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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 "qdict.h"
#include "qemu-common.h"
#include "notify.h"
#include "error.h"
typedef struct MigrationState MigrationState;
struct MigrationState
{
int64_t bandwidth_limit;
QEMUFile *file;
int fd;
Monitor *mon;
int state;
int (*get_error)(MigrationState *s);
int (*close)(MigrationState *s);
int (*write)(MigrationState *s, const void *buff, size_t size);
void *opaque;
int blk;
int shared;
};
void process_incoming_migration(QEMUFile *f);
int qemu_start_incoming_migration(const char *uri);
int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data);
uint64_t migrate_max_downtime(void);
void do_info_migrate_print(Monitor *mon, const QObject *data);
void do_info_migrate(Monitor *mon, QObject **ret_data);
int exec_start_incoming_migration(const char *host_port);
int exec_start_outgoing_migration(MigrationState *s, const char *host_port);
int tcp_start_incoming_migration(const char *host_port);
int tcp_start_outgoing_migration(MigrationState *s, const char *host_port);
int unix_start_incoming_migration(const char *path);
int unix_start_outgoing_migration(MigrationState *s, const char *path);
int fd_start_incoming_migration(const char *path);
int fd_start_outgoing_migration(MigrationState *s, const char *fdname);
void migrate_fd_error(MigrationState *s);
void migrate_fd_connect(MigrationState *s);
void add_migration_state_change_notifier(Notifier *notify);
void remove_migration_state_change_notifier(Notifier *notify);
bool migration_is_active(MigrationState *);
bool migration_has_finished(MigrationState *);
bool migration_has_failed(MigrationState *);
uint64_t ram_bytes_remaining(void);
uint64_t ram_bytes_transferred(void);
uint64_t ram_bytes_total(void);
int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque);
int ram_load(QEMUFile *f, void *opaque, int version_id);
/**
* @migrate_add_blocker - prevent migration from proceeding
*
* @reason - an error to be returned whenever migration is attempted
*/
void migrate_add_blocker(Error *reason);
/**
* @migrate_del_blocker - remove a blocking error from migration
*
* @reason - the error blocking migration
*/
void migrate_del_blocker(Error *reason);
#endif
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