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
|
/* This testcase is part of GDB, the GNU debugger.
Copyright 2017-2021 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>
#include <unistd.h>
/* GDB reads this to figure out the child's PID. */
pid_t child_pid;
void
marker (void)
{
}
int
main ()
{
/* Don't let the test case run forever. */
alarm (60);
child_pid = fork ();
switch (child_pid)
{
case -1:
return 1;
case 0:
break;
default:
/* In parent process. */
while (1)
{
marker ();
usleep (1000);
}
}
/* In child process. */
/* Alarms are not inherited by child processes. Set the alarm again to stop
the test case running forever. */
alarm (60);
/* Detach from controlling terminal. */
if (setsid () == (pid_t) -1)
return 1;
while (1)
usleep (1000);
return 0;
}
|
