[urcu.git] / tests / benchmark / test_urcu_defer.c

// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later

/*
 * Userspace RCU library - test program (with automatic reclamation)
 */

#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
ce29b371 MJ	1	// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	2	//
	3	// SPDX-License-Identifier: GPL-2.0-or-later
	4
90075a50	5	/*
90075a50	6	* Userspace RCU library - test program (with automatic reclamation)
90075a50 MD	7	*/
90075a50 MD	8
90075a50 MD	9	#include <stdio.h>
	10	#include <pthread.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <sys/types.h>
	14	#include <sys/wait.h>
	15	#include <unistd.h>
	16	#include <stdio.h>
94b343fd	17	#include <errno.h>
90075a50	18
ec4e58a3	19	#include <urcu/arch.h>
01477510	20	#include <urcu/assert.h>
bd252a04	21	#include <urcu/tls-compat.h>
94df6318	22	#include "thread-id.h"
2650042a	23	#include "../common/debug-yield.h"
65fcc7e9	24
90075a50 MD	25	/* hardcoded number of CPUs */
	26	#define NR_CPUS 16384
	27
90075a50 MD	28	#ifndef DYNAMIC_LINK_TEST
90075a50 MD	29	#define _LGPL_SOURCE
90075a50	30	#endif
ec4e58a3 MD	31	#include <urcu.h>
ec4e58a3 MD	32	#include <urcu-defer.h>
90075a50 MD	33
	34	struct test_array {
	35	int a;
	36	};
	37
	38	static volatile int test_go, test_stop;
	39
	40	static unsigned long wdelay;
	41
	42	static struct test_array *test_rcu_pointer;
	43
	44	static unsigned long duration;
	45
	46	/* read-side C.S. duration, in loops */
	47	static unsigned long rduration;
	48
31b598e0 MD	49	/* write-side C.S. duration, in loops */
	50	static unsigned long wduration;
	51
ab0aacbe	52	static inline void loop_sleep(unsigned long loops)
90075a50	53	{
ab0aacbe	54	while (loops-- != 0)
06f22bdb	55	caa_cpu_relax();
90075a50 MD	56	}
	57
	58	static int verbose_mode;
	59
	60	#define printf_verbose(fmt, args...) \
	61	do { \
	62	if (verbose_mode) \
	63	printf(fmt, args); \
	64	} while (0)
	65
	66	static unsigned int cpu_affinities[NR_CPUS];
	67	static unsigned int next_aff = 0;
	68	static int use_affinity = 0;
	69
	70	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	71
	72	static void set_affinity(void)
	73	{
2388c075	74	#ifdef HAVE_SCHED_SETAFFINITY
90075a50	75	cpu_set_t mask;
95bc7fb9 MD	76	int cpu, ret;
95bc7fb9 MD	77	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	78
	79	if (!use_affinity)
	80	return;
	81
2388c075	82	#ifdef HAVE_SCHED_SETAFFINITY
90075a50 MD	83	ret = pthread_mutex_lock(&affinity_mutex);
	84	if (ret) {
	85	perror("Error in pthread mutex lock");
	86	exit(-1);
	87	}
	88	cpu = cpu_affinities[next_aff++];
	89	ret = pthread_mutex_unlock(&affinity_mutex);
	90	if (ret) {
	91	perror("Error in pthread mutex unlock");
	92	exit(-1);
	93	}
d8540fc5	94
90075a50 MD	95	CPU_ZERO(&mask);
	96	CPU_SET(cpu, &mask);
	97	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5	98	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	99	}
	100
	101	/*
	102	* returns 0 if test should end.
	103	*/
	104	static int test_duration_write(void)
	105	{
	106	return !test_stop;
	107	}
	108
	109	static int test_duration_read(void)
	110	{
	111	return !test_stop;
	112	}
	113
bd252a04 MD	114	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	115	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
90075a50 MD	116
90075a50 MD	117	static
06f22bdb	118	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
90075a50 MD	119
	120	static unsigned int nr_readers;
	121	static unsigned int nr_writers;
	122
	123	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	124
61c3fb60	125	static
90075a50 MD	126	void thr_reader(void _count)
	127	{
	128	unsigned long long *count = _count;
	129	struct test_array *local_ptr;
	130
94df6318 MD	131	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	132	"reader", urcu_get_thread_id());
90075a50 MD	133
	134	set_affinity();
	135
	136	rcu_register_thread();
	137
	138	while (!test_go)
	139	{
	140	}
5481ddb3	141	cmm_smp_mb();
90075a50 MD	142
	143	for (;;) {
	144	rcu_read_lock();
	145	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	146	rcu_debug_yield_read();
90075a50	147	if (local_ptr)
01477510	148	urcu_posix_assert(local_ptr->a == 8);
a0b7f7ea	149	if (caa_unlikely(rduration))
90075a50 MD	150	loop_sleep(rduration);
90075a50 MD	151	rcu_read_unlock();
bd252a04	152	URCU_TLS(nr_reads)++;
a0b7f7ea	153	if (caa_unlikely(!test_duration_read()))
90075a50 MD	154	break;
	155	}
	156
	157	rcu_unregister_thread();
	158
bd252a04	159	*count = URCU_TLS(nr_reads);
94df6318 MD	160	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	161	"reader", urcu_get_thread_id());
90075a50 MD	162	return ((void*)1);
	163
	164	}
	165
70469b43	166	static void test_cb2(void *data __attribute__((unused)))
804b4375 MD	167	{
	168	}
	169
70469b43	170	static void test_cb1(void *data __attribute__((unused)))
804b4375 MD	171	{
	172	}
	173
61c3fb60	174	static
90075a50 MD	175	void thr_writer(void data)
	176	{
	177	unsigned long wtidx = (unsigned long)data;
	178	struct test_array new, old = NULL;
6ade67d5	179	int ret;
90075a50	180
94df6318 MD	181	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	182	"writer", urcu_get_thread_id());
90075a50 MD	183
	184	set_affinity();
	185
6ade67d5 MD	186	ret = rcu_defer_register_thread();
	187	if (ret) {
	188	printf("Error in rcu_defer_register_thread\n");
	189	exit(-1);
	190	}
90075a50 MD	191
	192	while (!test_go)
	193	{
	194	}
5481ddb3	195	cmm_smp_mb();
90075a50 MD	196
	197	for (;;) {
	198	new = malloc(sizeof(*new));
	199	new->a = 8;
	200	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	201	if (caa_unlikely(wduration))
31b598e0	202	loop_sleep(wduration);
b4f313b7 MD	203	defer_rcu(free, old);
	204	defer_rcu(test_cb1, old);
	205	defer_rcu(test_cb1, (void *)-2L);
	206	defer_rcu(test_cb1, (void *)-2L);
	207	defer_rcu(test_cb1, old);
	208	defer_rcu(test_cb2, (void *)-2L);
	209	defer_rcu(test_cb2, (void *)-4L);
	210	defer_rcu(test_cb2, (void *)-2L);
bd252a04	211	URCU_TLS(nr_writes)++;
a0b7f7ea	212	if (caa_unlikely(!test_duration_write()))
90075a50	213	break;
a0b7f7ea	214	if (caa_unlikely(wdelay))
90075a50 MD	215	loop_sleep(wdelay);
	216	}
	217
786ee85b	218	rcu_defer_unregister_thread();
90075a50	219
94df6318 MD	220	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	221	"writer", urcu_get_thread_id());
bd252a04	222	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
90075a50 MD	223	return ((void*)2);
	224	}
	225
61c3fb60	226	static
70469b43	227	void show_usage(char **argv)
90075a50	228	{
06637138 MD	229	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	230	argv[0]);
	231	printf("OPTIONS:\n");
06637138	232	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	233	printf(" [-d delay] (writer period (us))\n");
	234	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	235	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	236	printf(" [-v] (verbose output)\n");
	237	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
90075a50 MD	238	printf("\n");
	239	}
	240
	241	int main(int argc, char **argv)
	242	{
	243	int err;
	244	pthread_t tid_reader, tid_writer;
	245	void *tret;
	246	unsigned long long *count_reader;
	247	unsigned long long tot_reads = 0, tot_writes = 0;
	248	int i, a;
83e334d0	249	unsigned int i_thr;
90075a50 MD	250
90075a50 MD	251	if (argc < 4) {
70469b43	252	show_usage(argv);
90075a50 MD	253	return -1;
	254	}
	255
	256	err = sscanf(argv[1], "%u", &nr_readers);
	257	if (err != 1) {
70469b43	258	show_usage(argv);
90075a50 MD	259	return -1;
	260	}
	261
	262	err = sscanf(argv[2], "%u", &nr_writers);
	263	if (err != 1) {
70469b43	264	show_usage(argv);
90075a50 MD	265	return -1;
90075a50 MD	266	}
83e334d0	267
90075a50 MD	268	err = sscanf(argv[3], "%lu", &duration);
90075a50 MD	269	if (err != 1) {
70469b43	270	show_usage(argv);
90075a50 MD	271	return -1;
	272	}
	273
	274	for (i = 4; i < argc; i++) {
	275	if (argv[i][0] != '-')
	276	continue;
	277	switch (argv[i][1]) {
90075a50	278	case 'r':
2650042a	279	rcu_debug_yield_enable(RCU_YIELD_READ);
90075a50 MD	280	break;
90075a50 MD	281	case 'w':
2650042a	282	rcu_debug_yield_enable(RCU_YIELD_WRITE);
90075a50	283	break;
90075a50 MD	284	case 'a':
90075a50 MD	285	if (argc < i + 2) {
70469b43	286	show_usage(argv);
90075a50 MD	287	return -1;
	288	}
	289	a = atoi(argv[++i]);
	290	cpu_affinities[next_aff++] = a;
	291	use_affinity = 1;
	292	printf_verbose("Adding CPU %d affinity\n", a);
	293	break;
	294	case 'c':
	295	if (argc < i + 2) {
70469b43	296	show_usage(argv);
90075a50 MD	297	return -1;
	298	}
	299	rduration = atol(argv[++i]);
	300	break;
	301	case 'd':
	302	if (argc < i + 2) {
70469b43	303	show_usage(argv);
90075a50 MD	304	return -1;
	305	}
	306	wdelay = atol(argv[++i]);
	307	break;
31b598e0 MD	308	case 'e':
31b598e0 MD	309	if (argc < i + 2) {
70469b43	310	show_usage(argv);
31b598e0 MD	311	return -1;
	312	}
	313	wduration = atol(argv[++i]);
	314	break;
90075a50 MD	315	case 'v':
	316	verbose_mode = 1;
	317	break;
	318	}
	319	}
	320
	321	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	322	duration, nr_readers, nr_writers);
	323	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	324	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	325	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	326	"main", urcu_get_thread_id());
90075a50	327
9aa14175 MD	328	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	329	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	330	count_reader = calloc(nr_readers, sizeof(*count_reader));
	331	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
90075a50 MD	332
	333	next_aff = 0;
	334
83e334d0 MJ	335	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	336	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	337	&count_reader[i_thr]);
90075a50 MD	338	if (err != 0)
	339	exit(1);
	340	}
83e334d0 MJ	341	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	342	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	343	(void *)(long)i_thr);
90075a50 MD	344	if (err != 0)
	345	exit(1);
	346	}
	347
5481ddb3	348	cmm_smp_mb();
90075a50 MD	349
	350	test_go = 1;
	351
	352	sleep(duration);
	353
	354	test_stop = 1;
	355
83e334d0 MJ	356	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	357	err = pthread_join(tid_reader[i_thr], &tret);
90075a50 MD	358	if (err != 0)
90075a50 MD	359	exit(1);
83e334d0	360	tot_reads += count_reader[i_thr];
90075a50	361	}
83e334d0 MJ	362	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	363	err = pthread_join(tid_writer[i_thr], &tret);
90075a50 MD	364	if (err != 0)
90075a50 MD	365	exit(1);
83e334d0	366	tot_writes += tot_nr_writes[i_thr];
90075a50	367	}
83e334d0	368
90075a50 MD	369	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
90075a50 MD	370	tot_writes);
a50a7b43	371	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
90075a50 MD	372	"nr_writers %3u "
90075a50 MD	373	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	374	argv[0], duration, nr_readers, rduration, wduration,
90075a50 MD	375	nr_writers, wdelay, tot_reads, tot_writes,
	376	tot_reads + tot_writes);
	377	free(tid_reader);
	378	free(tid_writer);
	379	free(count_reader);
	380	free(tot_nr_writes);
	381
	382	return 0;
	383	}