linux/fs/ocfs2/cluster/heartbeat.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * heartbeat.h
 *
 * Function prototypes
 *
 * Copyright (C) 2004 Oracle.  All rights reserved.
 */

#ifndef O2CLUSTER_HEARTBEAT_H
#define O2CLUSTER_HEARTBEAT_H

#include "ocfs2_heartbeat.h"

#define O2HB_REGION_TIMEOUT_MS …

#define O2HB_MAX_REGION_NAME_LEN …

/* number of changes to be seen as live */
#define O2HB_LIVE_THRESHOLD …
/* number of equal samples to be seen as dead */
extern unsigned int o2hb_dead_threshold;
#define O2HB_DEFAULT_DEAD_THRESHOLD …
/* Otherwise MAX_WRITE_TIMEOUT will be zero... */
#define O2HB_MIN_DEAD_THRESHOLD …
#define O2HB_MAX_WRITE_TIMEOUT_MS …

#define O2HB_CB_MAGIC …

/* callback stuff */
enum o2hb_callback_type { … };

struct o2nm_node;
o2hb_cb_func;

struct o2hb_callback_func { … };

struct config_group *o2hb_alloc_hb_set(void);
void o2hb_free_hb_set(struct config_group *group);

void o2hb_setup_callback(struct o2hb_callback_func *hc,
			 enum o2hb_callback_type type,
			 o2hb_cb_func *func,
			 void *data,
			 int priority);
int o2hb_register_callback(const char *region_uuid,
			   struct o2hb_callback_func *hc);
void o2hb_unregister_callback(const char *region_uuid,
			      struct o2hb_callback_func *hc);
void o2hb_fill_node_map(unsigned long *map,
			unsigned int bits);
void o2hb_exit(void);
void o2hb_init(void);
int o2hb_check_node_heartbeating_no_sem(u8 node_num);
int o2hb_check_node_heartbeating_from_callback(u8 node_num);
void o2hb_stop_all_regions(void);
int o2hb_get_all_regions(char *region_uuids, u8 numregions);
int o2hb_global_heartbeat_active(void);

#endif /* O2CLUSTER_HEARTBEAT_H */