aboutsummaryrefslogtreecommitdiff
path: root/nptl/tst-atfork1.c
blob: 5d5c40d62f21b13508bd052a9da15c3887380bcd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>


static int val;


static void
prepare1 (void)
{
  val *= 2;
}

static void
prepare2 (void)
{
  ++val;
}

static void
parent1 (void)
{
  val += 4;
}

static void
parent2 (void)
{
  val *= 4;
}

static void
child1 (void)
{
  val += 8;
}

static void
child2 (void)
{
  val *= 8;
}


static int
do_test (void)
{
  pid_t pid;
  int status = 0;

  if (pthread_atfork (prepare1, parent1, child1) != 0)
    {
      puts ("1st atfork failed");
      exit (1);
    }
  if (pthread_atfork (prepare2, parent2, child2) != 0)
    {
      puts ("2nd atfork failed");
      exit (1);
    }

  pid = fork ();
  if (pid == -1)
    {
      puts ("fork failed");
      exit (1);
    }

  if (pid != 0)
    {
      /* Parent.  */
      if (val != 24)
	{
	  printf ("expected val=%d, got %d\n", 24, val);
	  exit (1);
	}

      if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
	{
	  puts ("waitpid failed");
	  exit (1);
	}
    }
  else
    {
      /* Child.  */
      if (val != 80)
	{
	  printf ("expected val=%d, got %d\n", 80, val);
	  exit (2);
	}
    }

  return status;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"