[urcu.git] / tests / benchmark / test_mutex.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 <errno.h>

#include <urcu/arch.h>
#include <urcu/tls-compat.h>
#include "cpuset.h"
#include "thread-id.h"

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

#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#endif
#include <urcu.h>

struct test_array {
	int a;
};

static pthread_mutex_t lock = PTHREAD_MUTEX_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 loops)
{
	while (loops-- != 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;

static void set_affinity(void)
{
#if HAVE_SCHED_SETAFFINITY
	cpu_set_t mask;
	int cpu, ret;
#endif /* HAVE_SCHED_SETAFFINITY */

	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 DEFINE_URCU_TLS(unsigned long long, nr_writes);
static DEFINE_URCU_TLS(unsigned long long, nr_reads);

static
unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
static
unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_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 *data)
{
	unsigned long tidx = (unsigned long)data;

	printf_verbose("thread_begin %s, tid %lu\n",
			"reader", urcu_get_thread_id());

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		pthread_mutex_lock(&lock);
		assert(test_array.a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		pthread_mutex_unlock(&lock);
		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
	printf_verbose("thread_end %s, tid %lu\n",
			"reader", urcu_get_thread_id());
	return ((void*)1);

}

void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;

	printf_verbose("thread_begin %s, tid %lu\n",
			"writer", urcu_get_thread_id());

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		pthread_mutex_lock(&lock);
		test_array.a = 0;
		test_array.a = 8;
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		pthread_mutex_unlock(&lock);
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	printf_verbose("thread_end %s, tid %lu\n",
			"writer", urcu_get_thread_id());
	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
	return ((void*)2);
}

void show_usage(int argc, char **argv)
{
	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
		argv[0]);
	printf("OPTIONS:\n");
	printf("	[-d delay] (writer period (us))\n");
	printf("	[-c duration] (reader C.S. duration (in loops))\n");
	printf("	[-e duration] (writer C.S. duration (in loops))\n");
	printf("	[-v] (verbose output)\n");
	printf("	[-a cpu#] [-a cpu#]... (affinity)\n");
	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]) {
		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, tid %lu\n",
			"main", urcu_get_thread_id());

	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	count_reader = calloc(nr_readers, sizeof(*count_reader));
	count_writer = calloc(nr_writers, sizeof(*count_writer));
	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));

	next_aff = 0;

	for (i = 0; i < nr_readers; i++) {
		err = pthread_create(&tid_reader[i], NULL, thr_reader,
				     (void *)(long)i);
		if (err != 0)
			exit(1);
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_create(&tid_writer[i], NULL, thr_writer,
				     (void *)(long)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 += tot_nr_reads[i];
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_join(tid_writer[i], &tret);
		if (err != 0)
			exit(1);
		tot_writes += tot_nr_writes[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);
	free(tot_nr_reads);
	free(tot_nr_writes);
	return 0;
}
Commit	Line	Data
51299083 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>
51299083 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
	23	#define _GNU_SOURCE
f5ab766e	24	#include "config.h"
51299083 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>
94b343fd	34	#include <errno.h>
51299083	35
ec4e58a3	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
2953b501	38	#include "cpuset.h"
94df6318	39	#include "thread-id.h"
65fcc7e9	40
2a7ac59d MD	41	/* hardcoded number of CPUs */
	42	#define NR_CPUS 16384
	43
51299083 MD	44	#ifndef DYNAMIC_LINK_TEST
51299083 MD	45	#define _LGPL_SOURCE
51299083	46	#endif
ec4e58a3	47	#include <urcu.h>
51299083 MD	48
	49	struct test_array {
	50	int a;
	51	};
	52
f61dfd97	53	static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
51299083 MD	54
	55	static volatile int test_go, test_stop;
	56
9e31d0f0	57	static unsigned long wdelay;
51299083 MD	58
	59	static volatile struct test_array test_array = { 8 };
	60
	61	static unsigned long duration;
	62
daddf5b0	63	/* read-side C.S. duration, in loops */
8b632bab MD	64	static unsigned long rduration;
8b632bab MD	65
31b598e0 MD	66	/* write-side C.S. duration, in loops */
	67	static unsigned long wduration;
	68
ab0aacbe	69	static inline void loop_sleep(unsigned long loops)
daddf5b0	70	{
ab0aacbe	71	while (loops-- != 0)
06f22bdb	72	caa_cpu_relax();
daddf5b0 MD	73	}
daddf5b0 MD	74
4bad7d45 MD	75	static int verbose_mode;
	76
	77	#define printf_verbose(fmt, args...) \
	78	do { \
	79	if (verbose_mode) \
	80	printf(fmt, args); \
	81	} while (0)
	82
2a7ac59d MD	83	static unsigned int cpu_affinities[NR_CPUS];
	84	static unsigned int next_aff = 0;
	85	static int use_affinity = 0;
	86
6af882ba MD	87	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	88
2a7ac59d MD	89	static void set_affinity(void)
2a7ac59d MD	90	{
95bc7fb9	91	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	92	cpu_set_t mask;
95bc7fb9 MD	93	int cpu, ret;
95bc7fb9 MD	94	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	95
	96	if (!use_affinity)
	97	return;
	98
d8540fc5	99	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	100	ret = pthread_mutex_lock(&affinity_mutex);
	101	if (ret) {
	102	perror("Error in pthread mutex lock");
	103	exit(-1);
	104	}
2a7ac59d	105	cpu = cpu_affinities[next_aff++];
6af882ba MD	106	ret = pthread_mutex_unlock(&affinity_mutex);
	107	if (ret) {
	108	perror("Error in pthread mutex unlock");
	109	exit(-1);
	110	}
2a7ac59d MD	111	CPU_ZERO(&mask);
2a7ac59d MD	112	CPU_SET(cpu, &mask);
d8540fc5 PA	113	#if SCHED_SETAFFINITY_ARGS == 2
	114	sched_setaffinity(0, &mask);
	115	#else
2a7ac59d	116	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	117	#endif
d8540fc5 PA	118	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	119	}
2a7ac59d MD	120
51299083 MD	121	/*
	122	* returns 0 if test should end.
	123	*/
	124	static int test_duration_write(void)
	125	{
	126	return !test_stop;
	127	}
	128
	129	static int test_duration_read(void)
	130	{
	131	return !test_stop;
	132	}
	133
bd252a04 MD	134	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	135	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
51299083	136
55271c13	137	static
06f22bdb	138	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	139	static
06f22bdb	140	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
51299083 MD	141
	142	static unsigned int nr_readers;
	143	static unsigned int nr_writers;
	144
	145	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	146
	147	void rcu_copy_mutex_lock(void)
	148	{
	149	int ret;
	150	ret = pthread_mutex_lock(&rcu_copy_mutex);
	151	if (ret) {
	152	perror("Error in pthread mutex lock");
	153	exit(-1);
	154	}
	155	}
	156
	157	void rcu_copy_mutex_unlock(void)
	158	{
	159	int ret;
	160
	161	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	162	if (ret) {
	163	perror("Error in pthread mutex unlock");
	164	exit(-1);
	165	}
	166	}
	167
	168	void thr_reader(void data)
	169	{
	170	unsigned long tidx = (unsigned long)data;
	171
94df6318 MD	172	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	173	"reader", urcu_get_thread_id());
51299083	174
2a7ac59d MD	175	set_affinity();
2a7ac59d MD	176
51299083 MD	177	while (!test_go)
	178	{
	179	}
	180
	181	for (;;) {
	182	pthread_mutex_lock(&lock);
	183	assert(test_array.a == 8);
a0b7f7ea	184	if (caa_unlikely(rduration))
daddf5b0	185	loop_sleep(rduration);
51299083	186	pthread_mutex_unlock(&lock);
bd252a04	187	URCU_TLS(nr_reads)++;
a0b7f7ea	188	if (caa_unlikely(!test_duration_read()))
51299083 MD	189	break;
	190	}
	191
bd252a04	192	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
94df6318 MD	193	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	194	"reader", urcu_get_thread_id());
51299083 MD	195	return ((void*)1);
	196
	197	}
	198
	199	void thr_writer(void data)
	200	{
	201	unsigned long wtidx = (unsigned long)data;
	202
94df6318 MD	203	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	204	"writer", urcu_get_thread_id());
51299083	205
2a7ac59d MD	206	set_affinity();
2a7ac59d MD	207
51299083 MD	208	while (!test_go)
	209	{
	210	}
5481ddb3	211	cmm_smp_mb();
51299083 MD	212
	213	for (;;) {
	214	pthread_mutex_lock(&lock);
	215	test_array.a = 0;
	216	test_array.a = 8;
a0b7f7ea	217	if (caa_unlikely(wduration))
31b598e0	218	loop_sleep(wduration);
51299083	219	pthread_mutex_unlock(&lock);
bd252a04	220	URCU_TLS(nr_writes)++;
a0b7f7ea	221	if (caa_unlikely(!test_duration_write()))
51299083	222	break;
a0b7f7ea	223	if (caa_unlikely(wdelay))
9e31d0f0	224	loop_sleep(wdelay);
51299083 MD	225	}
51299083 MD	226
94df6318 MD	227	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	228	"writer", urcu_get_thread_id());
bd252a04	229	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
51299083 MD	230	return ((void*)2);
	231	}
	232
	233	void show_usage(int argc, char **argv)
	234	{
06637138 MD	235	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	236	argv[0]);
	237	printf("OPTIONS:\n");
06637138 MD	238	printf(" [-d delay] (writer period (us))\n");
	239	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	240	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	241	printf(" [-v] (verbose output)\n");
	242	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
51299083 MD	243	printf("\n");
	244	}
	245
51299083 MD	246	int main(int argc, char **argv)
	247	{
	248	int err;
	249	pthread_t tid_reader, tid_writer;
	250	void *tret;
	251	unsigned long long count_reader, count_writer;
	252	unsigned long long tot_reads = 0, tot_writes = 0;
	253	int i, a;
51299083 MD	254
	255	if (argc < 4) {
	256	show_usage(argc, argv);
	257	return -1;
	258	}
5481ddb3	259	cmm_smp_mb();
51299083 MD	260
	261	err = sscanf(argv[1], "%u", &nr_readers);
	262	if (err != 1) {
	263	show_usage(argc, argv);
	264	return -1;
	265	}
	266
	267	err = sscanf(argv[2], "%u", &nr_writers);
	268	if (err != 1) {
	269	show_usage(argc, argv);
	270	return -1;
	271	}
	272
	273	err = sscanf(argv[3], "%lu", &duration);
	274	if (err != 1) {
	275	show_usage(argc, argv);
	276	return -1;
	277	}
	278
51299083 MD	279	for (i = 4; i < argc; i++) {
	280	if (argv[i][0] != '-')
	281	continue;
	282	switch (argv[i][1]) {
51299083 MD	283	case 'a':
	284	if (argc < i + 2) {
	285	show_usage(argc, argv);
	286	return -1;
	287	}
	288	a = atoi(argv[++i]);
2a7ac59d	289	cpu_affinities[next_aff++] = a;
51299083	290	use_affinity = 1;
4bad7d45	291	printf_verbose("Adding CPU %d affinity\n", a);
51299083	292	break;
8b632bab MD	293	case 'c':
	294	if (argc < i + 2) {
	295	show_usage(argc, argv);
	296	return -1;
	297	}
9e31d0f0	298	rduration = atol(argv[++i]);
8b632bab	299	break;
51299083 MD	300	case 'd':
	301	if (argc < i + 2) {
	302	show_usage(argc, argv);
	303	return -1;
	304	}
9e31d0f0	305	wdelay = atol(argv[++i]);
51299083	306	break;
31b598e0 MD	307	case 'e':
	308	if (argc < i + 2) {
	309	show_usage(argc, argv);
	310	return -1;
	311	}
	312	wduration = atol(argv[++i]);
	313	break;
4bad7d45 MD	314	case 'v':
	315	verbose_mode = 1;
	316	break;
51299083 MD	317	}
	318	}
	319
4bad7d45	320	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
51299083	321	duration, nr_readers, nr_writers);
9e31d0f0	322	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45	323	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	324	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	325	"main", urcu_get_thread_id());
51299083	326
9aa14175 MD	327	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	328	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	329	count_reader = calloc(nr_readers, sizeof(*count_reader));
	330	count_writer = calloc(nr_writers, sizeof(*count_writer));
	331	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	332	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
51299083	333
2a7ac59d MD	334	next_aff = 0;
2a7ac59d MD	335
51299083 MD	336	for (i = 0; i < nr_readers; i++) {
	337	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	338	(void *)(long)i);
	339	if (err != 0)
	340	exit(1);
	341	}
	342	for (i = 0; i < nr_writers; i++) {
	343	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	344	(void *)(long)i);
	345	if (err != 0)
	346	exit(1);
	347	}
	348
5481ddb3	349	cmm_smp_mb();
51299083 MD	350
	351	test_go = 1;
	352
	353	sleep(duration);
	354
	355	test_stop = 1;
	356
	357	for (i = 0; i < nr_readers; i++) {
	358	err = pthread_join(tid_reader[i], &tret);
	359	if (err != 0)
	360	exit(1);
	361	tot_reads += tot_nr_reads[i];
	362	}
	363	for (i = 0; i < nr_writers; i++) {
	364	err = pthread_join(tid_writer[i], &tret);
	365	if (err != 0)
	366	exit(1);
	367	tot_writes += tot_nr_writes[i];
	368	}
4bad7d45 MD	369
4bad7d45 MD	370	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
51299083	371	tot_writes);
a50a7b43	372	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	373	"nr_writers %3u "
9e31d0f0	374	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	375	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	376	nr_writers, wdelay, tot_reads, tot_writes,
	377	tot_reads + tot_writes);
	378
51299083 MD	379	free(tid_reader);
	380	free(tid_writer);
	381	free(count_reader);
	382	free(count_writer);
	383	free(tot_nr_reads);
	384	free(tot_nr_writes);
	385	return 0;
	386	}