[userspace-rcu.git] / tests / test_perthreadlock.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.
 */

#define _GNU_SOURCE
#include "../config.h"
#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 <sched.h>
#include <errno.h>

#include <urcu/arch.h>
#include <urcu/tls-compat.h>

#ifdef __linux__
#include <syscall.h>
#endif

/* hardcoded number of CPUs */
#define NR_CPUS 16384

#if defined(_syscall0)
_syscall0(pid_t, gettid)
#elif defined(__NR_gettid)
static inline pid_t gettid(void)
{
	return syscall(__NR_gettid);
}
#else
#warning "use pid as tid"
static inline pid_t gettid(void)
{
	return getpid();
}
#endif

#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#else
#define debug_yield_read()
#endif
#include <urcu.h>

struct test_array {
	int a;
};

struct per_thread_lock {
	pthread_mutex_t lock;
} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));	/* cache-line aligned */

static struct per_thread_lock *per_thread_lock;

static volatile int test_go, test_stop;

static unsigned long wdelay;

static volatile struct test_array test_array = { 8 };

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 l)
{
	while(l-- != 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;

#ifndef HAVE_CPU_SET_T
typedef unsigned long cpu_set_t;
# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
# define CPU_SET(cpu, cpuset) do { *(cpuset) |= (1UL << (cpu)); } while(0)
#endif

static void set_affinity(void)
{
	cpu_set_t mask;
	int cpu;
	int ret;

	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 long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
static
unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_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 *data)
{
	unsigned long tidx = (unsigned long)data;

	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
			"reader", pthread_self(), (unsigned long)gettid());

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		pthread_mutex_lock(&per_thread_lock[tidx].lock);
		assert(test_array.a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		pthread_mutex_unlock(&per_thread_lock[tidx].lock);
		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
			"reader", pthread_self(), (unsigned long)gettid());
	return ((void*)1);

}

void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
	long tidx;

	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
			"writer", pthread_self(), (unsigned long)gettid());

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		for (tidx = 0; tidx < nr_readers; tidx++) {
			pthread_mutex_lock(&per_thread_lock[tidx].lock);
		}
		test_array.a = 0;
		test_array.a = 8;
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
			pthread_mutex_unlock(&per_thread_lock[tidx].lock);
		}
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
			"writer", pthread_self(), (unsigned long)gettid());
	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)", argv[0]);
#ifdef DEBUG_YIELD
	printf(" [-r] [-w] (yield reader and/or writer)");
#endif
	printf(" [-d delay] (writer period (us))");
	printf(" [-c duration] (reader C.S. duration (in loops))");
	printf(" [-e duration] (writer C.S. duration (in loops))");
	printf(" [-v] (verbose output)");
	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	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;
	}
	cmm_smp_mb();

	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]) {
#ifdef DEBUG_YIELD
		case 'r':
			yield_active |= YIELD_READ;
			break;
		case 'w':
			yield_active |= YIELD_WRITE;
			break;
#endif
		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, thread id : %lx, tid %lu\n",
			"main", pthread_self(), (unsigned long)gettid());

	tid_reader = malloc(sizeof(*tid_reader) * nr_readers);
	tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
	count_reader = malloc(sizeof(*count_reader) * nr_readers);
	count_writer = malloc(sizeof(*count_writer) * nr_writers);
	tot_nr_reads = malloc(sizeof(*tot_nr_reads) * nr_readers);
	tot_nr_writes = malloc(sizeof(*tot_nr_writes) * nr_writers);
	per_thread_lock = malloc(sizeof(*per_thread_lock) * nr_readers);

	next_aff = 0;

	for (i = 0; i < nr_readers; i++) {
		err = pthread_create(&tid_reader[i], NULL, thr_reader,
				     (void *)(long)i);
		if (err != 0)
			exit(1);
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_create(&tid_writer[i], NULL, thr_writer,
				     (void *)(long)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 += tot_nr_reads[i];
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_join(tid_writer[i], &tret);
		if (err != 0)
			exit(1);
		tot_writes += tot_nr_writes[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(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	free(tot_nr_reads);
	free(tot_nr_writes);
	free(per_thread_lock);
	return 0;
}
Commit	Line	Data
	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
	23	#define _GNU_SOURCE
	24	#include "../config.h"
	25	#include <stdio.h>
	26	#include <pthread.h>
	27	#include <stdlib.h>
	28	#include <string.h>
	29	#include <sys/types.h>
	30	#include <sys/wait.h>
	31	#include <unistd.h>
	32	#include <stdio.h>
	33	#include <assert.h>
	34	#include <sched.h>
	35	#include <errno.h>
	36
	37	#include <urcu/arch.h>
	38	#include <urcu/tls-compat.h>
	39
	40	#ifdef __linux__
	41	#include <syscall.h>
	42	#endif
	43
	44	/* hardcoded number of CPUs */
	45	#define NR_CPUS 16384
	46
	47	#if defined(_syscall0)
	48	_syscall0(pid_t, gettid)
	49	#elif defined(__NR_gettid)
	50	static inline pid_t gettid(void)
	51	{
	52	return syscall(__NR_gettid);
	53	}
	54	#else
	55	#warning "use pid as tid"
	56	static inline pid_t gettid(void)
	57	{
	58	return getpid();
	59	}
	60	#endif
	61
	62	#ifndef DYNAMIC_LINK_TEST
	63	#define _LGPL_SOURCE
	64	#else
	65	#define debug_yield_read()
	66	#endif
	67	#include <urcu.h>
	68
	69	struct test_array {
	70	int a;
	71	};
	72
	73	struct per_thread_lock {
	74	pthread_mutex_t lock;
	75	} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
	76
	77	static struct per_thread_lock *per_thread_lock;
	78
	79	static volatile int test_go, test_stop;
	80
	81	static unsigned long wdelay;
	82
	83	static volatile struct test_array test_array = { 8 };
	84
	85	static unsigned long duration;
	86
	87	/* read-side C.S. duration, in loops */
	88	static unsigned long rduration;
	89
	90	/* write-side C.S. duration, in loops */
	91	static unsigned long wduration;
	92
	93	static inline void loop_sleep(unsigned long l)
	94	{
	95	while(l-- != 0)
	96	caa_cpu_relax();
	97	}
	98
	99	static int verbose_mode;
	100
	101	#define printf_verbose(fmt, args...) \
	102	do { \
	103	if (verbose_mode) \
	104	printf(fmt, args); \
	105	} while (0)
	106
	107	static unsigned int cpu_affinities[NR_CPUS];
	108	static unsigned int next_aff = 0;
	109	static int use_affinity = 0;
	110
	111	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	112
	113	#ifndef HAVE_CPU_SET_T
	114	typedef unsigned long cpu_set_t;
	115	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	116	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	117	#endif
	118
	119	static void set_affinity(void)
	120	{
	121	cpu_set_t mask;
	122	int cpu;
	123	int ret;
	124
	125	if (!use_affinity)
	126	return;
	127
	128	#if HAVE_SCHED_SETAFFINITY
	129	ret = pthread_mutex_lock(&affinity_mutex);
	130	if (ret) {
	131	perror("Error in pthread mutex lock");
	132	exit(-1);
	133	}
	134	cpu = cpu_affinities[next_aff++];
	135	ret = pthread_mutex_unlock(&affinity_mutex);
	136	if (ret) {
	137	perror("Error in pthread mutex unlock");
	138	exit(-1);
	139	}
	140	CPU_ZERO(&mask);
	141	CPU_SET(cpu, &mask);
	142	#if SCHED_SETAFFINITY_ARGS == 2
	143	sched_setaffinity(0, &mask);
	144	#else
	145	sched_setaffinity(0, sizeof(mask), &mask);
	146	#endif
	147	#endif /* HAVE_SCHED_SETAFFINITY */
	148	}
	149
	150	/*
	151	* returns 0 if test should end.
	152	*/
	153	static int test_duration_write(void)
	154	{
	155	return !test_stop;
	156	}
	157
	158	static int test_duration_read(void)
	159	{
	160	return !test_stop;
	161	}
	162
	163	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
	164	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
	165
	166	static
	167	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
	168	static
	169	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
	170
	171	static unsigned int nr_readers;
	172	static unsigned int nr_writers;
	173
	174	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	175
	176	void rcu_copy_mutex_lock(void)
	177	{
	178	int ret;
	179	ret = pthread_mutex_lock(&rcu_copy_mutex);
	180	if (ret) {
	181	perror("Error in pthread mutex lock");
	182	exit(-1);
	183	}
	184	}
	185
	186	void rcu_copy_mutex_unlock(void)
	187	{
	188	int ret;
	189
	190	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	191	if (ret) {
	192	perror("Error in pthread mutex unlock");
	193	exit(-1);
	194	}
	195	}
	196
	197	void thr_reader(void data)
	198	{
	199	unsigned long tidx = (unsigned long)data;
	200
	201	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
	202	"reader", pthread_self(), (unsigned long)gettid());
	203
	204	set_affinity();
	205
	206	while (!test_go)
	207	{
	208	}
	209
	210	for (;;) {
	211	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	212	assert(test_array.a == 8);
	213	if (caa_unlikely(rduration))
	214	loop_sleep(rduration);
	215	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
	216	URCU_TLS(nr_reads)++;
	217	if (caa_unlikely(!test_duration_read()))
	218	break;
	219	}
	220
	221	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
	222	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
	223	"reader", pthread_self(), (unsigned long)gettid());
	224	return ((void*)1);
	225
	226	}
	227
	228	void thr_writer(void data)
	229	{
	230	unsigned long wtidx = (unsigned long)data;
	231	long tidx;
	232
	233	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
	234	"writer", pthread_self(), (unsigned long)gettid());
	235
	236	set_affinity();
	237
	238	while (!test_go)
	239	{
	240	}
	241	cmm_smp_mb();
	242
	243	for (;;) {
	244	for (tidx = 0; tidx < nr_readers; tidx++) {
	245	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	246	}
	247	test_array.a = 0;
	248	test_array.a = 8;
	249	if (caa_unlikely(wduration))
	250	loop_sleep(wduration);
	251	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
	252	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
	253	}
	254	URCU_TLS(nr_writes)++;
	255	if (caa_unlikely(!test_duration_write()))
	256	break;
	257	if (caa_unlikely(wdelay))
	258	loop_sleep(wdelay);
	259	}
	260
	261	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
	262	"writer", pthread_self(), (unsigned long)gettid());
	263	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
	264	return ((void*)2);
	265	}
	266
	267	void show_usage(int argc, char **argv)
	268	{
	269	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	270	#ifdef DEBUG_YIELD
	271	printf(" [-r] [-w] (yield reader and/or writer)");
	272	#endif
	273	printf(" [-d delay] (writer period (us))");
	274	printf(" [-c duration] (reader C.S. duration (in loops))");
	275	printf(" [-e duration] (writer C.S. duration (in loops))");
	276	printf(" [-v] (verbose output)");
	277	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	278	printf("\n");
	279	}
	280
	281	int main(int argc, char **argv)
	282	{
	283	int err;
	284	pthread_t tid_reader, tid_writer;
	285	void *tret;
	286	unsigned long long count_reader, count_writer;
	287	unsigned long long tot_reads = 0, tot_writes = 0;
	288	int i, a;
	289
	290	if (argc < 4) {
	291	show_usage(argc, argv);
	292	return -1;
	293	}
	294	cmm_smp_mb();
	295
	296	err = sscanf(argv[1], "%u", &nr_readers);
	297	if (err != 1) {
	298	show_usage(argc, argv);
	299	return -1;
	300	}
	301
	302	err = sscanf(argv[2], "%u", &nr_writers);
	303	if (err != 1) {
	304	show_usage(argc, argv);
	305	return -1;
	306	}
	307
	308	err = sscanf(argv[3], "%lu", &duration);
	309	if (err != 1) {
	310	show_usage(argc, argv);
	311	return -1;
	312	}
	313
	314	for (i = 4; i < argc; i++) {
	315	if (argv[i][0] != '-')
	316	continue;
	317	switch (argv[i][1]) {
	318	#ifdef DEBUG_YIELD
	319	case 'r':
	320	yield_active \|= YIELD_READ;
	321	break;
	322	case 'w':
	323	yield_active \|= YIELD_WRITE;
	324	break;
	325	#endif
	326	case 'a':
	327	if (argc < i + 2) {
	328	show_usage(argc, argv);
	329	return -1;
	330	}
	331	a = atoi(argv[++i]);
	332	cpu_affinities[next_aff++] = a;
	333	use_affinity = 1;
	334	printf_verbose("Adding CPU %d affinity\n", a);
	335	break;
	336	case 'c':
	337	if (argc < i + 2) {
	338	show_usage(argc, argv);
	339	return -1;
	340	}
	341	rduration = atol(argv[++i]);
	342	break;
	343	case 'd':
	344	if (argc < i + 2) {
	345	show_usage(argc, argv);
	346	return -1;
	347	}
	348	wdelay = atol(argv[++i]);
	349	break;
	350	case 'e':
	351	if (argc < i + 2) {
	352	show_usage(argc, argv);
	353	return -1;
	354	}
	355	wduration = atol(argv[++i]);
	356	break;
	357	case 'v':
	358	verbose_mode = 1;
	359	break;
	360	}
	361	}
	362
	363	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	364	duration, nr_readers, nr_writers);
	365	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	366	printf_verbose("Reader duration : %lu loops.\n", rduration);
	367	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
	368	"main", pthread_self(), (unsigned long)gettid());
	369
	370	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	371	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	372	count_reader = malloc(sizeof(count_reader) nr_readers);
	373	count_writer = malloc(sizeof(count_writer) nr_writers);
	374	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	375	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	376	per_thread_lock = malloc(sizeof(per_thread_lock) nr_readers);
	377
	378	next_aff = 0;
	379
	380	for (i = 0; i < nr_readers; i++) {
	381	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	382	(void *)(long)i);
	383	if (err != 0)
	384	exit(1);
	385	}
	386	for (i = 0; i < nr_writers; i++) {
	387	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	388	(void *)(long)i);
	389	if (err != 0)
	390	exit(1);
	391	}
	392
	393	cmm_smp_mb();
	394
	395	test_go = 1;
	396
	397	sleep(duration);
	398
	399	test_stop = 1;
	400
	401	for (i = 0; i < nr_readers; i++) {
	402	err = pthread_join(tid_reader[i], &tret);
	403	if (err != 0)
	404	exit(1);
	405	tot_reads += tot_nr_reads[i];
	406	}
	407	for (i = 0; i < nr_writers; i++) {
	408	err = pthread_join(tid_writer[i], &tret);
	409	if (err != 0)
	410	exit(1);
	411	tot_writes += tot_nr_writes[i];
	412	}
	413
	414	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	415	tot_writes);
	416	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
	417	"nr_writers %3u "
	418	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
	419	argv[0], duration, nr_readers, rduration, wduration,
	420	nr_writers, wdelay, tot_reads, tot_writes,
	421	tot_reads + tot_writes);
	422
	423	free(tid_reader);
	424	free(tid_writer);
	425	free(count_reader);
	426	free(count_writer);
	427	free(tot_nr_reads);
	428	free(tot_nr_writes);
	429	free(per_thread_lock);
	430	return 0;
	431	}