1 | /* Support file for atexit/exit, etc. race tests (BZ #27749). |
2 | Copyright (C) 2023-2024 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 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 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | /* Check that atexit handler registered from another handler still called. */ |
20 | |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <support/check.h> |
24 | #include <support/xunistd.h> |
25 | #include <sys/wait.h> |
26 | #include <unistd.h> |
27 | |
28 | static void |
29 | atexit_cb (void) |
30 | { |
31 | } |
32 | |
33 | static void |
34 | atexit_last (void) |
35 | { |
36 | _exit (1); |
37 | } |
38 | |
39 | static void |
40 | atexit_recursive (void) |
41 | { |
42 | atexit (func: &atexit_cb); |
43 | atexit (func: &atexit_last); |
44 | } |
45 | |
46 | _Noreturn static void |
47 | test_and_exit (int count) |
48 | { |
49 | for (int i = 0; i < count; ++i) |
50 | atexit (func: &atexit_cb); |
51 | atexit (func: &atexit_recursive); |
52 | exit (0); |
53 | } |
54 | |
55 | static int |
56 | do_test (void) |
57 | { |
58 | for (int i = 0; i < 100; ++i) |
59 | if (xfork () == 0) |
60 | test_and_exit (count: i); |
61 | |
62 | for (int i = 0; i < 100; ++i) |
63 | { |
64 | int status; |
65 | xwaitpid (0, status: &status, flags: 0); |
66 | if (!WIFEXITED (status)) |
67 | FAIL_EXIT1 ("Failed iterations %d" , i); |
68 | TEST_COMPARE (WEXITSTATUS (status), 1); |
69 | } |
70 | |
71 | return 0; |
72 | } |
73 | |
74 | #define TEST_FUNCTION do_test |
75 | #include <support/test-driver.c> |
76 | |