+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "librbd/operation/Request.h"
-#include "common/dout.h"
-#include "common/errno.h"
-#include "common/WorkQueue.h"
-#include "librbd/ImageCtx.h"
-
-#define dout_subsys ceph_subsys_rbd
-#undef dout_prefix
-#define dout_prefix *_dout << "librbd::Request: "
-
-namespace librbd {
-namespace operation {
-
-template <typename I>
-Request<I>::Request(I &image_ctx, Context *on_finish, uint64_t journal_op_tid)
- : AsyncRequest<I>(image_ctx, on_finish), m_op_tid(journal_op_tid) {
-}
-
-template <typename I>
-void Request<I>::send() {
- I &image_ctx = this->m_image_ctx;
- assert(image_ctx.owner_lock.is_locked());
-
- // automatically create the event if we don't need to worry
- // about affecting concurrent IO ops
- if (can_affect_io() || !append_op_event()) {
- send_op();
- }
-}
-
-template <typename I>
-Context *Request<I>::create_context_finisher(int r) {
- // automatically commit the event if required (delete after commit)
- if (m_appended_op_event && !m_committed_op_event &&
- commit_op_event(r)) {
- return nullptr;
- }
-
- I &image_ctx = this->m_image_ctx;
- CephContext *cct = image_ctx.cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
- return util::create_context_callback<Request<I>, &Request<I>::finish>(this);
-}
-
-template <typename I>
-void Request<I>::finish_and_destroy(int r) {
- I &image_ctx = this->m_image_ctx;
- CephContext *cct = image_ctx.cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- // automatically commit the event if required (delete after commit)
- if (m_appended_op_event && !m_committed_op_event &&
- commit_op_event(r)) {
- return;
- }
-
- AsyncRequest<I>::finish_and_destroy(r);
-}
-
-template <typename I>
-void Request<I>::finish(int r) {
- I &image_ctx = this->m_image_ctx;
- CephContext *cct = image_ctx.cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- assert(!m_appended_op_event || m_committed_op_event);
- AsyncRequest<I>::finish(r);
-}
-
-template <typename I>
-bool Request<I>::append_op_event() {
- I &image_ctx = this->m_image_ctx;
-
- assert(image_ctx.owner_lock.is_locked());
- RWLock::RLocker snap_locker(image_ctx.snap_lock);
- if (image_ctx.journal != nullptr &&
- image_ctx.journal->is_journal_appending()) {
- append_op_event(util::create_context_callback<
- Request<I>, &Request<I>::handle_op_event_safe>(this));
- return true;
- }
- return false;
-}
-
-template <typename I>
-bool Request<I>::commit_op_event(int r) {
- I &image_ctx = this->m_image_ctx;
- RWLock::RLocker snap_locker(image_ctx.snap_lock);
-
- if (!m_appended_op_event) {
- return false;
- }
-
- assert(m_op_tid != 0);
- assert(!m_committed_op_event);
- m_committed_op_event = true;
-
- if (image_ctx.journal != nullptr &&
- image_ctx.journal->is_journal_appending()) {
- CephContext *cct = image_ctx.cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- // ops will be canceled / completed before closing journal
- assert(image_ctx.journal->is_journal_ready());
- image_ctx.journal->commit_op_event(m_op_tid, r,
- new C_CommitOpEvent(this, r));
- return true;
- }
- return false;
-}
-
-template <typename I>
-void Request<I>::handle_commit_op_event(int r, int original_ret_val) {
- I &image_ctx = this->m_image_ctx;
- CephContext *cct = image_ctx.cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- if (r < 0) {
- lderr(cct) << "failed to commit op event to journal: " << cpp_strerror(r)
- << dendl;
- }
- if (original_ret_val < 0) {
- r = original_ret_val;
- }
- finish(r);
-}
-
-template <typename I>
-void Request<I>::replay_op_ready(Context *on_safe) {
- I &image_ctx = this->m_image_ctx;
- assert(image_ctx.owner_lock.is_locked());
- assert(image_ctx.snap_lock.is_locked());
- assert(m_op_tid != 0);
-
- m_appended_op_event = true;
- image_ctx.journal->replay_op_ready(
- m_op_tid, util::create_async_context_callback(image_ctx, on_safe));
-}
-
-template <typename I>
-void Request<I>::append_op_event(Context *on_safe) {
- I &image_ctx = this->m_image_ctx;
- assert(image_ctx.owner_lock.is_locked());
- assert(image_ctx.snap_lock.is_locked());
-
- CephContext *cct = image_ctx.cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_op_tid = image_ctx.journal->allocate_op_tid();
- image_ctx.journal->append_op_event(
- m_op_tid, journal::EventEntry{create_event(m_op_tid)},
- new C_AppendOpEvent(this, on_safe));
-}
-
-template <typename I>
-void Request<I>::handle_op_event_safe(int r) {
- I &image_ctx = this->m_image_ctx;
- CephContext *cct = image_ctx.cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- if (r < 0) {
- lderr(cct) << "failed to commit op event to journal: " << cpp_strerror(r)
- << dendl;
- this->finish(r);
- delete this;
- } else {
- assert(!can_affect_io());
-
- // haven't started the request state machine yet
- RWLock::RLocker owner_locker(image_ctx.owner_lock);
- send_op();
- }
-}
-
-} // namespace operation
-} // namespace librbd
-
-#ifndef TEST_F
-template class librbd::operation::Request<librbd::ImageCtx>;
-#endif