| 1 | /* Test multi-threading using LD_AUDIT. |
|---|
| 2 | |
|---|
| 3 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
|---|
| 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 |
|---|
| 18 | <https://www.gnu.org/licenses/>. */ |
|---|
| 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 | |
|---|
| 28 | #include <support/support.h> |
|---|
| 29 | #include <support/xthread.h> |
|---|
| 30 | #include <strings.h> |
|---|
| 31 | #include <stdlib.h> |
|---|
| 32 | #include <sys/sysinfo.h> |
|---|
| 33 | |
|---|
| 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: &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: &barrier, NULL, count: num_threads); |
|---|
| 79 | |
|---|
| 80 | threads = (pthread_t *) xcalloc (n: num_threads, s: sizeof (pthread_t)); |
|---|
| 81 | for (i = 0; i < num_threads; i++) |
|---|
| 82 | threads[i] = xpthread_create(NULL, thread_func: thread_main, NULL); |
|---|
| 83 | |
|---|
| 84 | for (i = 0; i < num_threads; i++) |
|---|
| 85 | xpthread_join(thr: threads[i]); |
|---|
| 86 | |
|---|
| 87 | free (ptr: threads); |
|---|
| 88 | |
|---|
| 89 | return 0; |
|---|
| 90 | } |
|---|
| 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> |
|---|
| 96 | |
|---|
