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e58b0e63 PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
32d0add0 | 3 | Copyright 2008-2015 Free Software Foundation, Inc. |
e58b0e63 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 <pthread.h> | |
19 | #include <assert.h> | |
20 | #include <unistd.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <errno.h> | |
24 | #include <unistd.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/wait.h> | |
27 | ||
28 | #define NUMTHREADS 10 | |
29 | ||
30 | volatile int done = 0; | |
18d19bd1 | 31 | static pthread_barrier_t barrier; |
e58b0e63 PA |
32 | |
33 | static void * | |
34 | start (void *arg) | |
35 | { | |
36 | while (!done) | |
37 | usleep (100); | |
38 | assert (0); | |
39 | return arg; | |
40 | } | |
41 | ||
42 | void * | |
43 | thread_function (void *arg) | |
44 | { | |
45 | int x = * (int *) arg; | |
46 | ||
47 | printf ("Thread <%d> executing\n", x); | |
48 | ||
18d19bd1 JK |
49 | pthread_barrier_wait (&barrier); |
50 | ||
e58b0e63 PA |
51 | while (!done) |
52 | usleep (100); | |
53 | ||
54 | return NULL; | |
55 | } | |
56 | ||
57 | void * | |
58 | thread_forker (void *arg) | |
59 | { | |
60 | int x = * (int *) arg; | |
61 | pid_t pid; | |
62 | int rv; | |
63 | int i; | |
64 | pthread_t thread; | |
65 | ||
66 | printf ("Thread forker <%d> executing\n", x); | |
67 | ||
18d19bd1 JK |
68 | pthread_barrier_wait (&barrier); |
69 | ||
e58b0e63 PA |
70 | switch ((pid = fork ())) |
71 | { | |
72 | case -1: | |
73 | assert (0); | |
74 | default: | |
75 | wait (&rv); | |
76 | done = 1; | |
77 | break; | |
78 | case 0: | |
79 | i = pthread_create (&thread, NULL, start, NULL); | |
80 | assert (i == 0); | |
81 | i = pthread_join (thread, NULL); | |
82 | assert (i == 0); | |
83 | ||
84 | assert (0); | |
85 | } | |
86 | ||
87 | return NULL; | |
88 | } | |
89 | ||
90 | int | |
91 | main (void) | |
92 | { | |
93 | pthread_t threads[NUMTHREADS]; | |
94 | int args[NUMTHREADS]; | |
95 | int i, j; | |
96 | ||
5b967901 JK |
97 | alarm (600); |
98 | ||
18d19bd1 JK |
99 | i = pthread_barrier_init (&barrier, NULL, NUMTHREADS); |
100 | assert (i == 0); | |
101 | ||
e58b0e63 PA |
102 | /* Create a few threads that do mostly nothing, and then one that |
103 | forks. */ | |
104 | for (j = 0; j < NUMTHREADS - 1; ++j) | |
105 | { | |
106 | args[j] = j; | |
107 | pthread_create (&threads[j], NULL, thread_function, &args[j]); | |
108 | } | |
109 | ||
110 | args[j] = j; | |
111 | pthread_create (&threads[j], NULL, thread_forker, &args[j]); | |
112 | ||
113 | for (j = 0; j < NUMTHREADS; ++j) | |
114 | { | |
115 | pthread_join (threads[j], NULL); | |
116 | } | |
117 | ||
118 | return 0; | |
119 | } |