]> git.proxmox.com Git - rustc.git/blob - src/jemalloc/include/jemalloc/internal/ckh.h
Imported Upstream version 1.9.0+dfsg1
[rustc.git] / src / jemalloc / include / jemalloc / internal / ckh.h
1 /******************************************************************************/
2 #ifdef JEMALLOC_H_TYPES
3
4 typedef struct ckh_s ckh_t;
5 typedef struct ckhc_s ckhc_t;
6
7 /* Typedefs to allow easy function pointer passing. */
8 typedef void ckh_hash_t (const void *, size_t[2]);
9 typedef 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. */
27 struct ckhc_s {
28 const void *key;
29 const void *data;
30 };
31
32 struct 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 uint64_t prng_state;
44
45 /* Total number of items. */
46 size_t count;
47
48 /*
49 * Minimum and current number of hash table buckets. There are
50 * 2^LG_CKH_BUCKET_CELLS cells per bucket.
51 */
52 unsigned lg_minbuckets;
53 unsigned lg_curbuckets;
54
55 /* Hash and comparison functions. */
56 ckh_hash_t *hash;
57 ckh_keycomp_t *keycomp;
58
59 /* Hash table with 2^lg_curbuckets buckets. */
60 ckhc_t *tab;
61 };
62
63 #endif /* JEMALLOC_H_STRUCTS */
64 /******************************************************************************/
65 #ifdef JEMALLOC_H_EXTERNS
66
67 bool ckh_new(tsd_t *tsd, ckh_t *ckh, size_t minitems, ckh_hash_t *hash,
68 ckh_keycomp_t *keycomp);
69 void ckh_delete(tsd_t *tsd, ckh_t *ckh);
70 size_t ckh_count(ckh_t *ckh);
71 bool ckh_iter(ckh_t *ckh, size_t *tabind, void **key, void **data);
72 bool ckh_insert(tsd_t *tsd, ckh_t *ckh, const void *key, const void *data);
73 bool ckh_remove(tsd_t *tsd, ckh_t *ckh, const void *searchkey, void **key,
74 void **data);
75 bool ckh_search(ckh_t *ckh, const void *searchkey, void **key, void **data);
76 void ckh_string_hash(const void *key, size_t r_hash[2]);
77 bool ckh_string_keycomp(const void *k1, const void *k2);
78 void ckh_pointer_hash(const void *key, size_t r_hash[2]);
79 bool ckh_pointer_keycomp(const void *k1, const void *k2);
80
81 #endif /* JEMALLOC_H_EXTERNS */
82 /******************************************************************************/
83 #ifdef JEMALLOC_H_INLINES
84
85 #endif /* JEMALLOC_H_INLINES */
86 /******************************************************************************/