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1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
c5a57081 | 3 | Copyright 2009-2012 Free Software Foundation, Inc. |
0e5bf2a8 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 <assert.h> | |
22 | ||
23 | static const char *image; | |
24 | static volatile pthread_t main_thread; | |
25 | static pthread_barrier_t barrier; | |
26 | static char *argv1 = "go away"; | |
27 | ||
28 | static void * | |
29 | thread_execler (void *arg) | |
30 | { | |
31 | int i; | |
32 | ||
33 | pthread_barrier_wait (&barrier); | |
34 | ||
35 | i = pthread_join (main_thread, NULL); | |
36 | assert (i == 0); | |
37 | ||
38 | /* Exec ourselves again. */ | |
39 | if (execl (image, image, argv1, NULL) == -1) /* break-here */ | |
40 | { | |
41 | perror ("execl"); | |
42 | abort (); | |
43 | } | |
44 | ||
45 | return NULL; | |
46 | } | |
47 | ||
48 | static void * | |
49 | just_loop (void *arg) | |
50 | { | |
51 | unsigned int i; | |
52 | ||
53 | pthread_barrier_wait (&barrier); | |
54 | ||
55 | for (i = 1; i > 0; i++) | |
56 | usleep (1); | |
57 | ||
58 | return NULL; | |
59 | } | |
60 | ||
61 | #define THREADS 5 | |
62 | ||
63 | pthread_t loop_thread[THREADS]; | |
64 | ||
65 | int | |
66 | main (int argc, char **argv) | |
67 | { | |
68 | pthread_t thread; | |
69 | int i, t; | |
70 | ||
71 | image = argv[0]; | |
72 | ||
73 | /* Pass "inf" as argument to keep re-execing ad infinitum, which can | |
74 | be useful for manual testing. Passing any other argument exits | |
75 | immediately (and that's what the execl above does by | |
76 | default). */ | |
77 | if (argc == 2 && strcmp (argv[1], "inf") == 0) | |
78 | argv1 = argv[1]; | |
79 | else if (argc > 1) | |
80 | exit (0); | |
81 | ||
82 | main_thread = pthread_self (); | |
83 | ||
84 | pthread_barrier_init (&barrier, NULL, 2 + THREADS); | |
85 | ||
86 | i = pthread_create (&thread, NULL, thread_execler, NULL); | |
87 | assert (i == 0); | |
88 | ||
89 | for (t = 0; t < THREADS; t++) | |
90 | { | |
91 | i = pthread_create (&loop_thread[t], NULL, just_loop, NULL); | |
92 | assert (i == 0); | |
93 | } | |
94 | ||
95 | pthread_barrier_wait (&barrier); | |
96 | ||
97 | pthread_exit (NULL); | |
98 | /* NOTREACHED */ | |
99 | return 0; | |
100 | } |