1/******************************************************************************/
2#ifdef JEMALLOC_H_TYPES
3
4typedef struct ckh_s ckh_t;
5typedef struct ckhc_s ckhc_t;
6
7/* Typedefs to allow easy function pointer passing. */
8typedef void ckh_hash_t (const void *, size_t[2]);
9typedef bool ckh_keycomp_t (const void *, const void *);
10
11/* Maintain counters used to get an idea of performance. */
12/* #define	CKH_COUNT */
13/* Print counter values in ckh_delete() (requires CKH_COUNT). */
14/* #define	CKH_VERBOSE */
15
16/*
17 * There are 2^LG_CKH_BUCKET_CELLS cells in each hash table bucket.  Try to fit
18 * one bucket per L1 cache line.
19 */
20#define	LG_CKH_BUCKET_CELLS (LG_CACHELINE - LG_SIZEOF_PTR - 1)
21
22#endif /* JEMALLOC_H_TYPES */
23/******************************************************************************/
24#ifdef JEMALLOC_H_STRUCTS
25
26/* Hash table cell. */
27struct ckhc_s {
28	const void	*key;
29	const void	*data;
30};
31
32struct ckh_s {
33#ifdef CKH_COUNT
34	/* Counters used to get an idea of performance. */
35	uint64_t	ngrows;
36	uint64_t	nshrinks;
37	uint64_t	nshrinkfails;
38	uint64_t	ninserts;
39	uint64_t	nrelocs;
40#endif
41
42	/* Used for pseudo-random number generation. */
43#define	CKH_A		1103515241
44#define	CKH_C		12347
45	uint32_t	prng_state;
46
47	/* Total number of items. */
48	size_t		count;
49
50	/*
51	 * Minimum and current number of hash table buckets.  There are
52	 * 2^LG_CKH_BUCKET_CELLS cells per bucket.
53	 */
54	unsigned	lg_minbuckets;
55	unsigned	lg_curbuckets;
56
57	/* Hash and comparison functions. */
58	ckh_hash_t	*hash;
59	ckh_keycomp_t	*keycomp;
60
61	/* Hash table with 2^lg_curbuckets buckets. */
62	ckhc_t		*tab;
63};
64
65#endif /* JEMALLOC_H_STRUCTS */
66/******************************************************************************/
67#ifdef JEMALLOC_H_EXTERNS
68
69bool	ckh_new(ckh_t *ckh, size_t minitems, ckh_hash_t *hash,
70    ckh_keycomp_t *keycomp);
71void	ckh_delete(ckh_t *ckh);
72size_t	ckh_count(ckh_t *ckh);
73bool	ckh_iter(ckh_t *ckh, size_t *tabind, void **key, void **data);
74bool	ckh_insert(ckh_t *ckh, const void *key, const void *data);
75bool	ckh_remove(ckh_t *ckh, const void *searchkey, void **key,
76    void **data);
77bool	ckh_search(ckh_t *ckh, const void *seachkey, void **key, void **data);
78void	ckh_string_hash(const void *key, size_t r_hash[2]);
79bool	ckh_string_keycomp(const void *k1, const void *k2);
80void	ckh_pointer_hash(const void *key, size_t r_hash[2]);
81bool	ckh_pointer_keycomp(const void *k1, const void *k2);
82
83#endif /* JEMALLOC_H_EXTERNS */
84/******************************************************************************/
85#ifdef JEMALLOC_H_INLINES
86
87#endif /* JEMALLOC_H_INLINES */
88/******************************************************************************/
89