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; | |
10 | unsigned long hash; | |
11 | unsigned long reverse_hash; | |
12 | unsigned int dummy; | |
13 | void *value; | |
14 | struct rcu_head head; | |
15 | }; | |
16 | ||
17 | struct rcu_ht; | |
ab7d5fc6 | 18 | |
5e28c532 MD |
19 | /* |
20 | * Caution ! | |
abc490a1 | 21 | * Ensure reader and writer threads are registered as urcu readers. |
5e28c532 MD |
22 | */ |
23 | ||
abc490a1 MD |
24 | typedef unsigned long (*ht_hash_fct)(void *hashseed, void *key); |
25 | ||
26 | static inline | |
27 | void ht_node_init(struct rcu_ht_node *node, void *key, void *value) | |
28 | { | |
29 | node->key = key; | |
30 | node->value = value; | |
31 | node->dummy = 0; | |
32 | } | |
674f7a69 MD |
33 | |
34 | /* | |
35 | * init_size must be power of two. | |
36 | */ | |
abc490a1 MD |
37 | struct rcu_ht *ht_new(ht_hash_fct hash_fct, |
38 | void *hashseed, | |
39 | unsigned long init_size, | |
40 | void (*ht_call_rcu)(struct rcu_head *head, | |
41 | void (*func)(struct rcu_head *head))); | |
ab7d5fc6 | 42 | |
5e28c532 | 43 | int ht_destroy(struct rcu_ht *ht); |
ab7d5fc6 | 44 | |
abc490a1 MD |
45 | /* Call with rcu_read_lock held. */ |
46 | struct rcu_ht_node *ht_lookup(struct rcu_ht *ht, void *key); | |
ab7d5fc6 | 47 | |
abc490a1 MD |
48 | /* Call with rcu_read_lock held. */ |
49 | int ht_add(struct rcu_ht *ht, struct rcu_ht_node *node); | |
ab7d5fc6 | 50 | |
abc490a1 MD |
51 | /* Call with rcu_read_lock held. */ |
52 | int ht_remove(struct rcu_ht *ht, struct rcu_ht_node *node); | |
ab7d5fc6 | 53 | |
464a1ec9 MD |
54 | void ht_resize(struct rcu_ht *ht, int growth); |
55 | ||
a42cc659 | 56 | #endif /* _URCU_RCULFHASH_H */ |