drivers/md/dm-vdo/indexer/funnel-requestqueue.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2023 Red Hat
   4  */
   5
   6 #ifndef UDS_REQUEST_QUEUE_H
   7 #define UDS_REQUEST_QUEUE_H
   8
   9 #include "indexer.h"
  10
  11 /*
  12  * A simple request queue which will handle new requests in the order in which they are received,
  13  * and will attempt to handle requeued requests before new ones. However, the nature of the
  14  * implementation means that it cannot guarantee this ordering; the prioritization is merely a
  15  * hint.
  16  */
  17
  18 struct uds_request_queue;
  19
  20 typedef void (*uds_request_queue_processor_fn)(struct uds_request *);
  21
  22 int __must_check uds_make_request_queue(const char *queue_name,
  23                                         uds_request_queue_processor_fn processor,
  24                                         struct uds_request_queue **queue_ptr);
  25
  26 void uds_request_queue_enqueue(struct uds_request_queue *queue,
  27                                struct uds_request *request);
  28
  29 void uds_request_queue_finish(struct uds_request_queue *queue);
  30
  31 #endif /* UDS_REQUEST_QUEUE_H */