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_init(struct __cds_wfcq_head *head,
  44                 struct cds_wfcq_tail *tail)
  45 {
  46         ___cds_wfcq_init(head, tail);
  47 }
  48
  49 bool cds_wfcq_empty(cds_wfcq_head_ptr_t head,
  50                 struct cds_wfcq_tail *tail)
  51
  52 {
  53         return _cds_wfcq_empty(head, tail);
  54 }
  55
  56 bool cds_wfcq_enqueue(cds_wfcq_head_ptr_t head,
  57                 struct cds_wfcq_tail *tail,
  58                 struct cds_wfcq_node *node)
  59 {
  60         return _cds_wfcq_enqueue(head, tail, node);
  61 }
  62
  63 void cds_wfcq_dequeue_lock(struct cds_wfcq_head *head,
  64                 struct cds_wfcq_tail *tail)
  65 {
  66         _cds_wfcq_dequeue_lock(head, tail);
  67 }
  68
  69 void cds_wfcq_dequeue_unlock(struct cds_wfcq_head *head,
  70                 struct cds_wfcq_tail *tail)
  71 {
  72         _cds_wfcq_dequeue_unlock(head, tail);
  73 }
  74
  75 struct cds_wfcq_node *cds_wfcq_dequeue_blocking(
  76                 struct cds_wfcq_head *head,
  77                 struct cds_wfcq_tail *tail)
  78 {
  79         return _cds_wfcq_dequeue_blocking(head, tail);
  80 }
  81
  82 struct cds_wfcq_node *cds_wfcq_dequeue_with_state_blocking(
  83                 struct cds_wfcq_head *head,
  84                 struct cds_wfcq_tail *tail,
  85                 int *state)
  86 {
  87         return _cds_wfcq_dequeue_with_state_blocking(head, tail, state);
  88 }
  89
  90 enum cds_wfcq_ret cds_wfcq_splice_blocking(
  91                 struct cds_wfcq_head *dest_q_head,
  92                 struct cds_wfcq_tail *dest_q_tail,
  93                 struct cds_wfcq_head *src_q_head,
  94                 struct cds_wfcq_tail *src_q_tail)
  95 {
  96         return _cds_wfcq_splice_blocking(dest_q_head, dest_q_tail,
  97                                 src_q_head, src_q_tail);
  98 }
  99
 100 struct cds_wfcq_node *__cds_wfcq_dequeue_blocking(
 101                 cds_wfcq_head_ptr_t head,
 102                 struct cds_wfcq_tail *tail)
 103 {
 104         return ___cds_wfcq_dequeue_blocking(head, tail);
 105 }
 106
 107 struct cds_wfcq_node *__cds_wfcq_dequeue_with_state_blocking(
 108                 cds_wfcq_head_ptr_t head,
 109                 struct cds_wfcq_tail *tail,
 110                 int *state)
 111 {
 112         return ___cds_wfcq_dequeue_with_state_blocking(head, tail, state);
 113 }
 114
 115 struct cds_wfcq_node *__cds_wfcq_dequeue_nonblocking(
 116                 cds_wfcq_head_ptr_t head,
 117                 struct cds_wfcq_tail *tail)
 118 {
 119         return ___cds_wfcq_dequeue_nonblocking(head, tail);
 120 }
 121
 122 struct cds_wfcq_node *__cds_wfcq_dequeue_with_state_nonblocking(
 123                 cds_wfcq_head_ptr_t head,
 124                 struct cds_wfcq_tail *tail,
 125                 int *state)
 126 {
 127         return ___cds_wfcq_dequeue_with_state_nonblocking(head, tail, state);
 128 }
 129
 130 enum cds_wfcq_ret __cds_wfcq_splice_blocking(
 131                 cds_wfcq_head_ptr_t dest_q_head,
 132                 struct cds_wfcq_tail *dest_q_tail,
 133                 cds_wfcq_head_ptr_t src_q_head,
 134                 struct cds_wfcq_tail *src_q_tail)
 135 {
 136         return ___cds_wfcq_splice_blocking(dest_q_head, dest_q_tail,
 137                                 src_q_head, src_q_tail);
 138 }
 139
 140 enum cds_wfcq_ret __cds_wfcq_splice_nonblocking(
 141                 cds_wfcq_head_ptr_t dest_q_head,
 142                 struct cds_wfcq_tail *dest_q_tail,
 143                 cds_wfcq_head_ptr_t src_q_head,
 144                 struct cds_wfcq_tail *src_q_tail)
 145 {
 146         return ___cds_wfcq_splice_nonblocking(dest_q_head, dest_q_tail,
 147                                 src_q_head, src_q_tail);
 148 }
 149
 150 struct cds_wfcq_node *__cds_wfcq_first_blocking(
 151                 cds_wfcq_head_ptr_t head,
 152                 struct cds_wfcq_tail *tail)
 153 {
 154         return ___cds_wfcq_first_blocking(head, tail);
 155 }
 156
 157 struct cds_wfcq_node *__cds_wfcq_first_nonblocking(
 158                 cds_wfcq_head_ptr_t head,
 159                 struct cds_wfcq_tail *tail)
 160 {
 161         return ___cds_wfcq_first_nonblocking(head, tail);
 162 }
 163
 164 struct cds_wfcq_node *__cds_wfcq_next_blocking(
 165                 cds_wfcq_head_ptr_t head,
 166                 struct cds_wfcq_tail *tail,
 167                 struct cds_wfcq_node *node)
 168 {
 169         return ___cds_wfcq_next_blocking(head, tail, node);
 170 }
 171
 172 struct cds_wfcq_node *__cds_wfcq_next_nonblocking(
 173                 cds_wfcq_head_ptr_t head,
 174                 struct cds_wfcq_tail *tail,
 175                 struct cds_wfcq_node *node)
 176 {
 177         return ___cds_wfcq_next_nonblocking(head, tail, node);
 178 }