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2b778ceb | 1 | /* Copyright (C) 2003-2021 Free Software Foundation, Inc. |
dfdd294a | 2 | This file is part of the GNU C Library. |
dfdd294a UD |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
dfdd294a UD |
17 | |
18 | #include <pthread.h> | |
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
825adeee | 21 | #include <dso_handle.h> |
dfdd294a UD |
22 | |
23 | ||
24 | extern int val; | |
25 | ||
26 | ||
27 | static void | |
28 | prepare (void) | |
29 | { | |
30 | ++val; | |
31 | } | |
32 | ||
33 | static void | |
34 | parent (void) | |
35 | { | |
36 | val *= 4; | |
37 | } | |
38 | ||
39 | static void | |
40 | child (void) | |
41 | { | |
42 | val *= 8; | |
43 | } | |
44 | ||
45 | static void | |
46 | __attribute__ ((constructor)) | |
47 | init (void) | |
48 | { | |
dfdd294a UD |
49 | printf ("dsohandle = %p\n", __dso_handle); |
50 | ||
51 | if (pthread_atfork (prepare, parent, child) != 0) | |
52 | { | |
53 | puts ("init: atfork failed"); | |
54 | exit (1); | |
55 | } | |
56 | } |