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migration: init dst in migration_object_init too 

Though we may not need it, now we init both the src/dst migration
objects in migration_object_init() so that even incoming migration
object would be thread safe (it was not).

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180502104740.12123-20-peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Peter Xu 2018-05-02 18:47:35 +08:00 committed by Juan Quintela
parent 9419069695
commit e1b1b1bc36
1 changed files with 19 additions and 18 deletions
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37
migration/migration.c
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@ -106,6 +106,7 @@ enum mig_rp_message_type {
dynamic creation of migration */
static MigrationState *current_migration;
static MigrationIncomingState *current_incoming;
static bool migration_object_check(MigrationState *ms, Error **errp);
static int migration_maybe_pause(MigrationState *s,
@ -121,6 +122,22 @@ void migration_object_init(void)
assert(!current_migration);
current_migration = MIGRATION_OBJ(object_new(TYPE_MIGRATION));
/*
* Init the migrate incoming object as well no matter whether
* we'll use it or not.
*/
assert(!current_incoming);
current_incoming = g_new0(MigrationIncomingState, 1);
current_incoming->state = MIGRATION_STATUS_NONE;
current_incoming->postcopy_remote_fds =
g_array_new(FALSE, TRUE, sizeof(struct PostCopyFD));
qemu_mutex_init(&current_incoming->rp_mutex);
qemu_event_init(&current_incoming->main_thread_load_event, false);
qemu_sem_init(&current_incoming->postcopy_pause_sem_dst, 0);
qemu_sem_init(&current_incoming->postcopy_pause_sem_fault, 0);
init_dirty_bitmap_incoming_migration();
if (!migration_object_check(current_migration, &err)) {
error_report_err(err);
exit(1);
@ -151,24 +168,8 @@ MigrationState *migrate_get_current(void)
MigrationIncomingState *migration_incoming_get_current(void)
{
static bool once;
static MigrationIncomingState mis_current;
if (!once) {
mis_current.state = MIGRATION_STATUS_NONE;
memset(&mis_current, 0, sizeof(MigrationIncomingState));
mis_current.postcopy_remote_fds = g_array_new(FALSE, TRUE,
sizeof(struct PostCopyFD));
qemu_mutex_init(&mis_current.rp_mutex);
qemu_event_init(&mis_current.main_thread_load_event, false);
qemu_sem_init(&mis_current.postcopy_pause_sem_dst, 0);
qemu_sem_init(&mis_current.postcopy_pause_sem_fault, 0);
init_dirty_bitmap_incoming_migration();
once = true;
}
return &mis_current;
assert(current_incoming);
return current_incoming;
}
void migration_incoming_state_destroy(void)