qemu/migration.h
aliguori 731b03642d monitor: Decouple terminals (Jan Kiszka)
Currently all registered (and activate) monitor terminals work in
broadcast mode: Everyone sees what someone else types on some other
terminal and what the monitor reports back. This model is broken when
you have a management monitor terminal that is automatically operated
and some other terminal used for independent guest inspection. Such
additional terminals can be multiplexed device channels or a gdb
frontend connected to QEMU's stub.

Therefore, this patch decouples the buffers and states of all monitor
terminals, allowing the user to operate them independently. It finally
starts to use the 'mon' parameter that was introduced earlier with the
API rework. It also defines the default monitor: the first instantance
that has the MONITOR_IS_DEFAULT flag set, and that is the monitor
created via the "-monitor" command line switch (or "vc" if none is
given).

As the patch requires to rework the monitor suspension interface, it
also takes the freedom to make it "truely" suspending (so far suspending
meant suppressing the prompt, but inputs were still processed).

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6715 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:01:42 +00:00

102 lines
2.4 KiB
C

/*
* 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);
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);
}
#endif