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70ac26b9e5
'event-loop-base' provides basic property handling for all 'AioContext'
based event loops. So let's define a new 'MainLoopClass' that inherits
from it. This will permit tweaking the main loop's properties through
qapi as well as through the command line using the '-object' keyword[1].
Only one instance of 'MainLoopClass' might be created at any time.
'EventLoopBaseClass' learns a new callback, 'can_be_deleted()' so as to
mark 'MainLoop' as non-deletable.
[1] For example:
-object main-loop,id=main-loop,aio-max-batch=<value>
Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20220425075723.20019-3-nsaenzju@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
37 lines
903 B
C
37 lines
903 B
C
/*
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* QEMU event-loop backend
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*
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* Copyright (C) 2022 Red Hat Inc
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*
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* Authors:
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* Nicolas Saenz Julienne <nsaenzju@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_EVENT_LOOP_BASE_H
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#define QEMU_EVENT_LOOP_BASE_H
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#include "qom/object.h"
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#include "block/aio.h"
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#include "qemu/typedefs.h"
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#define TYPE_EVENT_LOOP_BASE "event-loop-base"
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OBJECT_DECLARE_TYPE(EventLoopBase, EventLoopBaseClass,
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EVENT_LOOP_BASE)
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struct EventLoopBaseClass {
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ObjectClass parent_class;
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void (*init)(EventLoopBase *base, Error **errp);
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void (*update_params)(EventLoopBase *base, Error **errp);
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bool (*can_be_deleted)(EventLoopBase *base);
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};
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struct EventLoopBase {
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Object parent;
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/* AioContext AIO engine parameters */
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int64_t aio_max_batch;
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};
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#endif
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