projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| bec39940 DG |
1 | /* |
| 2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
| 3 | * | |
| d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License, version 2 only, | |
| 6 | * as published by the Free Software Foundation. | |
| bec39940 DG |
7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| d14d33bf | 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| bec39940 DG |
11 | * more details. |
| 12 | * | |
| d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| bec39940 DG |
16 | */ |
| 17 | ||
| 18 | #ifndef _LTT_HT_H | |
| 19 | #define _LTT_HT_H | |
| 20 | ||
| 21 | #include <urcu.h> | |
| 10a8a223 DG |
22 | |
| 23 | #include "rculfhash.h" | |
| 24 | #include "rculfhash-internal.h" | |
| bec39940 | 25 | |
| b6314938 DG |
26 | extern unsigned long lttng_ht_seed; |
| 27 | ||
| bec39940 DG |
28 | typedef unsigned long (*hash_fct)(void *_key, unsigned long seed); |
| 29 | typedef cds_lfht_match_fct hash_match_fct; | |
| 30 | ||
| 31 | enum lttng_ht_type { | |
| 32 | LTTNG_HT_TYPE_STRING, | |
| 33 | LTTNG_HT_TYPE_ULONG, | |
| 34 | }; | |
| 35 | ||
| 36 | struct lttng_ht { | |
| 37 | struct cds_lfht *ht; | |
| 38 | cds_lfht_match_fct match_fct; | |
| 39 | hash_fct hash_fct; | |
| 40 | }; | |
| 41 | ||
| 42 | struct lttng_ht_iter { | |
| 43 | struct cds_lfht_iter iter; | |
| 44 | }; | |
| 45 | ||
| 46 | struct lttng_ht_node_str { | |
| 47 | char *key; | |
| 48 | struct cds_lfht_node node; | |
| 49 | struct rcu_head head; | |
| 50 | }; | |
| 51 | ||
| 52 | struct lttng_ht_node_ulong { | |
| 53 | unsigned long key; | |
| 54 | struct cds_lfht_node node; | |
| 55 | struct rcu_head head; | |
| 56 | }; | |
| 57 | ||
| 58 | /* Hashtable new and destroy */ | |
| 59 | extern struct lttng_ht *lttng_ht_new(unsigned long size, int type); | |
| 60 | extern void lttng_ht_destroy(struct lttng_ht *ht); | |
| 61 | ||
| 62 | /* Specialized node init and free functions */ | |
| 63 | extern void lttng_ht_node_init_str(struct lttng_ht_node_str *node, char *key); | |
| 64 | extern void lttng_ht_node_init_ulong(struct lttng_ht_node_ulong *node, | |
| 65 | unsigned long key); | |
| 66 | extern void lttng_ht_node_free_str(struct lttng_ht_node_str *node); | |
| 67 | extern void lttng_ht_node_free_ulong(struct lttng_ht_node_ulong *node); | |
| 68 | ||
| 69 | extern void lttng_ht_lookup(struct lttng_ht *ht, void *key, | |
| 70 | struct lttng_ht_iter *iter); | |
| 71 | ||
| 72 | /* Specialized add unique functions */ | |
| 73 | extern void lttng_ht_add_unique_str(struct lttng_ht *ht, | |
| 74 | struct lttng_ht_node_str *node); | |
| 75 | extern void lttng_ht_add_unique_ulong(struct lttng_ht *ht, | |
| 76 | struct lttng_ht_node_ulong *node); | |
| 852d0037 DG |
77 | extern struct lttng_ht_node_ulong *lttng_ht_add_replace_ulong( |
| 78 | struct lttng_ht *ht, struct lttng_ht_node_ulong *node); | |
| aefea3b7 DG |
79 | extern void lttng_ht_add_ulong(struct lttng_ht *ht, |
| 80 | struct lttng_ht_node_ulong *node); | |
| bec39940 DG |
81 | |
| 82 | extern int lttng_ht_del(struct lttng_ht *ht, struct lttng_ht_iter *iter); | |
| 83 | ||
| 84 | extern void lttng_ht_get_first(struct lttng_ht *ht, | |
| 85 | struct lttng_ht_iter *iter); | |
| 86 | extern void lttng_ht_get_next(struct lttng_ht *ht, struct lttng_ht_iter *iter); | |
| 87 | ||
| 88 | extern unsigned long lttng_ht_get_count(struct lttng_ht *ht); | |
| 89 | ||
| 90 | extern struct lttng_ht_node_str *lttng_ht_iter_get_node_str( | |
| 91 | struct lttng_ht_iter *iter); | |
| 92 | extern struct lttng_ht_node_ulong *lttng_ht_iter_get_node_ulong( | |
| 93 | struct lttng_ht_iter *iter); | |
| 94 | ||
| 95 | #endif /* _LTT_HT_H */ |