xref: /openbmc/linux/fs/ocfs2/heartbeat.h (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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 */
68