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1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
32d0add0 | 3 | Copyright 2002-2015 Free Software Foundation, Inc. |
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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 | |
a9762ec7 | 7 | the Free Software Foundation; either version 3 of the License, or |
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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 | |
a9762ec7 | 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
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17 | |
18 | This file is copied from schedlock.c. */ | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <unistd.h> | |
22 | #include <stdlib.h> | |
23 | #include <pthread.h> | |
24 | ||
b92b73c2 | 25 | void *thread_function (void *arg); /* Function executed by each thread. */ |
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26 | |
27 | #define NUM 5 | |
28 | ||
29 | unsigned int args[NUM+1]; | |
30 | ||
b92b73c2 DE |
31 | int |
32 | main () | |
33 | { | |
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34 | int res; |
35 | pthread_t threads[NUM]; | |
36 | void *thread_result; | |
37 | long i; | |
38 | ||
b92b73c2 DE |
39 | /* To keep the test determinative, initialize args first, |
40 | then start all the threads. Otherwise, the way watchthreads.exp | |
41 | is written, we have to worry about things like threads[0] getting | |
42 | to 29 hits of args[0] before args[1] gets changed. */ | |
43 | ||
44 | for (i = 0; i < NUM; i++) | |
45 | { | |
46 | /* The call to usleep is so that when the watchpoint triggers, | |
47 | the pc is still on the same line. */ | |
48 | args[i] = 1; usleep (1); /* Init value. */ | |
49 | } | |
50 | ||
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51 | for (i = 0; i < NUM; i++) |
52 | { | |
b92b73c2 DE |
53 | res = pthread_create (&threads[i], |
54 | NULL, | |
55 | thread_function, | |
56 | (void *) i); | |
e1923096 JJ |
57 | } |
58 | ||
59 | args[i] = 1; | |
60 | thread_function ((void *) i); | |
61 | ||
b92b73c2 | 62 | exit (EXIT_SUCCESS); |
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63 | } |
64 | ||
b92b73c2 DE |
65 | void * |
66 | thread_function (void *arg) | |
67 | { | |
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68 | int my_number = (long) arg; |
69 | int *myp = (int *) &args[my_number]; | |
70 | ||
71 | /* Don't run forever. Run just short of it :) */ | |
72 | while (*myp > 0) | |
73 | { | |
d983da9c | 74 | (*myp) ++; usleep (1); /* Loop increment. */ |
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75 | } |
76 | ||
b92b73c2 | 77 | pthread_exit (NULL); |
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78 | } |
79 |