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[qemu.git] / include / migration / colo.h
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 "qemu-common.h"
17 #include "qapi/qapi-types-migration.h"
18
19 enum colo_event {
20     COLO_EVENT_NONE,
21     COLO_EVENT_CHECKPOINT,
22     COLO_EVENT_FAILOVER,
23 };
24
25 void colo_info_init(void);
26
27 void migrate_start_colo_process(MigrationState *s);
28 bool migration_in_colo_state(void);
29
30 /* loadvm */
31 void migration_incoming_enable_colo(void);
32 void migration_incoming_disable_colo(void);
33 bool migration_incoming_colo_enabled(void);
34 void *colo_process_incoming_thread(void *opaque);
35 bool migration_incoming_in_colo_state(void);
36
37 COLOMode get_colo_mode(void);
38
39 /* failover */
40 void colo_do_failover(MigrationState *s);
41
42 void colo_checkpoint_notify(void *opaque);
43 #endif
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