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[glibc/history.git] / nptl / tst-atfork1.c
blobb42ab424696fe6c3ca8268ba54f3d2066e649ae7
1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <errno.h>
21 #include <pthread.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25 #include <sys/wait.h>
28 static int val;
31 static void
32 prepare1 (void)
34 val *= 2;
37 static void
38 prepare2 (void)
40 ++val;
43 static void
44 parent1 (void)
46 val += 4;
49 static void
50 parent2 (void)
52 val *= 4;
55 static void
56 child1 (void)
58 val += 8;
61 static void
62 child2 (void)
64 val *= 8;
68 static int
69 do_test (void)
71 pid_t pid;
72 int status = 0;
74 if (pthread_atfork (prepare1, parent1, child1) != 0)
76 puts ("1st atfork failed");
77 exit (1);
79 if (pthread_atfork (prepare2, parent2, child2) != 0)
81 puts ("2nd atfork failed");
82 exit (1);
85 pid = fork ();
86 if (pid == -1)
88 puts ("fork failed");
89 exit (1);
92 if (pid != 0)
94 /* Parent. */
95 if (val != 24)
97 printf ("expected val=%d, got %d\n", 24, val);
98 exit (1);
101 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
103 puts ("waitpid failed");
104 exit (1);
107 else
109 /* Child. */
110 if (val != 80)
112 printf ("expected val=%d, got %d\n", 80, val);
113 exit (2);
117 return status;
120 #define TEST_FUNCTION do_test ()
121 #include "../test-skeleton.c"