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99619bea PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
32d0add0 | 3 | Copyright 2009-2015 Free Software Foundation, Inc. |
99619bea PA |
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 <unistd.h> | |
20 | #include <stdlib.h> | |
21 | #include <signal.h> | |
22 | ||
23 | unsigned int args[2]; | |
24 | ||
25 | pthread_barrier_t barrier; | |
26 | pthread_t child_thread_2, child_thread_3; | |
27 | ||
28 | void | |
29 | callme (void) | |
30 | { | |
31 | } | |
32 | ||
33 | void * | |
34 | child_function_3 (void *arg) | |
35 | { | |
36 | int my_number = (long) arg; | |
37 | volatile int *myp = (int *) &args[my_number]; | |
38 | ||
39 | pthread_barrier_wait (&barrier); | |
40 | ||
41 | while (*myp > 0) | |
42 | { | |
43 | (*myp) ++; | |
44 | callme (); /* set breakpoint thread 3 here */ | |
45 | } | |
46 | ||
47 | pthread_exit (NULL); | |
48 | } | |
49 | ||
50 | void * | |
51 | child_function_2 (void *arg) | |
52 | { | |
53 | int my_number = (long) arg; | |
54 | volatile int *myp = (int *) &args[my_number]; | |
55 | ||
56 | pthread_barrier_wait (&barrier); | |
57 | ||
58 | while (*myp > 0) | |
59 | { | |
60 | (*myp) ++; | |
61 | callme (); /* set breakpoint thread 2 here */ | |
62 | } | |
63 | ||
64 | pthread_exit (NULL); | |
65 | } | |
66 | ||
67 | static int | |
68 | wait_threads (void) | |
69 | { | |
70 | return 1; /* in wait_threads */ | |
71 | } | |
72 | ||
73 | int | |
74 | main () | |
75 | { | |
76 | int res; | |
77 | long i; | |
78 | ||
79 | /* Call these early so that PLTs for these are resolved soon, | |
80 | instead of in the threads. RTLD_NOW should work as well. */ | |
81 | usleep (0); | |
82 | pthread_barrier_init (&barrier, NULL, 1); | |
83 | pthread_barrier_wait (&barrier); | |
84 | ||
85 | pthread_barrier_init (&barrier, NULL, 2); | |
86 | ||
87 | i = 0; | |
88 | args[i] = 1; | |
89 | res = pthread_create (&child_thread_2, | |
90 | NULL, child_function_2, (void *) i); | |
91 | pthread_barrier_wait (&barrier); | |
92 | callme (); | |
93 | ||
94 | i = 1; | |
95 | args[i] = 1; | |
96 | res = pthread_create (&child_thread_3, | |
97 | NULL, child_function_3, (void *) i); | |
98 | pthread_barrier_wait (&barrier); | |
99 | wait_threads (); /* set wait-threads breakpoint here */ | |
100 | ||
101 | pthread_join (child_thread_2, NULL); | |
102 | pthread_join (child_thread_3, NULL); | |
103 | ||
104 | exit(EXIT_SUCCESS); | |
105 | } |