[urcu.git] / tests / benchmark / test_urcu_wfq.c

/*
 * test_urcu_wfq.c
 *
 * Userspace RCU library - example RCU-based lock-free queue
 *
 * Copyright February 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 * Copyright February 2010 - Paolo Bonzini <pbonzini@redhat.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 <stdint.h>
#include <stdbool.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

/* Remove deprecation warnings from test build. */
#define CDS_WFQ_DEPRECATED

#include <urcu.h>
#include <urcu/wfqueue.h>

static volatile int test_go, test_stop;

static unsigned long rduration;

static unsigned long duration;

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

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_dequeue(void)
{
	return !test_stop;
}

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

static DEFINE_URCU_TLS(unsigned long long, nr_dequeues);
static DEFINE_URCU_TLS(unsigned long long, nr_enqueues);

static DEFINE_URCU_TLS(unsigned long long, nr_successful_dequeues);
static DEFINE_URCU_TLS(unsigned long long, nr_successful_enqueues);

static unsigned int nr_enqueuers;
static unsigned int nr_dequeuers;

static struct cds_wfq_queue q;

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

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		struct cds_wfq_node *node = malloc(sizeof(*node));
		if (!node)
			goto fail;
		cds_wfq_node_init(node);
		cds_wfq_enqueue(&q, node);
		URCU_TLS(nr_successful_enqueues)++;

		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
fail:
		URCU_TLS(nr_enqueues)++;
		if (caa_unlikely(!test_duration_enqueue()))
			break;
	}

	count[0] = URCU_TLS(nr_enqueues);
	count[1] = URCU_TLS(nr_successful_enqueues);
	printf_verbose("enqueuer thread_end, tid %lu, "
			"enqueues %llu successful_enqueues %llu\n",
			urcu_get_thread_id(),
			URCU_TLS(nr_enqueues),
			URCU_TLS(nr_successful_enqueues));
	return ((void*)1);

}

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

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		struct cds_wfq_node *node = cds_wfq_dequeue_blocking(&q);

		if (node) {
			free(node);
			URCU_TLS(nr_successful_dequeues)++;
		}

		URCU_TLS(nr_dequeues)++;
		if (caa_unlikely(!test_duration_dequeue()))
			break;
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
	}

	printf_verbose("dequeuer thread_end, tid %lu, "
			"dequeues %llu, successful_dequeues %llu\n",
			urcu_get_thread_id(),
			URCU_TLS(nr_dequeues),
			URCU_TLS(nr_successful_dequeues));
	count[0] = URCU_TLS(nr_dequeues);
	count[1] = URCU_TLS(nr_successful_dequeues);
	return ((void*)2);
}

void test_end(struct cds_wfq_queue *q, unsigned long long *nr_dequeues)
{
	struct cds_wfq_node *node;

	do {
		node = cds_wfq_dequeue_blocking(q);
		if (node) {
			free(node);
			(*nr_dequeues)++;
		}
	} while (node);
}

void show_usage(int argc, char **argv)
{
	printf("Usage : %s nr_dequeuers nr_enqueuers duration (s) <OPTIONS>\n",
		argv[0]);
	printf("OPTIONS:\n");
	printf("	[-d delay] (enqueuer period (in loops))\n");
	printf("	[-c duration] (dequeuer period (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_enqueuer, *tid_dequeuer;
	void *tret;
	unsigned long long *count_enqueuer, *count_dequeuer;
	unsigned long long tot_enqueues = 0, tot_dequeues = 0;
	unsigned long long tot_successful_enqueues = 0,
			   tot_successful_dequeues = 0;
	unsigned long long end_dequeues = 0;
	int i, a;

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

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

	err = sscanf(argv[2], "%u", &nr_enqueuers);
	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 'v':
			verbose_mode = 1;
			break;
		}
	}

	printf_verbose("running test for %lu seconds, %u enqueuers, "
		       "%u dequeuers.\n",
		       duration, nr_enqueuers, nr_dequeuers);
	printf_verbose("Writer delay : %lu loops.\n", rduration);
	printf_verbose("Reader duration : %lu loops.\n", wdelay);
	printf_verbose("thread %-6s, tid %lu\n",
			"main", urcu_get_thread_id());

	tid_enqueuer = calloc(nr_enqueuers, sizeof(*tid_enqueuer));
	tid_dequeuer = calloc(nr_dequeuers, sizeof(*tid_dequeuer));
	count_enqueuer = calloc(nr_enqueuers, 2 * sizeof(*count_enqueuer));
	count_dequeuer = calloc(nr_dequeuers, 2 * sizeof(*count_dequeuer));
	cds_wfq_init(&q);

	next_aff = 0;

	for (i = 0; i < nr_enqueuers; i++) {
		err = pthread_create(&tid_enqueuer[i], NULL, thr_enqueuer,
				     &count_enqueuer[2 * i]);
		if (err != 0)
			exit(1);
	}
	for (i = 0; i < nr_dequeuers; i++) {
		err = pthread_create(&tid_dequeuer[i], NULL, thr_dequeuer,
				     &count_dequeuer[2 * i]);
		if (err != 0)
			exit(1);
	}

	cmm_smp_mb();

	test_go = 1;

	for (i = 0; i < duration; i++) {
		sleep(1);
		if (verbose_mode)
			write (1, ".", 1);
	}

	test_stop = 1;

	for (i = 0; i < nr_enqueuers; i++) {
		err = pthread_join(tid_enqueuer[i], &tret);
		if (err != 0)
			exit(1);
		tot_enqueues += count_enqueuer[2 * i];
		tot_successful_enqueues += count_enqueuer[2 * i + 1];
	}
	for (i = 0; i < nr_dequeuers; i++) {
		err = pthread_join(tid_dequeuer[i], &tret);
		if (err != 0)
			exit(1);
		tot_dequeues += count_dequeuer[2 * i];
		tot_successful_dequeues += count_dequeuer[2 * i + 1];
	}
	
	test_end(&q, &end_dequeues);

	printf_verbose("total number of enqueues : %llu, dequeues %llu\n",
		       tot_enqueues, tot_dequeues);
	printf_verbose("total number of successful enqueues : %llu, "
		       "successful dequeues %llu\n",
		       tot_successful_enqueues, tot_successful_dequeues);
	printf("SUMMARY %-25s testdur %4lu nr_enqueuers %3u wdelay %6lu "
		"nr_dequeuers %3u "
		"rdur %6lu nr_enqueues %12llu nr_dequeues %12llu "
		"successful enqueues %12llu successful dequeues %12llu "
		"end_dequeues %llu nr_ops %12llu\n",
		argv[0], duration, nr_enqueuers, wdelay,
		nr_dequeuers, rduration, tot_enqueues, tot_dequeues,
		tot_successful_enqueues,
		tot_successful_dequeues, end_dequeues,
		tot_enqueues + tot_dequeues);
	if (tot_successful_enqueues != tot_successful_dequeues + end_dequeues)
		printf("WARNING! Discrepancy between nr succ. enqueues %llu vs "
		       "succ. dequeues + end dequeues %llu.\n",
		       tot_successful_enqueues,
		       tot_successful_dequeues + end_dequeues);

	free(count_enqueuer);
	free(count_dequeuer);
	free(tid_enqueuer);
	free(tid_dequeuer);
	return 0;
}
Commit	Line	Data
ee566d46 MD	1	/*
	2	* test_urcu_wfq.c
	3	*
	4	* Userspace RCU library - example RCU-based lock-free queue
	5	*
	6	* Copyright February 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	7	* Copyright February 2010 - Paolo Bonzini <pbonzini@redhat.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write to the Free Software Foundation, Inc.,
	21	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	22	*/
	23
	24	#define _GNU_SOURCE
f5ab766e	25	#include "config.h"
ee566d46 MD	26	#include <stdio.h>
	27	#include <pthread.h>
	28	#include <stdlib.h>
	29	#include <stdint.h>
	30	#include <stdbool.h>
	31	#include <string.h>
	32	#include <sys/types.h>
	33	#include <sys/wait.h>
	34	#include <unistd.h>
	35	#include <stdio.h>
	36	#include <assert.h>
ee566d46 MD	37	#include <errno.h>
	38
	39	#include <urcu/arch.h>
bd252a04	40	#include <urcu/tls-compat.h>
2953b501	41	#include "cpuset.h"
94df6318	42	#include "thread-id.h"
65fcc7e9	43
ee566d46 MD	44	/* hardcoded number of CPUs */
	45	#define NR_CPUS 16384
	46
ee566d46 MD	47	#ifndef DYNAMIC_LINK_TEST
	48	#define _LGPL_SOURCE
	49	#endif
14748510 MD	50
	51	/* Remove deprecation warnings from test build. */
	52	#define CDS_WFQ_DEPRECATED
	53
ee566d46	54	#include <urcu.h>
4afee0a7	55	#include <urcu/wfqueue.h>
ee566d46 MD	56
	57	static volatile int test_go, test_stop;
	58
	59	static unsigned long rduration;
	60
	61	static unsigned long duration;
	62
	63	/* read-side C.S. duration, in loops */
	64	static unsigned long wdelay;
	65
ab0aacbe	66	static inline void loop_sleep(unsigned long loops)
ee566d46	67	{
ab0aacbe	68	while (loops-- != 0)
06f22bdb	69	caa_cpu_relax();
ee566d46 MD	70	}
	71
	72	static int verbose_mode;
	73
	74	#define printf_verbose(fmt, args...) \
	75	do { \
	76	if (verbose_mode) \
	77	printf(fmt, args); \
	78	} while (0)
	79
	80	static unsigned int cpu_affinities[NR_CPUS];
	81	static unsigned int next_aff = 0;
	82	static int use_affinity = 0;
	83
	84	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	85
ee566d46 MD	86	static void set_affinity(void)
ee566d46 MD	87	{
95bc7fb9	88	#if HAVE_SCHED_SETAFFINITY
ee566d46	89	cpu_set_t mask;
95bc7fb9 MD	90	int cpu, ret;
95bc7fb9 MD	91	#endif /* HAVE_SCHED_SETAFFINITY */
ee566d46 MD	92
	93	if (!use_affinity)
	94	return;
	95
	96	#if HAVE_SCHED_SETAFFINITY
	97	ret = pthread_mutex_lock(&affinity_mutex);
	98	if (ret) {
	99	perror("Error in pthread mutex lock");
	100	exit(-1);
	101	}
	102	cpu = cpu_affinities[next_aff++];
	103	ret = pthread_mutex_unlock(&affinity_mutex);
	104	if (ret) {
	105	perror("Error in pthread mutex unlock");
	106	exit(-1);
	107	}
	108
	109	CPU_ZERO(&mask);
	110	CPU_SET(cpu, &mask);
	111	#if SCHED_SETAFFINITY_ARGS == 2
	112	sched_setaffinity(0, &mask);
	113	#else
	114	sched_setaffinity(0, sizeof(mask), &mask);
	115	#endif
	116	#endif /* HAVE_SCHED_SETAFFINITY */
	117	}
	118
	119	/*
	120	* returns 0 if test should end.
	121	*/
	122	static int test_duration_dequeue(void)
	123	{
	124	return !test_stop;
	125	}
	126
	127	static int test_duration_enqueue(void)
	128	{
	129	return !test_stop;
	130	}
	131
bd252a04 MD	132	static DEFINE_URCU_TLS(unsigned long long, nr_dequeues);
bd252a04 MD	133	static DEFINE_URCU_TLS(unsigned long long, nr_enqueues);
ee566d46	134
bd252a04 MD	135	static DEFINE_URCU_TLS(unsigned long long, nr_successful_dequeues);
bd252a04 MD	136	static DEFINE_URCU_TLS(unsigned long long, nr_successful_enqueues);
ee566d46 MD	137
	138	static unsigned int nr_enqueuers;
	139	static unsigned int nr_dequeuers;
	140
16aa9ee8	141	static struct cds_wfq_queue q;
ee566d46 MD	142
	143	void thr_enqueuer(void _count)
	144	{
	145	unsigned long long *count = _count;
	146
94df6318 MD	147	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	148	"enqueuer", urcu_get_thread_id());
ee566d46 MD	149
	150	set_affinity();
	151
ee566d46 MD	152	while (!test_go)
	153	{
	154	}
5481ddb3	155	cmm_smp_mb();
ee566d46 MD	156
ee566d46 MD	157	for (;;) {
16aa9ee8	158	struct cds_wfq_node node = malloc(sizeof(node));
ee566d46 MD	159	if (!node)
ee566d46 MD	160	goto fail;
16aa9ee8 DG	161	cds_wfq_node_init(node);
16aa9ee8 DG	162	cds_wfq_enqueue(&q, node);
bd252a04	163	URCU_TLS(nr_successful_enqueues)++;
ee566d46	164
a0b7f7ea	165	if (caa_unlikely(wdelay))
ee566d46 MD	166	loop_sleep(wdelay);
ee566d46 MD	167	fail:
bd252a04	168	URCU_TLS(nr_enqueues)++;
a0b7f7ea	169	if (caa_unlikely(!test_duration_enqueue()))
ee566d46 MD	170	break;
	171	}
	172
bd252a04 MD	173	count[0] = URCU_TLS(nr_enqueues);
bd252a04 MD	174	count[1] = URCU_TLS(nr_successful_enqueues);
94df6318 MD	175	printf_verbose("enqueuer thread_end, tid %lu, "
	176	"enqueues %llu successful_enqueues %llu\n",
	177	urcu_get_thread_id(),
	178	URCU_TLS(nr_enqueues),
	179	URCU_TLS(nr_successful_enqueues));
ee566d46 MD	180	return ((void*)1);
	181
	182	}
	183
ee566d46 MD	184	void thr_dequeuer(void _count)
	185	{
	186	unsigned long long *count = _count;
	187
94df6318 MD	188	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	189	"dequeuer", urcu_get_thread_id());
ee566d46 MD	190
	191	set_affinity();
	192
ee566d46 MD	193	while (!test_go)
	194	{
	195	}
5481ddb3	196	cmm_smp_mb();
ee566d46 MD	197
ee566d46 MD	198	for (;;) {
16aa9ee8	199	struct cds_wfq_node *node = cds_wfq_dequeue_blocking(&q);
ee566d46 MD	200
ee566d46 MD	201	if (node) {
4afee0a7	202	free(node);
bd252a04	203	URCU_TLS(nr_successful_dequeues)++;
ee566d46 MD	204	}
ee566d46 MD	205
bd252a04	206	URCU_TLS(nr_dequeues)++;
a0b7f7ea	207	if (caa_unlikely(!test_duration_dequeue()))
ee566d46	208	break;
a0b7f7ea	209	if (caa_unlikely(rduration))
ee566d46 MD	210	loop_sleep(rduration);
	211	}
	212
94df6318 MD	213	printf_verbose("dequeuer thread_end, tid %lu, "
	214	"dequeues %llu, successful_dequeues %llu\n",
	215	urcu_get_thread_id(),
	216	URCU_TLS(nr_dequeues),
	217	URCU_TLS(nr_successful_dequeues));
bd252a04 MD	218	count[0] = URCU_TLS(nr_dequeues);
bd252a04 MD	219	count[1] = URCU_TLS(nr_successful_dequeues);
ee566d46 MD	220	return ((void*)2);
	221	}
	222
16aa9ee8	223	void test_end(struct cds_wfq_queue q, unsigned long long nr_dequeues)
ee566d46	224	{
16aa9ee8	225	struct cds_wfq_node *node;
ee566d46 MD	226
ee566d46 MD	227	do {
16aa9ee8	228	node = cds_wfq_dequeue_blocking(q);
ee566d46	229	if (node) {
4afee0a7	230	free(node);
ee566d46 MD	231	(*nr_dequeues)++;
	232	}
	233	} while (node);
	234	}
	235
	236	void show_usage(int argc, char **argv)
	237	{
06637138 MD	238	printf("Usage : %s nr_dequeuers nr_enqueuers duration (s) <OPTIONS>\n",
	239	argv[0]);
	240	printf("OPTIONS:\n");
	241	printf(" [-d delay] (enqueuer period (in loops))\n");
	242	printf(" [-c duration] (dequeuer period (in loops))\n");
	243	printf(" [-v] (verbose output)\n");
	244	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
ee566d46 MD	245	printf("\n");
	246	}
	247
	248	int main(int argc, char **argv)
	249	{
	250	int err;
	251	pthread_t tid_enqueuer, tid_dequeuer;
	252	void *tret;
	253	unsigned long long count_enqueuer, count_dequeuer;
	254	unsigned long long tot_enqueues = 0, tot_dequeues = 0;
	255	unsigned long long tot_successful_enqueues = 0,
	256	tot_successful_dequeues = 0;
	257	unsigned long long end_dequeues = 0;
	258	int i, a;
	259
	260	if (argc < 4) {
	261	show_usage(argc, argv);
	262	return -1;
	263	}
	264
	265	err = sscanf(argv[1], "%u", &nr_dequeuers);
	266	if (err != 1) {
	267	show_usage(argc, argv);
	268	return -1;
	269	}
	270
	271	err = sscanf(argv[2], "%u", &nr_enqueuers);
	272	if (err != 1) {
	273	show_usage(argc, argv);
	274	return -1;
	275	}
	276
	277	err = sscanf(argv[3], "%lu", &duration);
	278	if (err != 1) {
	279	show_usage(argc, argv);
	280	return -1;
	281	}
	282
	283	for (i = 4; i < argc; i++) {
	284	if (argv[i][0] != '-')
	285	continue;
	286	switch (argv[i][1]) {
	287	case 'a':
	288	if (argc < i + 2) {
	289	show_usage(argc, argv);
	290	return -1;
	291	}
	292	a = atoi(argv[++i]);
	293	cpu_affinities[next_aff++] = a;
	294	use_affinity = 1;
	295	printf_verbose("Adding CPU %d affinity\n", a);
	296	break;
	297	case 'c':
	298	if (argc < i + 2) {
	299	show_usage(argc, argv);
	300	return -1;
	301	}
	302	rduration = atol(argv[++i]);
	303	break;
	304	case 'd':
	305	if (argc < i + 2) {
	306	show_usage(argc, argv);
	307	return -1;
	308	}
309	wdelay = atol(argv[++i]);
310	break;
311	case 'v':
312	verbose_mode = 1;
313	break;
314	}
315	}
316
317	printf_verbose("running test for %lu seconds, %u enqueuers, "
318	"%u dequeuers.\n",
319	duration, nr_enqueuers, nr_dequeuers);
320	printf_verbose("Writer delay : %lu loops.\n", rduration);
321	printf_verbose("Reader duration : %lu loops.\n", wdelay);
94df6318 MD	322	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	323	"main", urcu_get_thread_id());
ee566d46	324
9aa14175 MD	325	tid_enqueuer = calloc(nr_enqueuers, sizeof(*tid_enqueuer));
	326	tid_dequeuer = calloc(nr_dequeuers, sizeof(*tid_dequeuer));
	327	count_enqueuer = calloc(nr_enqueuers, 2 * sizeof(*count_enqueuer));
	328	count_dequeuer = calloc(nr_dequeuers, 2 * sizeof(*count_dequeuer));
16aa9ee8	329	cds_wfq_init(&q);
ee566d46 MD	330
	331	next_aff = 0;
	332
	333	for (i = 0; i < nr_enqueuers; i++) {
	334	err = pthread_create(&tid_enqueuer[i], NULL, thr_enqueuer,
	335	&count_enqueuer[2 * i]);
	336	if (err != 0)
	337	exit(1);
	338	}
	339	for (i = 0; i < nr_dequeuers; i++) {
	340	err = pthread_create(&tid_dequeuer[i], NULL, thr_dequeuer,
	341	&count_dequeuer[2 * i]);
	342	if (err != 0)
	343	exit(1);
	344	}
	345
5481ddb3	346	cmm_smp_mb();
ee566d46 MD	347
	348	test_go = 1;
	349
	350	for (i = 0; i < duration; i++) {
	351	sleep(1);
	352	if (verbose_mode)
	353	write (1, ".", 1);
	354	}
	355
	356	test_stop = 1;
	357
	358	for (i = 0; i < nr_enqueuers; i++) {
	359	err = pthread_join(tid_enqueuer[i], &tret);
	360	if (err != 0)
	361	exit(1);
	362	tot_enqueues += count_enqueuer[2 * i];
	363	tot_successful_enqueues += count_enqueuer[2 * i + 1];
	364	}
	365	for (i = 0; i < nr_dequeuers; i++) {
	366	err = pthread_join(tid_dequeuer[i], &tret);
	367	if (err != 0)
	368	exit(1);
	369	tot_dequeues += count_dequeuer[2 * i];
	370	tot_successful_dequeues += count_dequeuer[2 * i + 1];
	371	}
	372
	373	test_end(&q, &end_dequeues);
	374
	375	printf_verbose("total number of enqueues : %llu, dequeues %llu\n",
	376	tot_enqueues, tot_dequeues);
	377	printf_verbose("total number of successful enqueues : %llu, "
	378	"successful dequeues %llu\n",
	379	tot_successful_enqueues, tot_successful_dequeues);
	380	printf("SUMMARY %-25s testdur %4lu nr_enqueuers %3u wdelay %6lu "
	381	"nr_dequeuers %3u "
	382	"rdur %6lu nr_enqueues %12llu nr_dequeues %12llu "
	383	"successful enqueues %12llu successful dequeues %12llu "
	384	"end_dequeues %llu nr_ops %12llu\n",
	385	argv[0], duration, nr_enqueuers, wdelay,
	386	nr_dequeuers, rduration, tot_enqueues, tot_dequeues,
	387	tot_successful_enqueues,
	388	tot_successful_dequeues, end_dequeues,
	389	tot_enqueues + tot_dequeues);
	390	if (tot_successful_enqueues != tot_successful_dequeues + end_dequeues)
	391	printf("WARNING! Discrepancy between nr succ. enqueues %llu vs "
	392	"succ. dequeues + end dequeues %llu.\n",
	393	tot_successful_enqueues,
	394	tot_successful_dequeues + end_dequeues);
	395
	396	free(count_enqueuer);
	397	free(count_dequeuer);
	398	free(tid_enqueuer);
	399	free(tid_dequeuer);
	400	return 0;
	401	}