[lttng-tools.git] / src / common / hashtable / hashtable.h

/*
 * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#ifndef _LTT_HT_H
#define _LTT_HT_H

#include <urcu.h>
#include <stdint.h>

#include <common/macros.h>
#include <urcu/rculfhash.h>

#ifdef __cplusplus
extern "C" {
#endif

extern unsigned long lttng_ht_seed;

typedef unsigned long (*hash_fct_type)(const void *_key, unsigned long seed);
typedef cds_lfht_match_fct hash_match_fct;

enum lttng_ht_type {
	LTTNG_HT_TYPE_STRING,
	LTTNG_HT_TYPE_ULONG,
	LTTNG_HT_TYPE_U64,
	LTTNG_HT_TYPE_TWO_U64,
};

struct lttng_ht {
	struct cds_lfht *ht;
	cds_lfht_match_fct match_fct;
	hash_fct_type hash_fct;
};

struct lttng_ht_iter {
	struct cds_lfht_iter iter;
};

struct lttng_ht_node_str {
	char *key;
	struct cds_lfht_node node;
	struct rcu_head head;
};

struct lttng_ht_node_ulong {
	unsigned long key;
	struct cds_lfht_node node;
	struct rcu_head head;
};

struct lttng_ht_node_u64 {
	uint64_t key;
	struct cds_lfht_node node;
	struct rcu_head head;
};

struct lttng_ht_two_u64 {
	uint64_t key1;
	uint64_t key2;
};

struct lttng_ht_node_two_u64 {
	struct lttng_ht_two_u64 key;
	struct cds_lfht_node node;
	struct rcu_head head;
};

/* Hashtable new and destroy */
struct lttng_ht *lttng_ht_new(unsigned long size, int type);
void lttng_ht_destroy(struct lttng_ht *ht);

/* Specialized node init and free functions */
void lttng_ht_node_init_str(struct lttng_ht_node_str *node, char *key);
void lttng_ht_node_init_ulong(struct lttng_ht_node_ulong *node,
		unsigned long key);
void lttng_ht_node_init_u64(struct lttng_ht_node_u64 *node,
		uint64_t key);
void lttng_ht_node_init_two_u64(struct lttng_ht_node_two_u64 *node,
		uint64_t key1, uint64_t key2);
void lttng_ht_node_free_str(struct lttng_ht_node_str *node);
void lttng_ht_node_free_ulong(struct lttng_ht_node_ulong *node);
void lttng_ht_node_free_u64(struct lttng_ht_node_u64 *node);
void lttng_ht_node_free_two_u64(struct lttng_ht_node_two_u64 *node);

void lttng_ht_lookup(struct lttng_ht *ht, const void *key,
		struct lttng_ht_iter *iter);

/* Specialized add unique functions */
void lttng_ht_add_unique_str(struct lttng_ht *ht,
		struct lttng_ht_node_str *node);
void lttng_ht_add_unique_ulong(struct lttng_ht *ht,
		struct lttng_ht_node_ulong *node);
void lttng_ht_add_unique_u64(struct lttng_ht *ht,
		struct lttng_ht_node_u64 *node);
void lttng_ht_add_unique_two_u64(struct lttng_ht *ht,
		struct lttng_ht_node_two_u64 *node);
struct lttng_ht_node_ulong *lttng_ht_add_replace_ulong(
		struct lttng_ht *ht, struct lttng_ht_node_ulong *node);
struct lttng_ht_node_u64 *lttng_ht_add_replace_u64(
		struct lttng_ht *ht, struct lttng_ht_node_u64 *node);
void lttng_ht_add_str(struct lttng_ht *ht,
		struct lttng_ht_node_str *node);
void lttng_ht_add_ulong(struct lttng_ht *ht,
		struct lttng_ht_node_ulong *node);
void lttng_ht_add_u64(struct lttng_ht *ht,
		struct lttng_ht_node_u64 *node);

int lttng_ht_del(struct lttng_ht *ht, struct lttng_ht_iter *iter);

void lttng_ht_get_first(struct lttng_ht *ht,
		struct lttng_ht_iter *iter);
void lttng_ht_get_next(struct lttng_ht *ht, struct lttng_ht_iter *iter);

unsigned long lttng_ht_get_count(struct lttng_ht *ht);

struct lttng_ht_node_str *lttng_ht_iter_get_node_str(
		struct lttng_ht_iter *iter);
struct lttng_ht_node_ulong *lttng_ht_iter_get_node_ulong(
		struct lttng_ht_iter *iter);
struct lttng_ht_node_u64 *lttng_ht_iter_get_node_u64(
		struct lttng_ht_iter *iter);
struct lttng_ht_node_two_u64 *lttng_ht_iter_get_node_two_u64(
		struct lttng_ht_iter *iter);

#ifdef __cplusplus
}
#endif

#endif /* _LTT_HT_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
	3	*
	4	* SPDX-License-Identifier: GPL-2.0-only
	5	*
	6	*/
	7
	8	#ifndef _LTT_HT_H
	9	#define _LTT_HT_H
	10
	11	#include <urcu.h>
	12	#include <stdint.h>
	13
	14	#include <common/macros.h>
	15	#include <urcu/rculfhash.h>
	16
	17	#ifdef __cplusplus
	18	extern "C" {
	19	#endif
	20
	21	extern unsigned long lttng_ht_seed;
	22
	23	typedef unsigned long (hash_fct_type)(const void _key, unsigned long seed);
	24	typedef cds_lfht_match_fct hash_match_fct;
	25
	26	enum lttng_ht_type {
	27	LTTNG_HT_TYPE_STRING,
	28	LTTNG_HT_TYPE_ULONG,
	29	LTTNG_HT_TYPE_U64,
	30	LTTNG_HT_TYPE_TWO_U64,
	31	};
	32
	33	struct lttng_ht {
	34	struct cds_lfht *ht;
	35	cds_lfht_match_fct match_fct;
	36	hash_fct_type hash_fct;
	37	};
	38
	39	struct lttng_ht_iter {
	40	struct cds_lfht_iter iter;
	41	};
	42
	43	struct lttng_ht_node_str {
	44	char *key;
	45	struct cds_lfht_node node;
	46	struct rcu_head head;
	47	};
	48
	49	struct lttng_ht_node_ulong {
	50	unsigned long key;
	51	struct cds_lfht_node node;
	52	struct rcu_head head;
	53	};
	54
	55	struct lttng_ht_node_u64 {
	56	uint64_t key;
	57	struct cds_lfht_node node;
	58	struct rcu_head head;
	59	};
	60
	61	struct lttng_ht_two_u64 {
	62	uint64_t key1;
	63	uint64_t key2;
	64	};
	65
	66	struct lttng_ht_node_two_u64 {
	67	struct lttng_ht_two_u64 key;
	68	struct cds_lfht_node node;
	69	struct rcu_head head;
	70	};
	71
	72	/* Hashtable new and destroy */
	73	struct lttng_ht *lttng_ht_new(unsigned long size, int type);
	74	void lttng_ht_destroy(struct lttng_ht *ht);
	75
	76	/* Specialized node init and free functions */
	77	void lttng_ht_node_init_str(struct lttng_ht_node_str node, char key);
	78	void lttng_ht_node_init_ulong(struct lttng_ht_node_ulong *node,
	79	unsigned long key);
	80	void lttng_ht_node_init_u64(struct lttng_ht_node_u64 *node,
	81	uint64_t key);
	82	void lttng_ht_node_init_two_u64(struct lttng_ht_node_two_u64 *node,
	83	uint64_t key1, uint64_t key2);
	84	void lttng_ht_node_free_str(struct lttng_ht_node_str *node);
	85	void lttng_ht_node_free_ulong(struct lttng_ht_node_ulong *node);
	86	void lttng_ht_node_free_u64(struct lttng_ht_node_u64 *node);
	87	void lttng_ht_node_free_two_u64(struct lttng_ht_node_two_u64 *node);
	88
	89	void lttng_ht_lookup(struct lttng_ht ht, const void key,
	90	struct lttng_ht_iter *iter);
	91
	92	/* Specialized add unique functions */
	93	void lttng_ht_add_unique_str(struct lttng_ht *ht,
	94	struct lttng_ht_node_str *node);
	95	void lttng_ht_add_unique_ulong(struct lttng_ht *ht,
	96	struct lttng_ht_node_ulong *node);
	97	void lttng_ht_add_unique_u64(struct lttng_ht *ht,
	98	struct lttng_ht_node_u64 *node);
	99	void lttng_ht_add_unique_two_u64(struct lttng_ht *ht,
	100	struct lttng_ht_node_two_u64 *node);
	101	struct lttng_ht_node_ulong *lttng_ht_add_replace_ulong(
	102	struct lttng_ht ht, struct lttng_ht_node_ulong node);
	103	struct lttng_ht_node_u64 *lttng_ht_add_replace_u64(
	104	struct lttng_ht ht, struct lttng_ht_node_u64 node);
	105	void lttng_ht_add_str(struct lttng_ht *ht,
	106	struct lttng_ht_node_str *node);
	107	void lttng_ht_add_ulong(struct lttng_ht *ht,
	108	struct lttng_ht_node_ulong *node);
	109	void lttng_ht_add_u64(struct lttng_ht *ht,
	110	struct lttng_ht_node_u64 *node);
	111
	112	int lttng_ht_del(struct lttng_ht ht, struct lttng_ht_iter iter);
	113
	114	void lttng_ht_get_first(struct lttng_ht *ht,
	115	struct lttng_ht_iter *iter);
	116	void lttng_ht_get_next(struct lttng_ht ht, struct lttng_ht_iter iter);
	117
	118	unsigned long lttng_ht_get_count(struct lttng_ht *ht);
	119
	120	struct lttng_ht_node_str *lttng_ht_iter_get_node_str(
	121	struct lttng_ht_iter *iter);
	122	struct lttng_ht_node_ulong *lttng_ht_iter_get_node_ulong(
	123	struct lttng_ht_iter *iter);
	124	struct lttng_ht_node_u64 *lttng_ht_iter_get_node_u64(
	125	struct lttng_ht_iter *iter);
	126	struct lttng_ht_node_two_u64 *lttng_ht_iter_get_node_two_u64(
	127	struct lttng_ht_iter *iter);
	128
	129	#ifdef __cplusplus
	130	}
	131	#endif
	132
	133	#endif /* _LTT_HT_H */