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a2077e25 PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
61baf725 | 3 | Copyright 2015-2017 Free Software Foundation, Inc. |
a2077e25 PA |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program 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 | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <unistd.h> | |
19 | #include <stdio.h> | |
20 | #include <sys/types.h> | |
21 | #include <sys/wait.h> | |
22 | ||
23 | int save_parent; | |
24 | ||
25 | /* The fork child. Just runs forever. */ | |
26 | ||
27 | static int | |
28 | fork_child (void) | |
29 | { | |
30 | while (1) | |
31 | { | |
32 | sleep (1); | |
33 | ||
34 | /* Exit if GDB kills the parent. */ | |
35 | if (getppid () != save_parent) | |
36 | break; | |
37 | if (kill (getppid (), 0) != 0) | |
38 | break; | |
39 | } | |
40 | ||
41 | return 0; | |
42 | } | |
43 | ||
44 | /* The fork parent. Just runs forever waiting for the child to | |
45 | exit. */ | |
46 | ||
47 | static int | |
48 | fork_parent (void) | |
49 | { | |
50 | if (wait (NULL) == -1) | |
51 | { | |
52 | perror ("wait"); | |
53 | return 1; | |
54 | } | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | int | |
60 | main (void) | |
61 | { | |
62 | pid_t pid; | |
63 | ||
64 | save_parent = getpid (); | |
65 | ||
66 | /* Don't run forever. */ | |
67 | alarm (180); | |
68 | ||
69 | /* The parent and child should basically run forever without | |
70 | tripping on any debug event. We want to check that GDB updates | |
71 | the parent and child running states correctly right after the | |
72 | fork. */ | |
73 | pid = fork (); | |
74 | if (pid > 0) | |
75 | return fork_parent (); | |
76 | else if (pid == 0) | |
77 | return fork_child (); | |
78 | else | |
79 | { | |
80 | perror ("fork"); | |
81 | return 1; | |
82 | } | |
83 | } |