[urcu.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.
 */

#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 <errno.h>

#include <urcu/arch.h>
#include <urcu/assert.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.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)
{
#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);
	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 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;

static
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)
			urcu_posix_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 __attribute__((unused)))
{
}

static void test_cb1(void *data __attribute__((unused)))
{
}

static
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);
}

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;
	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));
	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));

	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,
				     (void *)(long)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 += tot_nr_writes[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(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
90075a50 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>
94b343fd	31	#include <errno.h>
90075a50	32
ec4e58a3	33	#include <urcu/arch.h>
01477510	34	#include <urcu/assert.h>
bd252a04	35	#include <urcu/tls-compat.h>
94df6318	36	#include "thread-id.h"
2650042a	37	#include "../common/debug-yield.h"
65fcc7e9	38
90075a50 MD	39	/* hardcoded number of CPUs */
	40	#define NR_CPUS 16384
	41
90075a50 MD	42	#ifndef DYNAMIC_LINK_TEST
90075a50 MD	43	#define _LGPL_SOURCE
90075a50	44	#endif
ec4e58a3 MD	45	#include <urcu.h>
ec4e58a3 MD	46	#include <urcu-defer.h>
90075a50 MD	47
	48	struct test_array {
	49	int a;
	50	};
	51
	52	static volatile int test_go, test_stop;
	53
	54	static unsigned long wdelay;
	55
	56	static struct test_array *test_rcu_pointer;
	57
	58	static unsigned long duration;
	59
	60	/* read-side C.S. duration, in loops */
	61	static unsigned long rduration;
	62
31b598e0 MD	63	/* write-side C.S. duration, in loops */
	64	static unsigned long wduration;
	65
ab0aacbe	66	static inline void loop_sleep(unsigned long loops)
90075a50	67	{
ab0aacbe	68	while (loops-- != 0)
06f22bdb	69	caa_cpu_relax();
90075a50 MD	70	}
	71
	72	static int verbose_mode;
	73
	74	#define printf_verbose(fmt, args...) \
	75	do { \
	76	if (verbose_mode) \
	77	printf(fmt, args); \
	78	} while (0)
	79
	80	static unsigned int cpu_affinities[NR_CPUS];
	81	static unsigned int next_aff = 0;
	82	static int use_affinity = 0;
	83
	84	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	85
	86	static void set_affinity(void)
	87	{
2388c075	88	#ifdef HAVE_SCHED_SETAFFINITY
90075a50	89	cpu_set_t mask;
95bc7fb9 MD	90	int cpu, ret;
95bc7fb9 MD	91	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	92
	93	if (!use_affinity)
	94	return;
	95
2388c075	96	#ifdef HAVE_SCHED_SETAFFINITY
90075a50 MD	97	ret = pthread_mutex_lock(&affinity_mutex);
	98	if (ret) {
	99	perror("Error in pthread mutex lock");
	100	exit(-1);
	101	}
	102	cpu = cpu_affinities[next_aff++];
	103	ret = pthread_mutex_unlock(&affinity_mutex);
	104	if (ret) {
	105	perror("Error in pthread mutex unlock");
	106	exit(-1);
	107	}
d8540fc5	108
90075a50 MD	109	CPU_ZERO(&mask);
	110	CPU_SET(cpu, &mask);
	111	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5	112	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 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);
90075a50 MD	130
90075a50 MD	131	static
06f22bdb	132	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
90075a50 MD	133
	134	static unsigned int nr_readers;
	135	static unsigned int nr_writers;
	136
	137	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	138
61c3fb60	139	static
90075a50 MD	140	void thr_reader(void _count)
	141	{
	142	unsigned long long *count = _count;
	143	struct test_array *local_ptr;
	144
94df6318 MD	145	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	146	"reader", urcu_get_thread_id());
90075a50 MD	147
	148	set_affinity();
	149
	150	rcu_register_thread();
	151
	152	while (!test_go)
	153	{
	154	}
5481ddb3	155	cmm_smp_mb();
90075a50 MD	156
	157	for (;;) {
	158	rcu_read_lock();
	159	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	160	rcu_debug_yield_read();
90075a50	161	if (local_ptr)
01477510	162	urcu_posix_assert(local_ptr->a == 8);
a0b7f7ea	163	if (caa_unlikely(rduration))
90075a50 MD	164	loop_sleep(rduration);
90075a50 MD	165	rcu_read_unlock();
bd252a04	166	URCU_TLS(nr_reads)++;
a0b7f7ea	167	if (caa_unlikely(!test_duration_read()))
90075a50 MD	168	break;
	169	}
	170
	171	rcu_unregister_thread();
	172
bd252a04	173	*count = URCU_TLS(nr_reads);
94df6318 MD	174	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	175	"reader", urcu_get_thread_id());
90075a50 MD	176	return ((void*)1);
	177
	178	}
	179
70469b43	180	static void test_cb2(void *data __attribute__((unused)))
804b4375 MD	181	{
	182	}
	183
70469b43	184	static void test_cb1(void *data __attribute__((unused)))
804b4375 MD	185	{
	186	}
	187
61c3fb60	188	static
90075a50 MD	189	void thr_writer(void data)
	190	{
	191	unsigned long wtidx = (unsigned long)data;
	192	struct test_array new, old = NULL;
6ade67d5	193	int ret;
90075a50	194
94df6318 MD	195	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	196	"writer", urcu_get_thread_id());
90075a50 MD	197
	198	set_affinity();
	199
6ade67d5 MD	200	ret = rcu_defer_register_thread();
	201	if (ret) {
	202	printf("Error in rcu_defer_register_thread\n");
	203	exit(-1);
	204	}
90075a50 MD	205
	206	while (!test_go)
	207	{
	208	}
5481ddb3	209	cmm_smp_mb();
90075a50 MD	210
	211	for (;;) {
	212	new = malloc(sizeof(*new));
	213	new->a = 8;
	214	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	215	if (caa_unlikely(wduration))
31b598e0	216	loop_sleep(wduration);
b4f313b7 MD	217	defer_rcu(free, old);
	218	defer_rcu(test_cb1, old);
	219	defer_rcu(test_cb1, (void *)-2L);
	220	defer_rcu(test_cb1, (void *)-2L);
	221	defer_rcu(test_cb1, old);
	222	defer_rcu(test_cb2, (void *)-2L);
	223	defer_rcu(test_cb2, (void *)-4L);
	224	defer_rcu(test_cb2, (void *)-2L);
bd252a04	225	URCU_TLS(nr_writes)++;
a0b7f7ea	226	if (caa_unlikely(!test_duration_write()))
90075a50	227	break;
a0b7f7ea	228	if (caa_unlikely(wdelay))
90075a50 MD	229	loop_sleep(wdelay);
	230	}
	231
786ee85b	232	rcu_defer_unregister_thread();
90075a50	233
94df6318 MD	234	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	235	"writer", urcu_get_thread_id());
bd252a04	236	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
90075a50 MD	237	return ((void*)2);
	238	}
	239
61c3fb60	240	static
70469b43	241	void show_usage(char **argv)
90075a50	242	{
06637138 MD	243	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	244	argv[0]);
	245	printf("OPTIONS:\n");
06637138	246	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	247	printf(" [-d delay] (writer period (us))\n");
	248	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	249	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	250	printf(" [-v] (verbose output)\n");
	251	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
90075a50 MD	252	printf("\n");
	253	}
	254
	255	int main(int argc, char **argv)
	256	{
	257	int err;
	258	pthread_t tid_reader, tid_writer;
	259	void *tret;
	260	unsigned long long *count_reader;
	261	unsigned long long tot_reads = 0, tot_writes = 0;
	262	int i, a;
83e334d0	263	unsigned int i_thr;
90075a50 MD	264
90075a50 MD	265	if (argc < 4) {
70469b43	266	show_usage(argv);
90075a50 MD	267	return -1;
	268	}
	269
	270	err = sscanf(argv[1], "%u", &nr_readers);
	271	if (err != 1) {
70469b43	272	show_usage(argv);
90075a50 MD	273	return -1;
	274	}
	275
	276	err = sscanf(argv[2], "%u", &nr_writers);
	277	if (err != 1) {
70469b43	278	show_usage(argv);
90075a50 MD	279	return -1;
90075a50 MD	280	}
83e334d0	281
90075a50 MD	282	err = sscanf(argv[3], "%lu", &duration);
90075a50 MD	283	if (err != 1) {
70469b43	284	show_usage(argv);
90075a50 MD	285	return -1;
	286	}
	287
	288	for (i = 4; i < argc; i++) {
	289	if (argv[i][0] != '-')
	290	continue;
	291	switch (argv[i][1]) {
90075a50	292	case 'r':
2650042a	293	rcu_debug_yield_enable(RCU_YIELD_READ);
90075a50 MD	294	break;
90075a50 MD	295	case 'w':
2650042a	296	rcu_debug_yield_enable(RCU_YIELD_WRITE);
90075a50	297	break;
90075a50 MD	298	case 'a':
90075a50 MD	299	if (argc < i + 2) {
70469b43	300	show_usage(argv);
90075a50 MD	301	return -1;
	302	}
	303	a = atoi(argv[++i]);
	304	cpu_affinities[next_aff++] = a;
	305	use_affinity = 1;
	306	printf_verbose("Adding CPU %d affinity\n", a);
	307	break;
	308	case 'c':
	309	if (argc < i + 2) {
70469b43	310	show_usage(argv);
90075a50 MD	311	return -1;
	312	}
	313	rduration = atol(argv[++i]);
	314	break;
	315	case 'd':
	316	if (argc < i + 2) {
70469b43	317	show_usage(argv);
90075a50 MD	318	return -1;
	319	}
	320	wdelay = atol(argv[++i]);
	321	break;
31b598e0 MD	322	case 'e':
31b598e0 MD	323	if (argc < i + 2) {
70469b43	324	show_usage(argv);
31b598e0 MD	325	return -1;
	326	}
	327	wduration = atol(argv[++i]);
	328	break;
90075a50 MD	329	case 'v':
	330	verbose_mode = 1;
	331	break;
	332	}
	333	}
	334
	335	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	336	duration, nr_readers, nr_writers);
	337	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	338	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	339	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	340	"main", urcu_get_thread_id());
90075a50	341
9aa14175 MD	342	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	343	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	344	count_reader = calloc(nr_readers, sizeof(*count_reader));
	345	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
90075a50 MD	346
	347	next_aff = 0;
	348
83e334d0 MJ	349	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	350	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	351	&count_reader[i_thr]);
90075a50 MD	352	if (err != 0)
	353	exit(1);
	354	}
83e334d0 MJ	355	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	356	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	357	(void *)(long)i_thr);
90075a50 MD	358	if (err != 0)
	359	exit(1);
	360	}
	361
5481ddb3	362	cmm_smp_mb();
90075a50 MD	363
	364	test_go = 1;
	365
	366	sleep(duration);
	367
	368	test_stop = 1;
	369
83e334d0 MJ	370	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	371	err = pthread_join(tid_reader[i_thr], &tret);
90075a50 MD	372	if (err != 0)
90075a50 MD	373	exit(1);
83e334d0	374	tot_reads += count_reader[i_thr];
90075a50	375	}
83e334d0 MJ	376	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	377	err = pthread_join(tid_writer[i_thr], &tret);
90075a50 MD	378	if (err != 0)
90075a50 MD	379	exit(1);
83e334d0	380	tot_writes += tot_nr_writes[i_thr];
90075a50	381	}
83e334d0	382
90075a50 MD	383	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
90075a50 MD	384	tot_writes);
a50a7b43	385	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
90075a50 MD	386	"nr_writers %3u "
90075a50 MD	387	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	388	argv[0], duration, nr_readers, rduration, wduration,
90075a50 MD	389	nr_writers, wdelay, tot_reads, tot_writes,
	390	tot_reads + tot_writes);
	391	free(tid_reader);
	392	free(tid_writer);
	393	free(count_reader);
	394	free(tot_nr_writes);
	395
	396	return 0;
	397	}