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f018eb62b2
This helper is mostly the same as migration_is_running(), except that one has COLO reported as true, the other has CANCELLING reported as true. Per my past years experience on the state changes, none of them should matter. To make it slightly safer, report both COLO || CANCELLING to be true in migration_is_running(), then drop the other one. We kept the 1st only because the name is simpler, and clear enough. Reviewed-by: Cédric Le Goater <clg@redhat.com> Reviewed-by: Fabiano Rosas <farosas@suse.de> Link: https://lore.kernel.org/r/20241024213056.1395400-5-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com>
110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*
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* QEMU migration miscellaneus exported functions
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*
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* Copyright IBM, Corp. 2008
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef MIGRATION_MISC_H
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#define MIGRATION_MISC_H
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#include "qemu/notify.h"
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#include "qapi/qapi-types-migration.h"
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#include "qapi/qapi-types-net.h"
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#include "migration/client-options.h"
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/* migration/ram.c */
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typedef enum PrecopyNotifyReason {
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PRECOPY_NOTIFY_SETUP = 0,
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PRECOPY_NOTIFY_BEFORE_BITMAP_SYNC = 1,
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PRECOPY_NOTIFY_AFTER_BITMAP_SYNC = 2,
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PRECOPY_NOTIFY_COMPLETE = 3,
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PRECOPY_NOTIFY_CLEANUP = 4,
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PRECOPY_NOTIFY_MAX = 5,
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} PrecopyNotifyReason;
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typedef struct PrecopyNotifyData {
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enum PrecopyNotifyReason reason;
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} PrecopyNotifyData;
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void precopy_infrastructure_init(void);
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void precopy_add_notifier(NotifierWithReturn *n);
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void precopy_remove_notifier(NotifierWithReturn *n);
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int precopy_notify(PrecopyNotifyReason reason, Error **errp);
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void qemu_guest_free_page_hint(void *addr, size_t len);
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bool migrate_ram_is_ignored(RAMBlock *block);
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/* migration/block.c */
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AnnounceParameters *migrate_announce_params(void);
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/* migration/savevm.c */
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void dump_vmstate_json_to_file(FILE *out_fp);
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/* migration/migration.c */
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void migration_object_init(void);
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void migration_shutdown(void);
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bool migration_is_idle(void);
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bool migration_is_active(void);
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bool migration_is_device(void);
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bool migration_is_running(void);
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bool migration_thread_is_self(void);
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typedef enum MigrationEventType {
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MIG_EVENT_PRECOPY_SETUP,
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MIG_EVENT_PRECOPY_DONE,
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MIG_EVENT_PRECOPY_FAILED,
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MIG_EVENT_MAX
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} MigrationEventType;
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typedef struct MigrationEvent {
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MigrationEventType type;
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} MigrationEvent;
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/*
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* A MigrationNotifyFunc may return an error code and an Error object,
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* but only when @e->type is MIG_EVENT_PRECOPY_SETUP. The code is an int
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* to allow for different failure modes and recovery actions.
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*/
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typedef int (*MigrationNotifyFunc)(NotifierWithReturn *notify,
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MigrationEvent *e, Error **errp);
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/*
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* Register the notifier @notify to be called when a migration event occurs
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* for MIG_MODE_NORMAL, as specified by the MigrationEvent passed to @func.
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* Notifiers may receive events in any of the following orders:
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* - MIG_EVENT_PRECOPY_SETUP -> MIG_EVENT_PRECOPY_DONE
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* - MIG_EVENT_PRECOPY_SETUP -> MIG_EVENT_PRECOPY_FAILED
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* - MIG_EVENT_PRECOPY_FAILED
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*/
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void migration_add_notifier(NotifierWithReturn *notify,
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MigrationNotifyFunc func);
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/*
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* Same as migration_add_notifier, but applies to be specified @mode.
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*/
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void migration_add_notifier_mode(NotifierWithReturn *notify,
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MigrationNotifyFunc func, MigMode mode);
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void migration_remove_notifier(NotifierWithReturn *notify);
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void migration_file_set_error(int ret, Error *err);
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/* True if incoming migration entered POSTCOPY_INCOMING_DISCARD */
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bool migration_in_incoming_postcopy(void);
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/* True if incoming migration entered POSTCOPY_INCOMING_ADVISE */
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bool migration_incoming_postcopy_advised(void);
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/* True if background snapshot is active */
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bool migration_in_bg_snapshot(void);
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#endif
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