[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 <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.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);
	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;

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");
	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(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));
	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>
	31	#include <assert.h>
94b343fd	32	#include <errno.h>
90075a50	33
ec4e58a3	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
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	{
95bc7fb9	88	#if 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
d8540fc5	96	#if 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
	139	void rcu_copy_mutex_lock(void)
	140	{
	141	int ret;
	142	ret = pthread_mutex_lock(&rcu_copy_mutex);
	143	if (ret) {
	144	perror("Error in pthread mutex lock");
	145	exit(-1);
	146	}
	147	}
	148
	149	void rcu_copy_mutex_unlock(void)
	150	{
	151	int ret;
	152
	153	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	154	if (ret) {
	155	perror("Error in pthread mutex unlock");
	156	exit(-1);
	157	}
	158	}
	159
	160	void thr_reader(void _count)
	161	{
	162	unsigned long long *count = _count;
	163	struct test_array *local_ptr;
	164
94df6318 MD	165	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	166	"reader", urcu_get_thread_id());
90075a50 MD	167
	168	set_affinity();
	169
	170	rcu_register_thread();
	171
	172	while (!test_go)
	173	{
	174	}
5481ddb3	175	cmm_smp_mb();
90075a50 MD	176
	177	for (;;) {
	178	rcu_read_lock();
	179	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	180	rcu_debug_yield_read();
90075a50 MD	181	if (local_ptr)
90075a50 MD	182	assert(local_ptr->a == 8);
a0b7f7ea	183	if (caa_unlikely(rduration))
90075a50 MD	184	loop_sleep(rduration);
90075a50 MD	185	rcu_read_unlock();
bd252a04	186	URCU_TLS(nr_reads)++;
a0b7f7ea	187	if (caa_unlikely(!test_duration_read()))
90075a50 MD	188	break;
	189	}
	190
	191	rcu_unregister_thread();
	192
bd252a04	193	*count = URCU_TLS(nr_reads);
94df6318 MD	194	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	195	"reader", urcu_get_thread_id());
90075a50 MD	196	return ((void*)1);
	197
	198	}
	199
804b4375 MD	200	static void test_cb2(void *data)
	201	{
	202	}
	203
	204	static void test_cb1(void *data)
	205	{
	206	}
	207
90075a50 MD	208	void thr_writer(void data)
	209	{
	210	unsigned long wtidx = (unsigned long)data;
	211	struct test_array new, old = NULL;
6ade67d5	212	int ret;
90075a50	213
94df6318 MD	214	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	215	"writer", urcu_get_thread_id());
90075a50 MD	216
	217	set_affinity();
	218
6ade67d5 MD	219	ret = rcu_defer_register_thread();
	220	if (ret) {
	221	printf("Error in rcu_defer_register_thread\n");
	222	exit(-1);
	223	}
90075a50 MD	224
	225	while (!test_go)
	226	{
	227	}
5481ddb3	228	cmm_smp_mb();
90075a50 MD	229
	230	for (;;) {
	231	new = malloc(sizeof(*new));
	232	new->a = 8;
	233	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	234	if (caa_unlikely(wduration))
31b598e0	235	loop_sleep(wduration);
b4f313b7 MD	236	defer_rcu(free, old);
	237	defer_rcu(test_cb1, old);
	238	defer_rcu(test_cb1, (void *)-2L);
	239	defer_rcu(test_cb1, (void *)-2L);
	240	defer_rcu(test_cb1, old);
	241	defer_rcu(test_cb2, (void *)-2L);
	242	defer_rcu(test_cb2, (void *)-4L);
	243	defer_rcu(test_cb2, (void *)-2L);
bd252a04	244	URCU_TLS(nr_writes)++;
a0b7f7ea	245	if (caa_unlikely(!test_duration_write()))
90075a50	246	break;
a0b7f7ea	247	if (caa_unlikely(wdelay))
90075a50 MD	248	loop_sleep(wdelay);
	249	}
	250
786ee85b	251	rcu_defer_unregister_thread();
90075a50	252
94df6318 MD	253	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	254	"writer", urcu_get_thread_id());
bd252a04	255	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
90075a50 MD	256	return ((void*)2);
	257	}
	258
	259	void show_usage(int argc, char **argv)
	260	{
06637138 MD	261	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	262	argv[0]);
	263	printf("OPTIONS:\n");
06637138	264	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	265	printf(" [-d delay] (writer period (us))\n");
	266	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	267	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	268	printf(" [-v] (verbose output)\n");
	269	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
90075a50 MD	270	printf("\n");
	271	}
	272
	273	int main(int argc, char **argv)
	274	{
	275	int err;
	276	pthread_t tid_reader, tid_writer;
	277	void *tret;
	278	unsigned long long *count_reader;
	279	unsigned long long tot_reads = 0, tot_writes = 0;
	280	int i, a;
83e334d0	281	unsigned int i_thr;
90075a50 MD	282
	283	if (argc < 4) {
	284	show_usage(argc, argv);
	285	return -1;
	286	}
	287
	288	err = sscanf(argv[1], "%u", &nr_readers);
	289	if (err != 1) {
	290	show_usage(argc, argv);
	291	return -1;
	292	}
	293
	294	err = sscanf(argv[2], "%u", &nr_writers);
	295	if (err != 1) {
	296	show_usage(argc, argv);
	297	return -1;
	298	}
83e334d0	299
90075a50 MD	300	err = sscanf(argv[3], "%lu", &duration);
	301	if (err != 1) {
	302	show_usage(argc, argv);
	303	return -1;
	304	}
	305
	306	for (i = 4; i < argc; i++) {
	307	if (argv[i][0] != '-')
	308	continue;
	309	switch (argv[i][1]) {
90075a50	310	case 'r':
2650042a	311	rcu_debug_yield_enable(RCU_YIELD_READ);
90075a50 MD	312	break;
90075a50 MD	313	case 'w':
2650042a	314	rcu_debug_yield_enable(RCU_YIELD_WRITE);
90075a50	315	break;
90075a50 MD	316	case 'a':
	317	if (argc < i + 2) {
	318	show_usage(argc, argv);
	319	return -1;
	320	}
	321	a = atoi(argv[++i]);
	322	cpu_affinities[next_aff++] = a;
	323	use_affinity = 1;
	324	printf_verbose("Adding CPU %d affinity\n", a);
	325	break;
	326	case 'c':
	327	if (argc < i + 2) {
	328	show_usage(argc, argv);
	329	return -1;
	330	}
	331	rduration = atol(argv[++i]);
	332	break;
	333	case 'd':
	334	if (argc < i + 2) {
	335	show_usage(argc, argv);
	336	return -1;
	337	}
	338	wdelay = atol(argv[++i]);
	339	break;
31b598e0 MD	340	case 'e':
	341	if (argc < i + 2) {
	342	show_usage(argc, argv);
	343	return -1;
	344	}
	345	wduration = atol(argv[++i]);
	346	break;
90075a50 MD	347	case 'v':
	348	verbose_mode = 1;
	349	break;
	350	}
	351	}
	352
	353	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	354	duration, nr_readers, nr_writers);
	355	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	356	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	357	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	358	"main", urcu_get_thread_id());
90075a50	359
9aa14175 MD	360	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	361	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	362	count_reader = calloc(nr_readers, sizeof(*count_reader));
	363	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
90075a50 MD	364
	365	next_aff = 0;
	366
83e334d0 MJ	367	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	368	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	369	&count_reader[i_thr]);
90075a50 MD	370	if (err != 0)
	371	exit(1);
	372	}
83e334d0 MJ	373	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	374	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	375	(void *)(long)i_thr);
90075a50 MD	376	if (err != 0)
	377	exit(1);
	378	}
	379
5481ddb3	380	cmm_smp_mb();
90075a50 MD	381
	382	test_go = 1;
	383
	384	sleep(duration);
	385
	386	test_stop = 1;
	387
83e334d0 MJ	388	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	389	err = pthread_join(tid_reader[i_thr], &tret);
90075a50 MD	390	if (err != 0)
90075a50 MD	391	exit(1);
83e334d0	392	tot_reads += count_reader[i_thr];
90075a50	393	}
83e334d0 MJ	394	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	395	err = pthread_join(tid_writer[i_thr], &tret);
90075a50 MD	396	if (err != 0)
90075a50 MD	397	exit(1);
83e334d0	398	tot_writes += tot_nr_writes[i_thr];
90075a50	399	}
83e334d0	400
90075a50 MD	401	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
90075a50 MD	402	tot_writes);
a50a7b43	403	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
90075a50 MD	404	"nr_writers %3u "
90075a50 MD	405	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	406	argv[0], duration, nr_readers, rduration, wduration,
90075a50 MD	407	nr_writers, wdelay, tot_reads, tot_writes,
	408	tot_reads + tot_writes);
	409	free(tid_reader);
	410	free(tid_writer);
	411	free(count_reader);
	412	free(tot_nr_writes);
	413
	414	return 0;
	415	}