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/* Thread attributes retrieval.
Copyright (C) 2008-2021 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 <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)
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