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ede9f622 PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
3 | Copyright 2014-2015 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 <unistd.h> | |
20 | #include <stdlib.h> | |
21 | #include <signal.h> | |
22 | ||
23 | #define NUM_THREADS 10 | |
24 | const int num_threads = NUM_THREADS; | |
337532fa YQ |
25 | /* Allow for as much timeout as DejaGnu wants, plus a bit of |
26 | slack. */ | |
1ed415e2 PA |
27 | |
28 | volatile unsigned int timeout = TIMEOUT; | |
29 | #define SECONDS (timeout + 20) | |
ede9f622 PA |
30 | |
31 | pthread_t child_thread[NUM_THREADS]; | |
32 | volatile pthread_t signal_thread; | |
33 | volatile int got_sig; | |
34 | ||
35 | void | |
36 | handler (int signo) | |
37 | { | |
38 | got_sig = 1; | |
39 | } | |
40 | ||
41 | void | |
42 | loop_broke (void) | |
43 | { | |
44 | } | |
45 | ||
46 | #define INF_LOOP \ | |
47 | do \ | |
48 | { \ | |
49 | while (!got_sig) \ | |
50 | ; \ | |
51 | } \ | |
52 | while (0) | |
53 | ||
54 | void * | |
55 | child_function (void *arg) | |
56 | { | |
57 | pthread_t self = pthread_self (); | |
58 | ||
59 | while (1) | |
60 | { | |
337532fa YQ |
61 | /* Reset the timer before going to INF_LOOP. */ |
62 | alarm (SECONDS); | |
ede9f622 PA |
63 | INF_LOOP; /* set thread breakpoint here */ |
64 | loop_broke (); | |
65 | } | |
66 | } | |
67 | ||
68 | int | |
69 | main (void) | |
70 | { | |
71 | int res; | |
72 | int i; | |
73 | ||
1ed415e2 PA |
74 | /* Call these early so that we're sure their PLTs are quickly |
75 | resolved now, instead of in the busy threads. */ | |
76 | pthread_kill (pthread_self (), 0); | |
77 | alarm (0); | |
78 | ||
ede9f622 PA |
79 | signal (SIGUSR1, handler); |
80 | ||
81 | for (i = 0; i < NUM_THREADS; i++) | |
82 | { | |
83 | res = pthread_create (&child_thread[i], NULL, child_function, NULL); | |
84 | } | |
85 | ||
86 | while (1) | |
87 | { | |
88 | pthread_kill (signal_thread, SIGUSR1); /* set kill breakpoint here */ | |
337532fa YQ |
89 | /* Reset the timer before going to INF_LOOP. */ |
90 | alarm (SECONDS); | |
ede9f622 PA |
91 | INF_LOOP; |
92 | loop_broke (); | |
93 | } | |
94 | ||
95 | exit(EXIT_SUCCESS); | |
96 | } |