[urcu.git] / tests / test_urcu_wfs.c

/*
 * test_urcu_wfs.c
 *
 * Userspace RCU library - example RCU-based lock-free stack
 *
 * 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 <sched.h>
#include <errno.h>

#include <urcu/arch.h>
#include <urcu/tls-compat.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/wfstack.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;

#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_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_wfs_stack s;

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

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		struct cds_wfs_node *node = malloc(sizeof(*node));
		if (!node)
			goto fail;
		cds_wfs_node_init(node);
		cds_wfs_push(&s, 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",
		       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", pthread_self(), (unsigned long)gettid());

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		struct cds_wfs_node *node = cds_wfs_pop_blocking(&s);

		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",
		       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_wfs_stack *s, unsigned long long *nr_dequeues)
{
	struct cds_wfs_node *node;

	do {
		node = cds_wfs_pop_blocking(s);
		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", pthread_self(), (unsigned long)gettid());

	tid_enqueuer = malloc(sizeof(*tid_enqueuer) * nr_enqueuers);
	tid_dequeuer = malloc(sizeof(*tid_dequeuer) * nr_dequeuers);
	count_enqueuer = malloc(2 * sizeof(*count_enqueuer) * nr_enqueuers);
	count_dequeuer = malloc(2 * sizeof(*count_dequeuer) * nr_dequeuers);
	cds_wfs_init(&s);

	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(&s, &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
a5eb5ffc MD	1	/*
	2	* test_urcu_wfs.c
	3	*
	4	* Userspace RCU library - example RCU-based lock-free stack
	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>
a5eb5ffc MD	37	#include <sched.h>
	38	#include <errno.h>
	39
	40	#include <urcu/arch.h>
bd252a04	41	#include <urcu/tls-compat.h>
a5eb5ffc	42
65fcc7e9 MD	43	#ifdef __linux__
	44	#include <syscall.h>
	45	#endif
	46
a5eb5ffc 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>
cb3f3d6b	69	#include <urcu/wfstack.h>
a5eb5ffc 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
ab0aacbe	80	static inline void loop_sleep(unsigned long loops)
a5eb5ffc	81	{
ab0aacbe	82	while (loops-- != 0)
06f22bdb	83	caa_cpu_relax();
a5eb5ffc 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
	100	#ifndef HAVE_CPU_SET_T
	101	typedef unsigned long cpu_set_t;
	102	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	103	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	104	#endif
	105
	106	static void set_affinity(void)
	107	{
	108	cpu_set_t mask;
	109	int cpu;
	110	int ret;
	111
	112	if (!use_affinity)
	113	return;
	114
	115	#if HAVE_SCHED_SETAFFINITY
	116	ret = pthread_mutex_lock(&affinity_mutex);
	117	if (ret) {
	118	perror("Error in pthread mutex lock");
	119	exit(-1);
	120	}
	121	cpu = cpu_affinities[next_aff++];
	122	ret = pthread_mutex_unlock(&affinity_mutex);
	123	if (ret) {
	124	perror("Error in pthread mutex unlock");
	125	exit(-1);
	126	}
	127
	128	CPU_ZERO(&mask);
	129	CPU_SET(cpu, &mask);
	130	#if SCHED_SETAFFINITY_ARGS == 2
	131	sched_setaffinity(0, &mask);
	132	#else
	133	sched_setaffinity(0, sizeof(mask), &mask);
	134	#endif
	135	#endif /* HAVE_SCHED_SETAFFINITY */
	136	}
	137
	138	/*
	139	* returns 0 if test should end.
	140	*/
	141	static int test_duration_dequeue(void)
	142	{
	143	return !test_stop;
	144	}
	145
	146	static int test_duration_enqueue(void)
	147	{
148	return !test_stop;
149	}
150
bd252a04 MD	151	static DEFINE_URCU_TLS(unsigned long long, nr_dequeues);
bd252a04 MD	152	static DEFINE_URCU_TLS(unsigned long long, nr_enqueues);
a5eb5ffc	153
bd252a04 MD	154	static DEFINE_URCU_TLS(unsigned long long, nr_successful_dequeues);
bd252a04 MD	155	static DEFINE_URCU_TLS(unsigned long long, nr_successful_enqueues);
a5eb5ffc MD	156
	157	static unsigned int nr_enqueuers;
	158	static unsigned int nr_dequeuers;
	159
16aa9ee8	160	static struct cds_wfs_stack s;
a5eb5ffc MD	161
	162	void thr_enqueuer(void _count)
	163	{
	164	unsigned long long *count = _count;
	165
	166	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
	167	"enqueuer", pthread_self(), (unsigned long)gettid());
	168
	169	set_affinity();
	170
a5eb5ffc MD	171	while (!test_go)
	172	{
	173	}
5481ddb3	174	cmm_smp_mb();
a5eb5ffc MD	175
a5eb5ffc MD	176	for (;;) {
16aa9ee8	177	struct cds_wfs_node node = malloc(sizeof(node));
a5eb5ffc MD	178	if (!node)
a5eb5ffc MD	179	goto fail;
16aa9ee8 DG	180	cds_wfs_node_init(node);
16aa9ee8 DG	181	cds_wfs_push(&s, node);
bd252a04	182	URCU_TLS(nr_successful_enqueues)++;
a5eb5ffc	183
a0b7f7ea	184	if (caa_unlikely(wdelay))
a5eb5ffc MD	185	loop_sleep(wdelay);
a5eb5ffc MD	186	fail:
bd252a04	187	URCU_TLS(nr_enqueues)++;
a0b7f7ea	188	if (caa_unlikely(!test_duration_enqueue()))
a5eb5ffc MD	189	break;
	190	}
	191
bd252a04 MD	192	count[0] = URCU_TLS(nr_enqueues);
bd252a04 MD	193	count[1] = URCU_TLS(nr_successful_enqueues);
a5eb5ffc MD	194	printf_verbose("enqueuer thread_end, thread id : %lx, tid %lu, "
a5eb5ffc MD	195	"enqueues %llu successful_enqueues %llu\n",
bd252a04 MD	196	pthread_self(), (unsigned long)gettid(),
bd252a04 MD	197	URCU_TLS(nr_enqueues), URCU_TLS(nr_successful_enqueues));
a5eb5ffc MD	198	return ((void*)1);
	199
	200	}
	201
	202	void thr_dequeuer(void _count)
	203	{
	204	unsigned long long *count = _count;
	205
	206	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
	207	"dequeuer", pthread_self(), (unsigned long)gettid());
	208
	209	set_affinity();
	210
a5eb5ffc MD	211	while (!test_go)
	212	{
	213	}
5481ddb3	214	cmm_smp_mb();
a5eb5ffc MD	215
a5eb5ffc MD	216	for (;;) {
16aa9ee8	217	struct cds_wfs_node *node = cds_wfs_pop_blocking(&s);
a5eb5ffc MD	218
a5eb5ffc MD	219	if (node) {
cb3f3d6b	220	free(node);
bd252a04	221	URCU_TLS(nr_successful_dequeues)++;
a5eb5ffc MD	222	}
a5eb5ffc MD	223
bd252a04	224	URCU_TLS(nr_dequeues)++;
a0b7f7ea	225	if (caa_unlikely(!test_duration_dequeue()))
a5eb5ffc	226	break;
a0b7f7ea	227	if (caa_unlikely(rduration))
a5eb5ffc MD	228	loop_sleep(rduration);
	229	}
	230
a5eb5ffc MD	231	printf_verbose("dequeuer thread_end, thread id : %lx, tid %lu, "
a5eb5ffc MD	232	"dequeues %llu, successful_dequeues %llu\n",
bd252a04 MD	233	pthread_self(), (unsigned long)gettid(),
	234	URCU_TLS(nr_dequeues), URCU_TLS(nr_successful_dequeues));
	235	count[0] = URCU_TLS(nr_dequeues);
	236	count[1] = URCU_TLS(nr_successful_dequeues);
a5eb5ffc MD	237	return ((void*)2);
	238	}
	239
16aa9ee8	240	void test_end(struct cds_wfs_stack s, unsigned long long nr_dequeues)
a5eb5ffc	241	{
16aa9ee8	242	struct cds_wfs_node *node;
a5eb5ffc MD	243
a5eb5ffc MD	244	do {
16aa9ee8	245	node = cds_wfs_pop_blocking(s);
a5eb5ffc MD	246	if (node) {
	247	free(node);
	248	(*nr_dequeues)++;
	249	}
	250	} while (node);
	251	}
	252
	253	void show_usage(int argc, char **argv)
	254	{
	255	printf("Usage : %s nr_dequeuers nr_enqueuers duration (s)", argv[0]);
	256	printf(" [-d delay] (enqueuer period (in loops))");
	257	printf(" [-c duration] (dequeuer period (in loops))");
	258	printf(" [-v] (verbose output)");
	259	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	260	printf("\n");
	261	}
	262
	263	int main(int argc, char **argv)
	264	{
	265	int err;
	266	pthread_t tid_enqueuer, tid_dequeuer;
	267	void *tret;
	268	unsigned long long count_enqueuer, count_dequeuer;
	269	unsigned long long tot_enqueues = 0, tot_dequeues = 0;
	270	unsigned long long tot_successful_enqueues = 0,
	271	tot_successful_dequeues = 0;
	272	unsigned long long end_dequeues = 0;
	273	int i, a;
	274
	275	if (argc < 4) {
	276	show_usage(argc, argv);
	277	return -1;
	278	}
	279
	280	err = sscanf(argv[1], "%u", &nr_dequeuers);
	281	if (err != 1) {
	282	show_usage(argc, argv);
	283	return -1;
	284	}
	285
	286	err = sscanf(argv[2], "%u", &nr_enqueuers);
	287	if (err != 1) {
	288	show_usage(argc, argv);
	289	return -1;
	290	}
	291
	292	err = sscanf(argv[3], "%lu", &duration);
	293	if (err != 1) {
	294	show_usage(argc, argv);
	295	return -1;
	296	}
	297
	298	for (i = 4; i < argc; i++) {
	299	if (argv[i][0] != '-')
	300	continue;
	301	switch (argv[i][1]) {
	302	case 'a':
	303	if (argc < i + 2) {
	304	show_usage(argc, argv);
	305	return -1;
	306	}
	307	a = atoi(argv[++i]);
	308	cpu_affinities[next_aff++] = a;
	309	use_affinity = 1;
310	printf_verbose("Adding CPU %d affinity\n", a);
311	break;
312	case 'c':
313	if (argc < i + 2) {
314	show_usage(argc, argv);
315	return -1;
316	}
317	rduration = atol(argv[++i]);
318	break;
319	case 'd':
320	if (argc < i + 2) {
321	show_usage(argc, argv);
322	return -1;
323	}
324	wdelay = atol(argv[++i]);
325	break;
326	case 'v':
327	verbose_mode = 1;
328	break;
329	}
330	}
331
332	printf_verbose("running test for %lu seconds, %u enqueuers, "
333	"%u dequeuers.\n",
334	duration, nr_enqueuers, nr_dequeuers);
335	printf_verbose("Writer delay : %lu loops.\n", rduration);
336	printf_verbose("Reader duration : %lu loops.\n", wdelay);
337	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
338	"main", pthread_self(), (unsigned long)gettid());
339
340	tid_enqueuer = malloc(sizeof(tid_enqueuer) nr_enqueuers);
341	tid_dequeuer = malloc(sizeof(tid_dequeuer) nr_dequeuers);
342	count_enqueuer = malloc(2 * sizeof(count_enqueuer) nr_enqueuers);
343	count_dequeuer = malloc(2 * sizeof(count_dequeuer) nr_dequeuers);
16aa9ee8	344	cds_wfs_init(&s);
a5eb5ffc MD	345
	346	next_aff = 0;
	347
	348	for (i = 0; i < nr_enqueuers; i++) {
	349	err = pthread_create(&tid_enqueuer[i], NULL, thr_enqueuer,
	350	&count_enqueuer[2 * i]);
	351	if (err != 0)
	352	exit(1);
	353	}
	354	for (i = 0; i < nr_dequeuers; i++) {
	355	err = pthread_create(&tid_dequeuer[i], NULL, thr_dequeuer,
	356	&count_dequeuer[2 * i]);
	357	if (err != 0)
	358	exit(1);
	359	}
	360
5481ddb3	361	cmm_smp_mb();
a5eb5ffc MD	362
	363	test_go = 1;
	364
	365	for (i = 0; i < duration; i++) {
	366	sleep(1);
	367	if (verbose_mode)
	368	write (1, ".", 1);
	369	}
	370
	371	test_stop = 1;
	372
	373	for (i = 0; i < nr_enqueuers; i++) {
	374	err = pthread_join(tid_enqueuer[i], &tret);
	375	if (err != 0)
	376	exit(1);
	377	tot_enqueues += count_enqueuer[2 * i];
	378	tot_successful_enqueues += count_enqueuer[2 * i + 1];
	379	}
	380	for (i = 0; i < nr_dequeuers; i++) {
	381	err = pthread_join(tid_dequeuer[i], &tret);
	382	if (err != 0)
	383	exit(1);
	384	tot_dequeues += count_dequeuer[2 * i];
	385	tot_successful_dequeues += count_dequeuer[2 * i + 1];
	386	}
	387
	388	test_end(&s, &end_dequeues);
	389
	390	printf_verbose("total number of enqueues : %llu, dequeues %llu\n",
	391	tot_enqueues, tot_dequeues);
	392	printf_verbose("total number of successful enqueues : %llu, "
	393	"successful dequeues %llu\n",
	394	tot_successful_enqueues, tot_successful_dequeues);
	395	printf("SUMMARY %-25s testdur %4lu nr_enqueuers %3u wdelay %6lu "
	396	"nr_dequeuers %3u "
	397	"rdur %6lu nr_enqueues %12llu nr_dequeues %12llu "
	398	"successful enqueues %12llu successful dequeues %12llu "
	399	"end_dequeues %llu nr_ops %12llu\n",
	400	argv[0], duration, nr_enqueuers, wdelay,
	401	nr_dequeuers, rduration, tot_enqueues, tot_dequeues,
	402	tot_successful_enqueues,
	403	tot_successful_dequeues, end_dequeues,
	404	tot_enqueues + tot_dequeues);
	405	if (tot_successful_enqueues != tot_successful_dequeues + end_dequeues)
	406	printf("WARNING! Discrepancy between nr succ. enqueues %llu vs "
	407	"succ. dequeues + end dequeues %llu.\n",
	408	tot_successful_enqueues,
	409	tot_successful_dequeues + end_dequeues);
	410
	411	free(count_enqueuer);
	412	free(count_dequeuer);
	413	free(tid_enqueuer);
	414	free(tid_dequeuer);
	415	return 0;
	416	}