[urcu.git] / tests / test_perthreadlock.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;
};

struct per_thread_lock {
	pthread_mutex_t lock;
} __attribute__((aligned(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;

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(&per_thread_lock[tidx].lock);
		assert(test_array.a == 8);
		if (unlikely(rduration))
			loop_sleep(rduration);
		pthread_mutex_unlock(&per_thread_lock[tidx].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;
	long tidx;

	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 (;;) {
		for (tidx = 0; tidx < nr_readers; tidx++) {
			pthread_mutex_lock(&per_thread_lock[tidx].lock);
		}
		test_array.a = 0;
		test_array.a = 8;
		for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
			pthread_mutex_unlock(&per_thread_lock[tidx].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);
	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);
	}

	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);
	free(per_thread_lock);
	return 0;
}
Commit	Line	Data
0ee8bb0a 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
9e97e478	23	#define _GNU_SOURCE
d8540fc5	24	#include "../config.h"
0ee8bb0a 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>
9e97e478	35	#include <sched.h>
94b343fd	36	#include <errno.h>
0ee8bb0a	37
ec4e58a3	38	#include <urcu/arch.h>
0ee8bb0a	39
2a7ac59d MD	40	/* hardcoded number of CPUs */
	41	#define NR_CPUS 16384
	42
0ee8bb0a 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>
0ee8bb0a MD	64
	65	struct test_array {
	66	int a;
	67	};
	68
	69	struct per_thread_lock {
	70	pthread_mutex_t lock;
55271c13	71	} __attribute__((aligned(CACHE_LINE_SIZE))); /* cache-line aligned */
0ee8bb0a MD	72
	73	static struct per_thread_lock *per_thread_lock;
	74
78efb485	75	static volatile int test_go, test_stop;
0ee8bb0a	76
9e31d0f0	77	static unsigned long wdelay;
0ee8bb0a	78
2b4e4125	79	static volatile struct test_array test_array = { 8 };
0ee8bb0a MD	80
0ee8bb0a MD	81	static unsigned long duration;
0ee8bb0a	82
daddf5b0	83	/* read-side C.S. duration, in loops */
8b632bab MD	84	static unsigned long rduration;
8b632bab MD	85
daddf5b0 MD	86	static inline void loop_sleep(unsigned long l)
	87	{
	88	while(l-- != 0)
	89	cpu_relax();
	90	}
	91
4bad7d45 MD	92	static int verbose_mode;
	93
	94	#define printf_verbose(fmt, args...) \
	95	do { \
	96	if (verbose_mode) \
	97	printf(fmt, args); \
	98	} while (0)
	99
2a7ac59d MD	100	static unsigned int cpu_affinities[NR_CPUS];
	101	static unsigned int next_aff = 0;
	102	static int use_affinity = 0;
	103
6af882ba MD	104	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	105
d8540fc5 PA	106	#ifndef HAVE_CPU_SET_T
	107	typedef unsigned long cpu_set_t;
	108	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	109	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	110	#endif
	111
2a7ac59d MD	112	static void set_affinity(void)
	113	{
	114	cpu_set_t mask;
	115	int cpu;
6af882ba	116	int ret;
2a7ac59d MD	117
	118	if (!use_affinity)
	119	return;
	120
d8540fc5	121	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	122	ret = pthread_mutex_lock(&affinity_mutex);
	123	if (ret) {
	124	perror("Error in pthread mutex lock");
	125	exit(-1);
	126	}
2a7ac59d	127	cpu = cpu_affinities[next_aff++];
6af882ba MD	128	ret = pthread_mutex_unlock(&affinity_mutex);
	129	if (ret) {
	130	perror("Error in pthread mutex unlock");
	131	exit(-1);
	132	}
2a7ac59d MD	133	CPU_ZERO(&mask);
2a7ac59d MD	134	CPU_SET(cpu, &mask);
d8540fc5 PA	135	#if SCHED_SETAFFINITY_ARGS == 2
	136	sched_setaffinity(0, &mask);
	137	#else
2a7ac59d	138	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	139	#endif
d8540fc5 PA	140	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	141	}
2a7ac59d MD	142
0ee8bb0a MD	143	/*
	144	* returns 0 if test should end.
	145	*/
	146	static int test_duration_write(void)
	147	{
78efb485	148	return !test_stop;
0ee8bb0a MD	149	}
	150
	151	static int test_duration_read(void)
	152	{
78efb485	153	return !test_stop;
0ee8bb0a MD	154	}
	155
	156	static unsigned long long __thread nr_writes;
	157	static unsigned long long __thread nr_reads;
	158
55271c13 MD	159	static
	160	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes;
	161	static
	162	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	163
	164	static unsigned int nr_readers;
	165	static unsigned int nr_writers;
	166
	167	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	168
	169	void rcu_copy_mutex_lock(void)
	170	{
	171	int ret;
	172	ret = pthread_mutex_lock(&rcu_copy_mutex);
	173	if (ret) {
	174	perror("Error in pthread mutex lock");
	175	exit(-1);
	176	}
	177	}
	178
	179	void rcu_copy_mutex_unlock(void)
	180	{
	181	int ret;
	182
	183	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	184	if (ret) {
	185	perror("Error in pthread mutex unlock");
	186	exit(-1);
	187	}
	188	}
	189
	190	void thr_reader(void data)
	191	{
	192	unsigned long tidx = (unsigned long)data;
	193
4bad7d45	194	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	195	"reader", pthread_self(), (unsigned long)gettid());
0ee8bb0a MD	196
2a7ac59d MD	197	set_affinity();
2a7ac59d MD	198
0ee8bb0a MD	199	while (!test_go)
	200	{
	201	}
	202
	203	for (;;) {
	204	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	205	assert(test_array.a == 8);
8b632bab	206	if (unlikely(rduration))
daddf5b0	207	loop_sleep(rduration);
0ee8bb0a MD	208	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a MD	209	nr_reads++;
59d5a406	210	if (unlikely(!test_duration_read()))
0ee8bb0a MD	211	break;
	212	}
	213
	214	tot_nr_reads[tidx] = nr_reads;
cda3c71d	215	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	216	"reader", pthread_self(), (unsigned long)gettid());
	217	return ((void*)1);
	218
	219	}
	220
	221	void thr_writer(void data)
	222	{
	223	unsigned long wtidx = (unsigned long)data;
	224	long tidx;
	225
4bad7d45	226	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	227	"writer", pthread_self(), (unsigned long)gettid());
0ee8bb0a MD	228
2a7ac59d MD	229	set_affinity();
2a7ac59d MD	230
0ee8bb0a MD	231	while (!test_go)
	232	{
	233	}
	234	smp_mb();
	235
	236	for (;;) {
	237	for (tidx = 0; tidx < nr_readers; tidx++) {
	238	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	239	}
2b4e4125	240	test_array.a = 0;
0ee8bb0a	241	test_array.a = 8;
f120cc10	242	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
0ee8bb0a MD	243	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
	244	}
	245	nr_writes++;
59d5a406	246	if (unlikely(!test_duration_write()))
0ee8bb0a	247	break;
59d5a406	248	if (unlikely(wdelay))
9e31d0f0	249	loop_sleep(wdelay);
0ee8bb0a MD	250	}
0ee8bb0a MD	251
4bad7d45	252	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	253	"writer", pthread_self(), (unsigned long)gettid());
	254	tot_nr_writes[wtidx] = nr_writes;
	255	return ((void*)2);
	256	}
	257
	258	void show_usage(int argc, char **argv)
	259	{
	260	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	261	#ifdef DEBUG_YIELD
	262	printf(" [-r] [-w] (yield reader and/or writer)");
	263	#endif
	264	printf(" [-d delay] (writer period (us))");
daddf5b0	265	printf(" [-c duration] (reader C.S. duration (in loops))");
4bad7d45	266	printf(" [-v] (verbose output)");
9e97e478	267	printf(" [-a cpu#] [-a cpu#]... (affinity)");
0ee8bb0a MD	268	printf("\n");
	269	}
	270
	271	int main(int argc, char **argv)
	272	{
	273	int err;
	274	pthread_t tid_reader, tid_writer;
	275	void *tret;
	276	unsigned long long count_reader, count_writer;
	277	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	278	int i, a;
0ee8bb0a MD	279
	280	if (argc < 4) {
	281	show_usage(argc, argv);
	282	return -1;
	283	}
	284	smp_mb();
	285
	286	err = sscanf(argv[1], "%u", &nr_readers);
	287	if (err != 1) {
	288	show_usage(argc, argv);
	289	return -1;
	290	}
	291
	292	err = sscanf(argv[2], "%u", &nr_writers);
	293	if (err != 1) {
	294	show_usage(argc, argv);
	295	return -1;
	296	}
	297
	298	err = sscanf(argv[3], "%lu", &duration);
	299	if (err != 1) {
	300	show_usage(argc, argv);
	301	return -1;
	302	}
	303
	304	for (i = 4; i < argc; i++) {
	305	if (argv[i][0] != '-')
	306	continue;
	307	switch (argv[i][1]) {
	308	#ifdef DEBUG_YIELD
	309	case 'r':
	310	yield_active \|= YIELD_READ;
	311	break;
	312	case 'w':
	313	yield_active \|= YIELD_WRITE;
	314	break;
	315	#endif
9e97e478 MD	316	case 'a':
	317	if (argc < i + 2) {
	318	show_usage(argc, argv);
	319	return -1;
	320	}
	321	a = atoi(argv[++i]);
2a7ac59d	322	cpu_affinities[next_aff++] = a;
9e97e478	323	use_affinity = 1;
4bad7d45	324	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	325	break;
8b632bab MD	326	case 'c':
	327	if (argc < i + 2) {
	328	show_usage(argc, argv);
	329	return -1;
	330	}
9e31d0f0	331	rduration = atol(argv[++i]);
8b632bab	332	break;
0ee8bb0a MD	333	case 'd':
	334	if (argc < i + 2) {
	335	show_usage(argc, argv);
	336	return -1;
	337	}
9e31d0f0	338	wdelay = atol(argv[++i]);
0ee8bb0a	339	break;
4bad7d45 MD	340	case 'v':
	341	verbose_mode = 1;
	342	break;
0ee8bb0a MD	343	}
	344	}
	345
4bad7d45	346	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	347	duration, nr_readers, nr_writers);
9e31d0f0	348	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	349	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	350	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	351	"main", pthread_self(), (unsigned long)gettid());
	352
	353	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	354	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	355	count_reader = malloc(sizeof(count_reader) nr_readers);
	356	count_writer = malloc(sizeof(count_writer) nr_writers);
	357	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	358	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	359	per_thread_lock = malloc(sizeof(per_thread_lock) nr_readers);
	360
2a7ac59d MD	361	next_aff = 0;
2a7ac59d MD	362
0ee8bb0a MD	363	for (i = 0; i < nr_readers; i++) {
	364	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	365	(void *)(long)i);
	366	if (err != 0)
	367	exit(1);
	368	}
	369	for (i = 0; i < nr_writers; i++) {
	370	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	371	(void *)(long)i);
	372	if (err != 0)
	373	exit(1);
	374	}
	375
0ee8bb0a MD	376	smp_mb();
0ee8bb0a MD	377
78efb485 MD	378	test_go = 1;
	379
	380	sleep(duration);
	381
	382	test_stop = 1;
	383
0ee8bb0a MD	384	for (i = 0; i < nr_readers; i++) {
	385	err = pthread_join(tid_reader[i], &tret);
	386	if (err != 0)
	387	exit(1);
	388	tot_reads += tot_nr_reads[i];
	389	}
	390	for (i = 0; i < nr_writers; i++) {
	391	err = pthread_join(tid_writer[i], &tret);
	392	if (err != 0)
	393	exit(1);
	394	tot_writes += tot_nr_writes[i];
	395	}
4bad7d45 MD	396
4bad7d45 MD	397	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	398	tot_writes);
6a190115	399	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu "
cda3c71d	400	"nr_writers %3u "
9e31d0f0	401	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
4bad7d45 MD	402	argv[0], duration, nr_readers, rduration,
	403	nr_writers, wdelay, tot_reads, tot_writes,
	404	tot_reads + tot_writes);
	405
0ee8bb0a MD	406	free(tid_reader);
	407	free(tid_writer);
	408	free(count_reader);
	409	free(count_writer);
	410	free(tot_nr_reads);
	411	free(tot_nr_writes);
	412	free(per_thread_lock);
	413	return 0;
	414	}