1 /*
2  * COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO)
3  * (a.k.a. Fault Tolerance or Continuous Replication)
4  *
5  * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
6  * Copyright (c) 2016 FUJITSU LIMITED
7  * Copyright (c) 2016 Intel Corporation
8  *
9  * This work is licensed under the terms of the GNU GPL, version 2 or
10  * later.  See the COPYING file in the top-level directory.
11  */
12 
13 #ifndef QEMU_COLO_H
14 #define QEMU_COLO_H
15 
16 #include "qapi/qapi-types-migration.h"
17 
18 enum colo_event {
19     COLO_EVENT_NONE,
20     COLO_EVENT_CHECKPOINT,
21     COLO_EVENT_FAILOVER,
22 };
23 
24 void migrate_start_colo_process(MigrationState *s);
25 bool migration_in_colo_state(void);
26 
27 /* loadvm */
28 void migration_incoming_enable_colo(void);
29 void migration_incoming_disable_colo(void);
30 bool migration_incoming_colo_enabled(void);
31 void *colo_process_incoming_thread(void *opaque);
32 bool migration_incoming_in_colo_state(void);
33 
34 COLOMode get_colo_mode(void);
35 
36 /* failover */
37 void colo_do_failover(void);
38 
39 void colo_checkpoint_notify(void *opaque);
40 #endif
41