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 migrate_start_colo_process(MigrationState *s);
  26 bool migration_in_colo_state(void);
  27
  28 /* loadvm */
  29 void migration_incoming_enable_colo(void);
  30 void migration_incoming_disable_colo(void);
  31 bool migration_incoming_colo_enabled(void);
  32 void *colo_process_incoming_thread(void *opaque);
  33 bool migration_incoming_in_colo_state(void);
  34
  35 COLOMode get_colo_mode(void);
  36
  37 /* failover */
  38 void colo_do_failover(void);
  39
  40 void colo_checkpoint_notify(void *opaque);
  41 #endif