[userspace-rcu.git] / tests / benchmark / test_urcu_defer.c

/*
 * test_urcu_defer.c
 *
 * Userspace RCU library - test program (with automatic reclamation)
 *
 * 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
#else
#define rcu_debug_yield_read()
#endif
#include <urcu.h>
#include <urcu-defer.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 long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;

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 *_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);

}

static void test_cb2(void *data)
{
}

static void test_cb1(void *data)
{
}

void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
	struct test_array *new, *old = NULL;
	int ret;

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

	set_affinity();

	ret = rcu_defer_register_thread();
	if (ret) {
		printf("Error in rcu_defer_register_thread\n");
		exit(-1);
	}

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		new = malloc(sizeof(*new));
		new->a = 8;
		old = rcu_xchg_pointer(&test_rcu_pointer, new);
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		defer_rcu(free, old);
		defer_rcu(test_cb1, old);
		defer_rcu(test_cb1, (void *)-2L);
		defer_rcu(test_cb1, (void *)-2L);
		defer_rcu(test_cb1, old);
		defer_rcu(test_cb2, (void *)-2L);
		defer_rcu(test_cb2, (void *)-4L);
		defer_rcu(test_cb2, (void *)-2L);
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	rcu_defer_unregister_thread();

	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");
#ifdef DEBUG_YIELD
	printf("	[-r] [-w] (yield reader and/or writer)\n");
#endif
	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;
	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]) {
#ifdef DEBUG_YIELD
		case 'r':
			rcu_yield_active |= RCU_YIELD_READ;
			break;
		case 'w':
			rcu_yield_active |= RCU_YIELD_WRITE;
			break;
#endif
		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));
	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,
				     &count_reader[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 += count_reader[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(tot_nr_writes);

	return 0;
}
Commit	Line	Data
90075a50	1	/*
786ee85b	2	* test_urcu_defer.c
90075a50 MD	3	*
	4	* Userspace RCU library - test program (with automatic reclamation)
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
90075a50 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"
90075a50 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>
90075a50	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
90075a50 MD	41	/* hardcoded number of CPUs */
	42	#define NR_CPUS 16384
	43
90075a50 MD	44	#ifndef DYNAMIC_LINK_TEST
	45	#define _LGPL_SOURCE
	46	#else
1de4df4b	47	#define rcu_debug_yield_read()
90075a50	48	#endif
ec4e58a3 MD	49	#include <urcu.h>
ec4e58a3 MD	50	#include <urcu-defer.h>
90075a50 MD	51
	52	struct test_array {
	53	int a;
	54	};
	55
	56	static volatile int test_go, test_stop;
	57
	58	static unsigned long wdelay;
	59
	60	static struct test_array *test_rcu_pointer;
	61
	62	static unsigned long duration;
	63
	64	/* read-side C.S. duration, in loops */
	65	static unsigned long rduration;
	66
31b598e0 MD	67	/* write-side C.S. duration, in loops */
	68	static unsigned long wduration;
	69
ab0aacbe	70	static inline void loop_sleep(unsigned long loops)
90075a50	71	{
ab0aacbe	72	while (loops-- != 0)
06f22bdb	73	caa_cpu_relax();
90075a50 MD	74	}
	75
	76	static int verbose_mode;
	77
	78	#define printf_verbose(fmt, args...) \
	79	do { \
	80	if (verbose_mode) \
	81	printf(fmt, args); \
	82	} while (0)
	83
	84	static unsigned int cpu_affinities[NR_CPUS];
	85	static unsigned int next_aff = 0;
	86	static int use_affinity = 0;
	87
	88	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	89
	90	static void set_affinity(void)
	91	{
95bc7fb9	92	#if HAVE_SCHED_SETAFFINITY
90075a50	93	cpu_set_t mask;
95bc7fb9 MD	94	int cpu, ret;
95bc7fb9 MD	95	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	96
	97	if (!use_affinity)
	98	return;
	99
d8540fc5	100	#if HAVE_SCHED_SETAFFINITY
90075a50 MD	101	ret = pthread_mutex_lock(&affinity_mutex);
	102	if (ret) {
	103	perror("Error in pthread mutex lock");
	104	exit(-1);
	105	}
	106	cpu = cpu_affinities[next_aff++];
	107	ret = pthread_mutex_unlock(&affinity_mutex);
	108	if (ret) {
	109	perror("Error in pthread mutex unlock");
	110	exit(-1);
	111	}
d8540fc5	112
90075a50 MD	113	CPU_ZERO(&mask);
90075a50 MD	114	CPU_SET(cpu, &mask);
d8540fc5 PA	115	#if SCHED_SETAFFINITY_ARGS == 2
	116	sched_setaffinity(0, &mask);
	117	#else
90075a50	118	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	119	#endif
d8540fc5 PA	120	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	121	}
	122
	123	/*
	124	* returns 0 if test should end.
	125	*/
	126	static int test_duration_write(void)
	127	{
	128	return !test_stop;
	129	}
	130
	131	static int test_duration_read(void)
	132	{
	133	return !test_stop;
	134	}
	135
bd252a04 MD	136	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	137	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
90075a50 MD	138
90075a50 MD	139	static
06f22bdb	140	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
90075a50 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 _count)
	169	{
	170	unsigned long long *count = _count;
	171	struct test_array *local_ptr;
	172
94df6318 MD	173	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	174	"reader", urcu_get_thread_id());
90075a50 MD	175
	176	set_affinity();
	177
	178	rcu_register_thread();
	179
	180	while (!test_go)
	181	{
	182	}
5481ddb3	183	cmm_smp_mb();
90075a50 MD	184
	185	for (;;) {
	186	rcu_read_lock();
	187	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	188	rcu_debug_yield_read();
90075a50 MD	189	if (local_ptr)
90075a50 MD	190	assert(local_ptr->a == 8);
a0b7f7ea	191	if (caa_unlikely(rduration))
90075a50 MD	192	loop_sleep(rduration);
90075a50 MD	193	rcu_read_unlock();
bd252a04	194	URCU_TLS(nr_reads)++;
a0b7f7ea	195	if (caa_unlikely(!test_duration_read()))
90075a50 MD	196	break;
	197	}
	198
	199	rcu_unregister_thread();
	200
bd252a04	201	*count = URCU_TLS(nr_reads);
94df6318 MD	202	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	203	"reader", urcu_get_thread_id());
90075a50 MD	204	return ((void*)1);
	205
	206	}
	207
804b4375 MD	208	static void test_cb2(void *data)
	209	{
	210	}
	211
	212	static void test_cb1(void *data)
	213	{
	214	}
	215
90075a50 MD	216	void thr_writer(void data)
	217	{
	218	unsigned long wtidx = (unsigned long)data;
	219	struct test_array new, old = NULL;
6ade67d5	220	int ret;
90075a50	221
94df6318 MD	222	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	223	"writer", urcu_get_thread_id());
90075a50 MD	224
	225	set_affinity();
	226
6ade67d5 MD	227	ret = rcu_defer_register_thread();
	228	if (ret) {
	229	printf("Error in rcu_defer_register_thread\n");
	230	exit(-1);
	231	}
90075a50 MD	232
	233	while (!test_go)
	234	{
	235	}
5481ddb3	236	cmm_smp_mb();
90075a50 MD	237
	238	for (;;) {
	239	new = malloc(sizeof(*new));
	240	new->a = 8;
	241	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	242	if (caa_unlikely(wduration))
31b598e0	243	loop_sleep(wduration);
b4f313b7 MD	244	defer_rcu(free, old);
	245	defer_rcu(test_cb1, old);
	246	defer_rcu(test_cb1, (void *)-2L);
	247	defer_rcu(test_cb1, (void *)-2L);
	248	defer_rcu(test_cb1, old);
	249	defer_rcu(test_cb2, (void *)-2L);
	250	defer_rcu(test_cb2, (void *)-4L);
	251	defer_rcu(test_cb2, (void *)-2L);
bd252a04	252	URCU_TLS(nr_writes)++;
a0b7f7ea	253	if (caa_unlikely(!test_duration_write()))
90075a50	254	break;
a0b7f7ea	255	if (caa_unlikely(wdelay))
90075a50 MD	256	loop_sleep(wdelay);
	257	}
	258
786ee85b	259	rcu_defer_unregister_thread();
90075a50	260
94df6318 MD	261	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	262	"writer", urcu_get_thread_id());
bd252a04	263	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
90075a50 MD	264	return ((void*)2);
	265	}
	266
	267	void show_usage(int argc, char **argv)
	268	{
06637138 MD	269	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	270	argv[0]);
	271	printf("OPTIONS:\n");
90075a50	272	#ifdef DEBUG_YIELD
06637138	273	printf(" [-r] [-w] (yield reader and/or writer)\n");
90075a50	274	#endif
06637138 MD	275	printf(" [-d delay] (writer period (us))\n");
	276	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	277	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	278	printf(" [-v] (verbose output)\n");
	279	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
90075a50 MD	280	printf("\n");
	281	}
	282
	283	int main(int argc, char **argv)
	284	{
	285	int err;
	286	pthread_t tid_reader, tid_writer;
	287	void *tret;
	288	unsigned long long *count_reader;
	289	unsigned long long tot_reads = 0, tot_writes = 0;
	290	int i, a;
	291
	292	if (argc < 4) {
	293	show_usage(argc, argv);
	294	return -1;
	295	}
	296
	297	err = sscanf(argv[1], "%u", &nr_readers);
	298	if (err != 1) {
	299	show_usage(argc, argv);
	300	return -1;
	301	}
	302
	303	err = sscanf(argv[2], "%u", &nr_writers);
	304	if (err != 1) {
	305	show_usage(argc, argv);
	306	return -1;
	307	}
	308
	309	err = sscanf(argv[3], "%lu", &duration);
	310	if (err != 1) {
	311	show_usage(argc, argv);
	312	return -1;
	313	}
	314
	315	for (i = 4; i < argc; i++) {
	316	if (argv[i][0] != '-')
	317	continue;
	318	switch (argv[i][1]) {
	319	#ifdef DEBUG_YIELD
	320	case 'r':
1de4df4b	321	rcu_yield_active \|= RCU_YIELD_READ;
90075a50 MD	322	break;
90075a50 MD	323	case 'w':
1de4df4b	324	rcu_yield_active \|= RCU_YIELD_WRITE;
90075a50 MD	325	break;
	326	#endif
	327	case 'a':
	328	if (argc < i + 2) {
	329	show_usage(argc, argv);
	330	return -1;
	331	}
	332	a = atoi(argv[++i]);
	333	cpu_affinities[next_aff++] = a;
	334	use_affinity = 1;
	335	printf_verbose("Adding CPU %d affinity\n", a);
	336	break;
	337	case 'c':
	338	if (argc < i + 2) {
	339	show_usage(argc, argv);
	340	return -1;
	341	}
	342	rduration = atol(argv[++i]);
	343	break;
	344	case 'd':
	345	if (argc < i + 2) {
	346	show_usage(argc, argv);
	347	return -1;
	348	}
	349	wdelay = atol(argv[++i]);
	350	break;
31b598e0 MD	351	case 'e':
	352	if (argc < i + 2) {
	353	show_usage(argc, argv);
	354	return -1;
	355	}
	356	wduration = atol(argv[++i]);
	357	break;
90075a50 MD	358	case 'v':
	359	verbose_mode = 1;
	360	break;
	361	}
	362	}
	363
	364	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	365	duration, nr_readers, nr_writers);
	366	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	367	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	368	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	369	"main", urcu_get_thread_id());
90075a50	370
9aa14175 MD	371	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	372	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	373	count_reader = calloc(nr_readers, sizeof(*count_reader));
	374	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
90075a50 MD	375
	376	next_aff = 0;
	377
	378	for (i = 0; i < nr_readers; i++) {
	379	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	380	&count_reader[i]);
	381	if (err != 0)
	382	exit(1);
	383	}
	384	for (i = 0; i < nr_writers; i++) {
	385	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	386	(void *)(long)i);
	387	if (err != 0)
	388	exit(1);
	389	}
	390
5481ddb3	391	cmm_smp_mb();
90075a50 MD	392
	393	test_go = 1;
	394
	395	sleep(duration);
	396
	397	test_stop = 1;
	398
	399	for (i = 0; i < nr_readers; i++) {
	400	err = pthread_join(tid_reader[i], &tret);
	401	if (err != 0)
	402	exit(1);
	403	tot_reads += count_reader[i];
	404	}
	405	for (i = 0; i < nr_writers; i++) {
	406	err = pthread_join(tid_writer[i], &tret);
	407	if (err != 0)
	408	exit(1);
	409	tot_writes += tot_nr_writes[i];
	410	}
	411
	412	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	413	tot_writes);
a50a7b43	414	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
90075a50 MD	415	"nr_writers %3u "
90075a50 MD	416	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	417	argv[0], duration, nr_readers, rduration, wduration,
90075a50 MD	418	nr_writers, wdelay, tot_reads, tot_writes,
	419	tot_reads + tot_writes);
	420	free(tid_reader);
	421	free(tid_writer);
	422	free(count_reader);
	423	free(tot_nr_writes);
	424
	425	return 0;
	426	}