release/src-rt-6.x/linux/linux-2.6/fs/ocfs2/heartbeat.h

   1 /* -*- mode: c; c-basic-offset: 8; -*-
   2  * vim: noexpandtab sw=8 ts=8 sts=0:
   3  *
   4  * heartbeat.h
   5  *
   6  * Function prototypes
   7  *
   8  * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2 of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public
  21  * License along with this program; if not, write to the
  22  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23  * Boston, MA 021110-1307, USA.
  24  */
  25
  26 #ifndef OCFS2_HEARTBEAT_H
  27 #define OCFS2_HEARTBEAT_H
  28
  29 void ocfs2_init_node_maps(struct ocfs2_super *osb);
  30
  31 void ocfs2_setup_hb_callbacks(struct ocfs2_super *osb);
  32 int ocfs2_register_hb_callbacks(struct ocfs2_super *osb);
  33 void ocfs2_clear_hb_callbacks(struct ocfs2_super *osb);
  34 void ocfs2_stop_heartbeat(struct ocfs2_super *osb);
  35
  36 /* node map functions - used to keep track of mounted and in-recovery
  37  * nodes. */
  38 void ocfs2_node_map_init(struct ocfs2_node_map *map);
  39 int ocfs2_node_map_is_empty(struct ocfs2_super *osb,
  40                             struct ocfs2_node_map *map);
  41 void ocfs2_node_map_set_bit(struct ocfs2_super *osb,
  42                             struct ocfs2_node_map *map,
  43                             int bit);
  44 void ocfs2_node_map_clear_bit(struct ocfs2_super *osb,
  45                               struct ocfs2_node_map *map,
  46                               int bit);
  47 int ocfs2_node_map_test_bit(struct ocfs2_super *osb,
  48                             struct ocfs2_node_map *map,
  49                             int bit);
  50 int ocfs2_node_map_iterate(struct ocfs2_super *osb,
  51                            struct ocfs2_node_map *map,
  52                            int idx);
  53 static inline int ocfs2_node_map_first_set_bit(struct ocfs2_super *osb,
  54                                                struct ocfs2_node_map *map)
  55 {
  56         return ocfs2_node_map_iterate(osb, map, 0);
  57 }
  58 int ocfs2_recovery_map_set(struct ocfs2_super *osb,
  59                            int num);
  60 void ocfs2_recovery_map_clear(struct ocfs2_super *osb,
  61                               int num);
  62 /* returns 1 if bit is the only bit set in target, 0 otherwise */
  63 int ocfs2_node_map_is_only(struct ocfs2_super *osb,
  64                            struct ocfs2_node_map *target,
  65                            int bit);
  66
  67 #endif /* OCFS2_HEARTBEAT_H */