include/sysemu/event-loop-base.h

   1 /*
   2  * QEMU event-loop backend
   3  *
   4  * Copyright (C) 2022 Red Hat Inc
   5  *
   6  * Authors:
   7  *  Nicolas Saenz Julienne <nsaenzju@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12 #ifndef QEMU_EVENT_LOOP_BASE_H
  13 #define QEMU_EVENT_LOOP_BASE_H
  14
  15 #include "qom/object.h"
  16 #include "block/aio.h"
  17 #include "qemu/typedefs.h"
  18
  19 #define TYPE_EVENT_LOOP_BASE         "event-loop-base"
  20 OBJECT_DECLARE_TYPE(EventLoopBase, EventLoopBaseClass,
  21                     EVENT_LOOP_BASE)
  22
  23 struct EventLoopBaseClass {
  24     ObjectClass parent_class;
  25
  26     void (*init)(EventLoopBase *base, Error **errp);
  27     void (*update_params)(EventLoopBase *base, Error **errp);
  28     bool (*can_be_deleted)(EventLoopBase *base);
  29 };
  30
  31 struct EventLoopBase {
  32     Object parent;
  33
  34     /* AioContext AIO engine parameters */
  35     int64_t aio_max_batch;
  36
  37     /* AioContext thread pool parameters */
  38     int64_t thread_pool_min;
  39     int64_t thread_pool_max;
  40 };
  41 #endif