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

/*
 * test_urcu.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.
 */

#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-bp.h>

static volatile int test_go, test_stop;

static unsigned long wdelay;

static int *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);
	}
}

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

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

	set_affinity();

	rcu_register_thread();
	assert(!rcu_read_ongoing());

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		rcu_read_lock();
		assert(rcu_read_ongoing());
		local_ptr = rcu_dereference(test_rcu_pointer);
		rcu_debug_yield_read();
		if (local_ptr)
			assert(*local_ptr == 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;
	int *new, *old;

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		new = malloc(sizeof(int));
		*new = 8;
		old = rcu_xchg_pointer(&test_rcu_pointer, new);
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		synchronize_rcu();
		if (old)
			*old = 0;
		free(old);
		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());

	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);
	free(test_rcu_pointer);
	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	return 0;
}
Commit	Line	Data
fdee2e6d MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
fdee2e6d 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
fdee2e6d MD	23	#include <stdio.h>
	24	#include <pthread.h>
	25	#include <stdlib.h>
	26	#include <string.h>
	27	#include <sys/types.h>
	28	#include <sys/wait.h>
	29	#include <unistd.h>
	30	#include <stdio.h>
	31	#include <assert.h>
94b343fd	32	#include <errno.h>
fdee2e6d MD	33
fdee2e6d MD	34	#include <urcu/arch.h>
bd252a04	35	#include <urcu/tls-compat.h>
2953b501	36	#include "cpuset.h"
94df6318	37	#include "thread-id.h"
2650042a	38	#include "../common/debug-yield.h"
65fcc7e9	39
fdee2e6d MD	40	/* hardcoded number of CPUs */
	41	#define NR_CPUS 16384
	42
fdee2e6d MD	43	#ifndef DYNAMIC_LINK_TEST
fdee2e6d MD	44	#define _LGPL_SOURCE
fdee2e6d MD	45	#endif
	46	#include <urcu-bp.h>
	47
fdee2e6d MD	48	static volatile int test_go, test_stop;
	49
	50	static unsigned long wdelay;
	51
bcc74df3	52	static int *test_rcu_pointer;
fdee2e6d MD	53
	54	static unsigned long duration;
	55
	56	/* read-side C.S. duration, in loops */
	57	static unsigned long rduration;
	58
31b598e0 MD	59	/* write-side C.S. duration, in loops */
	60	static unsigned long wduration;
	61
ab0aacbe	62	static inline void loop_sleep(unsigned long loops)
fdee2e6d	63	{
ab0aacbe	64	while (loops-- != 0)
06f22bdb	65	caa_cpu_relax();
fdee2e6d MD	66	}
	67
	68	static int verbose_mode;
	69
	70	#define printf_verbose(fmt, args...) \
	71	do { \
	72	if (verbose_mode) \
	73	printf(fmt, args); \
	74	} while (0)
	75
	76	static unsigned int cpu_affinities[NR_CPUS];
	77	static unsigned int next_aff = 0;
	78	static int use_affinity = 0;
	79
	80	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	81
	82	static void set_affinity(void)
	83	{
95bc7fb9	84	#if HAVE_SCHED_SETAFFINITY
fdee2e6d	85	cpu_set_t mask;
95bc7fb9 MD	86	int cpu, ret;
95bc7fb9 MD	87	#endif /* HAVE_SCHED_SETAFFINITY */
fdee2e6d MD	88
	89	if (!use_affinity)
	90	return;
	91
d8540fc5	92	#if HAVE_SCHED_SETAFFINITY
fdee2e6d MD	93	ret = pthread_mutex_lock(&affinity_mutex);
	94	if (ret) {
	95	perror("Error in pthread mutex lock");
	96	exit(-1);
	97	}
	98	cpu = cpu_affinities[next_aff++];
	99	ret = pthread_mutex_unlock(&affinity_mutex);
	100	if (ret) {
	101	perror("Error in pthread mutex unlock");
	102	exit(-1);
	103	}
d8540fc5	104
fdee2e6d MD	105	CPU_ZERO(&mask);
fdee2e6d MD	106	CPU_SET(cpu, &mask);
d8540fc5 PA	107	#if SCHED_SETAFFINITY_ARGS == 2
	108	sched_setaffinity(0, &mask);
	109	#else
fdee2e6d	110	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	111	#endif
d8540fc5 PA	112	#endif /* HAVE_SCHED_SETAFFINITY */
fdee2e6d MD	113	}
	114
	115	/*
	116	* returns 0 if test should end.
	117	*/
	118	static int test_duration_write(void)
	119	{
	120	return !test_stop;
	121	}
	122
	123	static int test_duration_read(void)
	124	{
	125	return !test_stop;
	126	}
	127
bd252a04 MD	128	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	129	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
fdee2e6d MD	130
	131	static unsigned int nr_readers;
	132	static unsigned int nr_writers;
	133
	134	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	135
	136	void rcu_copy_mutex_lock(void)
	137	{
	138	int ret;
	139	ret = pthread_mutex_lock(&rcu_copy_mutex);
	140	if (ret) {
	141	perror("Error in pthread mutex lock");
	142	exit(-1);
	143	}
	144	}
	145
	146	void rcu_copy_mutex_unlock(void)
	147	{
	148	int ret;
	149
	150	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	151	if (ret) {
	152	perror("Error in pthread mutex unlock");
	153	exit(-1);
	154	}
	155	}
	156
fdee2e6d MD	157	void thr_reader(void _count)
	158	{
	159	unsigned long long *count = _count;
bcc74df3	160	int *local_ptr;
fdee2e6d	161
94df6318 MD	162	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	163	"reader", urcu_get_thread_id());
fdee2e6d MD	164
	165	set_affinity();
	166
	167	rcu_register_thread();
882f3357	168	assert(!rcu_read_ongoing());
fdee2e6d MD	169
	170	while (!test_go)
	171	{
	172	}
5481ddb3	173	cmm_smp_mb();
fdee2e6d MD	174
	175	for (;;) {
	176	rcu_read_lock();
882f3357	177	assert(rcu_read_ongoing());
fdee2e6d	178	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	179	rcu_debug_yield_read();
fdee2e6d	180	if (local_ptr)
bcc74df3	181	assert(*local_ptr == 8);
a0b7f7ea	182	if (caa_unlikely(rduration))
fdee2e6d MD	183	loop_sleep(rduration);
fdee2e6d MD	184	rcu_read_unlock();
bd252a04	185	URCU_TLS(nr_reads)++;
a0b7f7ea	186	if (caa_unlikely(!test_duration_read()))
fdee2e6d MD	187	break;
	188	}
	189
	190	rcu_unregister_thread();
	191
bd252a04	192	*count = URCU_TLS(nr_reads);
94df6318 MD	193	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	194	"reader", urcu_get_thread_id());
fdee2e6d MD	195	return ((void*)1);
	196
	197	}
	198
	199	void thr_writer(void _count)
	200	{
	201	unsigned long long *count = _count;
bcc74df3	202	int new, old;
fdee2e6d	203
94df6318 MD	204	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	205	"writer", urcu_get_thread_id());
fdee2e6d MD	206
	207	set_affinity();
	208
	209	while (!test_go)
	210	{
	211	}
5481ddb3	212	cmm_smp_mb();
fdee2e6d MD	213
fdee2e6d MD	214	for (;;) {
bcc74df3 MD	215	new = malloc(sizeof(int));
bcc74df3 MD	216	*new = 8;
d2835e6f	217	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	218	if (caa_unlikely(wduration))
31b598e0	219	loop_sleep(wduration);
d2835e6f	220	synchronize_rcu();
fdee2e6d	221	if (old)
bcc74df3 MD	222	*old = 0;
bcc74df3 MD	223	free(old);
bd252a04	224	URCU_TLS(nr_writes)++;
a0b7f7ea	225	if (caa_unlikely(!test_duration_write()))
fdee2e6d	226	break;
a0b7f7ea	227	if (caa_unlikely(wdelay))
fdee2e6d MD	228	loop_sleep(wdelay);
	229	}
	230
94df6318 MD	231	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	232	"writer", urcu_get_thread_id());
bd252a04	233	*count = URCU_TLS(nr_writes);
fdee2e6d MD	234	return ((void*)2);
	235	}
	236
	237	void show_usage(int argc, char **argv)
	238	{
06637138 MD	239	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	240	argv[0]);
	241	printf("OPTIONS:\n");
06637138	242	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	243	printf(" [-d delay] (writer period (us))\n");
	244	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	245	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	246	printf(" [-v] (verbose output)\n");
	247	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
fdee2e6d MD	248	printf("\n");
	249	}
	250
	251	int main(int argc, char **argv)
	252	{
	253	int err;
	254	pthread_t tid_reader, tid_writer;
	255	void *tret;
	256	unsigned long long count_reader, count_writer;
	257	unsigned long long tot_reads = 0, tot_writes = 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_readers);
	266	if (err != 1) {
	267	show_usage(argc, argv);
	268	return -1;
	269	}
	270
	271	err = sscanf(argv[2], "%u", &nr_writers);
	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]) {
fdee2e6d	287	case 'r':
2650042a	288	rcu_debug_yield_enable(RCU_YIELD_READ);
fdee2e6d MD	289	break;
fdee2e6d MD	290	case 'w':
2650042a	291	rcu_debug_yield_enable(RCU_YIELD_WRITE);
fdee2e6d	292	break;
fdee2e6d MD	293	case 'a':
	294	if (argc < i + 2) {
	295	show_usage(argc, argv);
	296	return -1;
	297	}
	298	a = atoi(argv[++i]);
	299	cpu_affinities[next_aff++] = a;
	300	use_affinity = 1;
	301	printf_verbose("Adding CPU %d affinity\n", a);
	302	break;
	303	case 'c':
	304	if (argc < i + 2) {
	305	show_usage(argc, argv);
	306	return -1;
	307	}
	308	rduration = atol(argv[++i]);
	309	break;
	310	case 'd':
	311	if (argc < i + 2) {
	312	show_usage(argc, argv);
	313	return -1;
	314	}
	315	wdelay = atol(argv[++i]);
	316	break;
31b598e0 MD	317	case 'e':
	318	if (argc < i + 2) {
	319	show_usage(argc, argv);
	320	return -1;
	321	}
	322	wduration = atol(argv[++i]);
	323	break;
fdee2e6d MD	324	case 'v':
	325	verbose_mode = 1;
	326	break;
	327	}
	328	}
	329
	330	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	331	duration, nr_readers, nr_writers);
	332	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	333	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	334	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	335	"main", urcu_get_thread_id());
fdee2e6d	336
9aa14175 MD	337	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	338	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	339	count_reader = calloc(nr_readers, sizeof(*count_reader));
	340	count_writer = calloc(nr_writers, sizeof(*count_writer));
fdee2e6d MD	341
	342	next_aff = 0;
	343
	344	for (i = 0; i < nr_readers; i++) {
	345	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	346	&count_reader[i]);
	347	if (err != 0)
	348	exit(1);
	349	}
	350	for (i = 0; i < nr_writers; i++) {
	351	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	352	&count_writer[i]);
	353	if (err != 0)
	354	exit(1);
	355	}
	356
5481ddb3	357	cmm_smp_mb();
fdee2e6d MD	358
	359	test_go = 1;
	360
	361	sleep(duration);
	362
	363	test_stop = 1;
	364
	365	for (i = 0; i < nr_readers; i++) {
	366	err = pthread_join(tid_reader[i], &tret);
	367	if (err != 0)
	368	exit(1);
	369	tot_reads += count_reader[i];
	370	}
	371	for (i = 0; i < nr_writers; i++) {
	372	err = pthread_join(tid_writer[i], &tret);
	373	if (err != 0)
	374	exit(1);
	375	tot_writes += count_writer[i];
	376	}
	377
	378	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	379	tot_writes);
a50a7b43	380	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
fdee2e6d MD	381	"nr_writers %3u "
fdee2e6d MD	382	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	383	argv[0], duration, nr_readers, rduration, wduration,
fdee2e6d MD	384	nr_writers, wdelay, tot_reads, tot_writes,
fdee2e6d MD	385	tot_reads + tot_writes);
bcc74df3	386	free(test_rcu_pointer);
fdee2e6d MD	387	free(tid_reader);
	388	free(tid_writer);
	389	free(count_reader);
	390	free(count_writer);
	391	return 0;
	392	}