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e5d262ef TMQMF |
1 | /* Test multi-threading using LD_AUDIT. |
2 | ||
dff8da6b | 3 | Copyright (C) 2018-2024 Free Software Foundation, Inc. |
e5d262ef TMQMF |
4 | This file is part of the GNU C Library. |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, see | |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
e5d262ef TMQMF |
19 | |
20 | /* This test uses a dummy LD_AUDIT library (test-audit-threads-mod1) and a | |
21 | library with a huge number of functions in order to validate lazy symbol | |
22 | binding with an audit library. We use one thread per CPU to test that | |
23 | concurrent lazy resolution does not have any defects which would cause | |
24 | the process to fail. We use an LD_AUDIT library to force the testing of | |
25 | the relocation resolution caching code in the dynamic loader i.e. | |
26 | _dl_runtime_profile and _dl_profile_fixup. */ | |
27 | ||
66081e38 | 28 | #include <support/support.h> |
e5d262ef TMQMF |
29 | #include <support/xthread.h> |
30 | #include <strings.h> | |
31 | #include <stdlib.h> | |
32 | #include <sys/sysinfo.h> | |
33 | ||
e5d262ef TMQMF |
34 | /* Declare the functions we are going to call. */ |
35 | #define externnum | |
36 | #include "tst-audit-threads.h" | |
37 | #undef externnum | |
38 | ||
39 | int num_threads; | |
40 | pthread_barrier_t barrier; | |
41 | ||
42 | void | |
43 | sync_all (int num) | |
44 | { | |
45 | pthread_barrier_wait (&barrier); | |
46 | } | |
47 | ||
48 | void | |
49 | call_all_ret_nums (void) | |
50 | { | |
51 | /* Call each function one at a time from all threads. */ | |
52 | #define callnum | |
53 | #include "tst-audit-threads.h" | |
54 | #undef callnum | |
55 | } | |
56 | ||
57 | void * | |
58 | thread_main (void *unused) | |
59 | { | |
60 | call_all_ret_nums (); | |
61 | return NULL; | |
62 | } | |
63 | ||
64 | #define STR2(X) #X | |
65 | #define STR(X) STR2(X) | |
66 | ||
67 | static int | |
68 | do_test (void) | |
69 | { | |
70 | int i; | |
71 | pthread_t *threads; | |
72 | ||
73 | num_threads = get_nprocs (); | |
74 | if (num_threads <= 1) | |
75 | num_threads = 2; | |
76 | ||
77 | /* Used to synchronize all the threads after calling each retNumN. */ | |
78 | xpthread_barrier_init (&barrier, NULL, num_threads); | |
79 | ||
c4f50205 | 80 | threads = (pthread_t *) xcalloc (num_threads, sizeof (pthread_t)); |
e5d262ef TMQMF |
81 | for (i = 0; i < num_threads; i++) |
82 | threads[i] = xpthread_create(NULL, thread_main, NULL); | |
83 | ||
84 | for (i = 0; i < num_threads; i++) | |
85 | xpthread_join(threads[i]); | |
86 | ||
87 | free (threads); | |
88 | ||
89 | return 0; | |
90 | } | |
66081e38 FW |
91 | |
92 | /* This test usually takes less than 3s to run. However, there are cases that | |
93 | take up to 30s. */ | |
94 | #define TIMEOUT 60 | |
95 | #include <support/test-driver.c> |