[urcu.git] / tests / test_mutex.c

/*
 * test_urcu.c
 *
 * Userspace RCU library - test program
 *
 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
 *
 * 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 <sys/syscall.h>
#include <sched.h>
#include <errno.h>

#include <urcu/arch.h>

/* 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;
};

static pthread_mutex_t 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;

static inline void loop_sleep(unsigned long l)
{
	while(l-- != 0)
		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 unsigned long long __thread nr_writes;
static unsigned long long __thread nr_reads;

static
unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes;
static
unsigned long long __attribute__((aligned(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(&lock);
		assert(test_array.a == 8);
		if (unlikely(rduration))
			loop_sleep(rduration);
		pthread_mutex_unlock(&lock);
		nr_reads++;
		if (unlikely(!test_duration_read()))
			break;
	}

	tot_nr_reads[tidx] = 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;

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

	set_affinity();

	while (!test_go)
	{
	}
	smp_mb();

	for (;;) {
		pthread_mutex_lock(&lock);
		test_array.a = 0;
		test_array.a = 8;
		pthread_mutex_unlock(&lock);
		nr_writes++;
		if (unlikely(!test_duration_write()))
			break;
		if (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] = 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(" [-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;
	}
	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 '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);

	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);
	}

	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 "
		"nr_writers %3u "
		"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
		argv[0], duration, nr_readers, rduration,
		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);
	return 0;
}
Commit	Line	Data
51299083 MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
	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
d8540fc5	24	#include "../config.h"
51299083 MD	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 <sys/syscall.h>
	35	#include <sched.h>
94b343fd	36	#include <errno.h>
51299083	37
ec4e58a3	38	#include <urcu/arch.h>
51299083	39
2a7ac59d MD	40	/* hardcoded number of CPUs */
	41	#define NR_CPUS 16384
	42
51299083 MD	43	#if defined(_syscall0)
	44	_syscall0(pid_t, gettid)
	45	#elif defined(__NR_gettid)
	46	static inline pid_t gettid(void)
	47	{
	48	return syscall(__NR_gettid);
	49	}
	50	#else
	51	#warning "use pid as tid"
	52	static inline pid_t gettid(void)
	53	{
	54	return getpid();
	55	}
	56	#endif
	57
	58	#ifndef DYNAMIC_LINK_TEST
	59	#define _LGPL_SOURCE
	60	#else
	61	#define debug_yield_read()
	62	#endif
ec4e58a3	63	#include <urcu.h>
51299083 MD	64
	65	struct test_array {
	66	int a;
	67	};
	68
	69	static pthread_mutex_t lock;
	70
	71	static volatile int test_go, test_stop;
	72
9e31d0f0	73	static unsigned long wdelay;
51299083 MD	74
	75	static volatile struct test_array test_array = { 8 };
	76
	77	static unsigned long duration;
	78
daddf5b0	79	/* read-side C.S. duration, in loops */
8b632bab MD	80	static unsigned long rduration;
8b632bab MD	81
daddf5b0 MD	82	static inline void loop_sleep(unsigned long l)
	83	{
	84	while(l-- != 0)
	85	cpu_relax();
	86	}
	87
4bad7d45 MD	88	static int verbose_mode;
	89
	90	#define printf_verbose(fmt, args...) \
	91	do { \
	92	if (verbose_mode) \
	93	printf(fmt, args); \
	94	} while (0)
	95
2a7ac59d MD	96	static unsigned int cpu_affinities[NR_CPUS];
	97	static unsigned int next_aff = 0;
	98	static int use_affinity = 0;
	99
6af882ba MD	100	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	101
d8540fc5 PA	102	#ifndef HAVE_CPU_SET_T
	103	typedef unsigned long cpu_set_t;
	104	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	105	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	106	#endif
	107
2a7ac59d MD	108	static void set_affinity(void)
	109	{
	110	cpu_set_t mask;
	111	int cpu;
6af882ba	112	int ret;
2a7ac59d MD	113
	114	if (!use_affinity)
	115	return;
	116
d8540fc5	117	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	118	ret = pthread_mutex_lock(&affinity_mutex);
	119	if (ret) {
	120	perror("Error in pthread mutex lock");
	121	exit(-1);
	122	}
2a7ac59d	123	cpu = cpu_affinities[next_aff++];
6af882ba MD	124	ret = pthread_mutex_unlock(&affinity_mutex);
	125	if (ret) {
	126	perror("Error in pthread mutex unlock");
	127	exit(-1);
	128	}
2a7ac59d MD	129	CPU_ZERO(&mask);
2a7ac59d MD	130	CPU_SET(cpu, &mask);
d8540fc5 PA	131	#if SCHED_SETAFFINITY_ARGS == 2
	132	sched_setaffinity(0, &mask);
	133	#else
2a7ac59d	134	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	135	#endif
d8540fc5 PA	136	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	137	}
2a7ac59d MD	138
51299083 MD	139	/*
	140	* returns 0 if test should end.
	141	*/
	142	static int test_duration_write(void)
	143	{
	144	return !test_stop;
	145	}
	146
	147	static int test_duration_read(void)
	148	{
	149	return !test_stop;
	150	}
	151
	152	static unsigned long long __thread nr_writes;
	153	static unsigned long long __thread nr_reads;
	154
55271c13 MD	155	static
	156	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes;
	157	static
	158	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_reads;
51299083 MD	159
	160	static unsigned int nr_readers;
	161	static unsigned int nr_writers;
	162
	163	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	164
	165	void rcu_copy_mutex_lock(void)
	166	{
	167	int ret;
	168	ret = pthread_mutex_lock(&rcu_copy_mutex);
	169	if (ret) {
	170	perror("Error in pthread mutex lock");
	171	exit(-1);
	172	}
	173	}
	174
	175	void rcu_copy_mutex_unlock(void)
	176	{
	177	int ret;
	178
	179	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	180	if (ret) {
	181	perror("Error in pthread mutex unlock");
	182	exit(-1);
	183	}
	184	}
	185
	186	void thr_reader(void data)
	187	{
	188	unsigned long tidx = (unsigned long)data;
	189
4bad7d45	190	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
51299083 MD	191	"reader", pthread_self(), (unsigned long)gettid());
51299083 MD	192
2a7ac59d MD	193	set_affinity();
2a7ac59d MD	194
51299083 MD	195	while (!test_go)
	196	{
	197	}
	198
	199	for (;;) {
	200	pthread_mutex_lock(&lock);
	201	assert(test_array.a == 8);
8b632bab	202	if (unlikely(rduration))
daddf5b0	203	loop_sleep(rduration);
51299083 MD	204	pthread_mutex_unlock(&lock);
	205	nr_reads++;
	206	if (unlikely(!test_duration_read()))
	207	break;
	208	}
	209
	210	tot_nr_reads[tidx] = nr_reads;
cda3c71d	211	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
51299083 MD	212	"reader", pthread_self(), (unsigned long)gettid());
	213	return ((void*)1);
	214
	215	}
	216
	217	void thr_writer(void data)
	218	{
	219	unsigned long wtidx = (unsigned long)data;
	220
4bad7d45	221	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
51299083 MD	222	"writer", pthread_self(), (unsigned long)gettid());
51299083 MD	223
2a7ac59d MD	224	set_affinity();
2a7ac59d MD	225
51299083 MD	226	while (!test_go)
	227	{
	228	}
	229	smp_mb();
	230
	231	for (;;) {
	232	pthread_mutex_lock(&lock);
	233	test_array.a = 0;
	234	test_array.a = 8;
	235	pthread_mutex_unlock(&lock);
	236	nr_writes++;
	237	if (unlikely(!test_duration_write()))
	238	break;
	239	if (unlikely(wdelay))
9e31d0f0	240	loop_sleep(wdelay);
51299083 MD	241	}
51299083 MD	242
4bad7d45	243	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
51299083 MD	244	"writer", pthread_self(), (unsigned long)gettid());
	245	tot_nr_writes[wtidx] = nr_writes;
	246	return ((void*)2);
	247	}
	248
	249	void show_usage(int argc, char **argv)
	250	{
	251	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	252	#ifdef DEBUG_YIELD
	253	printf(" [-r] [-w] (yield reader and/or writer)");
	254	#endif
	255	printf(" [-d delay] (writer period (us))");
daddf5b0	256	printf(" [-c duration] (reader C.S. duration (in loops))");
4bad7d45	257	printf(" [-v] (verbose output)");
51299083 MD	258	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	259	printf("\n");
	260	}
	261
51299083 MD	262	int main(int argc, char **argv)
	263	{
	264	int err;
	265	pthread_t tid_reader, tid_writer;
	266	void *tret;
	267	unsigned long long count_reader, count_writer;
	268	unsigned long long tot_reads = 0, tot_writes = 0;
	269	int i, a;
51299083 MD	270
	271	if (argc < 4) {
	272	show_usage(argc, argv);
	273	return -1;
	274	}
	275	smp_mb();
	276
	277	err = sscanf(argv[1], "%u", &nr_readers);
	278	if (err != 1) {
	279	show_usage(argc, argv);
	280	return -1;
	281	}
	282
	283	err = sscanf(argv[2], "%u", &nr_writers);
	284	if (err != 1) {
	285	show_usage(argc, argv);
	286	return -1;
	287	}
	288
	289	err = sscanf(argv[3], "%lu", &duration);
	290	if (err != 1) {
	291	show_usage(argc, argv);
	292	return -1;
	293	}
	294
51299083 MD	295	for (i = 4; i < argc; i++) {
	296	if (argv[i][0] != '-')
	297	continue;
	298	switch (argv[i][1]) {
	299	#ifdef DEBUG_YIELD
	300	case 'r':
	301	yield_active \|= YIELD_READ;
	302	break;
	303	case 'w':
	304	yield_active \|= YIELD_WRITE;
	305	break;
	306	#endif
	307	case 'a':
	308	if (argc < i + 2) {
	309	show_usage(argc, argv);
	310	return -1;
	311	}
	312	a = atoi(argv[++i]);
2a7ac59d	313	cpu_affinities[next_aff++] = a;
51299083	314	use_affinity = 1;
4bad7d45	315	printf_verbose("Adding CPU %d affinity\n", a);
51299083	316	break;
8b632bab MD	317	case 'c':
	318	if (argc < i + 2) {
	319	show_usage(argc, argv);
	320	return -1;
	321	}
9e31d0f0	322	rduration = atol(argv[++i]);
8b632bab	323	break;
51299083 MD	324	case 'd':
	325	if (argc < i + 2) {
	326	show_usage(argc, argv);
	327	return -1;
	328	}
9e31d0f0	329	wdelay = atol(argv[++i]);
51299083	330	break;
4bad7d45 MD	331	case 'v':
	332	verbose_mode = 1;
	333	break;
51299083 MD	334	}
	335	}
	336
4bad7d45	337	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
51299083	338	duration, nr_readers, nr_writers);
9e31d0f0	339	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	340	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	341	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
51299083 MD	342	"main", pthread_self(), (unsigned long)gettid());
51299083 MD	343
51299083 MD	344	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	345	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	346	count_reader = malloc(sizeof(count_reader) nr_readers);
	347	count_writer = malloc(sizeof(count_writer) nr_writers);
	348	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	349	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	350
2a7ac59d MD	351	next_aff = 0;
2a7ac59d MD	352
51299083 MD	353	for (i = 0; i < nr_readers; i++) {
	354	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	355	(void *)(long)i);
	356	if (err != 0)
	357	exit(1);
	358	}
	359	for (i = 0; i < nr_writers; i++) {
	360	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	361	(void *)(long)i);
	362	if (err != 0)
	363	exit(1);
	364	}
	365
	366	smp_mb();
	367
	368	test_go = 1;
	369
	370	sleep(duration);
	371
	372	test_stop = 1;
	373
	374	for (i = 0; i < nr_readers; i++) {
	375	err = pthread_join(tid_reader[i], &tret);
	376	if (err != 0)
	377	exit(1);
	378	tot_reads += tot_nr_reads[i];
	379	}
	380	for (i = 0; i < nr_writers; i++) {
	381	err = pthread_join(tid_writer[i], &tret);
	382	if (err != 0)
	383	exit(1);
	384	tot_writes += tot_nr_writes[i];
	385	}
4bad7d45 MD	386
4bad7d45 MD	387	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
51299083	388	tot_writes);
6a190115	389	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu "
cda3c71d	390	"nr_writers %3u "
9e31d0f0	391	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
4bad7d45 MD	392	argv[0], duration, nr_readers, rduration,
	393	nr_writers, wdelay, tot_reads, tot_writes,
	394	tot_reads + tot_writes);
	395
51299083 MD	396	free(tid_reader);
	397	free(tid_writer);
	398	free(count_reader);
	399	free(count_writer);
	400	free(tot_nr_reads);
	401	free(tot_nr_writes);
	402	return 0;
	403	}