[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 <errno.h>

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

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", (unsigned long) 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", (unsigned long) 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", (unsigned long) 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", (unsigned long) 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 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", (unsigned long) pthread_self(), (unsigned long) gettid());

	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
	for (i = 0; i < nr_readers; i++) {
		err = pthread_mutex_init(&per_thread_lock[i].lock, NULL);
		if (err != 0)
			exit(1);
	}

	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(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	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
0ee8bb0a 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
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>
94b343fd	34	#include <errno.h>
0ee8bb0a	35
ec4e58a3	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
95d8822d	38	#include "cpuset.h"
0ee8bb0a	39
65fcc7e9 MD	40	#ifdef __linux__
	41	#include <syscall.h>
	42	#endif
	43
2a7ac59d MD	44	/* hardcoded number of CPUs */
	45	#define NR_CPUS 16384
	46
0ee8bb0a MD	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
ec4e58a3	67	#include <urcu.h>
0ee8bb0a MD	68
	69	struct test_array {
	70	int a;
	71	};
	72
	73	struct per_thread_lock {
	74	pthread_mutex_t lock;
06f22bdb	75	} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
0ee8bb0a MD	76
	77	static struct per_thread_lock *per_thread_lock;
	78
78efb485	79	static volatile int test_go, test_stop;
0ee8bb0a	80
9e31d0f0	81	static unsigned long wdelay;
0ee8bb0a	82
2b4e4125	83	static volatile struct test_array test_array = { 8 };
0ee8bb0a MD	84
0ee8bb0a MD	85	static unsigned long duration;
0ee8bb0a	86
daddf5b0	87	/* read-side C.S. duration, in loops */
8b632bab MD	88	static unsigned long rduration;
8b632bab MD	89
31b598e0 MD	90	/* write-side C.S. duration, in loops */
	91	static unsigned long wduration;
	92
daddf5b0 MD	93	static inline void loop_sleep(unsigned long l)
	94	{
	95	while(l-- != 0)
06f22bdb	96	caa_cpu_relax();
daddf5b0 MD	97	}
daddf5b0 MD	98
4bad7d45 MD	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
2a7ac59d MD	107	static unsigned int cpu_affinities[NR_CPUS];
	108	static unsigned int next_aff = 0;
	109	static int use_affinity = 0;
	110
6af882ba MD	111	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	112
2a7ac59d MD	113	static void set_affinity(void)
	114	{
	115	cpu_set_t mask;
	116	int cpu;
6af882ba	117	int ret;
2a7ac59d MD	118
	119	if (!use_affinity)
	120	return;
	121
d8540fc5	122	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	123	ret = pthread_mutex_lock(&affinity_mutex);
	124	if (ret) {
	125	perror("Error in pthread mutex lock");
	126	exit(-1);
	127	}
2a7ac59d	128	cpu = cpu_affinities[next_aff++];
6af882ba MD	129	ret = pthread_mutex_unlock(&affinity_mutex);
	130	if (ret) {
	131	perror("Error in pthread mutex unlock");
	132	exit(-1);
	133	}
2a7ac59d MD	134	CPU_ZERO(&mask);
2a7ac59d MD	135	CPU_SET(cpu, &mask);
d8540fc5 PA	136	#if SCHED_SETAFFINITY_ARGS == 2
	137	sched_setaffinity(0, &mask);
	138	#else
2a7ac59d	139	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	140	#endif
d8540fc5 PA	141	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	142	}
2a7ac59d MD	143
0ee8bb0a MD	144	/*
	145	* returns 0 if test should end.
	146	*/
	147	static int test_duration_write(void)
	148	{
78efb485	149	return !test_stop;
0ee8bb0a MD	150	}
	151
	152	static int test_duration_read(void)
	153	{
78efb485	154	return !test_stop;
0ee8bb0a MD	155	}
0ee8bb0a MD	156
bd252a04 MD	157	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	158	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
0ee8bb0a	159
55271c13	160	static
06f22bdb	161	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	162	static
06f22bdb	163	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	164
	165	static unsigned int nr_readers;
	166	static unsigned int nr_writers;
	167
	168	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	169
	170	void rcu_copy_mutex_lock(void)
	171	{
	172	int ret;
	173	ret = pthread_mutex_lock(&rcu_copy_mutex);
	174	if (ret) {
	175	perror("Error in pthread mutex lock");
	176	exit(-1);
	177	}
	178	}
	179
	180	void rcu_copy_mutex_unlock(void)
	181	{
	182	int ret;
	183
	184	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	185	if (ret) {
	186	perror("Error in pthread mutex unlock");
	187	exit(-1);
	188	}
	189	}
	190
	191	void thr_reader(void data)
	192	{
	193	unsigned long tidx = (unsigned long)data;
	194
4bad7d45	195	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	196	"reader", (unsigned long) pthread_self(),
2d72fae2 MD	197	(unsigned long) gettid());
0ee8bb0a	198
2a7ac59d MD	199	set_affinity();
2a7ac59d MD	200
0ee8bb0a MD	201	while (!test_go)
	202	{
	203	}
	204
	205	for (;;) {
	206	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	207	assert(test_array.a == 8);
a0b7f7ea	208	if (caa_unlikely(rduration))
daddf5b0	209	loop_sleep(rduration);
0ee8bb0a	210	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
bd252a04	211	URCU_TLS(nr_reads)++;
a0b7f7ea	212	if (caa_unlikely(!test_duration_read()))
0ee8bb0a MD	213	break;
	214	}
	215
bd252a04	216	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
cda3c71d	217	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	218	"reader", (unsigned long) pthread_self(),
2d72fae2 MD	219	(unsigned long) gettid());
0ee8bb0a MD	220	return ((void*)1);
	221
	222	}
	223
	224	void thr_writer(void data)
	225	{
	226	unsigned long wtidx = (unsigned long)data;
	227	long tidx;
	228
4bad7d45	229	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	230	"writer", (unsigned long) pthread_self(),
2d72fae2 MD	231	(unsigned long) gettid());
0ee8bb0a	232
2a7ac59d MD	233	set_affinity();
2a7ac59d MD	234
0ee8bb0a MD	235	while (!test_go)
	236	{
	237	}
5481ddb3	238	cmm_smp_mb();
0ee8bb0a MD	239
	240	for (;;) {
	241	for (tidx = 0; tidx < nr_readers; tidx++) {
	242	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	243	}
2b4e4125	244	test_array.a = 0;
0ee8bb0a	245	test_array.a = 8;
a0b7f7ea	246	if (caa_unlikely(wduration))
31b598e0	247	loop_sleep(wduration);
f120cc10	248	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
0ee8bb0a MD	249	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a MD	250	}
bd252a04	251	URCU_TLS(nr_writes)++;
a0b7f7ea	252	if (caa_unlikely(!test_duration_write()))
0ee8bb0a	253	break;
a0b7f7ea	254	if (caa_unlikely(wdelay))
9e31d0f0	255	loop_sleep(wdelay);
0ee8bb0a MD	256	}
0ee8bb0a MD	257
4bad7d45	258	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	259	"writer", (unsigned long) pthread_self(),
2d72fae2 MD	260	(unsigned long) gettid());
bd252a04	261	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
0ee8bb0a MD	262	return ((void*)2);
	263	}
	264
	265	void show_usage(int argc, char **argv)
	266	{
	267	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	268	#ifdef DEBUG_YIELD
	269	printf(" [-r] [-w] (yield reader and/or writer)");
	270	#endif
	271	printf(" [-d delay] (writer period (us))");
daddf5b0	272	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	273	printf(" [-e duration] (writer C.S. duration (in loops))");
4bad7d45	274	printf(" [-v] (verbose output)");
9e97e478	275	printf(" [-a cpu#] [-a cpu#]... (affinity)");
0ee8bb0a MD	276	printf("\n");
	277	}
	278
	279	int main(int argc, char **argv)
	280	{
	281	int err;
	282	pthread_t tid_reader, tid_writer;
	283	void *tret;
0ee8bb0a	284	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	285	int i, a;
0ee8bb0a MD	286
	287	if (argc < 4) {
	288	show_usage(argc, argv);
	289	return -1;
	290	}
5481ddb3	291	cmm_smp_mb();
0ee8bb0a MD	292
	293	err = sscanf(argv[1], "%u", &nr_readers);
	294	if (err != 1) {
	295	show_usage(argc, argv);
	296	return -1;
	297	}
	298
	299	err = sscanf(argv[2], "%u", &nr_writers);
	300	if (err != 1) {
	301	show_usage(argc, argv);
	302	return -1;
	303	}
	304
	305	err = sscanf(argv[3], "%lu", &duration);
	306	if (err != 1) {
	307	show_usage(argc, argv);
	308	return -1;
	309	}
	310
	311	for (i = 4; i < argc; i++) {
	312	if (argv[i][0] != '-')
	313	continue;
	314	switch (argv[i][1]) {
	315	#ifdef DEBUG_YIELD
	316	case 'r':
	317	yield_active \|= YIELD_READ;
	318	break;
	319	case 'w':
	320	yield_active \|= YIELD_WRITE;
	321	break;
	322	#endif
9e97e478 MD	323	case 'a':
	324	if (argc < i + 2) {
	325	show_usage(argc, argv);
	326	return -1;
	327	}
	328	a = atoi(argv[++i]);
2a7ac59d	329	cpu_affinities[next_aff++] = a;
9e97e478	330	use_affinity = 1;
4bad7d45	331	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	332	break;
8b632bab MD	333	case 'c':
	334	if (argc < i + 2) {
	335	show_usage(argc, argv);
	336	return -1;
	337	}
9e31d0f0	338	rduration = atol(argv[++i]);
8b632bab	339	break;
0ee8bb0a MD	340	case 'd':
	341	if (argc < i + 2) {
	342	show_usage(argc, argv);
	343	return -1;
	344	}
9e31d0f0	345	wdelay = atol(argv[++i]);
0ee8bb0a	346	break;
31b598e0 MD	347	case 'e':
	348	if (argc < i + 2) {
	349	show_usage(argc, argv);
	350	return -1;
	351	}
	352	wduration = atol(argv[++i]);
	353	break;
4bad7d45 MD	354	case 'v':
	355	verbose_mode = 1;
	356	break;
0ee8bb0a MD	357	}
	358	}
	359
4bad7d45	360	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	361	duration, nr_readers, nr_writers);
9e31d0f0	362	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	363	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	364	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
2d72fae2	365	"main", (unsigned long) pthread_self(), (unsigned long) gettid());
0ee8bb0a	366
f90535ef MD	367	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	368	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	369	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	370	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	371	per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
dee09338 MD	372	for (i = 0; i < nr_readers; i++) {
	373	err = pthread_mutex_init(&per_thread_lock[i].lock, NULL);
	374	if (err != 0)
	375	exit(1);
	376	}
0ee8bb0a	377
2a7ac59d MD	378	next_aff = 0;
2a7ac59d MD	379
0ee8bb0a MD	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
5481ddb3	393	cmm_smp_mb();
0ee8bb0a	394
78efb485 MD	395	test_go = 1;
	396
	397	sleep(duration);
	398
	399	test_stop = 1;
	400
0ee8bb0a MD	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	}
4bad7d45 MD	413
4bad7d45 MD	414	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	415	tot_writes);
a50a7b43	416	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	417	"nr_writers %3u "
9e31d0f0	418	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	419	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	420	nr_writers, wdelay, tot_reads, tot_writes,
	421	tot_reads + tot_writes);
	422
0ee8bb0a MD	423	free(tid_reader);
0ee8bb0a MD	424	free(tid_writer);
0ee8bb0a MD	425	free(tot_nr_reads);
	426	free(tot_nr_writes);
	427	free(per_thread_lock);
	428	return 0;
	429	}