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98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/* Test multi-threading using LD_AUDIT.
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Copyright (C) 2018-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* This test uses a dummy LD_AUDIT library (test-audit-threads-mod1) and a
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library with a huge number of functions in order to validate lazy symbol
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binding with an audit library. We use one thread per CPU to test that
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concurrent lazy resolution does not have any defects which would cause
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the process to fail. We use an LD_AUDIT library to force the testing of
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the relocation resolution caching code in the dynamic loader i.e.
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_dl_runtime_profile and _dl_profile_fixup. */
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#include <support/xthread.h>
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#include <strings.h>
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#include <stdlib.h>
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#include <sys/sysinfo.h>
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static int do_test (void);
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/* This test usually takes less than 3s to run. However, there are cases that
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take up to 30s. */
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#define TIMEOUT 60
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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/* Declare the functions we are going to call. */
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#define externnum
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#include "tst-audit-threads.h"
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#undef externnum
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int num_threads;
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pthread_barrier_t barrier;
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void
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sync_all (int num)
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{
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pthread_barrier_wait (&barrier);
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}
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void
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call_all_ret_nums (void)
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{
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/* Call each function one at a time from all threads. */
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#define callnum
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#include "tst-audit-threads.h"
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#undef callnum
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}
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void *
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thread_main (void *unused)
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{
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call_all_ret_nums ();
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return NULL;
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}
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#define STR2(X) #X
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#define STR(X) STR2(X)
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static int
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do_test (void)
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{
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int i;
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pthread_t *threads;
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num_threads = get_nprocs ();
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if (num_threads <= 1)
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num_threads = 2;
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/* Used to synchronize all the threads after calling each retNumN. */
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xpthread_barrier_init (&barrier, NULL, num_threads);
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threads = (pthread_t *) xcalloc (num_threads, sizeof(pthread_t));
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for (i = 0; i < num_threads; i++)
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threads[i] = xpthread_create(NULL, thread_main, NULL);
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for (i = 0; i < num_threads; i++)
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xpthread_join(threads[i]);
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free (threads);
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return 0;
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}
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