[urcu.git] / tests / test_rwlock.c

/*
 * test_urcu.c
 *
 * Userspace RCU library - test program
 *
 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * 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 "../config.h"
#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 <sched.h>
#include <errno.h>

#include <urcu/arch.h>

#ifdef __linux__
#include <syscall.h>
#endif

/* hardcoded number of CPUs */
#define NR_CPUS 16384

#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;
};

pthread_rwlock_t lock = PTHREAD_RWLOCK_INITIALIZER;

static volatile int test_go, test_stop;

static unsigned long wdelay;

static volatile struct test_array test_array = { 8 };

static unsigned long duration;

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

/* write-side C.S. duration, in loops */
static unsigned long wduration;

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

static int verbose_mode;

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

static unsigned int cpu_affinities[NR_CPUS];
static unsigned int next_aff = 0;
static int use_affinity = 0;

pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;

#ifndef HAVE_CPU_SET_T
typedef unsigned long cpu_set_t;
# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
# define CPU_SET(cpu, cpuset) do { *(cpuset) |= (1UL << (cpu)); } while(0)
#endif

static void set_affinity(void)
{
	cpu_set_t mask;
	int cpu;
	int ret;

	if (!use_affinity)
		return;

#if HAVE_SCHED_SETAFFINITY
	ret = pthread_mutex_lock(&affinity_mutex);
	if (ret) {
		perror("Error in pthread mutex lock");
		exit(-1);
	}
	cpu = cpu_affinities[next_aff++];
	ret = pthread_mutex_unlock(&affinity_mutex);
	if (ret) {
		perror("Error in pthread mutex unlock");
		exit(-1);
	}

	CPU_ZERO(&mask);
	CPU_SET(cpu, &mask);
#if SCHED_SETAFFINITY_ARGS == 2
	sched_setaffinity(0, &mask);
#else
	sched_setaffinity(0, sizeof(mask), &mask);
#endif
#endif /* HAVE_SCHED_SETAFFINITY */
}

/*
 * 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);
	}
}

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

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

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		pthread_rwlock_rdlock(&lock);
		assert(test_array.a == 8);
		if (unlikely(rduration))
			loop_sleep(rduration);
		pthread_rwlock_unlock(&lock);
		nr_reads++;
		if (unlikely(!test_duration_read()))
			break;
	}

	*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;

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		pthread_rwlock_wrlock(&lock);
		test_array.a = 0;
		test_array.a = 8;
		if (unlikely(wduration))
			loop_sleep(wduration);
		pthread_rwlock_unlock(&lock);
		nr_writes++;
		if (unlikely(!test_duration_write()))
			break;
		if (unlikely(wdelay))
			loop_sleep(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(" [-e duration] (writer C.S. duration (in loops))");
	printf(" [-v] (verbose output)");
	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	printf("\n");
}

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;

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

	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;
	}

	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_affinities[next_aff++] = a;
			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 = atol(argv[++i]);
			break;
		case 'd':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			wdelay = atol(argv[++i]);
			break;
		case 'e':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			wduration = atol(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 : %lu loops.\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());

	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);

	next_aff = 0;

	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);
	}

	cmm_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 %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
		"nr_writers %3u "
		"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
		argv[0], duration, nr_readers, rduration, wduration,
		nr_writers, wdelay, tot_reads, tot_writes,
		tot_reads + tot_writes);

	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	return 0;
}
Commit	Line	Data
10c48e14 MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10c48e14 MD	7	*
	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.
	21	*/
	22
9e97e478	23	#define _GNU_SOURCE
d8540fc5	24	#include "../config.h"
10c48e14 MD	25	#include <stdio.h>
	26	#include <pthread.h>
	27	#include <stdlib.h>
	28	#include <string.h>
	29	#include <sys/types.h>
	30	#include <sys/wait.h>
	31	#include <unistd.h>
	32	#include <stdio.h>
	33	#include <assert.h>
9e97e478	34	#include <sched.h>
94b343fd	35	#include <errno.h>
10c48e14	36
ec4e58a3	37	#include <urcu/arch.h>
7685d963	38
65fcc7e9 MD	39	#ifdef __linux__
	40	#include <syscall.h>
	41	#endif
	42
2a7ac59d MD	43	/* hardcoded number of CPUs */
	44	#define NR_CPUS 16384
	45
10c48e14 MD	46	#if defined(_syscall0)
	47	_syscall0(pid_t, gettid)
	48	#elif defined(__NR_gettid)
	49	static inline pid_t gettid(void)
	50	{
	51	return syscall(__NR_gettid);
	52	}
	53	#else
	54	#warning "use pid as tid"
	55	static inline pid_t gettid(void)
	56	{
	57	return getpid();
	58	}
	59	#endif
	60
	61	#ifndef DYNAMIC_LINK_TEST
	62	#define _LGPL_SOURCE
	63	#else
	64	#define debug_yield_read()
	65	#endif
ec4e58a3	66	#include <urcu.h>
10c48e14 MD	67
	68	struct test_array {
	69	int a;
	70	};
	71
	72	pthread_rwlock_t lock = PTHREAD_RWLOCK_INITIALIZER;
	73
78efb485	74	static volatile int test_go, test_stop;
10c48e14	75
9e31d0f0	76	static unsigned long wdelay;
10c48e14	77
2b4e4125	78	static volatile struct test_array test_array = { 8 };
10c48e14 MD	79
10c48e14 MD	80	static unsigned long duration;
10c48e14	81
daddf5b0	82	/* read-side C.S. duration, in loops */
8b632bab MD	83	static unsigned long rduration;
8b632bab MD	84
31b598e0 MD	85	/* write-side C.S. duration, in loops */
	86	static unsigned long wduration;
	87
daddf5b0 MD	88	static inline void loop_sleep(unsigned long l)
	89	{
	90	while(l-- != 0)
06f22bdb	91	caa_cpu_relax();
daddf5b0 MD	92	}
daddf5b0 MD	93
4bad7d45 MD	94	static int verbose_mode;
	95
	96	#define printf_verbose(fmt, args...) \
	97	do { \
	98	if (verbose_mode) \
	99	printf(fmt, args); \
	100	} while (0)
	101
2a7ac59d MD	102	static unsigned int cpu_affinities[NR_CPUS];
	103	static unsigned int next_aff = 0;
	104	static int use_affinity = 0;
	105
6af882ba MD	106	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	107
d8540fc5 PA	108	#ifndef HAVE_CPU_SET_T
	109	typedef unsigned long cpu_set_t;
	110	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	111	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	112	#endif
	113
2a7ac59d MD	114	static void set_affinity(void)
	115	{
	116	cpu_set_t mask;
	117	int cpu;
6af882ba	118	int ret;
2a7ac59d MD	119
	120	if (!use_affinity)
	121	return;
	122
d8540fc5	123	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	124	ret = pthread_mutex_lock(&affinity_mutex);
	125	if (ret) {
	126	perror("Error in pthread mutex lock");
	127	exit(-1);
	128	}
2a7ac59d	129	cpu = cpu_affinities[next_aff++];
6af882ba MD	130	ret = pthread_mutex_unlock(&affinity_mutex);
	131	if (ret) {
	132	perror("Error in pthread mutex unlock");
	133	exit(-1);
	134	}
d8540fc5	135
2a7ac59d MD	136	CPU_ZERO(&mask);
2a7ac59d MD	137	CPU_SET(cpu, &mask);
d8540fc5 PA	138	#if SCHED_SETAFFINITY_ARGS == 2
	139	sched_setaffinity(0, &mask);
	140	#else
2a7ac59d	141	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	142	#endif
d8540fc5 PA	143	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	144	}
2a7ac59d MD	145
10c48e14 MD	146	/*
	147	* returns 0 if test should end.
	148	*/
	149	static int test_duration_write(void)
	150	{
78efb485	151	return !test_stop;
10c48e14 MD	152	}
	153
	154	static int test_duration_read(void)
	155	{
78efb485	156	return !test_stop;
10c48e14 MD	157	}
	158
	159	static unsigned long long __thread nr_writes;
	160	static unsigned long long __thread nr_reads;
	161
	162	static unsigned int nr_readers;
	163	static unsigned int nr_writers;
	164
	165	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	166
	167	void rcu_copy_mutex_lock(void)
	168	{
	169	int ret;
	170	ret = pthread_mutex_lock(&rcu_copy_mutex);
	171	if (ret) {
	172	perror("Error in pthread mutex lock");
	173	exit(-1);
	174	}
	175	}
	176
	177	void rcu_copy_mutex_unlock(void)
	178	{
	179	int ret;
	180
	181	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	182	if (ret) {
	183	perror("Error in pthread mutex unlock");
	184	exit(-1);
	185	}
	186	}
	187
	188	void thr_reader(void _count)
	189	{
	190	unsigned long long *count = _count;
	191
4bad7d45	192	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
10c48e14 MD	193	"reader", pthread_self(), (unsigned long)gettid());
10c48e14 MD	194
2a7ac59d MD	195	set_affinity();
2a7ac59d MD	196
10c48e14 MD	197	while (!test_go)
	198	{
	199	}
	200
	201	for (;;) {
	202	pthread_rwlock_rdlock(&lock);
	203	assert(test_array.a == 8);
8b632bab	204	if (unlikely(rduration))
daddf5b0	205	loop_sleep(rduration);
10c48e14 MD	206	pthread_rwlock_unlock(&lock);
10c48e14 MD	207	nr_reads++;
59d5a406	208	if (unlikely(!test_duration_read()))
10c48e14 MD	209	break;
	210	}
	211
	212	*count = nr_reads;
4bad7d45	213	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
10c48e14 MD	214	"reader", pthread_self(), (unsigned long)gettid());
	215	return ((void*)1);
	216
	217	}
	218
	219	void thr_writer(void _count)
	220	{
	221	unsigned long long *count = _count;
	222
4bad7d45	223	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
10c48e14 MD	224	"writer", pthread_self(), (unsigned long)gettid());
10c48e14 MD	225
2a7ac59d MD	226	set_affinity();
2a7ac59d MD	227
10c48e14 MD	228	while (!test_go)
	229	{
	230	}
5481ddb3	231	cmm_smp_mb();
10c48e14 MD	232
	233	for (;;) {
	234	pthread_rwlock_wrlock(&lock);
2b4e4125	235	test_array.a = 0;
10c48e14	236	test_array.a = 8;
31b598e0 MD	237	if (unlikely(wduration))
31b598e0 MD	238	loop_sleep(wduration);
10c48e14 MD	239	pthread_rwlock_unlock(&lock);
10c48e14 MD	240	nr_writes++;
59d5a406	241	if (unlikely(!test_duration_write()))
10c48e14	242	break;
59d5a406	243	if (unlikely(wdelay))
9e31d0f0	244	loop_sleep(wdelay);
10c48e14 MD	245	}
10c48e14 MD	246
4bad7d45	247	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
10c48e14 MD	248	"writer", pthread_self(), (unsigned long)gettid());
	249	*count = nr_writes;
	250	return ((void*)2);
	251	}
	252
	253	void show_usage(int argc, char **argv)
	254	{
	255	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	256	#ifdef DEBUG_YIELD
	257	printf(" [-r] [-w] (yield reader and/or writer)");
	258	#endif
7685d963	259	printf(" [-d delay] (writer period (us))");
daddf5b0	260	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	261	printf(" [-e duration] (writer C.S. duration (in loops))");
4bad7d45	262	printf(" [-v] (verbose output)");
9e97e478	263	printf(" [-a cpu#] [-a cpu#]... (affinity)");
10c48e14 MD	264	printf("\n");
	265	}
	266
	267	int main(int argc, char **argv)
	268	{
	269	int err;
	270	pthread_t tid_reader, tid_writer;
	271	void *tret;
	272	unsigned long long count_reader, count_writer;
	273	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	274	int i, a;
10c48e14 MD	275
	276	if (argc < 4) {
	277	show_usage(argc, argv);
	278	return -1;
	279	}
5481ddb3	280	cmm_smp_mb();
10c48e14 MD	281
	282	err = sscanf(argv[1], "%u", &nr_readers);
	283	if (err != 1) {
	284	show_usage(argc, argv);
	285	return -1;
	286	}
	287
	288	err = sscanf(argv[2], "%u", &nr_writers);
	289	if (err != 1) {
	290	show_usage(argc, argv);
	291	return -1;
	292	}
	293
	294	err = sscanf(argv[3], "%lu", &duration);
	295	if (err != 1) {
	296	show_usage(argc, argv);
	297	return -1;
	298	}
	299
	300	for (i = 4; i < argc; i++) {
	301	if (argv[i][0] != '-')
	302	continue;
	303	switch (argv[i][1]) {
	304	#ifdef DEBUG_YIELD
	305	case 'r':
	306	yield_active \|= YIELD_READ;
	307	break;
	308	case 'w':
	309	yield_active \|= YIELD_WRITE;
	310	break;
	311	#endif
9e97e478 MD	312	case 'a':
	313	if (argc < i + 2) {
	314	show_usage(argc, argv);
	315	return -1;
	316	}
	317	a = atoi(argv[++i]);
2a7ac59d	318	cpu_affinities[next_aff++] = a;
9e97e478	319	use_affinity = 1;
4bad7d45	320	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	321	break;
8b632bab MD	322	case 'c':
	323	if (argc < i + 2) {
	324	show_usage(argc, argv);
	325	return -1;
	326	}
9e31d0f0	327	rduration = atol(argv[++i]);
8b632bab	328	break;
10c48e14 MD	329	case 'd':
	330	if (argc < i + 2) {
	331	show_usage(argc, argv);
	332	return -1;
	333	}
9e31d0f0	334	wdelay = atol(argv[++i]);
10c48e14	335	break;
31b598e0 MD	336	case 'e':
	337	if (argc < i + 2) {
	338	show_usage(argc, argv);
	339	return -1;
	340	}
	341	wduration = atol(argv[++i]);
	342	break;
4bad7d45 MD	343	case 'v':
	344	verbose_mode = 1;
	345	break;
10c48e14 MD	346	}
	347	}
	348
4bad7d45	349	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
10c48e14	350	duration, nr_readers, nr_writers);
9e31d0f0	351	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	352	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	353	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
10c48e14 MD	354	"main", pthread_self(), (unsigned long)gettid());
	355
	356	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	357	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	358	count_reader = malloc(sizeof(count_reader) nr_readers);
	359	count_writer = malloc(sizeof(count_writer) nr_writers);
	360
2a7ac59d MD	361	next_aff = 0;
2a7ac59d MD	362
10c48e14 MD	363	for (i = 0; i < nr_readers; i++) {
	364	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	365	&count_reader[i]);
	366	if (err != 0)
	367	exit(1);
	368	}
	369	for (i = 0; i < nr_writers; i++) {
	370	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	371	&count_writer[i]);
	372	if (err != 0)
	373	exit(1);
	374	}
	375
5481ddb3	376	cmm_smp_mb();
10c48e14	377
78efb485 MD	378	test_go = 1;
	379
	380	sleep(duration);
	381
	382	test_stop = 1;
	383
10c48e14 MD	384	for (i = 0; i < nr_readers; i++) {
	385	err = pthread_join(tid_reader[i], &tret);
	386	if (err != 0)
	387	exit(1);
	388	tot_reads += count_reader[i];
	389	}
	390	for (i = 0; i < nr_writers; i++) {
	391	err = pthread_join(tid_writer[i], &tret);
	392	if (err != 0)
	393	exit(1);
	394	tot_writes += count_writer[i];
	395	}
4bad7d45 MD	396
4bad7d45 MD	397	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
10c48e14	398	tot_writes);
a50a7b43	399	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	400	"nr_writers %3u "
9e31d0f0	401	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	402	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	403	nr_writers, wdelay, tot_reads, tot_writes,
	404	tot_reads + tot_writes);
	405
10c48e14 MD	406	free(tid_reader);
	407	free(tid_writer);
	408	free(count_reader);
	409	free(count_writer);
	410	return 0;
	411	}