urcu/rculfstack.h

   1 #ifndef _URCU_RCULFSTACK_H
   2 #define _URCU_RCULFSTACK_H
   3
   4 /*
   5  * rculfstack.h
   6  *
   7  * Userspace RCU library - Lock-Free RCU Stack
   8  *
   9  * Copyright 2010 - 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
  26 #include <urcu/compiler.h>
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #ifndef CDS_LFS_RCU_DEPRECATED
  33 #define CDS_LFS_RCU_DEPRECATED  \
  34         CDS_DEPRECATED("urcu/rculfstack.h is deprecated. Please use urcu/lfstack.h instead.")
  35 #endif
  36
  37 struct cds_lfs_node_rcu {
  38         struct cds_lfs_node_rcu *next;
  39 };
  40
  41 struct cds_lfs_stack_rcu {
  42         struct cds_lfs_node_rcu *head;
  43 };
  44
  45 #ifdef _LGPL_SOURCE
  46
  47 #include <urcu/static/rculfstack.h>
  48
  49 static inline CDS_LFS_RCU_DEPRECATED
  50 void cds_lfs_node_init_rcu(struct cds_lfs_node_rcu *node)
  51 {
  52         _cds_lfs_node_init_rcu(node);
  53 }
  54
  55 static inline
  56 void cds_lfs_init_rcu(struct cds_lfs_stack_rcu *s)
  57 {
  58         _cds_lfs_init_rcu(s);
  59 }
  60
  61 static inline CDS_LFS_RCU_DEPRECATED
  62 int cds_lfs_push_rcu(struct cds_lfs_stack_rcu *s,
  63                         struct cds_lfs_node_rcu *node)
  64 {
  65         return _cds_lfs_push_rcu(s, node);
  66 }
  67
  68 static inline CDS_LFS_RCU_DEPRECATED
  69 struct cds_lfs_node_rcu *cds_lfs_pop_rcu(struct cds_lfs_stack_rcu *s)
  70 {
  71         return _cds_lfs_pop_rcu(s);
  72 }
  73
  74 #else /* !_LGPL_SOURCE */
  75
  76 extern CDS_LFS_RCU_DEPRECATED
  77 void cds_lfs_node_init_rcu(struct cds_lfs_node_rcu *node);
  78 extern CDS_LFS_RCU_DEPRECATED
  79 void cds_lfs_init_rcu(struct cds_lfs_stack_rcu *s);
  80 extern CDS_LFS_RCU_DEPRECATED
  81 int cds_lfs_push_rcu(struct cds_lfs_stack_rcu *s,
  82                         struct cds_lfs_node_rcu *node);
  83
  84 /*
  85  * Should be called under rcu read lock critical section.
  86  *
  87  * The caller must wait for a grace period to pass before freeing the returned
  88  * node or modifying the cds_lfs_node_rcu structure.
  89  * Returns NULL if stack is empty.
  90  */
  91 extern CDS_LFS_RCU_DEPRECATED
  92 struct cds_lfs_node_rcu *cds_lfs_pop_rcu(struct cds_lfs_stack_rcu *s);
  93
  94 #endif /* !_LGPL_SOURCE */
  95
  96 #ifdef __cplusplus
  97 }
  98 #endif
  99
 100 #endif /* _URCU_RCULFSTACK_H */