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37e4754d LM |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
1d506c26 | 3 | Copyright 2002-2024 Free Software Foundation, Inc. |
37e4754d | 4 | |
d53a7b30 JB |
5 | Copyright 1992, 1993, 1994, 1995, 1999, 2002, 2003, 2007, 2008, 2009 |
6 | Free Software Foundation, Inc. | |
7 | ||
37e4754d LM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
d53a7b30 | 10 | the Free Software Foundation; either version 3 of the License, or |
37e4754d LM |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
d53a7b30 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
37e4754d LM |
20 | |
21 | This file is copied from schedlock.c. */ | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <unistd.h> | |
25 | #include <stdlib.h> | |
26 | #include <pthread.h> | |
27 | ||
28 | void *thread_function (void *arg); /* Pointer to function executed by each thread */ | |
29 | ||
a7b796db PA |
30 | static pthread_barrier_t threads_started_barrier; |
31 | ||
1a3da2cd AB |
32 | static pthread_barrier_t threads_started_barrier2; |
33 | ||
a7b796db PA |
34 | #define NUM 15 |
35 | ||
36 | static int num_threads = NUM; | |
37e4754d LM |
37 | |
38 | static unsigned int shared_var = 1; | |
39 | ||
40 | int main () { | |
41 | int res; | |
42 | pthread_t threads[NUM]; | |
43 | void *thread_result; | |
44 | long i; | |
45 | ||
169a2871 TV |
46 | alarm (180); |
47 | ||
a7b796db PA |
48 | pthread_barrier_init (&threads_started_barrier, NULL, NUM + 1); |
49 | ||
1a3da2cd AB |
50 | pthread_barrier_init (&threads_started_barrier2, NULL, 2); |
51 | ||
37e4754d LM |
52 | for (i = 0; i < NUM; i++) |
53 | { | |
54 | res = pthread_create (&threads[i], | |
55 | NULL, | |
56 | thread_function, | |
57 | (void *) i); | |
58 | } | |
59 | ||
a7b796db PA |
60 | pthread_barrier_wait (&threads_started_barrier); |
61 | ||
1a3da2cd AB |
62 | pthread_barrier_wait (&threads_started_barrier2); /* all threads started */ |
63 | ||
64 | pthread_join (threads[0], NULL); | |
65 | ||
169a2871 TV |
66 | /* first child thread exited */ |
67 | ||
68 | while (1) | |
69 | sleep (1); | |
37e4754d LM |
70 | |
71 | exit (EXIT_SUCCESS); | |
72 | } | |
73 | ||
a7b796db PA |
74 | void |
75 | loop (void) | |
76 | { | |
77 | } | |
78 | ||
37e4754d LM |
79 | void *thread_function (void *arg) { |
80 | int my_number = (long) arg; | |
a7b796db PA |
81 | |
82 | pthread_barrier_wait (&threads_started_barrier); | |
83 | ||
1a3da2cd | 84 | if (my_number > 0) |
37e4754d | 85 | { |
1a3da2cd AB |
86 | /* Don't run forever. Run just short of it :) */ |
87 | while (shared_var > 0) | |
88 | { | |
89 | shared_var++; | |
90 | usleep (1); /* Loop increment. */ | |
91 | loop (); | |
92 | } | |
37e4754d | 93 | } |
1a3da2cd AB |
94 | else |
95 | pthread_barrier_wait (&threads_started_barrier2); | |
37e4754d LM |
96 | |
97 | pthread_exit (NULL); | |
98 | } | |
99 |