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glibc/sysdeps/unix/sysv/linux/tst-thread-affinity-pthread2.c
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/* Separate thread test for pthread_getaffinity_np, pthread_setaffinity_np. | |
Copyright (C) 2015-2016 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 <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" |