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/*
* COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO)
* (a.k.a. Fault Tolerance or Continuous Replication)
*
* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
* Copyright (c) 2016 FUJITSU LIMITED
* Copyright (c) 2016 Intel Corporation
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* later. See the COPYING file in the top-level directory.
*/
#ifndef QEMU_COLO_H
#define QEMU_COLO_H
#include "qapi/qapi-types-migration.h"
enum colo_event {
COLO_EVENT_NONE,
COLO_EVENT_CHECKPOINT,
COLO_EVENT_FAILOVER,
};
void migrate_start_colo_process(MigrationState *s);
bool migration_in_colo_state(void);
/* loadvm */
int migration_incoming_enable_colo(void);
void migration_incoming_disable_colo(void);
bool migration_incoming_colo_enabled(void);
bool migration_incoming_in_colo_state(void);
COLOMode get_colo_mode(void);
/* failover */
void colo_do_failover(void);
/*
* colo_checkpoint_delay_set
*
* Handles change of x-checkpoint-delay migration parameter, called from
* migrate_params_apply() to notify COLO module about the change.
*/
void colo_checkpoint_delay_set(void);
/*
* Starts COLO incoming process. Called from process_incoming_migration_co()
* after loading the state.
*
* Called with BQL locked, may temporary release BQL.
*/
int coroutine_fn colo_incoming_co(void);
void colo_shutdown(void);
#endif
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