/* Thread attributes retrieval.

   Copyright (C) 2008-2018 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 <assert.h>

#include <errno.h>

#include <pthread.h>

#include <pt-internal.h>

/* Initialize thread attribute *ATTR with attributes corresponding to the

   already running thread THREAD.  It shall be called on an uninitialized ATTR

   and destroyed with pthread_attr_destroy when no longer needed.  */

int

__pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)

{

  struct __pthread *pthread;

  pthread = __pthread_getid (thread);

  if (pthread == NULL)

    return ESRCH;

  /* Some attributes (schedparam, inheritsched, contentionscope and schedpolicy)

     are not supported yet, so fill them with our default values.  */

  *attr = __pthread_default_attr;

  attr->__stackaddr = pthread->stackaddr +

      ((pthread->guardsize + __vm_page_size - 1)

       / __vm_page_size * __vm_page_size);

  attr->__stacksize = pthread->stacksize;

  attr->__guardsize = pthread->guardsize;

  attr->__detachstate = (pthread->state == PTHREAD_DETACHED

			 ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE);

  return 0;

}

weak_alias (__pthread_getattr_np, pthread_getattr_np)