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a25a5a45 PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
3 | Copyright 2014 Free Software Foundation, Inc. | |
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 <stdlib.h> | |
22 | ||
23 | pthread_barrier_t barrier; | |
24 | ||
25 | volatile int second_child; | |
26 | ||
27 | void | |
28 | breakpoint_function (void) | |
29 | { | |
30 | /* GDB sets a breakpoint in this function. */ | |
31 | } | |
32 | ||
33 | void * | |
34 | child_function_0 (void *arg) | |
35 | { | |
36 | volatile unsigned int counter = 1; | |
37 | ||
38 | pthread_barrier_wait (&barrier); | |
39 | ||
40 | while (counter > 0) | |
41 | { | |
42 | counter++; | |
43 | usleep (1); | |
44 | ||
45 | if (second_child) | |
46 | continue; | |
47 | ||
48 | breakpoint_function (); | |
49 | } | |
50 | ||
51 | pthread_exit (NULL); | |
52 | } | |
53 | ||
54 | void * | |
55 | child_function_1 (void *arg) | |
56 | { | |
57 | volatile unsigned int counter = 1; | |
58 | ||
59 | pthread_barrier_wait (&barrier); | |
60 | ||
61 | while (counter > 0) | |
62 | { | |
63 | counter++; | |
64 | usleep (1); | |
65 | ||
66 | if (!second_child) | |
67 | continue; | |
68 | ||
69 | breakpoint_function (); | |
70 | } | |
71 | ||
72 | pthread_exit (NULL); | |
73 | } | |
74 | ||
75 | static int | |
76 | wait_threads (void) | |
77 | { | |
78 | return 1; /* in wait_threads */ | |
79 | } | |
80 | ||
81 | int | |
82 | main (void) | |
83 | { | |
84 | pthread_t child_thread[2]; | |
85 | int res; | |
86 | ||
87 | pthread_barrier_init (&barrier, NULL, 3); | |
88 | ||
89 | res = pthread_create (&child_thread[0], NULL, child_function_0, NULL); | |
90 | assert (res == 0); | |
91 | res = pthread_create (&child_thread[1], NULL, child_function_1, NULL); | |
92 | assert (res == 0); | |
93 | ||
94 | pthread_barrier_wait (&barrier); | |
95 | wait_threads (); /* set wait-thread breakpoint here */ | |
96 | ||
97 | pthread_join (child_thread[0], NULL); | |
98 | pthread_join (child_thread[1], NULL); | |
99 | ||
100 | exit (EXIT_SUCCESS); | |
101 | } |