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0e5bf2a8 PA |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
e2882c85 | 3 | Copyright 2009-2018 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> | |
37bc665e MW |
21 | #include <stdio.h> |
22 | #include <string.h> | |
0e5bf2a8 PA |
23 | #include <assert.h> |
24 | ||
25 | static const char *image; | |
26 | static pthread_barrier_t barrier; | |
27 | static char *argv1 = "go away"; | |
28 | ||
29 | static void * | |
30 | thread_execler (void *arg) | |
31 | { | |
32 | int i; | |
33 | ||
34 | pthread_barrier_wait (&barrier); | |
35 | ||
36 | /* Exec ourselves again. */ | |
37 | if (execl (image, image, argv1, NULL) == -1) /* break-here */ | |
38 | { | |
39 | perror ("execl"); | |
40 | abort (); | |
41 | } | |
42 | ||
43 | return NULL; | |
44 | } | |
45 | ||
46 | static void * | |
47 | just_loop (void *arg) | |
48 | { | |
49 | unsigned int i; | |
50 | ||
51 | pthread_barrier_wait (&barrier); | |
52 | ||
53 | for (i = 1; i > 0; i++) | |
54 | usleep (1); | |
55 | ||
56 | return NULL; | |
57 | } | |
58 | ||
59 | #define THREADS 5 | |
60 | ||
61 | pthread_t loop_thread[THREADS]; | |
62 | ||
63 | int | |
64 | main (int argc, char **argv) | |
65 | { | |
66 | pthread_t thread; | |
67 | int i, t; | |
68 | ||
69 | image = argv[0]; | |
70 | ||
71 | /* Pass "inf" as argument to keep re-execing ad infinitum, which can | |
72 | be useful for manual testing. Passing any other argument exits | |
73 | immediately (and that's what the execl above does by | |
74 | default). */ | |
75 | if (argc == 2 && strcmp (argv[1], "inf") == 0) | |
76 | argv1 = argv[1]; | |
77 | else if (argc > 1) | |
78 | exit (0); | |
79 | ||
80 | pthread_barrier_init (&barrier, NULL, 2 + THREADS); | |
81 | ||
82 | i = pthread_create (&thread, NULL, thread_execler, NULL); | |
83 | assert (i == 0); | |
84 | ||
85 | for (t = 0; t < THREADS; t++) | |
86 | { | |
87 | i = pthread_create (&loop_thread[t], NULL, just_loop, NULL); | |
88 | assert (i == 0); | |
89 | } | |
90 | ||
91 | pthread_barrier_wait (&barrier); | |
92 | pthread_join (thread, NULL); | |
93 | return 0; | |
94 | } |