nptl: Replace some stubs with the Linux implementation

The stubs for pthread_getaffinity_np, pthread_getname_np,
pthread_setaffinity_np, pthread_setname_np are replaced, and corresponding
tests are moved.

After the removal of the NaCl port, nptl is Linux-specific, and the stubs
are no longer needed.  This effectively reverts commit
c76d1ff5149bd03210f2bb8cd64446c51618d016 ("NPTL: Add stubs for Linux-only
extension functions.").

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/nptl/tst-thread-affinity-pthread2.c b/nptl/tst-thread-affinity-pthread2.c
new file mode 100644
index 0000000..3dd126f
--- /dev/null
+++ b/nptl/tst-thread-affinity-pthread2.c
@@ -0,0 +1,95 @@
+/* Separate thread test for pthread_getaffinity_np, pthread_setaffinity_np.
+   Copyright (C) 2015-2020 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"