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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/librbd/exclusive_lock/PreAcquireRequest.cc
parentInitial commit. (diff)
downloadceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.tar.xz
ceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.zip
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/librbd/exclusive_lock/PreAcquireRequest.cc')
-rw-r--r--src/librbd/exclusive_lock/PreAcquireRequest.cc94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/librbd/exclusive_lock/PreAcquireRequest.cc b/src/librbd/exclusive_lock/PreAcquireRequest.cc
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/exclusive_lock/PreAcquireRequest.h"
+#include "librbd/Utils.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/ImageWatcher.h"
+#include "librbd/ImageState.h"
+
+#define dout_subsys ceph_subsys_rbd
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::exclusive_lock::PreAcquireRequest: " \
+ << this << " " << __func__ << ": "
+
+namespace librbd {
+namespace exclusive_lock {
+
+using util::create_async_context_callback;
+using util::create_context_callback;
+using util::create_rados_callback;
+
+template <typename I>
+PreAcquireRequest<I>* PreAcquireRequest<I>::create(I &image_ctx,
+ Context *on_finish) {
+ return new PreAcquireRequest(image_ctx, on_finish);
+}
+
+template <typename I>
+PreAcquireRequest<I>::PreAcquireRequest(I &image_ctx, Context *on_finish)
+ : m_image_ctx(image_ctx),
+ m_on_finish(create_async_context_callback(image_ctx, on_finish)),
+ m_error_result(0) {
+}
+
+template <typename I>
+PreAcquireRequest<I>::~PreAcquireRequest() {
+}
+
+template <typename I>
+void PreAcquireRequest<I>::send() {
+ send_prepare_lock();
+}
+
+template <typename I>
+void PreAcquireRequest<I>::send_prepare_lock() {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << dendl;
+
+ // acquire the lock if the image is not busy performing other actions
+ Context *ctx = create_context_callback<
+ PreAcquireRequest<I>, &PreAcquireRequest<I>::handle_prepare_lock>(this);
+ m_image_ctx.state->prepare_lock(ctx);
+}
+
+template <typename I>
+void PreAcquireRequest<I>::handle_prepare_lock(int r) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << "r=" << r << dendl;
+
+ send_flush_notifies();
+}
+
+template <typename I>
+void PreAcquireRequest<I>::send_flush_notifies() {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << dendl;
+
+ using klass = PreAcquireRequest<I>;
+ Context *ctx = create_context_callback<klass, &klass::handle_flush_notifies>(
+ this);
+ m_image_ctx.image_watcher->flush(ctx);
+}
+
+template <typename I>
+void PreAcquireRequest<I>::handle_flush_notifies(int r) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << dendl;
+
+ ceph_assert(r == 0);
+ finish();
+}
+
+template <typename I>
+void PreAcquireRequest<I>::finish() {
+ m_on_finish->complete(m_error_result);
+ delete this;
+}
+
+} // namespace exclusive_lock
+} // namespace librbd
+
+template class librbd::exclusive_lock::PreAcquireRequest<librbd::ImageCtx>;