1 /* Copyright (C) 2002-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <pthread.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <unistd.h>
23 #include <sys/wait.h>
24
25
26 static int val;
27
28
29 static void
prepare1(void)30 prepare1 (void)
31 {
32 val *= 2;
33 }
34
35 static void
prepare2(void)36 prepare2 (void)
37 {
38 ++val;
39 }
40
41 static void
parent1(void)42 parent1 (void)
43 {
44 val += 4;
45 }
46
47 static void
parent2(void)48 parent2 (void)
49 {
50 val *= 4;
51 }
52
53 static void
child1(void)54 child1 (void)
55 {
56 val += 8;
57 }
58
59 static void
child2(void)60 child2 (void)
61 {
62 val *= 8;
63 }
64
65
66 static int
do_test(void)67 do_test (void)
68 {
69 pid_t pid;
70 int status = 0;
71
72 if (pthread_atfork (prepare1, parent1, child1) != 0)
73 {
74 puts ("1st atfork failed");
75 exit (1);
76 }
77 if (pthread_atfork (prepare2, parent2, child2) != 0)
78 {
79 puts ("2nd atfork failed");
80 exit (1);
81 }
82
83 pid = fork ();
84 if (pid == -1)
85 {
86 puts ("fork failed");
87 exit (1);
88 }
89
90 if (pid != 0)
91 {
92 /* Parent. */
93 if (val != 24)
94 {
95 printf ("expected val=%d, got %d\n", 24, val);
96 exit (1);
97 }
98
99 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
100 {
101 puts ("waitpid failed");
102 exit (1);
103 }
104 }
105 else
106 {
107 /* Child. */
108 if (val != 80)
109 {
110 printf ("expected val=%d, got %d\n", 80, val);
111 exit (2);
112 }
113 }
114
115 return status;
116 }
117
118 #define TEST_FUNCTION do_test ()
119 #include "../test-skeleton.c"
120