[userspace-rcu.git] / tests / 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"

#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
#endif
#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 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;

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_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, thread id : %lx, tid %lu\n",
			"enqueuer", (unsigned long) pthread_self(),
			(unsigned long) gettid());

	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, thread id : %lx, tid %lu, "
		       "enqueues %llu successful_enqueues %llu\n",
		       (unsigned long) pthread_self(),
			(unsigned long) gettid(),
		       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, thread id : %lx, tid %lu\n",
			"dequeuer", (unsigned long) pthread_self(),
			(unsigned long) gettid());

	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, thread id : %lx, tid %lu, "
		       "dequeues %llu, successful_dequeues %llu\n",
		       (unsigned long) pthread_self(),
			(unsigned long) gettid(),
		       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)", argv[0]);
	printf(" [-d delay] (enqueuer period (in loops))");
	printf(" [-c duration] (dequeuer period (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_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, thread id : %lx, tid %lu\n",
			"main", (unsigned long) pthread_self(),
			(unsigned long) gettid());

	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
	25	#include "../config.h"
	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>
95d8822d	41	#include "cpuset.h"
ee566d46	42
65fcc7e9 MD	43	#ifdef __linux__
	44	#include <syscall.h>
	45	#endif
	46
ee566d46 MD	47	/* hardcoded number of CPUs */
	48	#define NR_CPUS 16384
	49
	50	#if defined(_syscall0)
	51	_syscall0(pid_t, gettid)
	52	#elif defined(__NR_gettid)
	53	static inline pid_t gettid(void)
	54	{
	55	return syscall(__NR_gettid);
	56	}
	57	#else
	58	#warning "use pid as tid"
	59	static inline pid_t gettid(void)
	60	{
	61	return getpid();
	62	}
	63	#endif
	64
	65	#ifndef DYNAMIC_LINK_TEST
	66	#define _LGPL_SOURCE
	67	#endif
	68	#include <urcu.h>
4afee0a7	69	#include <urcu/wfqueue.h>
ee566d46 MD	70
	71	static volatile int test_go, test_stop;
	72
	73	static unsigned long rduration;
	74
	75	static unsigned long duration;
	76
	77	/* read-side C.S. duration, in loops */
	78	static unsigned long wdelay;
	79
	80	static inline void loop_sleep(unsigned long l)
	81	{
	82	while(l-- != 0)
06f22bdb	83	caa_cpu_relax();
ee566d46 MD	84	}
	85
	86	static int verbose_mode;
	87
	88	#define printf_verbose(fmt, args...) \
	89	do { \
	90	if (verbose_mode) \
	91	printf(fmt, args); \
	92	} while (0)
	93
	94	static unsigned int cpu_affinities[NR_CPUS];
	95	static unsigned int next_aff = 0;
	96	static int use_affinity = 0;
	97
	98	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	99
ee566d46 MD	100	static void set_affinity(void)
	101	{
	102	cpu_set_t mask;
	103	int cpu;
	104	int ret;
	105
	106	if (!use_affinity)
	107	return;
	108
	109	#if HAVE_SCHED_SETAFFINITY
	110	ret = pthread_mutex_lock(&affinity_mutex);
	111	if (ret) {
	112	perror("Error in pthread mutex lock");
	113	exit(-1);
	114	}
	115	cpu = cpu_affinities[next_aff++];
	116	ret = pthread_mutex_unlock(&affinity_mutex);
	117	if (ret) {
	118	perror("Error in pthread mutex unlock");
	119	exit(-1);
	120	}
	121
	122	CPU_ZERO(&mask);
	123	CPU_SET(cpu, &mask);
	124	#if SCHED_SETAFFINITY_ARGS == 2
	125	sched_setaffinity(0, &mask);
	126	#else
	127	sched_setaffinity(0, sizeof(mask), &mask);
	128	#endif
	129	#endif /* HAVE_SCHED_SETAFFINITY */
	130	}
	131
	132	/*
	133	* returns 0 if test should end.
	134	*/
	135	static int test_duration_dequeue(void)
	136	{
	137	return !test_stop;
	138	}
	139
	140	static int test_duration_enqueue(void)
	141	{
	142	return !test_stop;
	143	}
	144
bd252a04 MD	145	static DEFINE_URCU_TLS(unsigned long long, nr_dequeues);
bd252a04 MD	146	static DEFINE_URCU_TLS(unsigned long long, nr_enqueues);
ee566d46	147
bd252a04 MD	148	static DEFINE_URCU_TLS(unsigned long long, nr_successful_dequeues);
bd252a04 MD	149	static DEFINE_URCU_TLS(unsigned long long, nr_successful_enqueues);
ee566d46 MD	150
	151	static unsigned int nr_enqueuers;
	152	static unsigned int nr_dequeuers;
	153
16aa9ee8	154	static struct cds_wfq_queue q;
ee566d46 MD	155
	156	void thr_enqueuer(void _count)
	157	{
	158	unsigned long long *count = _count;
	159
	160	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	161	"enqueuer", (unsigned long) pthread_self(),
2d72fae2 MD	162	(unsigned long) gettid());
ee566d46 MD	163
	164	set_affinity();
	165
ee566d46 MD	166	while (!test_go)
	167	{
	168	}
5481ddb3	169	cmm_smp_mb();
ee566d46 MD	170
ee566d46 MD	171	for (;;) {
16aa9ee8	172	struct cds_wfq_node node = malloc(sizeof(node));
ee566d46 MD	173	if (!node)
ee566d46 MD	174	goto fail;
16aa9ee8 DG	175	cds_wfq_node_init(node);
16aa9ee8 DG	176	cds_wfq_enqueue(&q, node);
bd252a04	177	URCU_TLS(nr_successful_enqueues)++;
ee566d46	178
a0b7f7ea	179	if (caa_unlikely(wdelay))
ee566d46 MD	180	loop_sleep(wdelay);
ee566d46 MD	181	fail:
bd252a04	182	URCU_TLS(nr_enqueues)++;
a0b7f7ea	183	if (caa_unlikely(!test_duration_enqueue()))
ee566d46 MD	184	break;
	185	}
	186
bd252a04 MD	187	count[0] = URCU_TLS(nr_enqueues);
bd252a04 MD	188	count[1] = URCU_TLS(nr_successful_enqueues);
ee566d46 MD	189	printf_verbose("enqueuer thread_end, thread id : %lx, tid %lu, "
ee566d46 MD	190	"enqueues %llu successful_enqueues %llu\n",
baf05c71	191	(unsigned long) pthread_self(),
2d72fae2	192	(unsigned long) gettid(),
bd252a04	193	URCU_TLS(nr_enqueues), URCU_TLS(nr_successful_enqueues));
ee566d46 MD	194	return ((void*)1);
	195
	196	}
	197
ee566d46 MD	198	void thr_dequeuer(void _count)
	199	{
	200	unsigned long long *count = _count;
	201
	202	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	203	"dequeuer", (unsigned long) pthread_self(),
2d72fae2 MD	204	(unsigned long) gettid());
ee566d46 MD	205
	206	set_affinity();
	207
ee566d46 MD	208	while (!test_go)
	209	{
	210	}
5481ddb3	211	cmm_smp_mb();
ee566d46 MD	212
ee566d46 MD	213	for (;;) {
16aa9ee8	214	struct cds_wfq_node *node = cds_wfq_dequeue_blocking(&q);
ee566d46 MD	215
ee566d46 MD	216	if (node) {
4afee0a7	217	free(node);
bd252a04	218	URCU_TLS(nr_successful_dequeues)++;
ee566d46 MD	219	}
ee566d46 MD	220
bd252a04	221	URCU_TLS(nr_dequeues)++;
a0b7f7ea	222	if (caa_unlikely(!test_duration_dequeue()))
ee566d46	223	break;
a0b7f7ea	224	if (caa_unlikely(rduration))
ee566d46 MD	225	loop_sleep(rduration);
	226	}
	227
ee566d46 MD	228	printf_verbose("dequeuer thread_end, thread id : %lx, tid %lu, "
ee566d46 MD	229	"dequeues %llu, successful_dequeues %llu\n",
baf05c71	230	(unsigned long) pthread_self(),
2d72fae2	231	(unsigned long) gettid(),
bd252a04 MD	232	URCU_TLS(nr_dequeues), URCU_TLS(nr_successful_dequeues));
	233	count[0] = URCU_TLS(nr_dequeues);
	234	count[1] = URCU_TLS(nr_successful_dequeues);
ee566d46 MD	235	return ((void*)2);
	236	}
	237
16aa9ee8	238	void test_end(struct cds_wfq_queue q, unsigned long long nr_dequeues)
ee566d46	239	{
16aa9ee8	240	struct cds_wfq_node *node;
ee566d46 MD	241
ee566d46 MD	242	do {
16aa9ee8	243	node = cds_wfq_dequeue_blocking(q);
ee566d46	244	if (node) {
4afee0a7	245	free(node);
ee566d46 MD	246	(*nr_dequeues)++;
	247	}
	248	} while (node);
	249	}
	250
	251	void show_usage(int argc, char **argv)
	252	{
	253	printf("Usage : %s nr_dequeuers nr_enqueuers duration (s)", argv[0]);
	254	printf(" [-d delay] (enqueuer period (in loops))");
	255	printf(" [-c duration] (dequeuer period (in loops))");
	256	printf(" [-v] (verbose output)");
	257	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	258	printf("\n");
	259	}
	260
	261	int main(int argc, char **argv)
	262	{
	263	int err;
	264	pthread_t tid_enqueuer, tid_dequeuer;
	265	void *tret;
	266	unsigned long long count_enqueuer, count_dequeuer;
	267	unsigned long long tot_enqueues = 0, tot_dequeues = 0;
	268	unsigned long long tot_successful_enqueues = 0,
	269	tot_successful_dequeues = 0;
	270	unsigned long long end_dequeues = 0;
	271	int i, a;
	272
	273	if (argc < 4) {
	274	show_usage(argc, argv);
	275	return -1;
	276	}
	277
	278	err = sscanf(argv[1], "%u", &nr_dequeuers);
	279	if (err != 1) {
	280	show_usage(argc, argv);
	281	return -1;
	282	}
	283
	284	err = sscanf(argv[2], "%u", &nr_enqueuers);
	285	if (err != 1) {
	286	show_usage(argc, argv);
	287	return -1;
	288	}
	289
	290	err = sscanf(argv[3], "%lu", &duration);
	291	if (err != 1) {
	292	show_usage(argc, argv);
	293	return -1;
	294	}
	295
	296	for (i = 4; i < argc; i++) {
	297	if (argv[i][0] != '-')
	298	continue;
	299	switch (argv[i][1]) {
	300	case 'a':
	301	if (argc < i + 2) {
	302	show_usage(argc, argv);
	303	return -1;
	304	}
	305	a = atoi(argv[++i]);
	306	cpu_affinities[next_aff++] = a;
	307	use_affinity = 1;
	308	printf_verbose("Adding CPU %d affinity\n", a);
	309	break;
310	case 'c':
311	if (argc < i + 2) {
312	show_usage(argc, argv);
313	return -1;
314	}
315	rduration = atol(argv[++i]);
316	break;
317	case 'd':
318	if (argc < i + 2) {
319	show_usage(argc, argv);
320	return -1;
321	}
322	wdelay = atol(argv[++i]);
323	break;
324	case 'v':
325	verbose_mode = 1;
326	break;
327	}
328	}
329
330	printf_verbose("running test for %lu seconds, %u enqueuers, "
331	"%u dequeuers.\n",
332	duration, nr_enqueuers, nr_dequeuers);
333	printf_verbose("Writer delay : %lu loops.\n", rduration);
334	printf_verbose("Reader duration : %lu loops.\n", wdelay);
335	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
2d72fae2 MD	336	"main", (unsigned long) pthread_self(),
2d72fae2 MD	337	(unsigned long) gettid());
ee566d46	338
f90535ef MD	339	tid_enqueuer = calloc(nr_enqueuers, sizeof(*tid_enqueuer));
	340	tid_dequeuer = calloc(nr_dequeuers, sizeof(*tid_dequeuer));
	341	count_enqueuer = calloc(nr_enqueuers, 2 * sizeof(*count_enqueuer));
	342	count_dequeuer = calloc(nr_dequeuers, 2 * sizeof(*count_dequeuer));
16aa9ee8	343	cds_wfq_init(&q);
ee566d46 MD	344
	345	next_aff = 0;
	346
	347	for (i = 0; i < nr_enqueuers; i++) {
	348	err = pthread_create(&tid_enqueuer[i], NULL, thr_enqueuer,
	349	&count_enqueuer[2 * i]);
	350	if (err != 0)
	351	exit(1);
	352	}
	353	for (i = 0; i < nr_dequeuers; i++) {
	354	err = pthread_create(&tid_dequeuer[i], NULL, thr_dequeuer,
	355	&count_dequeuer[2 * i]);
	356	if (err != 0)
	357	exit(1);
	358	}
	359
5481ddb3	360	cmm_smp_mb();
ee566d46 MD	361
	362	test_go = 1;
	363
	364	for (i = 0; i < duration; i++) {
	365	sleep(1);
	366	if (verbose_mode)
	367	write (1, ".", 1);
	368	}
	369
	370	test_stop = 1;
	371
	372	for (i = 0; i < nr_enqueuers; i++) {
	373	err = pthread_join(tid_enqueuer[i], &tret);
	374	if (err != 0)
	375	exit(1);
	376	tot_enqueues += count_enqueuer[2 * i];
	377	tot_successful_enqueues += count_enqueuer[2 * i + 1];
	378	}
	379	for (i = 0; i < nr_dequeuers; i++) {
	380	err = pthread_join(tid_dequeuer[i], &tret);
	381	if (err != 0)
	382	exit(1);
	383	tot_dequeues += count_dequeuer[2 * i];
	384	tot_successful_dequeues += count_dequeuer[2 * i + 1];
	385	}
	386
	387	test_end(&q, &end_dequeues);
	388
	389	printf_verbose("total number of enqueues : %llu, dequeues %llu\n",
	390	tot_enqueues, tot_dequeues);
	391	printf_verbose("total number of successful enqueues : %llu, "
	392	"successful dequeues %llu\n",
	393	tot_successful_enqueues, tot_successful_dequeues);
	394	printf("SUMMARY %-25s testdur %4lu nr_enqueuers %3u wdelay %6lu "
	395	"nr_dequeuers %3u "
	396	"rdur %6lu nr_enqueues %12llu nr_dequeues %12llu "
	397	"successful enqueues %12llu successful dequeues %12llu "
	398	"end_dequeues %llu nr_ops %12llu\n",
	399	argv[0], duration, nr_enqueuers, wdelay,
	400	nr_dequeuers, rduration, tot_enqueues, tot_dequeues,
	401	tot_successful_enqueues,
	402	tot_successful_dequeues, end_dequeues,
	403	tot_enqueues + tot_dequeues);
	404	if (tot_successful_enqueues != tot_successful_dequeues + end_dequeues)
	405	printf("WARNING! Discrepancy between nr succ. enqueues %llu vs "
	406	"succ. dequeues + end dequeues %llu.\n",
	407	tot_successful_enqueues,
	408	tot_successful_dequeues + end_dequeues);
	409
	410	free(count_enqueuer);
	411	free(count_dequeuer);
	412	free(tid_enqueuer);
	413	free(tid_dequeuer);
	414	return 0;
	415	}