usb-bsd: convert to QOM
[qemu.git] / migration.h
1 /*
2 * QEMU live migration
3 *
4 * Copyright IBM, Corp. 2008
5 *
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
12 */
13
14 #ifndef QEMU_MIGRATION_H
15 #define QEMU_MIGRATION_H
16
17 #include "qdict.h"
18 #include "qemu-common.h"
19 #include "notify.h"
20 #include "error.h"
21
22 typedef struct MigrationState MigrationState;
23
24 struct MigrationState
25 {
26 int64_t bandwidth_limit;
27 QEMUFile *file;
28 int fd;
29 Monitor *mon;
30 int state;
31 int (*get_error)(MigrationState *s);
32 int (*close)(MigrationState *s);
33 int (*write)(MigrationState *s, const void *buff, size_t size);
34 void *opaque;
35 int blk;
36 int shared;
37 };
38
39 void process_incoming_migration(QEMUFile *f);
40
41 int qemu_start_incoming_migration(const char *uri);
42
43 int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data);
44
45 uint64_t migrate_max_downtime(void);
46
47 void do_info_migrate_print(Monitor *mon, const QObject *data);
48
49 void do_info_migrate(Monitor *mon, QObject **ret_data);
50
51 int exec_start_incoming_migration(const char *host_port);
52
53 int exec_start_outgoing_migration(MigrationState *s, const char *host_port);
54
55 int tcp_start_incoming_migration(const char *host_port);
56
57 int tcp_start_outgoing_migration(MigrationState *s, const char *host_port);
58
59 int unix_start_incoming_migration(const char *path);
60
61 int unix_start_outgoing_migration(MigrationState *s, const char *path);
62
63 int fd_start_incoming_migration(const char *path);
64
65 int fd_start_outgoing_migration(MigrationState *s, const char *fdname);
66
67 void migrate_fd_error(MigrationState *s);
68
69 void migrate_fd_connect(MigrationState *s);
70
71 void add_migration_state_change_notifier(Notifier *notify);
72 void remove_migration_state_change_notifier(Notifier *notify);
73 bool migration_is_active(MigrationState *);
74 bool migration_has_finished(MigrationState *);
75 bool migration_has_failed(MigrationState *);
76
77 uint64_t ram_bytes_remaining(void);
78 uint64_t ram_bytes_transferred(void);
79 uint64_t ram_bytes_total(void);
80
81 int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque);
82 int ram_load(QEMUFile *f, void *opaque, int version_id);
83
84 /**
85 * @migrate_add_blocker - prevent migration from proceeding
86 *
87 * @reason - an error to be returned whenever migration is attempted
88 */
89 void migrate_add_blocker(Error *reason);
90
91 /**
92 * @migrate_del_blocker - remove a blocking error from migration
93 *
94 * @reason - the error blocking migration
95 */
96 void migrate_del_blocker(Error *reason);
97
98 #endif