[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 "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);
	sched_setaffinity(0, sizeof(mask), &mask);
#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;

static
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);

}

static
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);
}

static
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;
	unsigned int i_thr;

	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_thr = 0; i_thr < nr_readers; i_thr++) {
		err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
				     &count_reader[i_thr]);
		if (err != 0)
			exit(1);
	}
	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
		err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
				     &count_writer[i_thr]);
		if (err != 0)
			exit(1);
	}

	cmm_smp_mb();

	test_go = 1;

	sleep(duration);

	test_stop = 1;

	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
		err = pthread_join(tid_reader[i_thr], &tret);
		if (err != 0)
			exit(1);
		tot_reads += count_reader[i_thr];
	}
	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
		err = pthread_join(tid_writer[i_thr], &tret);
		if (err != 0)
			exit(1);
		tot_writes += count_writer[i_thr];
	}

	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>
94df6318	36	#include "thread-id.h"
2650042a	37	#include "../common/debug-yield.h"
65fcc7e9	38
fdee2e6d MD	39	/* hardcoded number of CPUs */
	40	#define NR_CPUS 16384
	41
fdee2e6d MD	42	#ifndef DYNAMIC_LINK_TEST
fdee2e6d MD	43	#define _LGPL_SOURCE
fdee2e6d MD	44	#endif
	45	#include <urcu-bp.h>
	46
fdee2e6d MD	47	static volatile int test_go, test_stop;
	48
	49	static unsigned long wdelay;
	50
bcc74df3	51	static int *test_rcu_pointer;
fdee2e6d MD	52
	53	static unsigned long duration;
	54
	55	/* read-side C.S. duration, in loops */
	56	static unsigned long rduration;
	57
31b598e0 MD	58	/* write-side C.S. duration, in loops */
	59	static unsigned long wduration;
	60
ab0aacbe	61	static inline void loop_sleep(unsigned long loops)
fdee2e6d	62	{
ab0aacbe	63	while (loops-- != 0)
06f22bdb	64	caa_cpu_relax();
fdee2e6d MD	65	}
	66
	67	static int verbose_mode;
	68
	69	#define printf_verbose(fmt, args...) \
	70	do { \
	71	if (verbose_mode) \
	72	printf(fmt, args); \
	73	} while (0)
	74
	75	static unsigned int cpu_affinities[NR_CPUS];
	76	static unsigned int next_aff = 0;
	77	static int use_affinity = 0;
	78
	79	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	80
	81	static void set_affinity(void)
	82	{
95bc7fb9	83	#if HAVE_SCHED_SETAFFINITY
fdee2e6d	84	cpu_set_t mask;
95bc7fb9 MD	85	int cpu, ret;
95bc7fb9 MD	86	#endif /* HAVE_SCHED_SETAFFINITY */
fdee2e6d MD	87
	88	if (!use_affinity)
	89	return;
	90
d8540fc5	91	#if HAVE_SCHED_SETAFFINITY
fdee2e6d MD	92	ret = pthread_mutex_lock(&affinity_mutex);
	93	if (ret) {
	94	perror("Error in pthread mutex lock");
	95	exit(-1);
	96	}
	97	cpu = cpu_affinities[next_aff++];
	98	ret = pthread_mutex_unlock(&affinity_mutex);
	99	if (ret) {
	100	perror("Error in pthread mutex unlock");
	101	exit(-1);
	102	}
d8540fc5	103
fdee2e6d MD	104	CPU_ZERO(&mask);
	105	CPU_SET(cpu, &mask);
	106	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5	107	#endif /* HAVE_SCHED_SETAFFINITY */
fdee2e6d MD	108	}
	109
	110	/*
	111	* returns 0 if test should end.
	112	*/
	113	static int test_duration_write(void)
	114	{
	115	return !test_stop;
	116	}
	117
	118	static int test_duration_read(void)
	119	{
	120	return !test_stop;
	121	}
	122
bd252a04 MD	123	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	124	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
fdee2e6d MD	125
	126	static unsigned int nr_readers;
	127	static unsigned int nr_writers;
	128
	129	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	130
61c3fb60	131	static
fdee2e6d MD	132	void thr_reader(void _count)
	133	{
	134	unsigned long long *count = _count;
bcc74df3	135	int *local_ptr;
fdee2e6d	136
94df6318 MD	137	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	138	"reader", urcu_get_thread_id());
fdee2e6d MD	139
	140	set_affinity();
	141
	142	rcu_register_thread();
882f3357	143	assert(!rcu_read_ongoing());
fdee2e6d MD	144
	145	while (!test_go)
	146	{
	147	}
5481ddb3	148	cmm_smp_mb();
fdee2e6d MD	149
	150	for (;;) {
	151	rcu_read_lock();
882f3357	152	assert(rcu_read_ongoing());
fdee2e6d	153	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	154	rcu_debug_yield_read();
fdee2e6d	155	if (local_ptr)
bcc74df3	156	assert(*local_ptr == 8);
a0b7f7ea	157	if (caa_unlikely(rduration))
fdee2e6d MD	158	loop_sleep(rduration);
fdee2e6d MD	159	rcu_read_unlock();
bd252a04	160	URCU_TLS(nr_reads)++;
a0b7f7ea	161	if (caa_unlikely(!test_duration_read()))
fdee2e6d MD	162	break;
	163	}
	164
	165	rcu_unregister_thread();
	166
bd252a04	167	*count = URCU_TLS(nr_reads);
94df6318 MD	168	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	169	"reader", urcu_get_thread_id());
fdee2e6d MD	170	return ((void*)1);
	171
	172	}
	173
61c3fb60	174	static
fdee2e6d MD	175	void thr_writer(void _count)
	176	{
	177	unsigned long long *count = _count;
bcc74df3	178	int new, old;
fdee2e6d	179
94df6318 MD	180	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	181	"writer", urcu_get_thread_id());
fdee2e6d MD	182
	183	set_affinity();
	184
	185	while (!test_go)
	186	{
	187	}
5481ddb3	188	cmm_smp_mb();
fdee2e6d MD	189
fdee2e6d MD	190	for (;;) {
bcc74df3 MD	191	new = malloc(sizeof(int));
bcc74df3 MD	192	*new = 8;
d2835e6f	193	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	194	if (caa_unlikely(wduration))
31b598e0	195	loop_sleep(wduration);
d2835e6f	196	synchronize_rcu();
fdee2e6d	197	if (old)
bcc74df3 MD	198	*old = 0;
bcc74df3 MD	199	free(old);
bd252a04	200	URCU_TLS(nr_writes)++;
a0b7f7ea	201	if (caa_unlikely(!test_duration_write()))
fdee2e6d	202	break;
a0b7f7ea	203	if (caa_unlikely(wdelay))
fdee2e6d MD	204	loop_sleep(wdelay);
	205	}
	206
94df6318 MD	207	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	208	"writer", urcu_get_thread_id());
bd252a04	209	*count = URCU_TLS(nr_writes);
fdee2e6d MD	210	return ((void*)2);
	211	}
	212
61c3fb60	213	static
fdee2e6d MD	214	void show_usage(int argc, char **argv)
fdee2e6d MD	215	{
06637138 MD	216	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	217	argv[0]);
	218	printf("OPTIONS:\n");
06637138	219	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	220	printf(" [-d delay] (writer period (us))\n");
	221	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	222	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	223	printf(" [-v] (verbose output)\n");
	224	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
fdee2e6d MD	225	printf("\n");
	226	}
	227
	228	int main(int argc, char **argv)
	229	{
	230	int err;
	231	pthread_t tid_reader, tid_writer;
	232	void *tret;
	233	unsigned long long count_reader, count_writer;
	234	unsigned long long tot_reads = 0, tot_writes = 0;
	235	int i, a;
83e334d0	236	unsigned int i_thr;
fdee2e6d MD	237
	238	if (argc < 4) {
	239	show_usage(argc, argv);
	240	return -1;
	241	}
	242
	243	err = sscanf(argv[1], "%u", &nr_readers);
	244	if (err != 1) {
	245	show_usage(argc, argv);
	246	return -1;
	247	}
	248
	249	err = sscanf(argv[2], "%u", &nr_writers);
	250	if (err != 1) {
	251	show_usage(argc, argv);
	252	return -1;
	253	}
83e334d0	254
fdee2e6d MD	255	err = sscanf(argv[3], "%lu", &duration);
	256	if (err != 1) {
	257	show_usage(argc, argv);
	258	return -1;
	259	}
	260
	261	for (i = 4; i < argc; i++) {
	262	if (argv[i][0] != '-')
	263	continue;
	264	switch (argv[i][1]) {
fdee2e6d	265	case 'r':
2650042a	266	rcu_debug_yield_enable(RCU_YIELD_READ);
fdee2e6d MD	267	break;
fdee2e6d MD	268	case 'w':
2650042a	269	rcu_debug_yield_enable(RCU_YIELD_WRITE);
fdee2e6d	270	break;
fdee2e6d MD	271	case 'a':
	272	if (argc < i + 2) {
	273	show_usage(argc, argv);
	274	return -1;
	275	}
	276	a = atoi(argv[++i]);
	277	cpu_affinities[next_aff++] = a;
	278	use_affinity = 1;
	279	printf_verbose("Adding CPU %d affinity\n", a);
	280	break;
	281	case 'c':
	282	if (argc < i + 2) {
	283	show_usage(argc, argv);
	284	return -1;
	285	}
	286	rduration = atol(argv[++i]);
	287	break;
	288	case 'd':
	289	if (argc < i + 2) {
	290	show_usage(argc, argv);
	291	return -1;
	292	}
	293	wdelay = atol(argv[++i]);
	294	break;
31b598e0 MD	295	case 'e':
	296	if (argc < i + 2) {
	297	show_usage(argc, argv);
	298	return -1;
	299	}
	300	wduration = atol(argv[++i]);
	301	break;
fdee2e6d MD	302	case 'v':
	303	verbose_mode = 1;
	304	break;
	305	}
	306	}
	307
	308	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	309	duration, nr_readers, nr_writers);
	310	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	311	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	312	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	313	"main", urcu_get_thread_id());
fdee2e6d	314
9aa14175 MD	315	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	316	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	317	count_reader = calloc(nr_readers, sizeof(*count_reader));
	318	count_writer = calloc(nr_writers, sizeof(*count_writer));
fdee2e6d MD	319
	320	next_aff = 0;
	321
83e334d0 MJ	322	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	323	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	324	&count_reader[i_thr]);
fdee2e6d MD	325	if (err != 0)
	326	exit(1);
	327	}
83e334d0 MJ	328	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	329	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	330	&count_writer[i_thr]);
fdee2e6d MD	331	if (err != 0)
	332	exit(1);
	333	}
	334
5481ddb3	335	cmm_smp_mb();
fdee2e6d MD	336
	337	test_go = 1;
	338
	339	sleep(duration);
	340
	341	test_stop = 1;
	342
83e334d0 MJ	343	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	344	err = pthread_join(tid_reader[i_thr], &tret);
fdee2e6d MD	345	if (err != 0)
fdee2e6d MD	346	exit(1);
83e334d0	347	tot_reads += count_reader[i_thr];
fdee2e6d	348	}
83e334d0 MJ	349	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	350	err = pthread_join(tid_writer[i_thr], &tret);
fdee2e6d MD	351	if (err != 0)
fdee2e6d MD	352	exit(1);
83e334d0	353	tot_writes += count_writer[i_thr];
fdee2e6d	354	}
83e334d0	355
fdee2e6d MD	356	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
fdee2e6d MD	357	tot_writes);
a50a7b43	358	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
fdee2e6d MD	359	"nr_writers %3u "
fdee2e6d MD	360	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	361	argv[0], duration, nr_readers, rduration, wduration,
fdee2e6d MD	362	nr_writers, wdelay, tot_reads, tot_writes,
fdee2e6d MD	363	tot_reads + tot_writes);
83e334d0	364
bcc74df3	365	free(test_rcu_pointer);
fdee2e6d MD	366	free(tid_reader);
	367	free(tid_writer);
	368	free(count_reader);
	369	free(count_writer);
83e334d0	370
fdee2e6d MD	371	return 0;
fdee2e6d MD	372	}