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

/*
 * test_urcu_assign.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"
#include "../common/debug-yield.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 volatile int test_go, test_stop;

static unsigned long wdelay;

static struct test_array *test_rcu_pointer;

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 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);
	}
}

/*
 * malloc/free are reusing memory areas too quickly, which does not let us
 * test races appropriately. Use a large circular array for allocations.
 * ARRAY_SIZE is larger than nr_writers, and we keep the mutex across
 * both alloc and free, which insures we never run over our tail.
 */
#define ARRAY_SIZE (1048576 * nr_writers)
#define ARRAY_POISON 0xDEADBEEF
static int array_index;
static struct test_array *test_array;

static struct test_array *test_array_alloc(void)
{
	struct test_array *ret;
	int index;

	index = array_index % ARRAY_SIZE;
	assert(test_array[index].a == ARRAY_POISON ||
		test_array[index].a == 0);
	ret = &test_array[index];
	array_index++;
	if (array_index == ARRAY_SIZE)
		array_index = 0;
	return ret;
}

static void test_array_free(struct test_array *ptr)
{
	if (!ptr)
		return;
	ptr->a = ARRAY_POISON;
}

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

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

	set_affinity();

	rcu_register_thread();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		rcu_read_lock();
		local_ptr = rcu_dereference(test_rcu_pointer);
		rcu_debug_yield_read();
		if (local_ptr)
			assert(local_ptr->a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		rcu_read_unlock();
		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	rcu_unregister_thread();

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

}

void *thr_writer(void *_count)
{
	unsigned long long *count = _count;
	struct test_array *new, *old;

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		rcu_copy_mutex_lock();
		new = test_array_alloc();
		new->a = 8;
		old = test_rcu_pointer;
		rcu_assign_pointer(test_rcu_pointer, new);
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		synchronize_rcu();
		if (old)
			old->a = 0;
		test_array_free(old);
		rcu_copy_mutex_unlock();
		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());
	*count = 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("	[-r] [-w] (yield reader and/or writer)\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;
	}

	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 'r':
			rcu_debug_yield_enable(RCU_YIELD_READ);
			break;
		case 'w':
			rcu_debug_yield_enable(RCU_YIELD_WRITE);
			break;
		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());

	test_array = calloc(1, sizeof(*test_array) * ARRAY_SIZE);
	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));

	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);
	test_array_free(test_rcu_pointer);
	free(test_array);
	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	return 0;
}
Commit	Line	Data
074d8438 MD	1	/*
	2	* test_urcu_assign.c
	3	*
	4	* Userspace RCU library - test program
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
074d8438 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"
074d8438 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>
074d8438 MD	35
074d8438 MD	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
2953b501	38	#include "cpuset.h"
94df6318	39	#include "thread-id.h"
2650042a	40	#include "../common/debug-yield.h"
65fcc7e9	41
074d8438 MD	42	/* hardcoded number of CPUs */
	43	#define NR_CPUS 16384
	44
074d8438 MD	45	#ifndef DYNAMIC_LINK_TEST
074d8438 MD	46	#define _LGPL_SOURCE
074d8438 MD	47	#endif
	48	#include <urcu.h>
	49
	50	struct test_array {
	51	int a;
	52	};
	53
	54	static volatile int test_go, test_stop;
	55
	56	static unsigned long wdelay;
	57
	58	static struct test_array *test_rcu_pointer;
	59
	60	static unsigned long duration;
	61
	62	/* read-side C.S. duration, in loops */
	63	static unsigned long rduration;
	64
31b598e0 MD	65	/* write-side C.S. duration, in loops */
	66	static unsigned long wduration;
	67
ab0aacbe	68	static inline void loop_sleep(unsigned long loops)
074d8438	69	{
ab0aacbe	70	while (loops-- != 0)
06f22bdb	71	caa_cpu_relax();
074d8438 MD	72	}
	73
	74	static int verbose_mode;
	75
	76	#define printf_verbose(fmt, args...) \
	77	do { \
	78	if (verbose_mode) \
	79	printf(fmt, args); \
	80	} while (0)
	81
	82	static unsigned int cpu_affinities[NR_CPUS];
	83	static unsigned int next_aff = 0;
	84	static int use_affinity = 0;
	85
	86	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	87
	88	static void set_affinity(void)
	89	{
95bc7fb9	90	#if HAVE_SCHED_SETAFFINITY
074d8438	91	cpu_set_t mask;
95bc7fb9 MD	92	int cpu, ret;
95bc7fb9 MD	93	#endif /* HAVE_SCHED_SETAFFINITY */
074d8438 MD	94
	95	if (!use_affinity)
	96	return;
	97
d8540fc5	98	#if HAVE_SCHED_SETAFFINITY
074d8438 MD	99	ret = pthread_mutex_lock(&affinity_mutex);
	100	if (ret) {
	101	perror("Error in pthread mutex lock");
	102	exit(-1);
	103	}
	104	cpu = cpu_affinities[next_aff++];
	105	ret = pthread_mutex_unlock(&affinity_mutex);
	106	if (ret) {
	107	perror("Error in pthread mutex unlock");
	108	exit(-1);
	109	}
d8540fc5	110
074d8438 MD	111	CPU_ZERO(&mask);
074d8438 MD	112	CPU_SET(cpu, &mask);
d8540fc5 PA	113	#if SCHED_SETAFFINITY_ARGS == 2
	114	sched_setaffinity(0, &mask);
	115	#else
074d8438	116	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	117	#endif
d8540fc5 PA	118	#endif /* HAVE_SCHED_SETAFFINITY */
074d8438 MD	119	}
	120
	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);
074d8438 MD	136
	137	static unsigned int nr_readers;
	138	static unsigned int nr_writers;
	139
	140	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	141
	142	void rcu_copy_mutex_lock(void)
	143	{
	144	int ret;
	145	ret = pthread_mutex_lock(&rcu_copy_mutex);
	146	if (ret) {
	147	perror("Error in pthread mutex lock");
	148	exit(-1);
	149	}
	150	}
	151
	152	void rcu_copy_mutex_unlock(void)
	153	{
	154	int ret;
	155
	156	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	157	if (ret) {
	158	perror("Error in pthread mutex unlock");
	159	exit(-1);
	160	}
	161	}
	162
	163	/*
	164	* malloc/free are reusing memory areas too quickly, which does not let us
	165	* test races appropriately. Use a large circular array for allocations.
d4267b0b MD	166	* ARRAY_SIZE is larger than nr_writers, and we keep the mutex across
d4267b0b MD	167	* both alloc and free, which insures we never run over our tail.
074d8438 MD	168	*/
	169	#define ARRAY_SIZE (1048576 * nr_writers)
	170	#define ARRAY_POISON 0xDEADBEEF
	171	static int array_index;
	172	static struct test_array *test_array;
	173
	174	static struct test_array *test_array_alloc(void)
	175	{
	176	struct test_array *ret;
	177	int index;
	178
074d8438 MD	179	index = array_index % ARRAY_SIZE;
	180	assert(test_array[index].a == ARRAY_POISON \|\|
	181	test_array[index].a == 0);
	182	ret = &test_array[index];
	183	array_index++;
	184	if (array_index == ARRAY_SIZE)
	185	array_index = 0;
074d8438 MD	186	return ret;
	187	}
	188
	189	static void test_array_free(struct test_array *ptr)
	190	{
	191	if (!ptr)
	192	return;
074d8438	193	ptr->a = ARRAY_POISON;
074d8438 MD	194	}
	195
	196	void thr_reader(void _count)
	197	{
	198	unsigned long long *count = _count;
	199	struct test_array *local_ptr;
	200
94df6318 MD	201	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	202	"reader", urcu_get_thread_id());
074d8438 MD	203
	204	set_affinity();
	205
	206	rcu_register_thread();
	207
	208	while (!test_go)
	209	{
	210	}
5481ddb3	211	cmm_smp_mb();
074d8438 MD	212
	213	for (;;) {
	214	rcu_read_lock();
	215	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	216	rcu_debug_yield_read();
074d8438 MD	217	if (local_ptr)
074d8438 MD	218	assert(local_ptr->a == 8);
a0b7f7ea	219	if (caa_unlikely(rduration))
074d8438 MD	220	loop_sleep(rduration);
074d8438 MD	221	rcu_read_unlock();
bd252a04	222	URCU_TLS(nr_reads)++;
a0b7f7ea	223	if (caa_unlikely(!test_duration_read()))
074d8438 MD	224	break;
	225	}
	226
	227	rcu_unregister_thread();
	228
bd252a04	229	*count = URCU_TLS(nr_reads);
94df6318 MD	230	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	231	"reader", urcu_get_thread_id());
074d8438 MD	232	return ((void*)1);
	233
	234	}
	235
	236	void thr_writer(void _count)
	237	{
	238	unsigned long long *count = _count;
	239	struct test_array new, old;
	240
94df6318 MD	241	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	242	"writer", urcu_get_thread_id());
074d8438 MD	243
	244	set_affinity();
	245
	246	while (!test_go)
	247	{
	248	}
5481ddb3	249	cmm_smp_mb();
074d8438 MD	250
074d8438 MD	251	for (;;) {
d4267b0b	252	rcu_copy_mutex_lock();
074d8438 MD	253	new = test_array_alloc();
074d8438 MD	254	new->a = 8;
074d8438 MD	255	old = test_rcu_pointer;
074d8438 MD	256	rcu_assign_pointer(test_rcu_pointer, new);
a0b7f7ea	257	if (caa_unlikely(wduration))
31b598e0	258	loop_sleep(wduration);
074d8438 MD	259	synchronize_rcu();
	260	if (old)
	261	old->a = 0;
	262	test_array_free(old);
d4267b0b	263	rcu_copy_mutex_unlock();
bd252a04	264	URCU_TLS(nr_writes)++;
a0b7f7ea	265	if (caa_unlikely(!test_duration_write()))
074d8438	266	break;
a0b7f7ea	267	if (caa_unlikely(wdelay))
074d8438 MD	268	loop_sleep(wdelay);
	269	}
	270
94df6318 MD	271	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	272	"writer", urcu_get_thread_id());
bd252a04	273	*count = URCU_TLS(nr_writes);
074d8438 MD	274	return ((void*)2);
	275	}
	276
	277	void show_usage(int argc, char **argv)
	278	{
06637138 MD	279	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	280	argv[0]);
	281	printf("OPTIONS:\n");
06637138	282	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	283	printf(" [-d delay] (writer period (us))\n");
	284	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	285	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	286	printf(" [-v] (verbose output)\n");
	287	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
074d8438 MD	288	printf("\n");
	289	}
	290
	291	int main(int argc, char **argv)
	292	{
	293	int err;
	294	pthread_t tid_reader, tid_writer;
	295	void *tret;
	296	unsigned long long count_reader, count_writer;
	297	unsigned long long tot_reads = 0, tot_writes = 0;
	298	int i, a;
	299
	300	if (argc < 4) {
	301	show_usage(argc, argv);
	302	return -1;
	303	}
	304
	305	err = sscanf(argv[1], "%u", &nr_readers);
	306	if (err != 1) {
	307	show_usage(argc, argv);
	308	return -1;
	309	}
	310
	311	err = sscanf(argv[2], "%u", &nr_writers);
	312	if (err != 1) {
	313	show_usage(argc, argv);
	314	return -1;
	315	}
	316
	317	err = sscanf(argv[3], "%lu", &duration);
	318	if (err != 1) {
	319	show_usage(argc, argv);
	320	return -1;
	321	}
	322
	323	for (i = 4; i < argc; i++) {
	324	if (argv[i][0] != '-')
	325	continue;
	326	switch (argv[i][1]) {
074d8438	327	case 'r':
2650042a	328	rcu_debug_yield_enable(RCU_YIELD_READ);
074d8438 MD	329	break;
074d8438 MD	330	case 'w':
2650042a	331	rcu_debug_yield_enable(RCU_YIELD_WRITE);
074d8438	332	break;
074d8438 MD	333	case 'a':
	334	if (argc < i + 2) {
	335	show_usage(argc, argv);
	336	return -1;
	337	}
	338	a = atoi(argv[++i]);
	339	cpu_affinities[next_aff++] = a;
	340	use_affinity = 1;
	341	printf_verbose("Adding CPU %d affinity\n", a);
	342	break;
	343	case 'c':
	344	if (argc < i + 2) {
	345	show_usage(argc, argv);
	346	return -1;
	347	}
	348	rduration = atol(argv[++i]);
	349	break;
	350	case 'd':
	351	if (argc < i + 2) {
	352	show_usage(argc, argv);
	353	return -1;
	354	}
	355	wdelay = atol(argv[++i]);
	356	break;
31b598e0 MD	357	case 'e':
	358	if (argc < i + 2) {
	359	show_usage(argc, argv);
	360	return -1;
	361	}
	362	wduration = atol(argv[++i]);
	363	break;
074d8438 MD	364	case 'v':
	365	verbose_mode = 1;
	366	break;
	367	}
	368	}
	369
	370	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	371	duration, nr_readers, nr_writers);
	372	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	373	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	374	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	375	"main", urcu_get_thread_id());
074d8438	376
92e8d9d6	377	test_array = calloc(1, sizeof(test_array) ARRAY_SIZE);
9aa14175 MD	378	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	379	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	380	count_reader = calloc(nr_readers, sizeof(*count_reader));
	381	count_writer = calloc(nr_writers, sizeof(*count_writer));
074d8438 MD	382
	383	next_aff = 0;
	384
	385	for (i = 0; i < nr_readers; i++) {
	386	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	387	&count_reader[i]);
	388	if (err != 0)
	389	exit(1);
	390	}
	391	for (i = 0; i < nr_writers; i++) {
	392	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	393	&count_writer[i]);
	394	if (err != 0)
	395	exit(1);
	396	}
	397
5481ddb3	398	cmm_smp_mb();
074d8438 MD	399
	400	test_go = 1;
	401
	402	sleep(duration);
	403
	404	test_stop = 1;
	405
	406	for (i = 0; i < nr_readers; i++) {
	407	err = pthread_join(tid_reader[i], &tret);
	408	if (err != 0)
	409	exit(1);
	410	tot_reads += count_reader[i];
	411	}
	412	for (i = 0; i < nr_writers; i++) {
	413	err = pthread_join(tid_writer[i], &tret);
	414	if (err != 0)
	415	exit(1);
	416	tot_writes += count_writer[i];
	417	}
	418
	419	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	420	tot_writes);
a50a7b43	421	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
074d8438 MD	422	"nr_writers %3u "
074d8438 MD	423	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	424	argv[0], duration, nr_readers, rduration, wduration,
074d8438 MD	425	nr_writers, wdelay, tot_reads, tot_writes,
	426	tot_reads + tot_writes);
	427	test_array_free(test_rcu_pointer);
	428	free(test_array);
	429	free(tid_reader);
	430	free(tid_writer);
	431	free(count_reader);
	432	free(count_writer);
	433	return 0;
	434	}