urcu/rcuja.h

   1 #ifndef _URCU_RCUJA_H
   2 #define _URCU_RCUJA_H
   3
   4 /*
   5  * urcu/rcuja.h
   6  *
   7  * Userspace RCU library - RCU Judy Array
   8  *
   9  * Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  24  *
  25  * Include this file _after_ including your URCU flavor.
  26  */
  27
  28 #include <stdint.h>
  29 #include <urcu/compiler.h>
  30 #include <urcu-call-rcu.h>
  31 #include <urcu-flavor.h>
  32 #include <stdint.h>
  33 #include <urcu/rcuhlist.h>
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 struct cds_ja_node {
  40         /* Linked list of nodes with same key */
  41         struct cds_hlist_node list;
  42         /* delayed reclaim */
  43         struct rcu_head head;
  44 };
  45
  46 struct cds_ja;
  47
  48 /*
  49  * cds_ja_node_init - initialize a judy array node
  50  * @node: the node to initialize.
  51  *
  52  * This function is kept to be eventually used for debugging purposes
  53  * (detection of memory corruption).
  54  */
  55 static inline
  56 void cds_ja_node_init(struct cds_ja_node *node)
  57 {
  58 }
  59
  60 struct cds_hlist_head cds_ja_lookup(struct cds_ja *ja, uint64_t key);
  61
  62 int cds_ja_add(struct cds_ja *ja, uint64_t key,
  63                 struct cds_ja_node *new_node);
  64
  65 struct cds_ja_node *cds_ja_add_unique(struct cds_ja *ja, uint64_t key,
  66                 struct cds_ja_node *new_node);
  67
  68 int cds_ja_del(struct cds_ja *ja, uint64_t key,
  69                 struct cds_ja_node *node);
  70
  71 struct cds_ja *_cds_ja_new(unsigned int key_bits,
  72                 const struct rcu_flavor_struct *flavor);
  73
  74 static inline
  75 struct cds_ja *cds_ja_new(unsigned int key_bits)
  76 {
  77         return _cds_ja_new(key_bits, &rcu_flavor);
  78 }
  79
  80 int cds_ja_destroy(struct cds_ja *ja,
  81                 void (*free_node_cb)(struct rcu_head *head));
  82
  83 #ifdef __cplusplus
  84 }
  85 #endif
  86
  87 #endif /* _URCU_RCUJA_H */