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33574c17 ST |
1 | /* Thread attributes retrieval. |
2 | Copyright (C) 2008-2018 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If | |
17 | not, see <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <assert.h> | |
20 | #include <errno.h> | |
21 | #include <pthread.h> | |
22 | ||
23 | #include <pt-internal.h> | |
24 | ||
25 | /* Initialize thread attribute *ATTR with attributes corresponding to the | |
26 | already running thread THREAD. It shall be called on an uninitialized ATTR | |
27 | and destroyed with pthread_attr_destroy when no longer needed. */ | |
28 | int | |
29 | __pthread_getattr_np (pthread_t thread, pthread_attr_t *attr) | |
30 | { | |
31 | struct __pthread *pthread; | |
32 | ||
33 | pthread = __pthread_getid (thread); | |
34 | if (pthread == NULL) | |
35 | return ESRCH; | |
36 | ||
37 | /* Some attributes (schedparam, inheritsched, contentionscope and schedpolicy) | |
38 | are not supported yet, so fill them with our default values. */ | |
39 | *attr = __pthread_default_attr; | |
40 | ||
41 | attr->__stackaddr = pthread->stackaddr + | |
42 | ((pthread->guardsize + __vm_page_size - 1) | |
43 | / __vm_page_size * __vm_page_size); | |
44 | attr->__stacksize = pthread->stacksize; | |
45 | attr->__guardsize = pthread->guardsize; | |
46 | attr->__detachstate = (pthread->state == PTHREAD_DETACHED | |
47 | ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE); | |
48 | ||
49 | return 0; | |
50 | } | |
51 | weak_alias (__pthread_getattr_np, pthread_getattr_np) |