[urcu.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 <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;

/* write-side C.S. duration, in loops */
static unsigned long wduration;

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;
		if (unlikely(wduration))
			loop_sleep(wduration);
		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(" [-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;
	}
	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);
	}

	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
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>
	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
31b598e0 MD	86	/* write-side C.S. duration, in loops */
	87	static unsigned long wduration;
	88
daddf5b0 MD	89	static inline void loop_sleep(unsigned long l)
	90	{
	91	while(l-- != 0)
	92	cpu_relax();
	93	}
	94
4bad7d45 MD	95	static int verbose_mode;
	96
	97	#define printf_verbose(fmt, args...) \
	98	do { \
	99	if (verbose_mode) \
	100	printf(fmt, args); \
	101	} while (0)
	102
2a7ac59d MD	103	static unsigned int cpu_affinities[NR_CPUS];
	104	static unsigned int next_aff = 0;
	105	static int use_affinity = 0;
	106
6af882ba MD	107	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	108
d8540fc5 PA	109	#ifndef HAVE_CPU_SET_T
	110	typedef unsigned long cpu_set_t;
	111	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	112	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	113	#endif
	114
2a7ac59d MD	115	static void set_affinity(void)
	116	{
	117	cpu_set_t mask;
	118	int cpu;
6af882ba	119	int ret;
2a7ac59d MD	120
	121	if (!use_affinity)
	122	return;
	123
d8540fc5	124	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	125	ret = pthread_mutex_lock(&affinity_mutex);
	126	if (ret) {
	127	perror("Error in pthread mutex lock");
	128	exit(-1);
	129	}
2a7ac59d	130	cpu = cpu_affinities[next_aff++];
6af882ba MD	131	ret = pthread_mutex_unlock(&affinity_mutex);
	132	if (ret) {
	133	perror("Error in pthread mutex unlock");
	134	exit(-1);
	135	}
2a7ac59d MD	136	CPU_ZERO(&mask);
2a7ac59d MD	137	CPU_SET(cpu, &mask);
d8540fc5 PA	138	#if SCHED_SETAFFINITY_ARGS == 2
	139	sched_setaffinity(0, &mask);
	140	#else
2a7ac59d	141	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	142	#endif
d8540fc5 PA	143	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	144	}
2a7ac59d MD	145
0ee8bb0a MD	146	/*
	147	* returns 0 if test should end.
	148	*/
	149	static int test_duration_write(void)
	150	{
78efb485	151	return !test_stop;
0ee8bb0a MD	152	}
	153
	154	static int test_duration_read(void)
	155	{
78efb485	156	return !test_stop;
0ee8bb0a MD	157	}
	158
	159	static unsigned long long __thread nr_writes;
	160	static unsigned long long __thread nr_reads;
	161
55271c13 MD	162	static
	163	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes;
	164	static
	165	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	166
	167	static unsigned int nr_readers;
	168	static unsigned int nr_writers;
	169
	170	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	171
	172	void rcu_copy_mutex_lock(void)
	173	{
	174	int ret;
	175	ret = pthread_mutex_lock(&rcu_copy_mutex);
	176	if (ret) {
	177	perror("Error in pthread mutex lock");
	178	exit(-1);
	179	}
	180	}
	181
	182	void rcu_copy_mutex_unlock(void)
	183	{
	184	int ret;
	185
	186	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	187	if (ret) {
	188	perror("Error in pthread mutex unlock");
	189	exit(-1);
	190	}
	191	}
	192
	193	void thr_reader(void data)
	194	{
	195	unsigned long tidx = (unsigned long)data;
	196
4bad7d45	197	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	198	"reader", pthread_self(), (unsigned long)gettid());
0ee8bb0a MD	199
2a7ac59d MD	200	set_affinity();
2a7ac59d MD	201
0ee8bb0a MD	202	while (!test_go)
	203	{
	204	}
	205
	206	for (;;) {
	207	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	208	assert(test_array.a == 8);
8b632bab	209	if (unlikely(rduration))
daddf5b0	210	loop_sleep(rduration);
0ee8bb0a MD	211	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a MD	212	nr_reads++;
59d5a406	213	if (unlikely(!test_duration_read()))
0ee8bb0a MD	214	break;
	215	}
	216
	217	tot_nr_reads[tidx] = nr_reads;
cda3c71d	218	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	219	"reader", pthread_self(), (unsigned long)gettid());
	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",
0ee8bb0a MD	230	"writer", pthread_self(), (unsigned long)gettid());
0ee8bb0a MD	231
2a7ac59d MD	232	set_affinity();
2a7ac59d MD	233
0ee8bb0a MD	234	while (!test_go)
	235	{
	236	}
	237	smp_mb();
	238
	239	for (;;) {
	240	for (tidx = 0; tidx < nr_readers; tidx++) {
	241	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	242	}
2b4e4125	243	test_array.a = 0;
0ee8bb0a	244	test_array.a = 8;
31b598e0 MD	245	if (unlikely(wduration))
31b598e0 MD	246	loop_sleep(wduration);
f120cc10	247	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
0ee8bb0a MD	248	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
	249	}
	250	nr_writes++;
59d5a406	251	if (unlikely(!test_duration_write()))
0ee8bb0a	252	break;
59d5a406	253	if (unlikely(wdelay))
9e31d0f0	254	loop_sleep(wdelay);
0ee8bb0a MD	255	}
0ee8bb0a MD	256
4bad7d45	257	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	258	"writer", pthread_self(), (unsigned long)gettid());
	259	tot_nr_writes[wtidx] = nr_writes;
	260	return ((void*)2);
	261	}
	262
	263	void show_usage(int argc, char **argv)
	264	{
	265	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	266	#ifdef DEBUG_YIELD
	267	printf(" [-r] [-w] (yield reader and/or writer)");
	268	#endif
	269	printf(" [-d delay] (writer period (us))");
daddf5b0	270	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	271	printf(" [-e duration] (writer C.S. duration (in loops))");
4bad7d45	272	printf(" [-v] (verbose output)");
9e97e478	273	printf(" [-a cpu#] [-a cpu#]... (affinity)");
0ee8bb0a MD	274	printf("\n");
	275	}
	276
	277	int main(int argc, char **argv)
	278	{
	279	int err;
	280	pthread_t tid_reader, tid_writer;
	281	void *tret;
	282	unsigned long long count_reader, count_writer;
	283	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	284	int i, a;
0ee8bb0a MD	285
	286	if (argc < 4) {
	287	show_usage(argc, argv);
	288	return -1;
	289	}
	290	smp_mb();
	291
	292	err = sscanf(argv[1], "%u", &nr_readers);
	293	if (err != 1) {
	294	show_usage(argc, argv);
	295	return -1;
	296	}
	297
	298	err = sscanf(argv[2], "%u", &nr_writers);
	299	if (err != 1) {
	300	show_usage(argc, argv);
	301	return -1;
	302	}
	303
	304	err = sscanf(argv[3], "%lu", &duration);
	305	if (err != 1) {
	306	show_usage(argc, argv);
	307	return -1;
	308	}
	309
	310	for (i = 4; i < argc; i++) {
	311	if (argv[i][0] != '-')
	312	continue;
	313	switch (argv[i][1]) {
	314	#ifdef DEBUG_YIELD
	315	case 'r':
	316	yield_active \|= YIELD_READ;
	317	break;
	318	case 'w':
	319	yield_active \|= YIELD_WRITE;
	320	break;
	321	#endif
9e97e478 MD	322	case 'a':
	323	if (argc < i + 2) {
	324	show_usage(argc, argv);
	325	return -1;
	326	}
	327	a = atoi(argv[++i]);
2a7ac59d	328	cpu_affinities[next_aff++] = a;
9e97e478	329	use_affinity = 1;
4bad7d45	330	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	331	break;
8b632bab MD	332	case 'c':
	333	if (argc < i + 2) {
	334	show_usage(argc, argv);
	335	return -1;
	336	}
9e31d0f0	337	rduration = atol(argv[++i]);
8b632bab	338	break;
0ee8bb0a MD	339	case 'd':
	340	if (argc < i + 2) {
	341	show_usage(argc, argv);
	342	return -1;
	343	}
9e31d0f0	344	wdelay = atol(argv[++i]);
0ee8bb0a	345	break;
31b598e0 MD	346	case 'e':
	347	if (argc < i + 2) {
	348	show_usage(argc, argv);
	349	return -1;
	350	}
	351	wduration = atol(argv[++i]);
	352	break;
4bad7d45 MD	353	case 'v':
	354	verbose_mode = 1;
	355	break;
0ee8bb0a MD	356	}
	357	}
	358
4bad7d45	359	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	360	duration, nr_readers, nr_writers);
9e31d0f0	361	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	362	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	363	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	364	"main", pthread_self(), (unsigned long)gettid());
	365
	366	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	367	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	368	count_reader = malloc(sizeof(count_reader) nr_readers);
	369	count_writer = malloc(sizeof(count_writer) nr_writers);
	370	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	371	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	372	per_thread_lock = malloc(sizeof(per_thread_lock) nr_readers);
	373
2a7ac59d MD	374	next_aff = 0;
2a7ac59d MD	375
0ee8bb0a MD	376	for (i = 0; i < nr_readers; i++) {
	377	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	378	(void *)(long)i);
	379	if (err != 0)
	380	exit(1);
	381	}
	382	for (i = 0; i < nr_writers; i++) {
	383	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	384	(void *)(long)i);
	385	if (err != 0)
	386	exit(1);
	387	}
	388
0ee8bb0a MD	389	smp_mb();
0ee8bb0a MD	390
78efb485 MD	391	test_go = 1;
	392
	393	sleep(duration);
	394
	395	test_stop = 1;
	396
0ee8bb0a MD	397	for (i = 0; i < nr_readers; i++) {
	398	err = pthread_join(tid_reader[i], &tret);
	399	if (err != 0)
	400	exit(1);
	401	tot_reads += tot_nr_reads[i];
	402	}
	403	for (i = 0; i < nr_writers; i++) {
	404	err = pthread_join(tid_writer[i], &tret);
	405	if (err != 0)
	406	exit(1);
	407	tot_writes += tot_nr_writes[i];
	408	}
4bad7d45 MD	409
4bad7d45 MD	410	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	411	tot_writes);
a50a7b43	412	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	413	"nr_writers %3u "
9e31d0f0	414	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	415	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	416	nr_writers, wdelay, tot_reads, tot_writes,
	417	tot_reads + tot_writes);
	418
0ee8bb0a MD	419	free(tid_reader);
	420	free(tid_writer);
	421	free(count_reader);
	422	free(count_writer);
	423	free(tot_nr_reads);
	424	free(tot_nr_writes);
	425	free(per_thread_lock);
	426	return 0;
	427	}