1/* Copyright (C) 2002-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <assert.h>
20#include <errno.h>
21#include <string.h>
22#include <unistd.h>
23#include "pthreadP.h"
24
25#include <shlib-compat.h>
26
27
28struct pthread_attr *__attr_list;
29int __attr_list_lock = LLL_LOCK_INITIALIZER;
30
31
32int
33__pthread_attr_init_2_1 (pthread_attr_t *attr)
34{
35 struct pthread_attr *iattr;
36
37 /* Many elements are initialized to zero so let us do it all at
38 once. This also takes care of clearing the bytes which are not
39 internally used. */
40 memset (attr, '\0', __SIZEOF_PTHREAD_ATTR_T);
41
42 assert (sizeof (*attr) >= sizeof (struct pthread_attr));
43 iattr = (struct pthread_attr *) attr;
44
45 /* Default guard size specified by the standard. */
46 iattr->guardsize = __getpagesize ();
47
48 return 0;
49}
50versioned_symbol (libpthread, __pthread_attr_init_2_1, pthread_attr_init,
51 GLIBC_2_1);
52
53
54#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
55int
56__pthread_attr_init_2_0 (pthread_attr_t *attr)
57{
58 /* This code is specific to the old LinuxThread code which has a too
59 small pthread_attr_t definition. The struct looked like
60 this: */
61 struct old_attr
62 {
63 int detachstate;
64 int schedpolicy;
65 struct sched_param schedparam;
66 int inheritsched;
67 int scope;
68 };
69 struct pthread_attr *iattr;
70
71 /* Many elements are initialized to zero so let us do it all at
72 once. This also takes care of clearing the bytes which are not
73 internally used. */
74 memset (attr, '\0', sizeof (struct old_attr));
75
76 iattr = (struct pthread_attr *) attr;
77 iattr->flags |= ATTR_FLAG_OLDATTR;
78
79 /* We cannot enqueue the attribute because that member is not in the
80 old attribute structure. */
81 return 0;
82}
83compat_symbol (libpthread, __pthread_attr_init_2_0, pthread_attr_init,
84 GLIBC_2_0);
85#endif
86