[urcu.git] / tests / test_urcu_hash.h

#ifndef _TEST_URCU_HASH_H
#define _TEST_URCU_HASH_H

/*
 * test_urcu_hash.h
 *
 * Userspace RCU library - test program
 *
 * Copyright 2009-2012 - 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.
 */

#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 <sched.h>
#include <errno.h>
#include <signal.h>

#include <urcu/tls-compat.h>

#ifdef __linux__
#include <syscall.h>
#endif

#define DEFAULT_HASH_SIZE	32
#define DEFAULT_MIN_ALLOC_SIZE	1
#define DEFAULT_RAND_POOL	1000000

/*
 * Note: the hash seed should be a random value for hash tables
 * targeting production environments to provide protection against
 * denial of service attacks. We keep it a static value within this test
 * program to compare identical benchmark runs.
 */
#define TEST_HASH_SEED	0x42UL

/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
#define CACHE_LINE_SIZE 4096

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

#ifdef POISON_FREE
#define poison_free(ptr)				\
	do {						\
		memset(ptr, 0x42, sizeof(*(ptr)));	\
		free(ptr);				\
	} while (0)
#else
#define poison_free(ptr)	free(ptr)
#endif


#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-qsbr.h>
#include <urcu/rculfhash.h>
#include <urcu-call-rcu.h>

struct wr_count {
	unsigned long update_ops;
	unsigned long add;
	unsigned long add_exist;
	unsigned long remove;
};

extern DECLARE_URCU_TLS(unsigned int, rand_lookup);
extern DECLARE_URCU_TLS(unsigned long, nr_add);
extern DECLARE_URCU_TLS(unsigned long, nr_addexist);
extern DECLARE_URCU_TLS(unsigned long, nr_del);
extern DECLARE_URCU_TLS(unsigned long, nr_delnoent);
extern DECLARE_URCU_TLS(unsigned long, lookup_fail);
extern DECLARE_URCU_TLS(unsigned long, lookup_ok);

extern struct cds_lfht *test_ht;

struct test_data {
	int a;
	int b;
};

struct lfht_test_node {
	struct cds_lfht_node node;
	void *key;
	unsigned int key_len;
	/* cache-cold for iteration */
	struct rcu_head head;
};

static inline struct lfht_test_node *
to_test_node(struct cds_lfht_node *node)
{
	return caa_container_of(node, struct lfht_test_node, node);
}

static inline
void lfht_test_node_init(struct lfht_test_node *node, void *key,
			size_t key_len)
{
	cds_lfht_node_init(&node->node);
	node->key = key;
	node->key_len = key_len;
}

static inline struct lfht_test_node *
cds_lfht_iter_get_test_node(struct cds_lfht_iter *iter)
{
	return to_test_node(cds_lfht_iter_get_node(iter));
}

extern volatile int test_go, test_stop;

extern unsigned long wdelay;

extern unsigned long duration;

/* read-side C.S. duration, in loops */
extern unsigned long rduration;

extern unsigned long init_hash_size;
extern unsigned long min_hash_alloc_size;
extern unsigned long max_hash_buckets_size;
extern unsigned long init_populate;
extern int opt_auto_resize;
extern int add_only, add_unique, add_replace;
extern const struct cds_lfht_mm_type *memory_backend;

extern unsigned long init_pool_offset, lookup_pool_offset, write_pool_offset;
extern unsigned long init_pool_size,
	lookup_pool_size,
	write_pool_size;
extern int validate_lookup;

extern unsigned long nr_hash_chains;

extern int count_pipe[2];

static inline void loop_sleep(unsigned long l)
{
	while(l-- != 0)
		caa_cpu_relax();
}

extern int verbose_mode;

#define printf_verbose(fmt, args...)		\
	do {					\
		if (verbose_mode)		\
			printf(fmt, ## args);	\
	} while (0)

extern unsigned int cpu_affinities[NR_CPUS];
extern unsigned int next_aff;
extern int use_affinity;

extern pthread_mutex_t affinity_mutex;

#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

void set_affinity(void);

/*
 * returns 0 if test should end.
 */
static inline int test_duration_write(void)
{
	return !test_stop;
}

static inline int test_duration_read(void)
{
	return !test_stop;
}

extern DECLARE_URCU_TLS(unsigned long long, nr_writes);
extern DECLARE_URCU_TLS(unsigned long long, nr_reads);

extern unsigned int nr_readers;
extern unsigned int nr_writers;

void rcu_copy_mutex_lock(void);
void rcu_copy_mutex_unlock(void);

/*
 * Hash function
 * Source: http://burtleburtle.net/bob/c/lookup3.c
 * Originally Public Domain
 */

#define rot(x, k) (((x) << (k)) | ((x) >> (32 - (k))))

#define mix(a, b, c) \
do { \
	a -= c; a ^= rot(c,  4); c += b; \
	b -= a; b ^= rot(a,  6); a += c; \
	c -= b; c ^= rot(b,  8); b += a; \
	a -= c; a ^= rot(c, 16); c += b; \
	b -= a; b ^= rot(a, 19); a += c; \
	c -= b; c ^= rot(b,  4); b += a; \
} while (0)

#define final(a, b, c) \
{ \
	c ^= b; c -= rot(b, 14); \
	a ^= c; a -= rot(c, 11); \
	b ^= a; b -= rot(a, 25); \
	c ^= b; c -= rot(b, 16); \
	a ^= c; a -= rot(c,  4);\
	b ^= a; b -= rot(a, 14); \
	c ^= b; c -= rot(b, 24); \
}

static inline __attribute__((unused))
uint32_t hash_u32(
	const uint32_t *k,	/* the key, an array of uint32_t values */
	size_t length,		/* the length of the key, in uint32_ts */
	uint32_t initval)	/* the previous hash, or an arbitrary value */
{
	uint32_t a, b, c;

	/* Set up the internal state */
	a = b = c = 0xdeadbeef + (((uint32_t) length) << 2) + initval;

	/*----------------------------------------- handle most of the key */
	while (length > 3) {
		a += k[0];
		b += k[1];
		c += k[2];
		mix(a, b, c);
		length -= 3;
		k += 3;
	}

	/*----------------------------------- handle the last 3 uint32_t's */
	switch (length) {	/* all the case statements fall through */
	case 3: c += k[2];
	case 2: b += k[1];
	case 1: a += k[0];
		final(a, b, c);
	case 0:			/* case 0: nothing left to add */
		break;
	}
	/*---------------------------------------------- report the result */
	return c;
}

static inline
void hashword2(
	const uint32_t *k,	/* the key, an array of uint32_t values */
	size_t length,		/* the length of the key, in uint32_ts */
	uint32_t *pc,		/* IN: seed OUT: primary hash value */
	uint32_t *pb)		/* IN: more seed OUT: secondary hash value */
{
	uint32_t a, b, c;

	/* Set up the internal state */
	a = b = c = 0xdeadbeef + ((uint32_t) (length << 2)) + *pc;
	c += *pb;

	/*----------------------------------------- handle most of the key */
	while (length > 3) {
		a += k[0];
		b += k[1];
		c += k[2];
		mix(a, b, c);
		length -= 3;
		k += 3;
	}

	/*----------------------------------- handle the last 3 uint32_t's */
	switch (length) {	/* all the case statements fall through */
	case 3: c += k[2];
	case 2: b += k[1];
	case 1: a += k[0];
		final(a, b, c);
	case 0:			/* case 0: nothing left to add */
		break;
	}
	/*---------------------------------------------- report the result */
	*pc = c;
	*pb = b;
}

#if (CAA_BITS_PER_LONG == 32)
static inline
unsigned long test_hash_mix(const void *_key, size_t length, unsigned long seed)
{
	unsigned int key = (unsigned int) _key;

	assert(length == sizeof(unsigned int));
	return hash_u32(&key, 1, seed);
}
#else
static inline
unsigned long test_hash_mix(const void *_key, size_t length, unsigned long seed)
{
	union {
		uint64_t v64;
		uint32_t v32[2];
	} v;
	union {
		uint64_t v64;
		uint32_t v32[2];
	} key;

	assert(length == sizeof(unsigned long));
	v.v64 = (uint64_t) seed;
	key.v64 = (uint64_t) _key;
	hashword2(key.v32, 2, &v.v32[0], &v.v32[1]);
	return v.v64;
}
#endif

/*
 * Hash function with nr_hash_chains != 0 for testing purpose only!
 * Creates very long hash chains, deteriorating the hash table into a
 * few linked lists, depending on the nr_hash_chains value. The purpose
 * of this test is to check how the hash table behaves with hash chains
 * containing different values, which is a rare case in a normal hash
 * table.
 */
static inline
unsigned long test_hash(const void *_key, size_t length,
			unsigned long seed)
{
	if (nr_hash_chains == 0) {
		return test_hash_mix(_key, length, seed);
	} else {
		unsigned long v;

		assert(length == sizeof(unsigned long));
		v = (unsigned long) _key;
		return v % nr_hash_chains;
	}
}

unsigned long test_compare(const void *key1, size_t key1_len,
                           const void *key2, size_t key2_len);

static inline
int test_match(struct cds_lfht_node *node, const void *key)
{
	struct lfht_test_node *test_node = to_test_node(node);

	return !test_compare(test_node->key, test_node->key_len,
			key, sizeof(unsigned long));
}

static inline
void cds_lfht_test_lookup(struct cds_lfht *ht, void *key, size_t key_len,
		struct cds_lfht_iter *iter)
{
	assert(key_len == sizeof(unsigned long));

	cds_lfht_lookup(ht, test_hash(key, key_len, TEST_HASH_SEED),
			test_match, key, iter);
}

void free_node_cb(struct rcu_head *head);

/* rw test */
void test_hash_rw_sigusr1_handler(int signo);
void test_hash_rw_sigusr2_handler(int signo);
void *test_hash_rw_thr_reader(void *_count);
void *test_hash_rw_thr_writer(void *_count);
int test_hash_rw_populate_hash(void);

/* unique test */
void test_hash_unique_sigusr1_handler(int signo);
void test_hash_unique_sigusr2_handler(int signo);
void *test_hash_unique_thr_reader(void *_count);
void *test_hash_unique_thr_writer(void *_count);
int test_hash_unique_populate_hash(void);

#endif /* _TEST_URCU_HASH_H */
Commit	Line	Data
18ca7a5b MD	1	#ifndef _TEST_URCU_HASH_H
	2	#define _TEST_URCU_HASH_H
	3
	4	/*
	5	* test_urcu_hash.h
	6	*
	7	* Userspace RCU library - test program
	8	*
	9	* Copyright 2009-2012 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2 of the License, or
	14	* (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License along
	22	* with this program; if not, write to the Free Software Foundation, Inc.,
	23	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	24	*/
	25
	26	#include "../config.h"
	27	#include <stdio.h>
	28	#include <pthread.h>
	29	#include <stdlib.h>
	30	#include <string.h>
	31	#include <sys/types.h>
	32	#include <sys/wait.h>
	33	#include <unistd.h>
	34	#include <stdio.h>
	35	#include <assert.h>
	36	#include <sched.h>
	37	#include <errno.h>
	38	#include <signal.h>
	39
bd252a04 MD	40	#include <urcu/tls-compat.h>
bd252a04 MD	41
18ca7a5b MD	42	#ifdef __linux__
	43	#include <syscall.h>
	44	#endif
	45
	46	#define DEFAULT_HASH_SIZE 32
	47	#define DEFAULT_MIN_ALLOC_SIZE 1
	48	#define DEFAULT_RAND_POOL 1000000
	49
	50	/*
	51	* Note: the hash seed should be a random value for hash tables
	52	* targeting production environments to provide protection against
	53	* denial of service attacks. We keep it a static value within this test
	54	* program to compare identical benchmark runs.
	55	*/
	56	#define TEST_HASH_SEED 0x42UL
	57
	58	/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
	59	#define CACHE_LINE_SIZE 4096
	60
	61	/* hardcoded number of CPUs */
	62	#define NR_CPUS 16384
	63
	64	#ifdef POISON_FREE
	65	#define poison_free(ptr) \
	66	do { \
	67	memset(ptr, 0x42, sizeof(*(ptr))); \
	68	free(ptr); \
	69	} while (0)
	70	#else
	71	#define poison_free(ptr) free(ptr)
	72	#endif
	73
	74
	75
	76	#if defined(_syscall0)
	77	_syscall0(pid_t, gettid)
	78	#elif defined(__NR_gettid)
	79	static inline pid_t gettid(void)
	80	{
	81	return syscall(__NR_gettid);
	82	}
	83	#else
	84	#warning "use pid as tid"
	85	static inline pid_t gettid(void)
	86	{
	87	return getpid();
	88	}
	89	#endif
	90
	91	#ifndef DYNAMIC_LINK_TEST
	92	#define _LGPL_SOURCE
	93	#else
	94	#define debug_yield_read()
	95	#endif
	96	#include <urcu-qsbr.h>
	97	#include <urcu/rculfhash.h>
	98	#include <urcu-call-rcu.h>
	99
	100	struct wr_count {
	101	unsigned long update_ops;
	102	unsigned long add;
	103	unsigned long add_exist;
	104	unsigned long remove;
	105	};
106
bd252a04 MD	107	extern DECLARE_URCU_TLS(unsigned int, rand_lookup);
	108	extern DECLARE_URCU_TLS(unsigned long, nr_add);
	109	extern DECLARE_URCU_TLS(unsigned long, nr_addexist);
	110	extern DECLARE_URCU_TLS(unsigned long, nr_del);
	111	extern DECLARE_URCU_TLS(unsigned long, nr_delnoent);
	112	extern DECLARE_URCU_TLS(unsigned long, lookup_fail);
	113	extern DECLARE_URCU_TLS(unsigned long, lookup_ok);
18ca7a5b MD	114
	115	extern struct cds_lfht *test_ht;
	116
	117	struct test_data {
	118	int a;
	119	int b;
	120	};
	121
	122	struct lfht_test_node {
	123	struct cds_lfht_node node;
	124	void *key;
	125	unsigned int key_len;
	126	/* cache-cold for iteration */
	127	struct rcu_head head;
	128	};
	129
	130	static inline struct lfht_test_node *
	131	to_test_node(struct cds_lfht_node *node)
	132	{
	133	return caa_container_of(node, struct lfht_test_node, node);
	134	}
	135
	136	static inline
	137	void lfht_test_node_init(struct lfht_test_node node, void key,
	138	size_t key_len)
	139	{
	140	cds_lfht_node_init(&node->node);
	141	node->key = key;
	142	node->key_len = key_len;
	143	}
	144
	145	static inline struct lfht_test_node *
	146	cds_lfht_iter_get_test_node(struct cds_lfht_iter *iter)
	147	{
	148	return to_test_node(cds_lfht_iter_get_node(iter));
	149	}
	150
	151	extern volatile int test_go, test_stop;
	152
	153	extern unsigned long wdelay;
	154
	155	extern unsigned long duration;
	156
	157	/* read-side C.S. duration, in loops */
	158	extern unsigned long rduration;
	159
	160	extern unsigned long init_hash_size;
	161	extern unsigned long min_hash_alloc_size;
	162	extern unsigned long max_hash_buckets_size;
	163	extern unsigned long init_populate;
	164	extern int opt_auto_resize;
	165	extern int add_only, add_unique, add_replace;
	166	extern const struct cds_lfht_mm_type *memory_backend;
	167
	168	extern unsigned long init_pool_offset, lookup_pool_offset, write_pool_offset;
	169	extern unsigned long init_pool_size,
	170	lookup_pool_size,
	171	write_pool_size;
	172	extern int validate_lookup;
	173
495913bf MD	174	extern unsigned long nr_hash_chains;
495913bf MD	175
18ca7a5b MD	176	extern int count_pipe[2];
	177
	178	static inline void loop_sleep(unsigned long l)
	179	{
	180	while(l-- != 0)
	181	caa_cpu_relax();
	182	}
	183
	184	extern int verbose_mode;
	185
	186	#define printf_verbose(fmt, args...) \
	187	do { \
	188	if (verbose_mode) \
	189	printf(fmt, ## args); \
	190	} while (0)
	191
	192	extern unsigned int cpu_affinities[NR_CPUS];
	193	extern unsigned int next_aff;
	194	extern int use_affinity;
	195
	196	extern pthread_mutex_t affinity_mutex;
	197
	198	#ifndef HAVE_CPU_SET_T
	199	typedef unsigned long cpu_set_t;
	200	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	201	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	202	#endif
	203
	204	void set_affinity(void);
	205
18ca7a5b MD	206	/*
	207	* returns 0 if test should end.
	208	*/
	209	static inline int test_duration_write(void)
	210	{
	211	return !test_stop;
	212	}
	213
	214	static inline int test_duration_read(void)
	215	{
	216	return !test_stop;
	217	}
	218
bd252a04 MD	219	extern DECLARE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	220	extern DECLARE_URCU_TLS(unsigned long long, nr_reads);
18ca7a5b MD	221
	222	extern unsigned int nr_readers;
	223	extern unsigned int nr_writers;
	224
	225	void rcu_copy_mutex_lock(void);
	226	void rcu_copy_mutex_unlock(void);
	227
	228	/*
	229	* Hash function
	230	* Source: http://burtleburtle.net/bob/c/lookup3.c
	231	* Originally Public Domain
	232	*/
	233
	234	#define rot(x, k) (((x) << (k)) \| ((x) >> (32 - (k))))
	235
	236	#define mix(a, b, c) \
	237	do { \
	238	a -= c; a ^= rot(c, 4); c += b; \
	239	b -= a; b ^= rot(a, 6); a += c; \
	240	c -= b; c ^= rot(b, 8); b += a; \
	241	a -= c; a ^= rot(c, 16); c += b; \
	242	b -= a; b ^= rot(a, 19); a += c; \
	243	c -= b; c ^= rot(b, 4); b += a; \
	244	} while (0)
	245
	246	#define final(a, b, c) \
	247	{ \
	248	c ^= b; c -= rot(b, 14); \
	249	a ^= c; a -= rot(c, 11); \
	250	b ^= a; b -= rot(a, 25); \
	251	c ^= b; c -= rot(b, 16); \
	252	a ^= c; a -= rot(c, 4);\
	253	b ^= a; b -= rot(a, 14); \
	254	c ^= b; c -= rot(b, 24); \
	255	}
	256
	257	static inline __attribute__((unused))
	258	uint32_t hash_u32(
	259	const uint32_t k, / the key, an array of uint32_t values */
	260	size_t length, /* the length of the key, in uint32_ts */
	261	uint32_t initval) /* the previous hash, or an arbitrary value */
	262	{
	263	uint32_t a, b, c;
	264
	265	/* Set up the internal state */
	266	a = b = c = 0xdeadbeef + (((uint32_t) length) << 2) + initval;
	267
	268	/----------------------------------------- handle most of the key /
	269	while (length > 3) {
	270	a += k[0];
	271	b += k[1];
	272	c += k[2];
	273	mix(a, b, c);
	274	length -= 3;
	275	k += 3;
	276	}
	277
	278	/----------------------------------- handle the last 3 uint32_t's /
	279	switch (length) { /* all the case statements fall through */
	280	case 3: c += k[2];
	281	case 2: b += k[1];
	282	case 1: a += k[0];
	283	final(a, b, c);
	284	case 0: /* case 0: nothing left to add */
285	break;
286	}
287	/---------------------------------------------- report the result /
288	return c;
289	}
290
291	static inline
292	void hashword2(
293	const uint32_t k, / the key, an array of uint32_t values */
294	size_t length, /* the length of the key, in uint32_ts */
295	uint32_t pc, / IN: seed OUT: primary hash value */
296	uint32_t pb) / IN: more seed OUT: secondary hash value */
297	{
298	uint32_t a, b, c;
299
300	/* Set up the internal state */
301	a = b = c = 0xdeadbeef + ((uint32_t) (length << 2)) + *pc;
302	c += *pb;
303
304	/----------------------------------------- handle most of the key /
305	while (length > 3) {
306	a += k[0];
307	b += k[1];
308	c += k[2];
309	mix(a, b, c);
310	length -= 3;
311	k += 3;
312	}
313
314	/----------------------------------- handle the last 3 uint32_t's /
315	switch (length) { /* all the case statements fall through */
316	case 3: c += k[2];
317	case 2: b += k[1];
318	case 1: a += k[0];
319	final(a, b, c);
320	case 0: /* case 0: nothing left to add */
321	break;
322	}
323	/---------------------------------------------- report the result /
324	*pc = c;
325	*pb = b;
326	}
327
328	#if (CAA_BITS_PER_LONG == 32)
329	static inline
495913bf	330	unsigned long test_hash_mix(const void *_key, size_t length, unsigned long seed)
18ca7a5b MD	331	{
	332	unsigned int key = (unsigned int) _key;
	333
	334	assert(length == sizeof(unsigned int));
	335	return hash_u32(&key, 1, seed);
	336	}
	337	#else
	338	static inline
495913bf	339	unsigned long test_hash_mix(const void *_key, size_t length, unsigned long seed)
18ca7a5b MD	340	{
	341	union {
	342	uint64_t v64;
	343	uint32_t v32[2];
	344	} v;
	345	union {
	346	uint64_t v64;
	347	uint32_t v32[2];
	348	} key;
	349
	350	assert(length == sizeof(unsigned long));
	351	v.v64 = (uint64_t) seed;
	352	key.v64 = (uint64_t) _key;
	353	hashword2(key.v32, 2, &v.v32[0], &v.v32[1]);
	354	return v.v64;
	355	}
	356	#endif
	357
495913bf MD	358	/*
	359	* Hash function with nr_hash_chains != 0 for testing purpose only!
	360	* Creates very long hash chains, deteriorating the hash table into a
	361	* few linked lists, depending on the nr_hash_chains value. The purpose
	362	* of this test is to check how the hash table behaves with hash chains
	363	* containing different values, which is a rare case in a normal hash
	364	* table.
	365	*/
	366	static inline
	367	unsigned long test_hash(const void *_key, size_t length,
	368	unsigned long seed)
	369	{
	370	if (nr_hash_chains == 0) {
	371	return test_hash_mix(_key, length, seed);
	372	} else {
	373	unsigned long v;
	374
	375	assert(length == sizeof(unsigned long));
	376	v = (unsigned long) _key;
	377	return v % nr_hash_chains;
	378	}
	379	}
	380
18ca7a5b MD	381	unsigned long test_compare(const void *key1, size_t key1_len,
	382	const void *key2, size_t key2_len);
	383
	384	static inline
	385	int test_match(struct cds_lfht_node node, const void key)
	386	{
	387	struct lfht_test_node *test_node = to_test_node(node);
	388
	389	return !test_compare(test_node->key, test_node->key_len,
	390	key, sizeof(unsigned long));
	391	}
	392
	393	static inline
	394	void cds_lfht_test_lookup(struct cds_lfht ht, void key, size_t key_len,
	395	struct cds_lfht_iter *iter)
	396	{
	397	assert(key_len == sizeof(unsigned long));
	398
	399	cds_lfht_lookup(ht, test_hash(key, key_len, TEST_HASH_SEED),
	400	test_match, key, iter);
	401	}
	402
	403	void free_node_cb(struct rcu_head *head);
	404
f52c1ef7 MD	405	/* rw test */
	406	void test_hash_rw_sigusr1_handler(int signo);
	407	void test_hash_rw_sigusr2_handler(int signo);
	408	void test_hash_rw_thr_reader(void _count);
	409	void test_hash_rw_thr_writer(void _count);
	410	int test_hash_rw_populate_hash(void);
	411
20adf780 MD	412	/* unique test */
	413	void test_hash_unique_sigusr1_handler(int signo);
	414	void test_hash_unique_sigusr2_handler(int signo);
	415	void test_hash_unique_thr_reader(void _count);
	416	void test_hash_unique_thr_writer(void _count);
	417	int test_hash_unique_populate_hash(void);
	418
18ca7a5b	419	#endif /* _TEST_URCU_HASH_H */