1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #include "librbd/exclusive_lock/PreAcquireRequest.h"
5 #include "librbd/Utils.h"
6 #include "common/dout.h"
7 #include "common/errno.h"
8 #include "librbd/ImageCtx.h"
9 #include "librbd/ImageWatcher.h"
10 #include "librbd/ImageState.h"
12 #define dout_subsys ceph_subsys_rbd
14 #define dout_prefix *_dout << "librbd::exclusive_lock::PreAcquireRequest: " \
15 << this << " " << __func__ << ": "
18 namespace exclusive_lock
{
20 using util::create_async_context_callback
;
21 using util::create_context_callback
;
22 using util::create_rados_callback
;
25 PreAcquireRequest
<I
>* PreAcquireRequest
<I
>::create(I
&image_ctx
,
27 return new PreAcquireRequest(image_ctx
, on_finish
);
31 PreAcquireRequest
<I
>::PreAcquireRequest(I
&image_ctx
, Context
*on_finish
)
32 : m_image_ctx(image_ctx
),
33 m_on_finish(create_async_context_callback(image_ctx
, on_finish
)),
38 PreAcquireRequest
<I
>::~PreAcquireRequest() {
42 void PreAcquireRequest
<I
>::send() {
47 void PreAcquireRequest
<I
>::send_prepare_lock() {
48 CephContext
*cct
= m_image_ctx
.cct
;
49 ldout(cct
, 10) << dendl
;
51 // acquire the lock if the image is not busy performing other actions
52 Context
*ctx
= create_context_callback
<
53 PreAcquireRequest
<I
>, &PreAcquireRequest
<I
>::handle_prepare_lock
>(this);
54 m_image_ctx
.state
->prepare_lock(ctx
);
58 void PreAcquireRequest
<I
>::handle_prepare_lock(int r
) {
59 CephContext
*cct
= m_image_ctx
.cct
;
60 ldout(cct
, 10) << "r=" << r
<< dendl
;
62 send_flush_notifies();
66 void PreAcquireRequest
<I
>::send_flush_notifies() {
67 CephContext
*cct
= m_image_ctx
.cct
;
68 ldout(cct
, 10) << dendl
;
70 using klass
= PreAcquireRequest
<I
>;
71 Context
*ctx
= create_context_callback
<klass
, &klass::handle_flush_notifies
>(
73 m_image_ctx
.image_watcher
->flush(ctx
);
77 void PreAcquireRequest
<I
>::handle_flush_notifies(int r
) {
78 CephContext
*cct
= m_image_ctx
.cct
;
79 ldout(cct
, 10) << dendl
;
86 void PreAcquireRequest
<I
>::finish() {
87 m_on_finish
->complete(m_error_result
);
91 } // namespace exclusive_lock
94 template class librbd::exclusive_lock::PreAcquireRequest
<librbd::ImageCtx
>;