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add migration state change notifiers

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This patch adds functions to register and unregister notifiers for
migration state changes and a function to query the migration state.
The notifier is called on every state change.  Once after establishing a
new migration object (which is in active state then) and once when the
state changes from active to completed, canceled or error.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2010-12-13 17:30:12 +01:00
parent 0bfe006c53
commit 99a0db9b8d
2 changed files with 33 additions and 0 deletions
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5
migration.h
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@ -16,6 +16,7 @@
#include "qdict.h"
#include "qemu-common.h"
#include "notify.h"
#define MIG_STATE_ERROR -1
#define MIG_STATE_COMPLETED 0
@ -134,4 +135,8 @@ static inline FdMigrationState *migrate_to_fms(MigrationState *mig_state)
return container_of(mig_state, FdMigrationState, mig_state);
}
void add_migration_state_change_notifier(Notifier *notify);
void remove_migration_state_change_notifier(Notifier *notify);
int get_migration_state(void);
#endif