mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 23:51:37 +00:00
b3c85c4cdf
Export function in o2hb to get a list of heartbeat regions. It also adds an upper limit to the length of the heartbeat region name. o2hb_global_heartbeat_active() currently disables global heartbeat. It will be enabled in a later patch after all the code is added. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
|
|
* vim: noexpandtab sw=8 ts=8 sts=0:
|
|
*
|
|
* heartbeat.h
|
|
*
|
|
* Function prototypes
|
|
*
|
|
* Copyright (C) 2004 Oracle. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef O2CLUSTER_HEARTBEAT_H
|
|
#define O2CLUSTER_HEARTBEAT_H
|
|
|
|
#include "ocfs2_heartbeat.h"
|
|
|
|
#define O2HB_REGION_TIMEOUT_MS 2000
|
|
|
|
#define O2HB_MAX_REGION_NAME_LEN 32
|
|
|
|
/* number of changes to be seen as live */
|
|
#define O2HB_LIVE_THRESHOLD 2
|
|
/* number of equal samples to be seen as dead */
|
|
extern unsigned int o2hb_dead_threshold;
|
|
#define O2HB_DEFAULT_DEAD_THRESHOLD 31
|
|
/* Otherwise MAX_WRITE_TIMEOUT will be zero... */
|
|
#define O2HB_MIN_DEAD_THRESHOLD 2
|
|
#define O2HB_MAX_WRITE_TIMEOUT_MS (O2HB_REGION_TIMEOUT_MS * (o2hb_dead_threshold - 1))
|
|
|
|
#define O2HB_CB_MAGIC 0x51d1e4ec
|
|
|
|
/* callback stuff */
|
|
enum o2hb_callback_type {
|
|
O2HB_NODE_DOWN_CB = 0,
|
|
O2HB_NODE_UP_CB,
|
|
O2HB_NUM_CB
|
|
};
|
|
|
|
struct o2nm_node;
|
|
typedef void (o2hb_cb_func)(struct o2nm_node *, int, void *);
|
|
|
|
struct o2hb_callback_func {
|
|
u32 hc_magic;
|
|
struct list_head hc_item;
|
|
o2hb_cb_func *hc_func;
|
|
void *hc_data;
|
|
int hc_priority;
|
|
enum o2hb_callback_type hc_type;
|
|
};
|
|
|
|
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 bytes);
|
|
void o2hb_exit(void);
|
|
int o2hb_init(void);
|
|
int o2hb_check_node_heartbeating(u8 node_num);
|
|
int o2hb_check_node_heartbeating_from_callback(u8 node_num);
|
|
int o2hb_check_local_node_heartbeating(void);
|
|
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 */
|