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8f66807b AB |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
88b9d363 | 3 | Copyright 2021-2022 Free Software Foundation, Inc. |
8f66807b AB |
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 <stdlib.h> | |
19 | #include <pthread.h> | |
20 | #include <unistd.h> | |
21 | ||
22 | volatile int worker_blocked = 1; | |
23 | volatile int main_blocked = 1; | |
24 | ||
25 | void | |
26 | unlock_worker (void) | |
27 | { | |
28 | worker_blocked = 0; | |
29 | } | |
30 | ||
31 | void | |
32 | unlock_main (void) | |
33 | { | |
34 | main_blocked = 0; | |
35 | } | |
36 | ||
37 | void | |
38 | breakpt (void) | |
39 | { | |
40 | /* Nothing. */ | |
41 | } | |
42 | ||
43 | static void * | |
44 | worker (void *data) | |
45 | { | |
46 | unlock_main (); | |
47 | ||
48 | while (worker_blocked) | |
49 | ; | |
50 | ||
51 | breakpt (); | |
52 | ||
53 | return NULL; | |
54 | } | |
55 | ||
56 | int | |
57 | main (void) | |
58 | { | |
59 | pthread_t thr; | |
60 | void *retval; | |
61 | ||
62 | /* Ensure the test doesn't run forever. */ | |
63 | alarm (99); | |
64 | ||
65 | if (pthread_create (&thr, NULL, worker, NULL) != 0) | |
66 | abort (); | |
67 | ||
68 | while (main_blocked) | |
69 | ; | |
70 | ||
71 | unlock_worker (); | |
72 | ||
73 | if (pthread_join (thr, &retval) != 0) | |
74 | abort (); | |
75 | ||
76 | return 0; | |
77 | } |