wfcqueue.c

   1 /*
   2  * wfcqueue.c
   3  *
   4  * Userspace RCU library - Concurrent Queue with Wait-Free Enqueue/Blocking Dequeue
   5  *
   6  * Copyright 2010-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  * Copyright 2011-2012 - Lai Jiangshan <laijs@cn.fujitsu.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 /* Do not #define _LGPL_SOURCE to ensure we can emit the wrapper symbols */
  25 #include "urcu/wfcqueue.h"
  26 #include "urcu/static/wfcqueue.h"
  27
  28 /*
  29  * library wrappers to be used by non-LGPL compatible source code.
  30  */
  31
  32 void cds_wfcq_node_init(struct cds_wfcq_node *node)
  33 {
  34         _cds_wfcq_node_init(node);
  35 }
  36
  37 void cds_wfcq_init(struct cds_wfcq_head *head,
  38                 struct cds_wfcq_tail *tail)
  39 {
  40         _cds_wfcq_init(head, tail);
  41 }
  42
  43 void cds_wfcq_destroy(struct cds_wfcq_head *head,
  44                 struct cds_wfcq_tail *tail)
  45 {
  46         _cds_wfcq_destroy(head, tail);
  47 }
  48
  49 bool cds_wfcq_empty(struct cds_wfcq_head *head,
  50                 struct cds_wfcq_tail *tail)
  51 {
  52         return _cds_wfcq_empty(head, tail);
  53 }
  54
  55 bool cds_wfcq_enqueue(struct cds_wfcq_head *head,
  56                 struct cds_wfcq_tail *tail,
  57                 struct cds_wfcq_node *node)
  58 {
  59         return _cds_wfcq_enqueue(head, tail, node);
  60 }
  61
  62 void cds_wfcq_dequeue_lock(struct cds_wfcq_head *head,
  63                 struct cds_wfcq_tail *tail)
  64 {
  65         _cds_wfcq_dequeue_lock(head, tail);
  66 }
  67
  68 void cds_wfcq_dequeue_unlock(struct cds_wfcq_head *head,
  69                 struct cds_wfcq_tail *tail)
  70 {
  71         _cds_wfcq_dequeue_unlock(head, tail);
  72 }
  73
  74 struct cds_wfcq_node *cds_wfcq_dequeue_blocking(
  75                 struct cds_wfcq_head *head,
  76                 struct cds_wfcq_tail *tail)
  77 {
  78         return _cds_wfcq_dequeue_blocking(head, tail);
  79 }
  80
  81 struct cds_wfcq_node *cds_wfcq_dequeue_with_state_blocking(
  82                 struct cds_wfcq_head *head,
  83                 struct cds_wfcq_tail *tail,
  84                 int *state)
  85 {
  86         return _cds_wfcq_dequeue_with_state_blocking(head, tail, state);
  87 }
  88
  89 enum cds_wfcq_ret cds_wfcq_splice_blocking(
  90                 struct cds_wfcq_head *dest_q_head,
  91                 struct cds_wfcq_tail *dest_q_tail,
  92                 struct cds_wfcq_head *src_q_head,
  93                 struct cds_wfcq_tail *src_q_tail)
  94 {
  95         return _cds_wfcq_splice_blocking(dest_q_head, dest_q_tail,
  96                                 src_q_head, src_q_tail);
  97 }
  98
  99 struct cds_wfcq_node *__cds_wfcq_dequeue_blocking(
 100                 struct cds_wfcq_head *head,
 101                 struct cds_wfcq_tail *tail)
 102 {
 103         return ___cds_wfcq_dequeue_blocking(head, tail);
 104 }
 105
 106 struct cds_wfcq_node *__cds_wfcq_dequeue_with_state_blocking(
 107                 struct cds_wfcq_head *head,
 108                 struct cds_wfcq_tail *tail,
 109                 int *state)
 110 {
 111         return ___cds_wfcq_dequeue_with_state_blocking(head, tail, state);
 112 }
 113
 114 struct cds_wfcq_node *__cds_wfcq_dequeue_nonblocking(
 115                 struct cds_wfcq_head *head,
 116                 struct cds_wfcq_tail *tail)
 117 {
 118         return ___cds_wfcq_dequeue_nonblocking(head, tail);
 119 }
 120
 121 struct cds_wfcq_node *__cds_wfcq_dequeue_with_state_nonblocking(
 122                 struct cds_wfcq_head *head,
 123                 struct cds_wfcq_tail *tail,
 124                 int *state)
 125 {
 126         return ___cds_wfcq_dequeue_with_state_nonblocking(head, tail, state);
 127 }
 128
 129 enum cds_wfcq_ret __cds_wfcq_splice_blocking(
 130                 struct cds_wfcq_head *dest_q_head,
 131                 struct cds_wfcq_tail *dest_q_tail,
 132                 struct cds_wfcq_head *src_q_head,
 133                 struct cds_wfcq_tail *src_q_tail)
 134 {
 135         return ___cds_wfcq_splice_blocking(dest_q_head, dest_q_tail,
 136                                 src_q_head, src_q_tail);
 137 }
 138
 139 enum cds_wfcq_ret __cds_wfcq_splice_nonblocking(
 140                 struct cds_wfcq_head *dest_q_head,
 141                 struct cds_wfcq_tail *dest_q_tail,
 142                 struct cds_wfcq_head *src_q_head,
 143                 struct cds_wfcq_tail *src_q_tail)
 144 {
 145         return ___cds_wfcq_splice_nonblocking(dest_q_head, dest_q_tail,
 146                                 src_q_head, src_q_tail);
 147 }
 148
 149 struct cds_wfcq_node *__cds_wfcq_first_blocking(
 150                 struct cds_wfcq_head *head,
 151                 struct cds_wfcq_tail *tail)
 152 {
 153         return ___cds_wfcq_first_blocking(head, tail);
 154 }
 155
 156 struct cds_wfcq_node *__cds_wfcq_first_nonblocking(
 157                 struct cds_wfcq_head *head,
 158                 struct cds_wfcq_tail *tail)
 159 {
 160         return ___cds_wfcq_first_nonblocking(head, tail);
 161 }
 162
 163 struct cds_wfcq_node *__cds_wfcq_next_blocking(
 164                 struct cds_wfcq_head *head,
 165                 struct cds_wfcq_tail *tail,
 166                 struct cds_wfcq_node *node)
 167 {
 168         return ___cds_wfcq_next_blocking(head, tail, node);
 169 }
 170
 171 struct cds_wfcq_node *__cds_wfcq_next_nonblocking(
 172                 struct cds_wfcq_head *head,
 173                 struct cds_wfcq_tail *tail,
 174                 struct cds_wfcq_node *node)
 175 {
 176         return ___cds_wfcq_next_nonblocking(head, tail, node);
 177 }