[urcu.git] / tests / benchmark / test_urcu_qsbr.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-qsbr.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)
{
#ifdef HAVE_SCHED_SETAFFINITY
	cpu_set_t mask;
	int cpu, ret;
#endif /* HAVE_SCHED_SETAFFINITY */

	if (!use_affinity)
		return;

#ifdef 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;

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());
	rcu_thread_offline();
	assert(!rcu_read_ongoing());
	rcu_thread_online();

	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)++;
		/* QS each 1024 reads */
		if (caa_unlikely((URCU_TLS(nr_reads) & ((1 << 10) - 1)) == 0))
			rcu_quiescent_state();
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	rcu_unregister_thread();

	/* test extra thread registration */
	rcu_register_thread();
	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));
		assert(new);
		*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(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(argv);
		return -1;
	}

	err = sscanf(argv[1], "%u", &nr_readers);
	if (err != 1) {
		show_usage(argv);
		return -1;
	}

	err = sscanf(argv[2], "%u", &nr_writers);
	if (err != 1) {
		show_usage(argv);
		return -1;
	}

	err = sscanf(argv[3], "%lu", &duration);
	if (err != 1) {
		show_usage(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(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(argv);
				return -1;
			}
			rduration = atol(argv[++i]);
			break;
		case 'd':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			wdelay = atol(argv[++i]);
			break;
		case 'e':
			if (argc < i + 2) {
				show_usage(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
de10a585 MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	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
de10a585 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>
de10a585 MD	32	#include <errno.h>
	33
	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"
de10a585 MD	39
	40	/* hardcoded number of CPUs */
	41	#define NR_CPUS 16384
	42
de10a585 MD	43	#ifndef DYNAMIC_LINK_TEST
de10a585 MD	44	#define _LGPL_SOURCE
de10a585 MD	45	#endif
	46	#include "urcu-qsbr.h"
	47
de10a585 MD	48	static volatile int test_go, test_stop;
	49
	50	static unsigned long wdelay;
	51
bcc74df3	52	static int *test_rcu_pointer;
de10a585 MD	53
	54	static unsigned long duration;
	55
	56	/* read-side C.S. duration, in loops */
	57	static unsigned long rduration;
	58
	59	/* write-side C.S. duration, in loops */
	60	static unsigned long wduration;
	61
ab0aacbe	62	static inline void loop_sleep(unsigned long loops)
de10a585	63	{
ab0aacbe	64	while (loops-- != 0)
de10a585 MD	65	caa_cpu_relax();
	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
de10a585 MD	82	static void set_affinity(void)
de10a585 MD	83	{
1a93fffc	84	#ifdef HAVE_SCHED_SETAFFINITY
de10a585	85	cpu_set_t mask;
95bc7fb9 MD	86	int cpu, ret;
95bc7fb9 MD	87	#endif /* HAVE_SCHED_SETAFFINITY */
de10a585 MD	88
	89	if (!use_affinity)
	90	return;
	91
1a93fffc	92	#ifdef HAVE_SCHED_SETAFFINITY
de10a585 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	}
	104	CPU_ZERO(&mask);
	105	CPU_SET(cpu, &mask);
	106	#if SCHED_SETAFFINITY_ARGS == 2
	107	sched_setaffinity(0, &mask);
	108	#else
	109	sched_setaffinity(0, sizeof(mask), &mask);
	110	#endif
	111	#endif /* HAVE_SCHED_SETAFFINITY */
	112	}
	113
	114	/*
	115	* returns 0 if test should end.
	116	*/
	117	static int test_duration_write(void)
	118	{
	119	return !test_stop;
	120	}
	121
	122	static int test_duration_read(void)
	123	{
	124	return !test_stop;
	125	}
	126
bd252a04 MD	127	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	128	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
de10a585 MD	129
	130	static unsigned int nr_readers;
	131	static unsigned int nr_writers;
	132
	133	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	134
3b4d3084	135	static
de10a585 MD	136	void thr_reader(void _count)
	137	{
	138	unsigned long long *count = _count;
bcc74df3	139	int *local_ptr;
de10a585	140
94df6318 MD	141	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	142	"reader", urcu_get_thread_id());
de10a585 MD	143
	144	set_affinity();
	145
	146	rcu_register_thread();
	147
882f3357 MD	148	assert(rcu_read_ongoing());
	149	rcu_thread_offline();
	150	assert(!rcu_read_ongoing());
	151	rcu_thread_online();
	152
de10a585 MD	153	while (!test_go)
	154	{
	155	}
	156	cmm_smp_mb();
	157
	158	for (;;) {
	159	rcu_read_lock();
882f3357	160	assert(rcu_read_ongoing());
de10a585	161	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	162	rcu_debug_yield_read();
de10a585	163	if (local_ptr)
bcc74df3	164	assert(*local_ptr == 8);
a0b7f7ea	165	if (caa_unlikely(rduration))
de10a585 MD	166	loop_sleep(rduration);
de10a585 MD	167	rcu_read_unlock();
bd252a04	168	URCU_TLS(nr_reads)++;
de10a585	169	/* QS each 1024 reads */
bd252a04	170	if (caa_unlikely((URCU_TLS(nr_reads) & ((1 << 10) - 1)) == 0))
de10a585	171	rcu_quiescent_state();
a0b7f7ea	172	if (caa_unlikely(!test_duration_read()))
de10a585 MD	173	break;
	174	}
	175
	176	rcu_unregister_thread();
	177
	178	/* test extra thread registration */
	179	rcu_register_thread();
	180	rcu_unregister_thread();
	181
bd252a04	182	*count = URCU_TLS(nr_reads);
94df6318 MD	183	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	184	"reader", urcu_get_thread_id());
de10a585 MD	185	return ((void*)1);
	186
	187	}
	188
3b4d3084	189	static
de10a585 MD	190	void thr_writer(void _count)
	191	{
	192	unsigned long long *count = _count;
bcc74df3	193	int new, old;
de10a585	194
94df6318 MD	195	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	196	"writer", urcu_get_thread_id());
de10a585 MD	197
	198	set_affinity();
	199
	200	while (!test_go)
	201	{
	202	}
	203	cmm_smp_mb();
	204
	205	for (;;) {
bcc74df3 MD	206	new = malloc(sizeof(int));
	207	assert(new);
	208	*new = 8;
de10a585	209	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	210	if (caa_unlikely(wduration))
de10a585 MD	211	loop_sleep(wduration);
de10a585 MD	212	synchronize_rcu();
de10a585	213	if (old)
bcc74df3 MD	214	*old = 0;
bcc74df3 MD	215	free(old);
bd252a04	216	URCU_TLS(nr_writes)++;
a0b7f7ea	217	if (caa_unlikely(!test_duration_write()))
de10a585	218	break;
a0b7f7ea	219	if (caa_unlikely(wdelay))
de10a585 MD	220	loop_sleep(wdelay);
	221	}
	222
94df6318 MD	223	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	224	"writer", urcu_get_thread_id());
bd252a04	225	*count = URCU_TLS(nr_writes);
de10a585 MD	226	return ((void*)2);
	227	}
	228
3b4d3084	229	static
5eedd745	230	void show_usage(char **argv)
de10a585	231	{
06637138 MD	232	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	233	argv[0]);
	234	printf("OPTIONS:\n");
06637138	235	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	236	printf(" [-d delay] (writer period (us))\n");
	237	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	238	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	239	printf(" [-v] (verbose output)\n");
	240	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
de10a585 MD	241	printf("\n");
	242	}
	243
	244	int main(int argc, char **argv)
	245	{
	246	int err;
	247	pthread_t tid_reader, tid_writer;
	248	void *tret;
	249	unsigned long long count_reader, count_writer;
	250	unsigned long long tot_reads = 0, tot_writes = 0;
	251	int i, a;
83e334d0	252	unsigned int i_thr;
de10a585 MD	253
de10a585 MD	254	if (argc < 4) {
5eedd745	255	show_usage(argv);
de10a585 MD	256	return -1;
	257	}
	258
	259	err = sscanf(argv[1], "%u", &nr_readers);
	260	if (err != 1) {
5eedd745	261	show_usage(argv);
de10a585 MD	262	return -1;
	263	}
	264
	265	err = sscanf(argv[2], "%u", &nr_writers);
	266	if (err != 1) {
5eedd745	267	show_usage(argv);
de10a585 MD	268	return -1;
de10a585 MD	269	}
83e334d0	270
de10a585 MD	271	err = sscanf(argv[3], "%lu", &duration);
de10a585 MD	272	if (err != 1) {
5eedd745	273	show_usage(argv);
de10a585 MD	274	return -1;
	275	}
	276
	277	for (i = 4; i < argc; i++) {
	278	if (argv[i][0] != '-')
	279	continue;
	280	switch (argv[i][1]) {
de10a585	281	case 'r':
2650042a	282	rcu_debug_yield_enable(RCU_YIELD_READ);
de10a585 MD	283	break;
de10a585 MD	284	case 'w':
2650042a	285	rcu_debug_yield_enable(RCU_YIELD_WRITE);
de10a585	286	break;
de10a585 MD	287	case 'a':
de10a585 MD	288	if (argc < i + 2) {
5eedd745	289	show_usage(argv);
de10a585 MD	290	return -1;
	291	}
	292	a = atoi(argv[++i]);
	293	cpu_affinities[next_aff++] = a;
	294	use_affinity = 1;
	295	printf_verbose("Adding CPU %d affinity\n", a);
	296	break;
	297	case 'c':
	298	if (argc < i + 2) {
5eedd745	299	show_usage(argv);
de10a585 MD	300	return -1;
	301	}
	302	rduration = atol(argv[++i]);
	303	break;
	304	case 'd':
	305	if (argc < i + 2) {
5eedd745	306	show_usage(argv);
de10a585 MD	307	return -1;
	308	}
	309	wdelay = atol(argv[++i]);
	310	break;
	311	case 'e':
	312	if (argc < i + 2) {
5eedd745	313	show_usage(argv);
de10a585 MD	314	return -1;
	315	}
	316	wduration = atol(argv[++i]);
	317	break;
	318	case 'v':
	319	verbose_mode = 1;
	320	break;
	321	}
	322	}
	323
	324	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	325	duration, nr_readers, nr_writers);
	326	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	327	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	328	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	329	"main", urcu_get_thread_id());
de10a585	330
9aa14175 MD	331	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	332	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	333	count_reader = calloc(nr_readers, sizeof(*count_reader));
	334	count_writer = calloc(nr_writers, sizeof(*count_writer));
de10a585 MD	335
	336	next_aff = 0;
	337
83e334d0 MJ	338	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	339	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	340	&count_reader[i_thr]);
de10a585 MD	341	if (err != 0)
	342	exit(1);
	343	}
83e334d0 MJ	344	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	345	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	346	&count_writer[i_thr]);
de10a585 MD	347	if (err != 0)
	348	exit(1);
	349	}
	350
	351	cmm_smp_mb();
	352
	353	test_go = 1;
	354
	355	sleep(duration);
	356
	357	test_stop = 1;
	358
83e334d0 MJ	359	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	360	err = pthread_join(tid_reader[i_thr], &tret);
de10a585 MD	361	if (err != 0)
de10a585 MD	362	exit(1);
83e334d0	363	tot_reads += count_reader[i_thr];
de10a585	364	}
83e334d0 MJ	365	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	366	err = pthread_join(tid_writer[i_thr], &tret);
de10a585 MD	367	if (err != 0)
de10a585 MD	368	exit(1);
83e334d0	369	tot_writes += count_writer[i_thr];
de10a585	370	}
83e334d0	371
de10a585 MD	372	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	373	tot_writes);
	374	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
	375	"nr_writers %3u "
	376	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
	377	argv[0], duration, nr_readers, rduration, wduration,
	378	nr_writers, wdelay, tot_reads, tot_writes,
	379	tot_reads + tot_writes);
bcc74df3	380	free(test_rcu_pointer);
de10a585 MD	381	free(tid_reader);
	382	free(tid_writer);
	383	free(count_reader);
	384	free(count_writer);
	385	return 0;
	386	}