[urcu.git] / test_urcu.c

/*
 * test_urcu.c
 *
 * Userspace RCU library - test program
 *
 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#define _GNU_SOURCE
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#include <sys/syscall.h>
#include <sched.h>

#include "arch.h"

#if defined(_syscall0)
_syscall0(pid_t, gettid)
#elif defined(__NR_gettid)
static inline pid_t gettid(void)
{
	return syscall(__NR_gettid);
}
#else
#warning "use pid as tid"
static inline pid_t gettid(void)
{
	return getpid();
}
#endif

#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#else
#define debug_yield_read()
#endif
#include "urcu.h"

struct test_array {
	int a;
};

static volatile int test_go, test_stop;

static int wdelay;

static struct test_array *test_rcu_pointer;

static unsigned long duration;

/* read-side C.S. duration, in loops */
static unsigned long rduration;

static inline void loop_sleep(unsigned long l)
{
	while(l-- != 0)
		cpu_relax();
}

static int verbose_mode;

#define printf_verbose(fmt, args...)		\
	do {					\
		if (verbose_mode)		\
			printf(fmt, args);	\
	} while (0)

/*
 * returns 0 if test should end.
 */
static int test_duration_write(void)
{
	return !test_stop;
}

static int test_duration_read(void)
{
	return !test_stop;
}

static unsigned long long __thread nr_writes;
static unsigned long long __thread nr_reads;

static unsigned int nr_readers;
static unsigned int nr_writers;

pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;

void rcu_copy_mutex_lock(void)
{
	int ret;
	ret = pthread_mutex_lock(&rcu_copy_mutex);
	if (ret) {
		perror("Error in pthread mutex lock");
		exit(-1);
	}
}

void rcu_copy_mutex_unlock(void)
{
	int ret;

	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	if (ret) {
		perror("Error in pthread mutex unlock");
		exit(-1);
	}
}

/*
 * malloc/free are reusing memory areas too quickly, which does not let us
 * test races appropriately. Use a large circular array for allocations.
 * ARRAY_SIZE is larger than nr_writers, which insures we never run over our tail.
 */
#define ARRAY_SIZE (1048576 * nr_writers)
#define ARRAY_POISON 0xDEADBEEF
static int array_index;
static struct test_array *test_array;

static struct test_array *test_array_alloc(void)
{
	struct test_array *ret;
	int index;

	rcu_copy_mutex_lock();
	index = array_index % ARRAY_SIZE;
	assert(test_array[index].a == ARRAY_POISON ||
		test_array[index].a == 0);
	ret = &test_array[index];
	array_index++;
	if (array_index == ARRAY_SIZE)
		array_index = 0;
	rcu_copy_mutex_unlock();
	return ret;
}

static void test_array_free(struct test_array *ptr)
{
	if (!ptr)
		return;
	rcu_copy_mutex_lock();
	ptr->a = ARRAY_POISON;
	rcu_copy_mutex_unlock();
}

void *thr_reader(void *_count)
{
	unsigned long long *count = _count;
	struct test_array *local_ptr;

	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
			"reader", pthread_self(), (unsigned long)gettid());

	rcu_register_thread();

	while (!test_go)
	{
	}
	smp_mb();

	for (;;) {
		rcu_read_lock();
		local_ptr = rcu_dereference(test_rcu_pointer);
		debug_yield_read();
		if (local_ptr)
			assert(local_ptr->a == 8);
		if (unlikely(rduration))
			loop_sleep(rduration);
		rcu_read_unlock();
		nr_reads++;
		if (unlikely(!test_duration_read()))
			break;
	}

	rcu_unregister_thread();

	*count = nr_reads;
	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
			"reader", pthread_self(), (unsigned long)gettid());
	return ((void*)1);

}

void *thr_writer(void *_count)
{
	unsigned long long *count = _count;
	struct test_array *new, *old;

	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
			"writer", pthread_self(), (unsigned long)gettid());

	while (!test_go)
	{
	}
	smp_mb();

	for (;;) {
		new = test_array_alloc();
		rcu_copy_mutex_lock();
		old = test_rcu_pointer;
		if (old)
			assert(old->a == 8);
		new->a = 8;
		old = rcu_publish_content(&test_rcu_pointer, new);
		rcu_copy_mutex_unlock();
		/* can be done after unlock */
		if (old)
			old->a = 0;
		test_array_free(old);
		nr_writes++;
		if (unlikely(!test_duration_write()))
			break;
		if (unlikely(wdelay))
			usleep(wdelay);
	}

	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
			"writer", pthread_self(), (unsigned long)gettid());
	*count = nr_writes;
	return ((void*)2);
}

void show_usage(int argc, char **argv)
{
	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
#ifdef DEBUG_YIELD
	printf(" [-r] [-w] (yield reader and/or writer)");
#endif
	printf(" [-d delay] (writer period (us))");
	printf(" [-c duration] (reader C.S. duration (in loops))");
	printf(" [-v] (verbose output)");
	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	printf("\n");
}

cpu_set_t affinity;

int main(int argc, char **argv)
{
	int err;
	pthread_t *tid_reader, *tid_writer;
	void *tret;
	unsigned long long *count_reader, *count_writer;
	unsigned long long tot_reads = 0, tot_writes = 0;
	int i, a;
	int use_affinity = 0;

	if (argc < 4) {
		show_usage(argc, argv);
		return -1;
	}

	err = sscanf(argv[1], "%u", &nr_readers);
	if (err != 1) {
		show_usage(argc, argv);
		return -1;
	}

	err = sscanf(argv[2], "%u", &nr_writers);
	if (err != 1) {
		show_usage(argc, argv);
		return -1;
	}
	
	err = sscanf(argv[3], "%lu", &duration);
	if (err != 1) {
		show_usage(argc, argv);
		return -1;
	}

	CPU_ZERO(&affinity);

	for (i = 4; i < argc; i++) {
		if (argv[i][0] != '-')
			continue;
		switch (argv[i][1]) {
#ifdef DEBUG_YIELD
		case 'r':
			yield_active |= YIELD_READ;
			break;
		case 'w':
			yield_active |= YIELD_WRITE;
			break;
#endif
		case 'a':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			a = atoi(argv[++i]);
			CPU_SET(a, &affinity);
			use_affinity = 1;
			printf_verbose("Adding CPU %d affinity\n", a);
			break;
		case 'c':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			rduration = atoi(argv[++i]);
			break;
		case 'd':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			wdelay = atoi(argv[++i]);
			break;
		case 'v':
			verbose_mode = 1;
			break;
		}
	}

	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
		duration, nr_readers, nr_writers);
	printf_verbose("Writer delay : %u us.\n", wdelay);
	printf_verbose("Reader duration : %lu loops.\n", rduration);
	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
			"main", pthread_self(), (unsigned long)gettid());

	if (use_affinity
	    && sched_setaffinity(0, sizeof(affinity), &affinity) < 0) {
		perror("sched_setaffinity");
		exit(-1);
	}

	test_array = malloc(sizeof(*test_array) * ARRAY_SIZE);
	tid_reader = malloc(sizeof(*tid_reader) * nr_readers);
	tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
	count_reader = malloc(sizeof(*count_reader) * nr_readers);
	count_writer = malloc(sizeof(*count_writer) * nr_writers);

	for (i = 0; i < nr_readers; i++) {
		err = pthread_create(&tid_reader[i], NULL, thr_reader,
				     &count_reader[i]);
		if (err != 0)
			exit(1);
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_create(&tid_writer[i], NULL, thr_writer,
				     &count_writer[i]);
		if (err != 0)
			exit(1);
	}

	smp_mb();

	test_go = 1;

	sleep(duration);

	test_stop = 1;

	for (i = 0; i < nr_readers; i++) {
		err = pthread_join(tid_reader[i], &tret);
		if (err != 0)
			exit(1);
		tot_reads += count_reader[i];
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_join(tid_writer[i], &tret);
		if (err != 0)
			exit(1);
		tot_writes += count_writer[i];
	}
	
	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	       tot_writes);
	printf("SUMMARY %s testdur %lu nr_readers %u rdur %lu nr_writers %u "
		"wdelay %u nr_reads %llu nr_writes %llu nr_ops %llu\n",
		argv[0], duration, nr_readers, rduration,
		nr_writers, wdelay, tot_reads, tot_writes,
		tot_reads + tot_writes);
	test_array_free(test_rcu_pointer);
	free(test_array);
	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	return 0;
}
Commit	Line	Data
b257a10b MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
	7	*
af02d47e MD	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
b257a10b MD	21	*/
b257a10b MD	22
9e97e478	23	#define _GNU_SOURCE
ac260fd9	24	#include <stdio.h>
f69f195a MD	25	#include <pthread.h>
f69f195a MD	26	#include <stdlib.h>
41718ff9	27	#include <string.h>
f69f195a MD	28	#include <sys/types.h>
	29	#include <sys/wait.h>
	30	#include <unistd.h>
	31	#include <stdio.h>
41718ff9	32	#include <assert.h>
87bd15cd	33	#include <sys/syscall.h>
9e97e478	34	#include <sched.h>
87bd15cd	35
7685d963 MD	36	#include "arch.h"
7685d963 MD	37
87bd15cd BW	38	#if defined(_syscall0)
	39	_syscall0(pid_t, gettid)
	40	#elif defined(__NR_gettid)
	41	static inline pid_t gettid(void)
	42	{
	43	return syscall(__NR_gettid);
	44	}
	45	#else
	46	#warning "use pid as tid"
	47	static inline pid_t gettid(void)
	48	{
	49	return getpid();
	50	}
	51	#endif
	52
121a5d44 MD	53	#ifndef DYNAMIC_LINK_TEST
	54	#define _LGPL_SOURCE
	55	#else
	56	#define debug_yield_read()
	57	#endif
ac260fd9 MD	58	#include "urcu.h"
ac260fd9 MD	59
41718ff9 MD	60	struct test_array {
41718ff9 MD	61	int a;
41718ff9 MD	62	};
41718ff9 MD	63
78efb485	64	static volatile int test_go, test_stop;
8c86b9a1 MD	65
8c86b9a1 MD	66	static int wdelay;
bb488185	67
41718ff9 MD	68	static struct test_array *test_rcu_pointer;
41718ff9 MD	69
cf380c2f	70	static unsigned long duration;
cf380c2f	71
daddf5b0	72	/* read-side C.S. duration, in loops */
8b632bab MD	73	static unsigned long rduration;
8b632bab MD	74
daddf5b0 MD	75	static inline void loop_sleep(unsigned long l)
	76	{
	77	while(l-- != 0)
	78	cpu_relax();
	79	}
	80
4bad7d45 MD	81	static int verbose_mode;
	82
	83	#define printf_verbose(fmt, args...) \
	84	do { \
	85	if (verbose_mode) \
	86	printf(fmt, args); \
	87	} while (0)
	88
cf380c2f MD	89	/*
	90	* returns 0 if test should end.
	91	*/
5873cd17	92	static int test_duration_write(void)
cf380c2f	93	{
78efb485	94	return !test_stop;
5873cd17 MD	95	}
	96
	97	static int test_duration_read(void)
	98	{
78efb485	99	return !test_stop;
cf380c2f MD	100	}
cf380c2f MD	101
1eec319e MD	102	static unsigned long long __thread nr_writes;
	103	static unsigned long long __thread nr_reads;
	104
8c86b9a1 MD	105	static unsigned int nr_readers;
	106	static unsigned int nr_writers;
	107
c265818b MD	108	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	109
	110	void rcu_copy_mutex_lock(void)
	111	{
	112	int ret;
	113	ret = pthread_mutex_lock(&rcu_copy_mutex);
	114	if (ret) {
	115	perror("Error in pthread mutex lock");
	116	exit(-1);
	117	}
	118	}
	119
	120	void rcu_copy_mutex_unlock(void)
	121	{
	122	int ret;
	123
	124	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	125	if (ret) {
	126	perror("Error in pthread mutex unlock");
	127	exit(-1);
	128	}
	129	}
f69f195a	130
bb488185 MD	131	/*
	132	* malloc/free are reusing memory areas too quickly, which does not let us
	133	* test races appropriately. Use a large circular array for allocations.
8c86b9a1	134	* ARRAY_SIZE is larger than nr_writers, which insures we never run over our tail.
bb488185	135	*/
8c86b9a1	136	#define ARRAY_SIZE (1048576 * nr_writers)
bb488185 MD	137	#define ARRAY_POISON 0xDEADBEEF
bb488185 MD	138	static int array_index;
8c86b9a1	139	static struct test_array *test_array;
bb488185 MD	140
	141	static struct test_array *test_array_alloc(void)
	142	{
	143	struct test_array *ret;
	144	int index;
	145
	146	rcu_copy_mutex_lock();
	147	index = array_index % ARRAY_SIZE;
	148	assert(test_array[index].a == ARRAY_POISON \|\|
	149	test_array[index].a == 0);
	150	ret = &test_array[index];
	151	array_index++;
	152	if (array_index == ARRAY_SIZE)
	153	array_index = 0;
	154	rcu_copy_mutex_unlock();
	155	return ret;
	156	}
	157
	158	static void test_array_free(struct test_array *ptr)
	159	{
	160	if (!ptr)
	161	return;
	162	rcu_copy_mutex_lock();
	163	ptr->a = ARRAY_POISON;
	164	rcu_copy_mutex_unlock();
	165	}
	166
1eec319e	167	void thr_reader(void _count)
f69f195a	168	{
1eec319e	169	unsigned long long *count = _count;
41718ff9 MD	170	struct test_array *local_ptr;
41718ff9 MD	171
4bad7d45	172	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
87bd15cd	173	"reader", pthread_self(), (unsigned long)gettid());
f69f195a	174
121a5d44	175	rcu_register_thread();
f69f195a	176
8c86b9a1 MD	177	while (!test_go)
	178	{
	179	}
7685d963	180	smp_mb();
8c86b9a1	181
cf380c2f	182	for (;;) {
1430ee0b	183	rcu_read_lock();
cf380c2f	184	local_ptr = rcu_dereference(test_rcu_pointer);
bb488185	185	debug_yield_read();
cf380c2f MD	186	if (local_ptr)
cf380c2f MD	187	assert(local_ptr->a == 8);
8b632bab	188	if (unlikely(rduration))
daddf5b0	189	loop_sleep(rduration);
1430ee0b	190	rcu_read_unlock();
1eec319e	191	nr_reads++;
59d5a406	192	if (unlikely(!test_duration_read()))
cf380c2f	193	break;
41718ff9	194	}
f69f195a	195
121a5d44	196	rcu_unregister_thread();
41718ff9	197
1eec319e	198	*count = nr_reads;
4bad7d45	199	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
cf380c2f	200	"reader", pthread_self(), (unsigned long)gettid());
f69f195a MD	201	return ((void*)1);
	202
	203	}
	204
1eec319e	205	void thr_writer(void _count)
f69f195a	206	{
1eec319e	207	unsigned long long *count = _count;
41718ff9	208	struct test_array new, old;
f69f195a	209
4bad7d45	210	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
87bd15cd	211	"writer", pthread_self(), (unsigned long)gettid());
f69f195a	212
8c86b9a1 MD	213	while (!test_go)
	214	{
	215	}
7685d963	216	smp_mb();
8c86b9a1	217
cf380c2f	218	for (;;) {
bb488185	219	new = test_array_alloc();
c265818b	220	rcu_copy_mutex_lock();
41718ff9	221	old = test_rcu_pointer;
cf380c2f	222	if (old)
41718ff9	223	assert(old->a == 8);
ad6ce6ae	224	new->a = 8;
121a5d44	225	old = rcu_publish_content(&test_rcu_pointer, new);
c265818b	226	rcu_copy_mutex_unlock();
41718ff9	227	/* can be done after unlock */
cf380c2f	228	if (old)
8c8eed97	229	old->a = 0;
bb488185	230	test_array_free(old);
1eec319e	231	nr_writes++;
59d5a406	232	if (unlikely(!test_duration_write()))
cf380c2f	233	break;
59d5a406	234	if (unlikely(wdelay))
8c86b9a1	235	usleep(wdelay);
f69f195a MD	236	}
f69f195a MD	237
4bad7d45	238	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
cf380c2f	239	"writer", pthread_self(), (unsigned long)gettid());
1eec319e	240	*count = nr_writes;
f69f195a MD	241	return ((void*)2);
f69f195a MD	242	}
ac260fd9	243
1430ee0b MD	244	void show_usage(int argc, char **argv)
1430ee0b MD	245	{
8c86b9a1	246	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
1430ee0b MD	247	#ifdef DEBUG_YIELD
	248	printf(" [-r] [-w] (yield reader and/or writer)");
	249	#endif
7685d963	250	printf(" [-d delay] (writer period (us))");
daddf5b0	251	printf(" [-c duration] (reader C.S. duration (in loops))");
4bad7d45	252	printf(" [-v] (verbose output)");
9e97e478	253	printf(" [-a cpu#] [-a cpu#]... (affinity)");
1430ee0b MD	254	printf("\n");
	255	}
	256
9e97e478 MD	257	cpu_set_t affinity;
9e97e478 MD	258
cf380c2f	259	int main(int argc, char **argv)
ac260fd9	260	{
f69f195a	261	int err;
8c86b9a1	262	pthread_t tid_reader, tid_writer;
f69f195a	263	void *tret;
8c86b9a1	264	unsigned long long count_reader, count_writer;
1eec319e	265	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478 MD	266	int i, a;
9e97e478 MD	267	int use_affinity = 0;
f69f195a	268
8c86b9a1 MD	269	if (argc < 4) {
	270	show_usage(argc, argv);
	271	return -1;
	272	}
	273
	274	err = sscanf(argv[1], "%u", &nr_readers);
	275	if (err != 1) {
1430ee0b	276	show_usage(argc, argv);
cf380c2f MD	277	return -1;
	278	}
	279
8c86b9a1 MD	280	err = sscanf(argv[2], "%u", &nr_writers);
	281	if (err != 1) {
	282	show_usage(argc, argv);
	283	return -1;
	284	}
	285
	286	err = sscanf(argv[3], "%lu", &duration);
cf380c2f	287	if (err != 1) {
1430ee0b	288	show_usage(argc, argv);
cf380c2f MD	289	return -1;
	290	}
	291
9e97e478 MD	292	CPU_ZERO(&affinity);
9e97e478 MD	293
8c86b9a1	294	for (i = 4; i < argc; i++) {
cf380c2f MD	295	if (argv[i][0] != '-')
	296	continue;
	297	switch (argv[i][1]) {
bb488185	298	#ifdef DEBUG_YIELD
cf380c2f MD	299	case 'r':
	300	yield_active \|= YIELD_READ;
	301	break;
	302	case 'w':
	303	yield_active \|= YIELD_WRITE;
	304	break;
bb488185	305	#endif
9e97e478 MD	306	case 'a':
	307	if (argc < i + 2) {
	308	show_usage(argc, argv);
	309	return -1;
	310	}
	311	a = atoi(argv[++i]);
	312	CPU_SET(a, &affinity);
	313	use_affinity = 1;
4bad7d45	314	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	315	break;
8b632bab MD	316	case 'c':
	317	if (argc < i + 2) {
	318	show_usage(argc, argv);
	319	return -1;
	320	}
	321	rduration = atoi(argv[++i]);
	322	break;
8c86b9a1	323	case 'd':
7685d963	324	if (argc < i + 2) {
8c86b9a1 MD	325	show_usage(argc, argv);
	326	return -1;
	327	}
	328	wdelay = atoi(argv[++i]);
bb488185	329	break;
4bad7d45 MD	330	case 'v':
	331	verbose_mode = 1;
	332	break;
cf380c2f MD	333	}
cf380c2f MD	334	}
cf380c2f	335
4bad7d45	336	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
8c86b9a1	337	duration, nr_readers, nr_writers);
4bad7d45 MD	338	printf_verbose("Writer delay : %u us.\n", wdelay);
	339	printf_verbose("Reader duration : %lu loops.\n", rduration);
	340	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
87bd15cd BW	341	"main", pthread_self(), (unsigned long)gettid());
87bd15cd BW	342
9e97e478 MD	343	if (use_affinity
	344	&& sched_setaffinity(0, sizeof(affinity), &affinity) < 0) {
	345	perror("sched_setaffinity");
	346	exit(-1);
	347	}
	348
8c86b9a1 MD	349	test_array = malloc(sizeof(test_array) ARRAY_SIZE);
	350	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	351	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	352	count_reader = malloc(sizeof(count_reader) nr_readers);
	353	count_writer = malloc(sizeof(count_writer) nr_writers);
	354
	355	for (i = 0; i < nr_readers; i++) {
1eec319e MD	356	err = pthread_create(&tid_reader[i], NULL, thr_reader,
1eec319e MD	357	&count_reader[i]);
f69f195a MD	358	if (err != 0)
	359	exit(1);
	360	}
8c86b9a1	361	for (i = 0; i < nr_writers; i++) {
1eec319e MD	362	err = pthread_create(&tid_writer[i], NULL, thr_writer,
1eec319e MD	363	&count_writer[i]);
f69f195a MD	364	if (err != 0)
	365	exit(1);
	366	}
	367
7685d963	368	smp_mb();
8c86b9a1	369
78efb485 MD	370	test_go = 1;
	371
	372	sleep(duration);
	373
	374	test_stop = 1;
	375
8c86b9a1	376	for (i = 0; i < nr_readers; i++) {
f69f195a MD	377	err = pthread_join(tid_reader[i], &tret);
	378	if (err != 0)
	379	exit(1);
1eec319e	380	tot_reads += count_reader[i];
f69f195a	381	}
8c86b9a1	382	for (i = 0; i < nr_writers; i++) {
f69f195a MD	383	err = pthread_join(tid_writer[i], &tret);
	384	if (err != 0)
	385	exit(1);
1eec319e	386	tot_writes += count_writer[i];
f69f195a	387	}
5873cd17	388
4bad7d45	389	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
1eec319e	390	tot_writes);
4bad7d45 MD	391	printf("SUMMARY %s testdur %lu nr_readers %u rdur %lu nr_writers %u "
	392	"wdelay %u nr_reads %llu nr_writes %llu nr_ops %llu\n",
	393	argv[0], duration, nr_readers, rduration,
	394	nr_writers, wdelay, tot_reads, tot_writes,
	395	tot_reads + tot_writes);
bb488185	396	test_array_free(test_rcu_pointer);
8c86b9a1 MD	397	free(test_array);
	398	free(tid_reader);
	399	free(tid_writer);
	400	free(count_reader);
	401	free(count_writer);
f69f195a	402	return 0;
ac260fd9	403	}