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e58b0e63 PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
4c38e0a4 | 3 | Copyright 2008, 2009, 2010 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; | |
31 | ||
32 | static void * | |
33 | start (void *arg) | |
34 | { | |
35 | while (!done) | |
36 | usleep (100); | |
37 | assert (0); | |
38 | return arg; | |
39 | } | |
40 | ||
41 | void * | |
42 | thread_function (void *arg) | |
43 | { | |
44 | int x = * (int *) arg; | |
45 | ||
46 | printf ("Thread <%d> executing\n", x); | |
47 | ||
48 | while (!done) | |
49 | usleep (100); | |
50 | ||
51 | return NULL; | |
52 | } | |
53 | ||
54 | void * | |
55 | thread_forker (void *arg) | |
56 | { | |
57 | int x = * (int *) arg; | |
58 | pid_t pid; | |
59 | int rv; | |
60 | int i; | |
61 | pthread_t thread; | |
62 | ||
63 | printf ("Thread forker <%d> executing\n", x); | |
64 | ||
65 | switch ((pid = fork ())) | |
66 | { | |
67 | case -1: | |
68 | assert (0); | |
69 | default: | |
70 | wait (&rv); | |
71 | done = 1; | |
72 | break; | |
73 | case 0: | |
74 | i = pthread_create (&thread, NULL, start, NULL); | |
75 | assert (i == 0); | |
76 | i = pthread_join (thread, NULL); | |
77 | assert (i == 0); | |
78 | ||
79 | assert (0); | |
80 | } | |
81 | ||
82 | return NULL; | |
83 | } | |
84 | ||
85 | int | |
86 | main (void) | |
87 | { | |
88 | pthread_t threads[NUMTHREADS]; | |
89 | int args[NUMTHREADS]; | |
90 | int i, j; | |
91 | ||
92 | /* Create a few threads that do mostly nothing, and then one that | |
93 | forks. */ | |
94 | for (j = 0; j < NUMTHREADS - 1; ++j) | |
95 | { | |
96 | args[j] = j; | |
97 | pthread_create (&threads[j], NULL, thread_function, &args[j]); | |
98 | } | |
99 | ||
100 | args[j] = j; | |
101 | pthread_create (&threads[j], NULL, thread_forker, &args[j]); | |
102 | ||
103 | for (j = 0; j < NUMTHREADS; ++j) | |
104 | { | |
105 | pthread_join (threads[j], NULL); | |
106 | } | |
107 | ||
108 | return 0; | |
109 | } |