1 | /* Copyright (C) 2002-2016 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 | |
28 | struct pthread_attr *__attr_list; |
29 | int __attr_list_lock = LLL_LOCK_INITIALIZER; |
30 | |
31 | |
32 | int |
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 | } |
50 | versioned_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) |
55 | int |
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 | } |
83 | compat_symbol (libpthread, __pthread_attr_init_2_0, pthread_attr_init, |
84 | GLIBC_2_0); |
85 | #endif |
86 | |