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4dd63d48 PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright 2015-2020 Free Software Foundation, Inc. |
4dd63d48 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 <assert.h> | |
19 | #include <pthread.h> | |
20 | #include <unistd.h> | |
21 | #include <stdio.h> | |
22 | #include <sys/types.h> | |
23 | #include <sys/wait.h> | |
24 | ||
25 | ||
26 | /* Number of times the main process forks. */ | |
27 | #define NFORKS 10 | |
28 | ||
29 | /* Number of threads by each fork child. */ | |
30 | #define NTHREADS 10 | |
31 | ||
32 | static void * | |
33 | thread_func (void *arg) | |
34 | { | |
35 | /* Empty. */ | |
86e4e63d | 36 | return NULL; |
4dd63d48 PA |
37 | } |
38 | ||
39 | static void | |
40 | fork_child (void) | |
41 | { | |
42 | pthread_t threads[NTHREADS]; | |
43 | int i; | |
44 | int ret; | |
45 | ||
46 | for (i = 0; i < NTHREADS; i++) | |
47 | { | |
48 | ret = pthread_create (&threads[i], NULL, thread_func, NULL); | |
49 | assert (ret == 0); | |
50 | } | |
51 | ||
52 | for (i = 0; i < NTHREADS; i++) | |
53 | { | |
54 | ret = pthread_join (threads[i], NULL); | |
55 | assert (ret == 0); | |
56 | } | |
57 | } | |
58 | ||
59 | int | |
60 | main (void) | |
61 | { | |
62 | pid_t childs[NFORKS]; | |
63 | int i; | |
64 | int status; | |
65 | int num_exited = 0; | |
66 | ||
67 | /* Don't run forever if the wait loop below gets stuck. */ | |
68 | alarm (180); | |
69 | ||
70 | for (i = 0; i < NFORKS; i++) | |
71 | { | |
72 | pid_t pid; | |
73 | ||
74 | pid = fork (); | |
75 | ||
76 | if (pid > 0) | |
77 | { | |
78 | /* Parent. */ | |
79 | childs[i] = pid; | |
80 | } | |
81 | else if (pid == 0) | |
82 | { | |
83 | /* Child. */ | |
84 | fork_child (); | |
85 | return 0; | |
86 | } | |
87 | else | |
88 | { | |
89 | perror ("fork"); | |
90 | return 1; | |
91 | } | |
92 | } | |
93 | ||
94 | while (num_exited != NFORKS) | |
95 | { | |
96 | pid_t pid = wait (&status); | |
97 | ||
98 | if (pid == -1) | |
99 | { | |
100 | perror ("wait"); | |
101 | return 1; | |
102 | } | |
103 | ||
104 | if (WIFEXITED (status)) | |
105 | { | |
106 | num_exited++; | |
107 | } | |
108 | else | |
109 | { | |
110 | printf ("Hmm, unexpected wait status 0x%x from child %d\n", status, | |
111 | pid); | |
112 | } | |
113 | } | |
114 | ||
115 | return 0; | |
116 | } |