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1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
61baf725 | 3 | Copyright 2014-2017 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 | |
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 | ||
22 | pthread_barrier_t barrier; | |
23 | pthread_t child_thread; | |
24 | ||
25 | volatile unsigned int counter = 1; | |
26 | ||
27 | void * | |
28 | child_function (void *arg) | |
29 | { | |
30 | pthread_barrier_wait (&barrier); | |
31 | ||
32 | while (counter > 0) | |
33 | { | |
34 | counter++; | |
35 | ||
36 | asm (" nop"); /* set breakpoint child here */ | |
37 | asm (" nop"); /* set breakpoint after step-over here */ | |
38 | usleep (1); | |
39 | } | |
40 | ||
41 | pthread_exit (NULL); | |
42 | } | |
43 | ||
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44 | int |
45 | main () | |
46 | { | |
47 | int res; | |
48 | long i; | |
49 | ||
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50 | alarm (300); |
51 | ||
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52 | pthread_barrier_init (&barrier, NULL, 2); |
53 | ||
54 | res = pthread_create (&child_thread, NULL, child_function, NULL); | |
55 | pthread_barrier_wait (&barrier); | |
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56 | |
57 | /* Use an infinite loop with no function calls so that "step" over | |
58 | this line never finishes before the breakpoint in the other | |
59 | thread triggers. That can happen if the step-over of thread 2 is | |
60 | done with displaced stepping on a target that is always in | |
61 | non-stop mode, as in that case GDB runs both threads | |
62 | simultaneously. */ | |
63 | while (1); /* set wait-thread breakpoint here */ | |
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64 | |
65 | pthread_join (child_thread, NULL); | |
66 | ||
67 | exit (EXIT_SUCCESS); | |
68 | } |