rculfhash: do not include urcu-call-rcu.h from public API
[urcu.git] / include / urcu / rculfhash.h
CommitLineData
a42cc659
MD
1#ifndef _URCU_RCULFHASH_H
2#define _URCU_RCULFHASH_H
ab7d5fc6 3
f0c29ed7
MD
4/*
5 * urcu/rculfhash.h
6 *
7 * Userspace RCU library - Lock-Free RCU Hash Table
8 *
9 * Copyright 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
0dcf4847 10 * Copyright 2011 - Lai Jiangshan <laijs@cn.fujitsu.com>
f0c29ed7
MD
11 *
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
16 *
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
cf77d1fa
MD
25 *
26 * Include this file _after_ including your URCU flavor.
f0c29ed7
MD
27 */
28
674f7a69 29#include <stdint.h>
6bcce235 30#include <pthread.h>
6d320126 31#include <urcu/compiler.h>
7b17c13e 32#include <urcu-flavor.h>
abc490a1 33
01389791
MD
34#ifdef __cplusplus
35extern "C" {
36#endif
37
7f52427b 38/*
04db56f8 39 * cds_lfht_node: Contains the next pointers and reverse-hash
7f52427b 40 * value required for lookup and traversal of the hash table.
04db56f8 41 *
db00ccc3 42 * struct cds_lfht_node should be aligned on 8-bytes boundaries because
13f656f9
MD
43 * the three lower bits are used as flags. It is worth noting that the
44 * information contained within these three bits could be represented on
45 * two bits by re-using the same bit for REMOVAL_OWNER_FLAG and
46 * BUCKET_FLAG. This can be done if we ensure that no iterator nor
47 * updater check the BUCKET_FLAG after it detects that the REMOVED_FLAG
48 * is set. Given the minimum size of struct cds_lfht_node is 8 bytes on
49 * 32-bit architectures, we choose to go for simplicity and reserve
50 * three bits.
7f52427b 51 *
ae62aa6a
MD
52 * struct cds_lfht_node can be embedded into a structure (as a field).
53 * caa_container_of() can be used to get the structure from the struct
54 * cds_lfht_node after a lookup.
04db56f8
LJ
55 *
56 * The structure which embeds it typically holds the key (or key-value
57 * pair) of the object. The caller code is responsible for calculation
58 * of the hash value for cds_lfht APIs.
ae62aa6a 59 */
14044b37 60struct cds_lfht_node {
3f2f3714 61 struct cds_lfht_node *next; /* ptr | REMOVAL_OWNER_FLAG | BUCKET_FLAG | REMOVED_FLAG */
04db56f8 62 unsigned long reverse_hash;
db00ccc3 63} __attribute__((aligned(8)));
abc490a1 64
7f52427b 65/* cds_lfht_iter: Used to track state while traversing a hash chain. */
adc0de68
MD
66struct cds_lfht_iter {
67 struct cds_lfht_node *node, *next;
68};
69
70static inline
71struct cds_lfht_node *cds_lfht_iter_get_node(struct cds_lfht_iter *iter)
72{
73 return iter->node;
74}
75
14044b37 76struct cds_lfht;
ab7d5fc6 77
5e28c532
MD
78/*
79 * Caution !
abc490a1 80 * Ensure reader and writer threads are registered as urcu readers.
5e28c532
MD
81 */
82
996ff57c 83typedef int (*cds_lfht_match_fct)(struct cds_lfht_node *node, const void *key);
abc490a1 84
f0c29ed7 85/*
14044b37 86 * cds_lfht_node_init - initialize a hash table node
0422d92c 87 * @node: the node to initialize.
04db56f8
LJ
88 *
89 * This function is kept to be eventually used for debugging purposes
90 * (detection of memory corruption).
f0c29ed7 91 */
abc490a1 92static inline
04db56f8 93void cds_lfht_node_init(struct cds_lfht_node *node)
abc490a1 94{
abc490a1 95}
674f7a69 96
b8af5011
MD
97/*
98 * Hash table creation flags.
99 */
100enum {
101 CDS_LFHT_AUTO_RESIZE = (1U << 0),
5afadd12 102 CDS_LFHT_ACCOUNTING = (1U << 1),
b8af5011
MD
103};
104
0b6aa001
LJ
105struct cds_lfht_mm_type {
106 struct cds_lfht *(*alloc_cds_lfht)(unsigned long min_nr_alloc_buckets,
107 unsigned long max_nr_buckets);
108 void (*alloc_bucket_table)(struct cds_lfht *ht, unsigned long order);
109 void (*free_bucket_table)(struct cds_lfht *ht, unsigned long order);
110 struct cds_lfht_node *(*bucket_at)(struct cds_lfht *ht,
111 unsigned long index);
112};
113
114extern const struct cds_lfht_mm_type cds_lfht_mm_order;
308d1cb3 115extern const struct cds_lfht_mm_type cds_lfht_mm_chunk;
b0b55251 116extern const struct cds_lfht_mm_type cds_lfht_mm_mmap;
0b6aa001 117
674f7a69 118/*
7a9dcf9b 119 * _cds_lfht_new - API used by cds_lfht_new wrapper. Do not use directly.
674f7a69 120 */
b9c27904 121extern
0422d92c 122struct cds_lfht *_cds_lfht_new(unsigned long init_size,
0722081a 123 unsigned long min_nr_alloc_buckets,
747d725c 124 unsigned long max_nr_buckets,
b8af5011 125 int flags,
0b6aa001 126 const struct cds_lfht_mm_type *mm,
7b17c13e 127 const struct rcu_flavor_struct *flavor,
b7d619b0 128 pthread_attr_t *attr);
ab7d5fc6 129
7a9dcf9b
MD
130/*
131 * cds_lfht_new - allocate a hash table.
747d725c
LJ
132 * @init_size: number of buckets to allocate initially. Must be power of two.
133 * @min_nr_alloc_buckets: the minimum number of allocated buckets.
134 * (must be power of two)
135 * @max_nr_buckets: the maximum number of hash table buckets allowed.
28d5c1b5
MD
136 * (must be power of two, 0 is accepted, means
137 * "infinite")
f22dd01d
MD
138 * @flags: hash table creation flags (can be combined with bitwise or: '|').
139 * 0: no flags.
140 * CDS_LFHT_AUTO_RESIZE: automatically resize hash table.
44bbe7fa
LJ
141 * CDS_LFHT_ACCOUNTING: count the number of node addition
142 * and removal in the table
b7d619b0 143 * @attr: optional resize worker thread attributes. NULL for default.
7a9dcf9b 144 *
7a9dcf9b
MD
145 * Return NULL on error.
146 * Note: the RCU flavor must be already included before the hash table header.
b7d619b0
MD
147 *
148 * The programmer is responsible for ensuring that resize operation has a
149 * priority equal to hash table updater threads. It should be performed by
150 * specifying the appropriate priority in the pthread "attr" argument, and,
151 * for CDS_LFHT_AUTO_RESIZE, by ensuring that call_rcu worker threads also have
152 * this priority level. Having lower priority for call_rcu and resize threads
153 * does not pose any correctness issue, but the resize operations could be
154 * starved by updates, thus leading to long hash table bucket chains.
3a9c66db
MD
155 * Threads calling cds_lfht_new are NOT required to be registered RCU
156 * read-side threads. It can be called very early. (e.g. before RCU is
157 * initialized)
7a9dcf9b
MD
158 */
159static inline
0422d92c 160struct cds_lfht *cds_lfht_new(unsigned long init_size,
0722081a 161 unsigned long min_nr_alloc_buckets,
747d725c 162 unsigned long max_nr_buckets,
b7d619b0
MD
163 int flags,
164 pthread_attr_t *attr)
7a9dcf9b 165{
7b17c13e 166 return _cds_lfht_new(init_size, min_nr_alloc_buckets, max_nr_buckets,
c1888f3a 167 flags, NULL, &rcu_flavor, attr);
7a9dcf9b
MD
168}
169
f0c29ed7 170/*
14044b37 171 * cds_lfht_destroy - destroy a hash table.
b7d619b0
MD
172 * @ht: the hash table to destroy.
173 * @attr: (output) resize worker thread attributes, as received by cds_lfht_new.
174 * The caller will typically want to free this pointer if dynamically
7f52427b
MD
175 * allocated. The attr point can be NULL if the caller does not
176 * need to be informed of the value passed to cds_lfht_new().
6878c72b
MD
177 *
178 * Return 0 on success, negative error value on error.
d0ec0ed2
MD
179
180 * Prior to liburcu 0.10:
181 * - Threads calling this API need to be registered RCU read-side
182 * threads.
183 * - cds_lfht_destroy should *not* be called from a RCU read-side
184 * critical section. It should *not* be called from a call_rcu thread
185 * context neither.
186 *
187 * Starting from liburcu 0.10, rculfhash implements its own worker
188 * thread to handle resize operations, which removes RCU requirements on
189 * cds_lfht_destroy.
f0c29ed7 190 */
b9c27904 191extern
b7d619b0 192int cds_lfht_destroy(struct cds_lfht *ht, pthread_attr_t **attr);
f0c29ed7
MD
193
194/*
14044b37 195 * cds_lfht_count_nodes - count the number of nodes in the hash table.
7f52427b 196 * @ht: the hash table.
3a9c66db
MD
197 * @split_count_before: sample the node count split-counter before traversal.
198 * @count: traverse the hash table, count the number of nodes observed.
199 * @split_count_after: sample the node count split-counter after traversal.
0422d92c 200 *
f0c29ed7 201 * Call with rcu_read_lock held.
3df0c49c 202 * Threads calling this API need to be registered RCU read-side threads.
f0c29ed7 203 */
b9c27904 204extern
14044b37 205void cds_lfht_count_nodes(struct cds_lfht *ht,
7f52427b 206 long *split_count_before,
adc0de68 207 unsigned long *count,
7f52427b 208 long *split_count_after);
ab7d5fc6 209
f0c29ed7 210/*
14044b37 211 * cds_lfht_lookup - lookup a node by key.
0422d92c 212 * @ht: the hash table.
0422d92c 213 * @hash: the key hash.
6f554439
LJ
214 * @match: the key match function.
215 * @key: the current node key.
3a9c66db 216 * @iter: node, if found (output). *iter->node set to NULL if not found.
f0c29ed7 217 *
f0c29ed7 218 * Call with rcu_read_lock held.
3df0c49c 219 * Threads calling this API need to be registered RCU read-side threads.
7b783f81 220 * This function acts as a rcu_dereference() to read the node pointer.
f0c29ed7 221 */
b9c27904 222extern
6f554439 223void cds_lfht_lookup(struct cds_lfht *ht, unsigned long hash,
996ff57c 224 cds_lfht_match_fct match, const void *key,
6f554439 225 struct cds_lfht_iter *iter);
ab7d5fc6 226
f0c29ed7 227/*
3a9c66db 228 * cds_lfht_next_duplicate - get the next item with same key, after iterator.
0422d92c
MD
229 * @ht: the hash table.
230 * @match: the key match function.
04db56f8 231 * @key: the current node key.
3a9c66db
MD
232 * @iter: input: current iterator.
233 * output: node, if found. *iter->node set to NULL if not found.
f0c29ed7 234 *
3a9c66db
MD
235 * Uses an iterator initialized by a lookup or traversal. Important: the
236 * iterator _needs_ to be initialized before calling
237 * cds_lfht_next_duplicate.
adc0de68
MD
238 * Sets *iter-node to the following node with same key.
239 * Sets *iter->node to NULL if no following node exists with same key.
240 * RCU read-side lock must be held across cds_lfht_lookup and
241 * cds_lfht_next calls, and also between cds_lfht_next calls using the
242 * node returned by a previous cds_lfht_next.
243 * Call with rcu_read_lock held.
3df0c49c 244 * Threads calling this API need to be registered RCU read-side threads.
7b783f81 245 * This function acts as a rcu_dereference() to read the node pointer.
f0c29ed7 246 */
b9c27904 247extern
0422d92c 248void cds_lfht_next_duplicate(struct cds_lfht *ht,
996ff57c 249 cds_lfht_match_fct match, const void *key,
04db56f8 250 struct cds_lfht_iter *iter);
4e9b9fbf
MD
251
252/*
253 * cds_lfht_first - get the first node in the table.
0422d92c
MD
254 * @ht: the hash table.
255 * @iter: First node, if exists (output). *iter->node set to NULL if not found.
4e9b9fbf
MD
256 *
257 * Output in "*iter". *iter->node set to NULL if table is empty.
258 * Call with rcu_read_lock held.
3df0c49c 259 * Threads calling this API need to be registered RCU read-side threads.
7b783f81 260 * This function acts as a rcu_dereference() to read the node pointer.
4e9b9fbf 261 */
b9c27904 262extern
4e9b9fbf
MD
263void cds_lfht_first(struct cds_lfht *ht, struct cds_lfht_iter *iter);
264
265/*
266 * cds_lfht_next - get the next node in the table.
0422d92c 267 * @ht: the hash table.
3a9c66db
MD
268 * @iter: input: current iterator.
269 * output: next node, if exists. *iter->node set to NULL if not found.
4e9b9fbf
MD
270 *
271 * Input/Output in "*iter". *iter->node set to NULL if *iter was
272 * pointing to the last table node.
273 * Call with rcu_read_lock held.
3df0c49c 274 * Threads calling this API need to be registered RCU read-side threads.
7b783f81 275 * This function acts as a rcu_dereference() to read the node pointer.
4e9b9fbf 276 */
b9c27904 277extern
4e9b9fbf 278void cds_lfht_next(struct cds_lfht *ht, struct cds_lfht_iter *iter);
ab7d5fc6 279
18117871 280/*
14044b37 281 * cds_lfht_add - add a node to the hash table.
0422d92c
MD
282 * @ht: the hash table.
283 * @hash: the key hash.
284 * @node: the node to add.
f0c29ed7 285 *
48ed1c18 286 * This function supports adding redundant keys into the table.
3df0c49c
MD
287 * Call with rcu_read_lock held.
288 * Threads calling this API need to be registered RCU read-side threads.
7b783f81
MD
289 * This function issues a full memory barrier before and after its
290 * atomic commit.
f0c29ed7 291 */
b9c27904 292extern
0422d92c
MD
293void cds_lfht_add(struct cds_lfht *ht, unsigned long hash,
294 struct cds_lfht_node *node);
f0c29ed7
MD
295
296/*
14044b37 297 * cds_lfht_add_unique - add a node to hash table, if key is not present.
0422d92c 298 * @ht: the hash table.
6f554439 299 * @hash: the node's hash.
0422d92c 300 * @match: the key match function.
04db56f8 301 * @key: the node's key.
0422d92c 302 * @node: the node to try adding.
f0c29ed7 303 *
6878c72b 304 * Return the node added upon success.
860d07e8
MD
305 * Return the unique node already present upon failure. If
306 * cds_lfht_add_unique fails, the node passed as parameter should be
3a9c66db 307 * freed by the caller. In this case, the caller does NOT need to wait
50024344 308 * for a grace period before freeing or re-using the node.
f0c29ed7 309 * Call with rcu_read_lock held.
3df0c49c 310 * Threads calling this API need to be registered RCU read-side threads.
48ed1c18
MD
311 *
312 * The semantic of this function is that if only this function is used
313 * to add keys into the table, no duplicated keys should ever be
314 * observable in the table. The same guarantee apply for combination of
9357c415 315 * add_unique and add_replace (see below).
7b783f81
MD
316 *
317 * Upon success, this function issues a full memory barrier before and
318 * after its atomic commit. Upon failure, this function acts like a
319 * simple lookup operation: it acts as a rcu_dereference() to read the
320 * node pointer. The failure case does not guarantee any other memory
321 * barrier.
18117871 322 */
b9c27904 323extern
adc0de68 324struct cds_lfht_node *cds_lfht_add_unique(struct cds_lfht *ht,
6f554439 325 unsigned long hash,
0422d92c 326 cds_lfht_match_fct match,
996ff57c 327 const void *key,
adc0de68 328 struct cds_lfht_node *node);
3eca1b8c 329
48ed1c18 330/*
9357c415 331 * cds_lfht_add_replace - replace or add a node within hash table.
0422d92c 332 * @ht: the hash table.
6f554439 333 * @hash: the node's hash.
0422d92c 334 * @match: the key match function.
04db56f8 335 * @key: the node's key.
0422d92c 336 * @node: the node to add.
48ed1c18
MD
337 *
338 * Return the node replaced upon success. If no node matching the key
339 * was present, return NULL, which also means the operation succeeded.
340 * This replacement operation should never fail.
341 * Call with rcu_read_lock held.
3df0c49c 342 * Threads calling this API need to be registered RCU read-side threads.
48ed1c18 343 * After successful replacement, a grace period must be waited for before
50024344 344 * freeing or re-using the memory reserved for the returned node.
48ed1c18 345 *
3a9c66db
MD
346 * The semantic of replacement vs lookups and traversals is the
347 * following: if lookups and traversals are performed between a key
348 * unique insertion and its removal, we guarantee that the lookups and
349 * traversals will always find exactly one instance of the key if it is
350 * replaced concurrently with the lookups.
48ed1c18
MD
351 *
352 * Providing this semantic allows us to ensure that replacement-only
353 * schemes will never generate duplicated keys. It also allows us to
9357c415 354 * guarantee that a combination of add_replace and add_unique updates
48ed1c18 355 * will never generate duplicated keys.
7b783f81
MD
356 *
357 * This function issues a full memory barrier before and after its
358 * atomic commit.
48ed1c18 359 */
b9c27904 360extern
9357c415 361struct cds_lfht_node *cds_lfht_add_replace(struct cds_lfht *ht,
6f554439 362 unsigned long hash,
0422d92c 363 cds_lfht_match_fct match,
996ff57c 364 const void *key,
adc0de68 365 struct cds_lfht_node *node);
48ed1c18 366
f0c29ed7 367/*
929ad508 368 * cds_lfht_replace - replace a node pointed to by iter within hash table.
0422d92c
MD
369 * @ht: the hash table.
370 * @old_iter: the iterator position of the node to replace.
2e79c445
MD
371 * @hash: the node's hash.
372 * @match: the key match function.
373 * @key: the node's key.
374 * @new_node: the new node to use as replacement.
f0c29ed7 375 *
9357c415 376 * Return 0 if replacement is successful, negative value otherwise.
2e79c445
MD
377 * Replacing a NULL old node or an already removed node will fail with
378 * -ENOENT.
379 * If the hash or value of the node to replace and the new node differ,
380 * this function returns -EINVAL without proceeding to the replacement.
9357c415
MD
381 * Old node can be looked up with cds_lfht_lookup and cds_lfht_next.
382 * RCU read-side lock must be held between lookup and replacement.
383 * Call with rcu_read_lock held.
3df0c49c 384 * Threads calling this API need to be registered RCU read-side threads.
9357c415 385 * After successful replacement, a grace period must be waited for before
50024344
MD
386 * freeing or re-using the memory reserved for the old node (which can
387 * be accessed with cds_lfht_iter_get_node).
9357c415 388 *
3a9c66db
MD
389 * The semantic of replacement vs lookups is the same as
390 * cds_lfht_add_replace().
7b783f81
MD
391 *
392 * Upon success, this function issues a full memory barrier before and
393 * after its atomic commit. Upon failure, this function does not issue
394 * any memory barrier.
9357c415 395 */
b9c27904 396extern
2e79c445
MD
397int cds_lfht_replace(struct cds_lfht *ht,
398 struct cds_lfht_iter *old_iter,
399 unsigned long hash,
400 cds_lfht_match_fct match,
401 const void *key,
9357c415
MD
402 struct cds_lfht_node *new_node);
403
404/*
405 * cds_lfht_del - remove node pointed to by iterator from hash table.
0422d92c 406 * @ht: the hash table.
bc8c3c74 407 * @node: the node to delete.
9357c415
MD
408 *
409 * Return 0 if the node is successfully removed, negative value
410 * otherwise.
bc8c3c74 411 * Deleting a NULL node or an already removed node will fail with a
9357c415 412 * negative value.
bc8c3c74
MD
413 * Node can be looked up with cds_lfht_lookup and cds_lfht_next,
414 * followed by use of cds_lfht_iter_get_node.
9357c415 415 * RCU read-side lock must be held between lookup and removal.
f0c29ed7 416 * Call with rcu_read_lock held.
3df0c49c 417 * Threads calling this API need to be registered RCU read-side threads.
48ed1c18 418 * After successful removal, a grace period must be waited for before
50024344
MD
419 * freeing or re-using the memory reserved for old node (which can be
420 * accessed with cds_lfht_iter_get_node).
7b783f81
MD
421 * Upon success, this function issues a full memory barrier before and
422 * after its atomic commit. Upon failure, this function does not issue
423 * any memory barrier.
f0c29ed7 424 */
b9c27904 425extern
bc8c3c74 426int cds_lfht_del(struct cds_lfht *ht, struct cds_lfht_node *node);
ab7d5fc6 427
df55172a 428/*
3a9c66db 429 * cds_lfht_is_node_deleted - query whether a node is removed from hash table.
df55172a
MD
430 *
431 * Return non-zero if the node is deleted from the hash table, 0
432 * otherwise.
433 * Node can be looked up with cds_lfht_lookup and cds_lfht_next,
434 * followed by use of cds_lfht_iter_get_node.
435 * RCU read-side lock must be held between lookup and call to this
436 * function.
437 * Call with rcu_read_lock held.
438 * Threads calling this API need to be registered RCU read-side threads.
7b783f81 439 * This function does not issue any memory barrier.
df55172a 440 */
b9c27904 441extern
df55172a
MD
442int cds_lfht_is_node_deleted(struct cds_lfht_node *node);
443
f0c29ed7 444/*
14044b37 445 * cds_lfht_resize - Force a hash table resize
0422d92c 446 * @ht: the hash table.
1475579c 447 * @new_size: update to this hash table size.
3df0c49c
MD
448 *
449 * Threads calling this API need to be registered RCU read-side threads.
7b783f81 450 * This function does not (necessarily) issue memory barriers.
43387742
MD
451 * cds_lfht_resize should *not* be called from a RCU read-side critical
452 * section.
f0c29ed7 453 */
b9c27904 454extern
1475579c 455void cds_lfht_resize(struct cds_lfht *ht, unsigned long new_size);
464a1ec9 456
6d320126 457/*
3a9c66db
MD
458 * Note: it is safe to perform element removal (del), replacement, or
459 * any hash table update operation during any of the following hash
460 * table traversals.
7b783f81 461 * These functions act as rcu_dereference() to read the node pointers.
6d320126
MD
462 */
463#define cds_lfht_for_each(ht, iter, node) \
464 for (cds_lfht_first(ht, iter), \
465 node = cds_lfht_iter_get_node(iter); \
466 node != NULL; \
467 cds_lfht_next(ht, iter), \
468 node = cds_lfht_iter_get_node(iter))
469
6f554439
LJ
470#define cds_lfht_for_each_duplicate(ht, hash, match, key, iter, node) \
471 for (cds_lfht_lookup(ht, hash, match, key, iter), \
6d320126
MD
472 node = cds_lfht_iter_get_node(iter); \
473 node != NULL; \
474 cds_lfht_next_duplicate(ht, match, key, iter), \
475 node = cds_lfht_iter_get_node(iter))
476
477#define cds_lfht_for_each_entry(ht, iter, pos, member) \
478 for (cds_lfht_first(ht, iter), \
479 pos = caa_container_of(cds_lfht_iter_get_node(iter), \
bdffa73a 480 __typeof__(*(pos)), member); \
92af1a30 481 cds_lfht_iter_get_node(iter) != NULL; \
6d320126
MD
482 cds_lfht_next(ht, iter), \
483 pos = caa_container_of(cds_lfht_iter_get_node(iter), \
bdffa73a 484 __typeof__(*(pos)), member))
6d320126 485
6f554439 486#define cds_lfht_for_each_entry_duplicate(ht, hash, match, key, \
6d320126 487 iter, pos, member) \
6f554439 488 for (cds_lfht_lookup(ht, hash, match, key, iter), \
6d320126 489 pos = caa_container_of(cds_lfht_iter_get_node(iter), \
bdffa73a 490 __typeof__(*(pos)), member); \
92af1a30 491 cds_lfht_iter_get_node(iter) != NULL; \
6d320126
MD
492 cds_lfht_next_duplicate(ht, match, key, iter), \
493 pos = caa_container_of(cds_lfht_iter_get_node(iter), \
bdffa73a 494 __typeof__(*(pos)), member))
6d320126 495
01389791
MD
496#ifdef __cplusplus
497}
498#endif
499
a42cc659 500#endif /* _URCU_RCULFHASH_H */
This page took 0.094932 seconds and 4 git commands to generate.