ceph/src/rbd_replay/PendingIO.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2014 Adam Crume <adamcrume@gmail.com>
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #include "PendingIO.hpp"
  16 #include "rbd_replay_debug.hpp"
  17
  18 #define dout_context g_ceph_context
  19
  20 using namespace rbd_replay;
  21
  22 extern "C"
  23 void rbd_replay_pending_io_callback(librbd::completion_t cb, void *arg) {
  24   PendingIO *io = static_cast<PendingIO*>(arg);
  25   io->completed(cb);
  26 }
  27
  28 PendingIO::PendingIO(action_id_t id,
  29                      ActionCtx &worker)
  30   : m_id(id),
  31     m_completion(new librbd::RBD::AioCompletion(this, rbd_replay_pending_io_callback)),
  32     m_worker(worker) {
  33     }
  34
  35 PendingIO::~PendingIO() {
  36   m_completion->release();
  37 }
  38
  39 void PendingIO::completed(librbd::completion_t cb) {
  40   dout(ACTION_LEVEL) << "Completed pending IO #" << m_id << dendl;
  41   ssize_t r = m_completion->get_return_value();
  42   assertf(r >= 0, "id = %d, r = %d", m_id, r);
  43   m_worker.remove_pending(shared_from_this());
  44 }