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1 | /* A small multi-threaded test case. |
2 | ||
32d0add0 | 3 | Copyright 2004-2015 Free Software Foundation, Inc. |
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4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
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10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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19 | |
20 | #include <pthread.h> | |
21 | #include <stdio.h> | |
22 | #include <time.h> | |
37bc665e | 23 | #include <unistd.h> |
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24 | |
25 | void | |
26 | cond_wait (pthread_cond_t *cond, pthread_mutex_t *mut) | |
27 | { | |
28 | pthread_mutex_lock(mut); | |
29 | pthread_cond_wait (cond, mut); | |
30 | pthread_mutex_unlock (mut); | |
31 | } | |
32 | ||
33 | void | |
34 | noreturn (void) | |
35 | { | |
36 | pthread_mutex_t mut; | |
37 | pthread_cond_t cond; | |
38 | ||
39 | pthread_mutex_init (&mut, NULL); | |
40 | pthread_cond_init (&cond, NULL); | |
41 | ||
42 | /* Wait for a condition that will never be signaled, so we effectively | |
43 | block the thread here. */ | |
44 | cond_wait (&cond, &mut); | |
45 | } | |
46 | ||
47 | void * | |
48 | forever_pthread (void *unused) | |
49 | { | |
50 | noreturn (); | |
51 | } | |
52 | ||
53 | void | |
54 | break_me (void) | |
55 | { | |
56 | /* Just an anchor to help putting a breakpoint. */ | |
57 | } | |
58 | ||
59 | int | |
60 | main (void) | |
61 | { | |
62 | pthread_t forever; | |
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63 | |
64 | pthread_create (&forever, NULL, forever_pthread, NULL); | |
65 | for (;;) | |
66 | { | |
420f4384 | 67 | sleep (2); |
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68 | break_me(); |
69 | } | |
70 | ||
71 | return 0; | |
72 | } | |
73 |