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WL#2595 kernel-independent atomic operations

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Backport from 6.0.14 to 5.6.0

Original code from Sergei Golubchik
This commit is contained in:
Marc Alff
2009-11-17 17:11:32 -07:00
parent 9d3ddc48b8
commit 1e46d6a032
14 changed files with 681 additions and 288 deletions
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92
unittest/mysys/thr_template.c Normal file
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/* Copyright (C) 2006-2008 MySQL AB, 2008 Sun Microsystems, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <my_global.h>
#include <my_sys.h>
#include <my_atomic.h>
#include <tap.h>
volatile uint32 bad;
pthread_attr_t thr_attr;
pthread_mutex_t mutex;
pthread_cond_t cond;
uint running_threads;
void do_tests();
void test_concurrently(const char *test, pthread_handler handler, int n, int m)
{
pthread_t t;
ulonglong now= my_getsystime();
bad= 0;
diag("Testing %s with %d threads, %d iterations... ", test, n, m);
for (running_threads= n ; n ; n--)
{
if (pthread_create(&t, &thr_attr, handler, &m) != 0)
{
diag("Could not create thread");
abort();
}
}
pthread_mutex_lock(&mutex);
while (running_threads)
pthread_cond_wait(&cond, &mutex);
pthread_mutex_unlock(&mutex);
now= my_getsystime()-now;
ok(!bad, "tested %s in %g secs (%d)", test, ((double)now)/1e7, bad);
}
int main(int argc __attribute__((unused)), char **argv)
{
MY_INIT("thd_template");
if (argv[1] && *argv[1])
DBUG_SET_INITIAL(argv[1]);
pthread_mutex_init(&mutex, 0);
pthread_cond_init(&cond, 0);
pthread_attr_init(&thr_attr);
pthread_attr_setdetachstate(&thr_attr,PTHREAD_CREATE_DETACHED);
#ifdef MY_ATOMIC_MODE_RWLOCKS
#if defined(HPUX11) || defined(__POWERPC__) /* showed to be very slow (scheduler-related) */
#define CYCLES 300
#else
#define CYCLES 3000
#endif
#else
#define CYCLES 3000
#endif
#define THREADS 30
diag("N CPUs: %d, atomic ops: %s", my_getncpus(), MY_ATOMIC_MODE);
do_tests();
/*
workaround until we know why it crashes randomly on some machine
(BUG#22320).
*/
sleep(2);
pthread_mutex_destroy(&mutex);
pthread_cond_destroy(&cond);
pthread_attr_destroy(&thr_attr);
my_end(0);
return exit_status();
}