Commit | Line | Data |
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a42cc659 MD |
1 | #ifndef _URCU_RCULFHASH_H |
2 | #define _URCU_RCULFHASH_H | |
ab7d5fc6 | 3 | |
674f7a69 | 4 | #include <stdint.h> |
abc490a1 MD |
5 | #include <urcu-call-rcu.h> |
6 | ||
7 | struct rcu_ht_node { | |
8 | struct rcu_ht_node *next; | |
9 | void *key; | |
732ad076 | 10 | size_t key_len; |
abc490a1 MD |
11 | unsigned long hash; |
12 | unsigned long reverse_hash; | |
13 | unsigned int dummy; | |
14 | void *value; | |
15 | struct rcu_head head; | |
16 | }; | |
17 | ||
18 | struct rcu_ht; | |
ab7d5fc6 | 19 | |
5e28c532 MD |
20 | /* |
21 | * Caution ! | |
abc490a1 | 22 | * Ensure reader and writer threads are registered as urcu readers. |
5e28c532 MD |
23 | */ |
24 | ||
732ad076 MD |
25 | typedef unsigned long (*ht_hash_fct)(void *key, size_t length, |
26 | unsigned long seed); | |
27 | typedef unsigned long (*ht_compare_fct)(void *key1, size_t key1_len, | |
28 | void *key2, size_t key2_len); | |
abc490a1 MD |
29 | |
30 | static inline | |
732ad076 MD |
31 | void ht_node_init(struct rcu_ht_node *node, void *key, |
32 | size_t key_len, void *value) | |
abc490a1 MD |
33 | { |
34 | node->key = key; | |
732ad076 | 35 | node->key_len = key_len; |
abc490a1 MD |
36 | node->value = value; |
37 | node->dummy = 0; | |
38 | } | |
674f7a69 MD |
39 | |
40 | /* | |
41 | * init_size must be power of two. | |
42 | */ | |
abc490a1 | 43 | struct rcu_ht *ht_new(ht_hash_fct hash_fct, |
732ad076 MD |
44 | ht_compare_fct compare_fct, |
45 | unsigned long hash_seed, | |
abc490a1 MD |
46 | unsigned long init_size, |
47 | void (*ht_call_rcu)(struct rcu_head *head, | |
48 | void (*func)(struct rcu_head *head))); | |
ab7d5fc6 | 49 | |
5e28c532 | 50 | int ht_destroy(struct rcu_ht *ht); |
ab7d5fc6 | 51 | |
abc490a1 | 52 | /* Call with rcu_read_lock held. */ |
732ad076 | 53 | struct rcu_ht_node *ht_lookup(struct rcu_ht *ht, void *key, size_t key_len); |
ab7d5fc6 | 54 | |
abc490a1 | 55 | /* Call with rcu_read_lock held. */ |
f000907d | 56 | void ht_add(struct rcu_ht *ht, struct rcu_ht_node *node); |
ab7d5fc6 | 57 | |
abc490a1 MD |
58 | /* Call with rcu_read_lock held. */ |
59 | int ht_remove(struct rcu_ht *ht, struct rcu_ht_node *node); | |
ab7d5fc6 | 60 | |
464a1ec9 MD |
61 | void ht_resize(struct rcu_ht *ht, int growth); |
62 | ||
a42cc659 | 63 | #endif /* _URCU_RCULFHASH_H */ |