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/*
* Copyright (c) 2003-2005 Hewlett-Packard Development Company, L.P.
* Original Author: Hans Boehm
*
* This file may be redistributed and/or modified under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2, or (at your option) any later version.
*
* It 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 in the
* file doc/COPYING for more details.
*/
#if defined(HAVE_CONFIG_H)
# include "config.h"
#endif
#include "run_parallel.inc"
#include "test_atomic_include.h"
#ifdef AO_USE_PTHREAD_DEFS
# define NITERS 100000
#else
# define NITERS 10000000
#endif
void * add1sub1_thr(void * id);
int add1sub1_test(void);
void * acqrel_thr(void *id);
int acqrel_test(void);
void * test_and_set_thr(void * id);
int test_and_set_test(void);
#if defined(AO_HAVE_fetch_and_add1) && defined(AO_HAVE_fetch_and_sub1)
AO_t counter = 0;
void * add1sub1_thr(void * id)
{
int me = (int)(AO_PTRDIFF_T)id;
int i;
for (i = 0; i < NITERS; ++i)
if (me & 1)
AO_fetch_and_sub1(&counter);
else
AO_fetch_and_add1(&counter);
return 0;
}
int add1sub1_test(void)
{
return counter == 0;
}
#endif /* defined(AO_HAVE_fetch_and_add1) && defined(AO_HAVE_fetch_and_sub1) */
#if defined(AO_HAVE_store_release_write) && defined(AO_HAVE_load_acquire_read)
/* Invariant: counter1 >= counter2 */
AO_t counter1 = 0;
AO_t counter2 = 0;
void * acqrel_thr(void *id)
{
int me = (int)(AO_PTRDIFF_T)id;
int i;
for (i = 0; i < NITERS; ++i)
if (me & 1)
{
AO_t my_counter1;
if (me != 1)
fprintf(stderr, "acqrel test: too many threads\n");
my_counter1 = AO_load(&counter1);
AO_store(&counter1, my_counter1 + 1);
AO_store_release_write(&counter2, my_counter1 + 1);
}
else
{
AO_t my_counter1a, my_counter2a;
AO_t my_counter1b, my_counter2b;
my_counter2a = AO_load_acquire_read(&counter2);
my_counter1a = AO_load(&counter1);
/* Redo this, to make sure that the second load of counter1 */
/* is not viewed as a common subexpression. */
my_counter2b = AO_load_acquire_read(&counter2);
my_counter1b = AO_load(&counter1);
if (my_counter1a < my_counter2a)
{
fprintf(stderr, "Saw release store out of order: %lu < %lu\n",
(unsigned long)my_counter1a, (unsigned long)my_counter2a);
abort();
}
if (my_counter1b < my_counter2b)
{
fprintf(stderr,
"Saw release store out of order (bad CSE?): %lu < %lu\n",
(unsigned long)my_counter1b, (unsigned long)my_counter2b);
abort();
}
}
return 0;
}
int acqrel_test(void)
{
return counter1 == NITERS && counter2 == NITERS;
}
#endif /* AO_HAVE_store_release_write && AO_HAVE_load_acquire_read */
#if defined(AO_HAVE_test_and_set_acquire)
AO_TS_T lock = AO_TS_INITIALIZER;
unsigned long locked_counter;
volatile unsigned long junk = 13;
void * test_and_set_thr(void * id)
{
unsigned long i;
for (i = 0; i < NITERS/10; ++i)
{
while (AO_test_and_set_acquire(&lock) != AO_TS_CLEAR);
++locked_counter;
if (locked_counter != 1)
{
fprintf(stderr, "Test and set failure 1, counter = %ld\n",
locked_counter);
abort();
}
locked_counter *= 2;
locked_counter -= 1;
locked_counter *= 5;
locked_counter -= 4;
if (locked_counter != 1)
{
fprintf(stderr, "Test and set failure 2, counter = %ld\n",
locked_counter);
abort();
}
--locked_counter;
AO_CLEAR(&lock);
/* Spend a bit of time outside the lock. */
junk *= 17;
junk *= 17;
}
return 0;
}
int test_and_set_test(void)
{
return locked_counter == 0;
}
#endif /* defined(AO_HAVE_test_and_set_acquire) */
int main(void)
{
test_atomic();
test_atomic_acquire();
test_atomic_release();
test_atomic_read();
test_atomic_write();
test_atomic_full();
test_atomic_release_write();
test_atomic_acquire_read();
# if defined(AO_HAVE_fetch_and_add1) && defined(AO_HAVE_fetch_and_sub1)
run_parallel(4, add1sub1_thr, add1sub1_test, "add1/sub1");
# endif
# if defined(AO_HAVE_store_release_write) && defined(AO_HAVE_load_acquire_read)
run_parallel(3, acqrel_thr, acqrel_test,
"store_release_write/load_acquire_read");
# endif
# if defined(AO_HAVE_test_and_set_acquire)
run_parallel(5, test_and_set_thr, test_and_set_test,
"test_and_set");
# endif
return 0;
}
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