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migration: Introduce migration_ioc_[un]register_yank()

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There're plenty of places in migration/* that checks against either socket or
tls typed ioc for yank operations.  Provide two helpers to hide all these
information.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210722175841.938739-4-peterx@redhat.com>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Peter Xu 2021-07-22 13:58:39 -04:00 • committed by Dr. David Alan Gilbert
parent 43044ac0ee
commit 18711405b5
5 changed files with 36 additions and 25 deletions
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28
migration/yank_functions.c
View file

@ -11,6 +11,9 @@
#include "qapi/error.h"
#include "io/channel.h"
#include "yank_functions.h"
#include "qemu/yank.h"
#include "io/channel-socket.h"
#include "io/channel-tls.h"
void migration_yank_iochannel(void *opaque)
{
@ -18,3 +21,28 @@ void migration_yank_iochannel(void *opaque)
qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
}
/* Return whether yank is supported on this ioc */
static bool migration_ioc_yank_supported(QIOChannel *ioc)
{
return object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET) ||
object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_TLS);
}
void migration_ioc_register_yank(QIOChannel *ioc)
{
if (migration_ioc_yank_supported(ioc)) {
yank_register_function(MIGRATION_YANK_INSTANCE,
migration_yank_iochannel,
QIO_CHANNEL(ioc));
}
}
void migration_ioc_unregister_yank(QIOChannel *ioc)
{
if (migration_ioc_yank_supported(ioc)) {
yank_unregister_function(MIGRATION_YANK_INSTANCE,
migration_yank_iochannel,
QIO_CHANNEL(ioc));
}
}