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bfff8b1b | 1 | /* Copyright (C) 2002-2017 Free Software Foundation, Inc. |
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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 | ||
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10 | In addition to the permissions in the GNU Lesser General Public |
11 | License, the Free Software Foundation gives you unlimited | |
12 | permission to link the compiled version of this file with other | |
13 | programs, and to distribute those programs without any restriction | |
14 | coming from the use of this file. (The GNU Lesser General Public | |
15 | License restrictions do apply in other respects; for example, they | |
16 | cover modification of the file, and distribution when not linked | |
17 | into another program.) | |
18 | ||
19 | Note that people who make modified versions of this file are not | |
20 | obligated to grant this special exception for their modified | |
21 | versions; it is their choice whether to do so. The GNU Lesser | |
22 | General Public License gives permission to release a modified | |
23 | version without this exception; this exception also makes it | |
24 | possible to release a modified version which carries forward this | |
25 | exception. | |
26 | ||
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27 | The GNU C Library is distributed in the hope that it will be useful, |
28 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
29 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
30 | Lesser General Public License for more details. | |
31 | ||
32 | You should have received a copy of the GNU Lesser General Public | |
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33 | License along with the GNU C Library; if not, see |
34 | <http://www.gnu.org/licenses/>. */ | |
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35 | |
36 | #include "pthreadP.h" | |
37 | #include <fork.h> | |
38 | ||
39 | /* This is defined by newer gcc version unique for each module. */ | |
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40 | extern void *__dso_handle __attribute__ ((__weak__, |
41 | __visibility__ ("hidden"))); | |
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42 | |
43 | ||
44 | /* Hide the symbol so that no definition but the one locally in the | |
45 | executable or DSO is used. */ | |
46 | int | |
47 | #ifndef __pthread_atfork | |
48 | /* Don't mark the compatibility function as hidden. */ | |
49 | attribute_hidden | |
50 | #endif | |
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51 | __pthread_atfork (void (*prepare) (void), void (*parent) (void), |
52 | void (*child) (void)) | |
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53 | { |
54 | return __register_atfork (prepare, parent, child, | |
55 | &__dso_handle == NULL ? NULL : __dso_handle); | |
56 | } | |
57 | #ifndef __pthread_atfork | |
58 | extern int pthread_atfork (void (*prepare) (void), void (*parent) (void), | |
59 | void (*child) (void)) attribute_hidden; | |
60 | strong_alias (__pthread_atfork, pthread_atfork) | |
61 | #endif |