52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/* Thread attributes retrieval.
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Copyright (C) 2008-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <pt-internal.h>
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/* Initialize thread attribute *ATTR with attributes corresponding to the
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already running thread THREAD. It shall be called on an uninitialized ATTR
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and destroyed with pthread_attr_destroy when no longer needed. */
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int
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__pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)
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{
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struct __pthread *pthread;
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pthread = __pthread_getid (thread);
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if (pthread == NULL)
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return ESRCH;
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/* Some attributes (schedparam, inheritsched, contentionscope and schedpolicy)
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are not supported yet, so fill them with our default values. */
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*attr = __pthread_default_attr;
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attr->__stackaddr = (pthread->stackaddr
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+ ((pthread->guardsize + __vm_page_size - 1)
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/ __vm_page_size * __vm_page_size));
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attr->__stacksize = pthread->stacksize;
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attr->__guardsize = pthread->guardsize;
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attr->__detachstate = (pthread->state == PTHREAD_DETACHED
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? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE);
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return 0;
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}
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weak_alias (__pthread_getattr_np, pthread_getattr_np)
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