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 "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 int 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