else
task->result = pthread_setaffinity_np
(task->thread, task->size, task->set);
return NULL;
}
static int
run_affinity_access_thread (cpu_set_t *set, size_t size, bool get)
{
struct affinity_access_task task =
{
.thread = pthread_self (),
.set = set,
.size = size,
.get = get
};
pthread_t thr;
int ret = pthread_create (&thr, NULL, affinity_access_thread, &task);
if (ret != 0)
{
errno = ret;
printf ("error: could not create affinity access thread: %m\n");
abort ();
}
ret = pthread_join (thr, NULL);
if (ret != 0)
{
errno = ret;
printf ("error: could not join affinity access thread: %m\n");
abort ();
}
if (task.result != 0)
{
errno = task.result;
return -1;
}
return 0;
}
static int
setaffinity (size_t size, const cpu_set_t *set)
{
return run_affinity_access_thread ((cpu_set_t *) set, size, false);
}
static int
getaffinity (size_t size, cpu_set_t *set)
{
return run_affinity_access_thread (set, size, true);
}
#include "tst-skeleton-thread-affinity.c"
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