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

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

/*
 * Userspace RCU library - test program (with baatch 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 <urcu/uatomic.h>
#include "thread-id.h"
#include "../common/debug-yield.h"

/* hardcoded number of CPUs */
#define NR_CPUS 16384

#define _LGPL_SOURCE
#include <urcu-qsbr.h>

struct test_array {
	int a;
};

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;
static long reclaim_batch = 1;

struct reclaim_queue {
	void **queue;	/* Beginning of queue */
	void **head;	/* Insert position */
};

static struct reclaim_queue *pending_reclaims;


/* 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 */
}

static DEFINE_URCU_TLS(unsigned long long, nr_writes);
static DEFINE_URCU_TLS(unsigned long long, nr_reads);

static unsigned int nr_readers;
static unsigned int nr_writers;

pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
static
unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;

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();

	wait_until_go();

	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)++;
		/* QS each 1024 reads */
		if (caa_unlikely((URCU_TLS(nr_reads) & ((1 << 10) - 1)) == 0))
			_rcu_quiescent_state();
		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 rcu_gc_clear_queue(unsigned long wtidx)
{
	void **p;

	/* Wait for Q.S and empty queue */
	synchronize_rcu();

	for (p = pending_reclaims[wtidx].queue;
			p < pending_reclaims[wtidx].head; p++) {
		/* poison */
		if (*p)
			((struct test_array *)*p)->a = 0;
		free(*p);
	}
	pending_reclaims[wtidx].head = pending_reclaims[wtidx].queue;
}

/* Using per-thread queue */
static void rcu_gc_reclaim(unsigned long wtidx, void *old)
{
	/* Queue pointer */
	*pending_reclaims[wtidx].head = old;
	pending_reclaims[wtidx].head++;

	if (caa_likely(pending_reclaims[wtidx].head - pending_reclaims[wtidx].queue
			< reclaim_batch))
		return;

	rcu_gc_clear_queue(wtidx);
}

static
void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
#ifdef TEST_LOCAL_GC
	struct test_array *old = NULL;
#else
	struct test_array *new, *old;
#endif

	printf_verbose("thread_begin %s, tid %lu\n",
			"writer", urcu_get_thread_id());

	set_affinity();

	wait_until_go();

	for (;;) {
#ifndef TEST_LOCAL_GC
		new = malloc(sizeof(*new));
		new->a = 8;
		old = _rcu_xchg_pointer(&test_rcu_pointer, new);
#endif
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		rcu_gc_reclaim(wtidx, old);
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	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("	[-b batch] (batch reclaim)\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 'b':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			reclaim_batch = atol(argv[++i]);
			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));
	pending_reclaims = calloc(nr_writers, sizeof(*pending_reclaims));
	if (reclaim_batch * sizeof(*pending_reclaims[0].queue)
			< CAA_CACHE_LINE_SIZE)
		for (i_thr = 0; i_thr < nr_writers; i_thr++)
			pending_reclaims[i_thr].queue = calloc(1, CAA_CACHE_LINE_SIZE);
	else
		for (i_thr = 0; i_thr < nr_writers; i_thr++)
			pending_reclaims[i_thr].queue = calloc(reclaim_batch,
					sizeof(*pending_reclaims[i_thr].queue));
	for (i_thr = 0; i_thr < nr_writers; i_thr++)
		pending_reclaims[i_thr].head = pending_reclaims[i_thr].queue;

	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);
	}

	test_for(duration);

	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];
		rcu_gc_clear_queue(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 "
		"batch %ld\n",
		argv[0], duration, nr_readers, rduration, wduration,
		nr_writers, wdelay, tot_reads, tot_writes,
		tot_reads + tot_writes, reclaim_batch);

	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(tot_nr_writes);

	for (i_thr = 0; i_thr < nr_writers; i_thr++)
		free(pending_reclaims[i_thr].queue);
	free(pending_reclaims);

	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
de10a585	5	/*
de10a585	6	* Userspace RCU library - test program (with baatch reclamation)
de10a585 MD	7	*/
de10a585 MD	8
de10a585 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>
de10a585 MD	17	#include <errno.h>
	18
	19	#include <urcu/arch.h>
01477510	20	#include <urcu/assert.h>
bd252a04	21	#include <urcu/tls-compat.h>
9e4e7ad1	22	#include <urcu/uatomic.h>
94df6318	23	#include "thread-id.h"
2650042a	24	#include "../common/debug-yield.h"
de10a585 MD	25
	26	/* hardcoded number of CPUs */
	27	#define NR_CPUS 16384
	28
de10a585 MD	29	#define _LGPL_SOURCE
	30	#include <urcu-qsbr.h>
	31
	32	struct test_array {
	33	int a;
	34	};
	35
de10a585 MD	36	static unsigned long wdelay;
	37
	38	static struct test_array *test_rcu_pointer;
	39
	40	static unsigned long duration;
	41
	42	/* read-side C.S. duration, in loops */
	43	static unsigned long rduration;
d266df35	44	static long reclaim_batch = 1;
de10a585 MD	45
	46	struct reclaim_queue {
	47	void *queue; / Beginning of queue */
	48	void *head; / Insert position */
	49	};
	50
	51	static struct reclaim_queue *pending_reclaims;
	52
	53
	54	/* write-side C.S. duration, in loops */
	55	static unsigned long wduration;
	56
ab0aacbe	57	static inline void loop_sleep(unsigned long loops)
de10a585	58	{
ab0aacbe	59	while (loops-- != 0)
de10a585 MD	60	caa_cpu_relax();
	61	}
	62
	63	static int verbose_mode;
	64
	65	#define printf_verbose(fmt, args...) \
	66	do { \
	67	if (verbose_mode) \
	68	printf(fmt, args); \
	69	} while (0)
	70
	71	static unsigned int cpu_affinities[NR_CPUS];
	72	static unsigned int next_aff = 0;
	73	static int use_affinity = 0;
	74
	75	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	76
de10a585 MD	77	static void set_affinity(void)
de10a585 MD	78	{
2388c075	79	#ifdef HAVE_SCHED_SETAFFINITY
de10a585	80	cpu_set_t mask;
95bc7fb9 MD	81	int cpu, ret;
95bc7fb9 MD	82	#endif /* HAVE_SCHED_SETAFFINITY */
de10a585 MD	83
	84	if (!use_affinity)
	85	return;
	86
2388c075	87	#ifdef HAVE_SCHED_SETAFFINITY
de10a585 MD	88	ret = pthread_mutex_lock(&affinity_mutex);
	89	if (ret) {
	90	perror("Error in pthread mutex lock");
	91	exit(-1);
	92	}
	93	cpu = cpu_affinities[next_aff++];
	94	ret = pthread_mutex_unlock(&affinity_mutex);
	95	if (ret) {
	96	perror("Error in pthread mutex unlock");
	97	exit(-1);
	98	}
	99
	100	CPU_ZERO(&mask);
	101	CPU_SET(cpu, &mask);
de10a585	102	sched_setaffinity(0, sizeof(mask), &mask);
de10a585 MD	103	#endif /* HAVE_SCHED_SETAFFINITY */
	104	}
	105
bd252a04 MD	106	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	107	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
de10a585 MD	108
	109	static unsigned int nr_readers;
	110	static unsigned int nr_writers;
	111
	112	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	113	static
	114	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
	115
61c3fb60	116	static
de10a585 MD	117	void thr_reader(void _count)
	118	{
	119	unsigned long long *count = _count;
	120	struct test_array *local_ptr;
	121
94df6318 MD	122	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	123	"reader", urcu_get_thread_id());
de10a585 MD	124
	125	set_affinity();
	126
	127	rcu_register_thread();
	128
9e4e7ad1	129	wait_until_go();
de10a585 MD	130
	131	for (;;) {
	132	_rcu_read_lock();
	133	local_ptr = _rcu_dereference(test_rcu_pointer);
1de4df4b	134	rcu_debug_yield_read();
de10a585	135	if (local_ptr)
01477510	136	urcu_posix_assert(local_ptr->a == 8);
a0b7f7ea	137	if (caa_unlikely(rduration))
de10a585 MD	138	loop_sleep(rduration);
de10a585 MD	139	_rcu_read_unlock();
bd252a04	140	URCU_TLS(nr_reads)++;
de10a585	141	/* QS each 1024 reads */
bd252a04	142	if (caa_unlikely((URCU_TLS(nr_reads) & ((1 << 10) - 1)) == 0))
de10a585	143	_rcu_quiescent_state();
a0b7f7ea	144	if (caa_unlikely(!test_duration_read()))
de10a585 MD	145	break;
	146	}
	147
	148	rcu_unregister_thread();
	149
bd252a04	150	*count = URCU_TLS(nr_reads);
94df6318 MD	151	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	152	"reader", urcu_get_thread_id());
de10a585 MD	153	return ((void*)1);
	154
	155	}
	156
	157	static void rcu_gc_clear_queue(unsigned long wtidx)
	158	{
	159	void **p;
	160
	161	/* Wait for Q.S and empty queue */
	162	synchronize_rcu();
	163
	164	for (p = pending_reclaims[wtidx].queue;
	165	p < pending_reclaims[wtidx].head; p++) {
	166	/* poison */
	167	if (*p)
	168	((struct test_array )p)->a = 0;
	169	free(*p);
	170	}
	171	pending_reclaims[wtidx].head = pending_reclaims[wtidx].queue;
	172	}
	173
	174	/* Using per-thread queue */
	175	static void rcu_gc_reclaim(unsigned long wtidx, void *old)
	176	{
	177	/* Queue pointer */
	178	*pending_reclaims[wtidx].head = old;
	179	pending_reclaims[wtidx].head++;
	180
a0b7f7ea	181	if (caa_likely(pending_reclaims[wtidx].head - pending_reclaims[wtidx].queue
de10a585 MD	182	< reclaim_batch))
	183	return;
	184
	185	rcu_gc_clear_queue(wtidx);
	186	}
	187
61c3fb60	188	static
de10a585 MD	189	void thr_writer(void data)
	190	{
	191	unsigned long wtidx = (unsigned long)data;
	192	#ifdef TEST_LOCAL_GC
	193	struct test_array *old = NULL;
	194	#else
	195	struct test_array new, old;
	196	#endif
	197
94df6318 MD	198	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	199	"writer", urcu_get_thread_id());
de10a585 MD	200
	201	set_affinity();
	202
9e4e7ad1	203	wait_until_go();
de10a585 MD	204
	205	for (;;) {
	206	#ifndef TEST_LOCAL_GC
	207	new = malloc(sizeof(*new));
	208	new->a = 8;
	209	old = _rcu_xchg_pointer(&test_rcu_pointer, new);
	210	#endif
a0b7f7ea	211	if (caa_unlikely(wduration))
de10a585 MD	212	loop_sleep(wduration);
de10a585 MD	213	rcu_gc_reclaim(wtidx, old);
bd252a04	214	URCU_TLS(nr_writes)++;
a0b7f7ea	215	if (caa_unlikely(!test_duration_write()))
de10a585	216	break;
a0b7f7ea	217	if (caa_unlikely(wdelay))
de10a585 MD	218	loop_sleep(wdelay);
	219	}
	220
94df6318 MD	221	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	222	"writer", urcu_get_thread_id());
bd252a04	223	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
de10a585 MD	224	return ((void*)2);
	225	}
	226
61c3fb60	227	static
70469b43	228	void show_usage(char **argv)
de10a585	229	{
06637138 MD	230	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	231	argv[0]);
	232	printf("OPTIONS:\n");
06637138	233	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	234	printf(" [-b batch] (batch reclaim)\n");
	235	printf(" [-d delay] (writer period (us))\n");
	236	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	237	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	238	printf(" [-v] (verbose output)\n");
	239	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
de10a585 MD	240	printf("\n");
	241	}
	242
	243	int main(int argc, char **argv)
	244	{
	245	int err;
	246	pthread_t tid_reader, tid_writer;
	247	void *tret;
	248	unsigned long long *count_reader;
	249	unsigned long long tot_reads = 0, tot_writes = 0;
	250	int i, a;
83e334d0	251	unsigned int i_thr;
de10a585 MD	252
de10a585 MD	253	if (argc < 4) {
70469b43	254	show_usage(argv);
de10a585 MD	255	return -1;
	256	}
	257
	258	err = sscanf(argv[1], "%u", &nr_readers);
	259	if (err != 1) {
70469b43	260	show_usage(argv);
de10a585 MD	261	return -1;
	262	}
	263
	264	err = sscanf(argv[2], "%u", &nr_writers);
	265	if (err != 1) {
70469b43	266	show_usage(argv);
de10a585 MD	267	return -1;
de10a585 MD	268	}
83e334d0	269
de10a585 MD	270	err = sscanf(argv[3], "%lu", &duration);
de10a585 MD	271	if (err != 1) {
70469b43	272	show_usage(argv);
de10a585 MD	273	return -1;
	274	}
	275
	276	for (i = 4; i < argc; i++) {
	277	if (argv[i][0] != '-')
	278	continue;
	279	switch (argv[i][1]) {
de10a585	280	case 'r':
2650042a	281	rcu_debug_yield_enable(RCU_YIELD_READ);
de10a585 MD	282	break;
de10a585 MD	283	case 'w':
2650042a	284	rcu_debug_yield_enable(RCU_YIELD_WRITE);
de10a585	285	break;
de10a585 MD	286	case 'a':
de10a585 MD	287	if (argc < i + 2) {
70469b43	288	show_usage(argv);
de10a585 MD	289	return -1;
	290	}
	291	a = atoi(argv[++i]);
	292	cpu_affinities[next_aff++] = a;
	293	use_affinity = 1;
	294	printf_verbose("Adding CPU %d affinity\n", a);
	295	break;
	296	case 'b':
	297	if (argc < i + 2) {
70469b43	298	show_usage(argv);
de10a585 MD	299	return -1;
	300	}
	301	reclaim_batch = atol(argv[++i]);
	302	break;
	303	case 'c':
	304	if (argc < i + 2) {
70469b43	305	show_usage(argv);
de10a585 MD	306	return -1;
	307	}
	308	rduration = atol(argv[++i]);
	309	break;
	310	case 'd':
	311	if (argc < i + 2) {
70469b43	312	show_usage(argv);
de10a585 MD	313	return -1;
	314	}
	315	wdelay = atol(argv[++i]);
	316	break;
	317	case 'e':
	318	if (argc < i + 2) {
70469b43	319	show_usage(argv);
de10a585 MD	320	return -1;
	321	}
	322	wduration = atol(argv[++i]);
	323	break;
	324	case 'v':
	325	verbose_mode = 1;
	326	break;
	327	}
	328	}
	329
	330	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	331	duration, nr_readers, nr_writers);
	332	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	333	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	334	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	335	"main", urcu_get_thread_id());
de10a585	336
9aa14175 MD	337	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	338	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	339	count_reader = calloc(nr_readers, sizeof(*count_reader));
	340	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	341	pending_reclaims = calloc(nr_writers, sizeof(*pending_reclaims));
83e334d0	342	if (reclaim_batch * sizeof(*pending_reclaims[0].queue)
de10a585	343	< CAA_CACHE_LINE_SIZE)
83e334d0 MJ	344	for (i_thr = 0; i_thr < nr_writers; i_thr++)
83e334d0 MJ	345	pending_reclaims[i_thr].queue = calloc(1, CAA_CACHE_LINE_SIZE);
de10a585	346	else
83e334d0 MJ	347	for (i_thr = 0; i_thr < nr_writers; i_thr++)
	348	pending_reclaims[i_thr].queue = calloc(reclaim_batch,
	349	sizeof(*pending_reclaims[i_thr].queue));
	350	for (i_thr = 0; i_thr < nr_writers; i_thr++)
	351	pending_reclaims[i_thr].head = pending_reclaims[i_thr].queue;
de10a585 MD	352
	353	next_aff = 0;
	354
83e334d0 MJ	355	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	356	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	357	&count_reader[i_thr]);
de10a585 MD	358	if (err != 0)
	359	exit(1);
	360	}
83e334d0 MJ	361	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	362	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	363	(void *)(long)i_thr);
de10a585 MD	364	if (err != 0)
	365	exit(1);
	366	}
	367
9e4e7ad1	368	test_for(duration);
de10a585	369
83e334d0 MJ	370	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	371	err = pthread_join(tid_reader[i_thr], &tret);
de10a585 MD	372	if (err != 0)
de10a585 MD	373	exit(1);
83e334d0	374	tot_reads += count_reader[i_thr];
de10a585	375	}
83e334d0 MJ	376	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	377	err = pthread_join(tid_writer[i_thr], &tret);
de10a585 MD	378	if (err != 0)
de10a585 MD	379	exit(1);
83e334d0 MJ	380	tot_writes += tot_nr_writes[i_thr];
83e334d0 MJ	381	rcu_gc_clear_queue(i_thr);
de10a585	382	}
83e334d0	383
de10a585 MD	384	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	385	tot_writes);
	386	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
	387	"nr_writers %3u "
	388	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu "
d266df35	389	"batch %ld\n",
de10a585 MD	390	argv[0], duration, nr_readers, rduration, wduration,
	391	nr_writers, wdelay, tot_reads, tot_writes,
	392	tot_reads + tot_writes, reclaim_batch);
83e334d0	393
de10a585 MD	394	free(tid_reader);
	395	free(tid_writer);
	396	free(count_reader);
	397	free(tot_nr_writes);
83e334d0 MJ	398
	399	for (i_thr = 0; i_thr < nr_writers; i_thr++)
	400	free(pending_reclaims[i_thr].queue);
de10a585 MD	401	free(pending_reclaims);
	402
	403	return 0;
	404	}