--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+
+#include "rbd_backend.h"
+#include <boost/tuple/tuple.hpp>
+
+typedef boost::tuple<Context*, Context*> arg_type;
+
+void on_complete(void *completion, void *_arg) {
+ arg_type *arg = static_cast<arg_type*>(_arg);
+ librbd::RBD::AioCompletion *comp =
+ static_cast<librbd::RBD::AioCompletion *>(completion);
+ ssize_t r = comp->get_return_value();
+ assert(r >= 0);
+ arg->get<0>()->complete(0);
+ if (arg->get<1>())
+ arg->get<1>()->complete(0);
+ comp->release();
+ delete arg;
+}
+
+void RBDBackend::write(
+ const string &oid,
+ uint64_t offset,
+ const bufferlist &bl,
+ Context *on_write_applied,
+ Context *on_commit)
+{
+ bufferlist &bl_non_const = const_cast<bufferlist&>(bl);
+ ceph::shared_ptr<librbd::Image> image = (*m_images)[oid];
+ void *arg = static_cast<void *>(new arg_type(on_commit, on_write_applied));
+ librbd::RBD::AioCompletion *completion =
+ new librbd::RBD::AioCompletion(arg, on_complete);
+ int r = image->aio_write(offset, (size_t) bl_non_const.length(),
+ bl_non_const, completion);
+ assert(r >= 0);
+}
+
+void RBDBackend::read(
+ const string &oid,
+ uint64_t offset,
+ uint64_t length,
+ bufferlist *bl,
+ Context *on_read_complete)
+{
+ ceph::shared_ptr<librbd::Image> image = (*m_images)[oid];
+ void *arg = static_cast<void *>(new arg_type(on_read_complete, NULL));
+ librbd::RBD::AioCompletion *completion =
+ new librbd::RBD::AioCompletion(arg, on_complete);
+ int r = image->aio_read(offset, (size_t) length, *bl, completion);
+ assert(r >= 0);
+}