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/*
* QEMU live migration
*
* Copyright IBM, Corp. 2008
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
*/
#ifndef QEMU_MIGRATION_H
#define QEMU_MIGRATION_H
#include "qemu-common.h"
#define MIG_STATE_ERROR -1
#define MIG_STATE_COMPLETED 0
#define MIG_STATE_CANCELLED 1
#define MIG_STATE_ACTIVE 2
typedef struct MigrationState MigrationState;
struct MigrationState
{
/* FIXME: add more accessors to print migration info */
void (*cancel)(MigrationState *s);
int (*get_status)(MigrationState *s);
void (*release)(MigrationState *s);
};
typedef struct FdMigrationState FdMigrationState;
struct FdMigrationState
{
MigrationState mig_state;
int64_t bandwidth_limit;
QEMUFile *file;
int fd;
Monitor *mon_resume;
int state;
int (*get_error)(struct FdMigrationState*);
int (*close)(struct FdMigrationState*);
int (*write)(struct FdMigrationState*, const void *, size_t);
void *opaque;
};
void qemu_start_incoming_migration(const char *uri);
void do_migrate(Monitor *mon, int detach, const char *uri);
void do_migrate_cancel(Monitor *mon);
void do_migrate_set_speed(Monitor *mon, const char *value);
uint64_t migrate_max_downtime(void);
void do_migrate_set_downtime(Monitor *mon, const char *value);
void do_info_migrate(Monitor *mon);
int exec_start_incoming_migration(const char *host_port);
MigrationState *exec_start_outgoing_migration(const char *host_port,
int64_t bandwidth_limit,
int detach);
int tcp_start_incoming_migration(const char *host_port);
MigrationState *tcp_start_outgoing_migration(const char *host_port,
int64_t bandwidth_limit,
int detach);
void migrate_fd_monitor_suspend(FdMigrationState *s);
void migrate_fd_error(FdMigrationState *s);
void migrate_fd_cleanup(FdMigrationState *s);
void migrate_fd_put_notify(void *opaque);
ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size);
void migrate_fd_connect(FdMigrationState *s);
void migrate_fd_put_ready(void *opaque);
int migrate_fd_get_status(MigrationState *mig_state);
void migrate_fd_cancel(MigrationState *mig_state);
void migrate_fd_release(MigrationState *mig_state);
void migrate_fd_wait_for_unfreeze(void *opaque);
int migrate_fd_close(void *opaque);
static inline FdMigrationState *migrate_to_fms(MigrationState *mig_state)
{
return container_of(mig_state, FdMigrationState, mig_state);
}
uint64_t ram_bytes_remaining(void);
uint64_t ram_bytes_transferred(void);
uint64_t ram_bytes_total(void);
int ram_save_live(QEMUFile *f, int stage, void *opaque);
int ram_load(QEMUFile *f, void *opaque, int version_id);
#endif
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