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 void colo_shutdown(void); 41 #endif 42