| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "TombstoneList.hpp" |
| |
| #include <unordered_set> |
| |
| #include <geode/SystemProperties.hpp> |
| |
| #include "CacheImpl.hpp" |
| #include "MapSegment.hpp" |
| #include "TombstoneEntry.hpp" |
| #include "TombstoneExpiryTask.hpp" |
| |
| namespace apache { |
| namespace geode { |
| namespace client { |
| |
| // TODO. Review this overhead is OK |
| #define SIZEOF_PTR (sizeof(void*)) |
| #define SIZEOF_SHAREDPTR (SIZEOF_PTR + 4) |
| // 3 variables in expiry handler, two variables for ace_reactor expiry, one |
| // pointer to expiry handle |
| #define SIZEOF_EXPIRYHANDLER ((SIZEOF_PTR * 5) + 4) |
| #define SIZEOF_TOMBSTONEENTRY (SIZEOF_PTR + 8 + 8) |
| // one shared ptr for map entry, one sharedPtr for tombstone entry, one |
| // sharedptr for key, one shared ptr for tombstone value, |
| // one ptr for tombstone list, one ptr for mapsegment, one tombstone entry |
| #define SIZEOF_TOMBSTONELISTENTRY \ |
| (SIZEOF_SHAREDPTR * 4 + SIZEOF_PTR * 2 + SIZEOF_TOMBSTONEENTRY) |
| #define SIZEOF_TOMBSTONEOVERHEAD \ |
| (SIZEOF_EXPIRYHANDLER + SIZEOF_TOMBSTONELISTENTRY) |
| |
| ExpiryTask::id_t TombstoneList::add( |
| const std::shared_ptr<MapEntryImpl>& entry) { |
| // This function is not guarded as all functions of this class are called from |
| // MapSegment read TombstoneTImeout from systemProperties. |
| auto tombstone = std::make_shared<TombstoneEntry>(entry); |
| std::shared_ptr<CacheableKey> key; |
| entry->getKeyI(key); |
| |
| auto duration = |
| cache_.getDistributedSystem().getSystemProperties().tombstoneTimeout(); |
| auto& manager = cache_.getExpiryTaskManager(); |
| auto task = |
| std::make_shared<TombstoneExpiryTask>(manager, segment_, tombstone); |
| auto task_id = manager.schedule(std::move(task), duration); |
| tombstone->task_id(task_id); |
| tombstones_[key] = tombstone; |
| |
| auto& perf_stats = cache_.getCachePerfStats(); |
| |
| perf_stats.incTombstoneCount(); |
| perf_stats.incTombstoneSize(key->objectSize() + SIZEOF_TOMBSTONEOVERHEAD); |
| |
| return task_id; |
| } |
| |
| // Reaps the tombstones which have been gc'ed on server. |
| // A map that has identifier for ClientProxyMembershipID as key |
| // and server version of the tombstone with highest version as the |
| // value is passed as paramter |
| void TombstoneList::reap_tombstones(std::map<uint16_t, int64_t>& gcVersions) { |
| // This function is not guarded as all functions of this class are called from |
| // MapSegment |
| std::unordered_set<std::shared_ptr<CacheableKey>, |
| dereference_hash<std::shared_ptr<CacheableKey>>, |
| dereference_equal_to<std::shared_ptr<CacheableKey>>> |
| tobeDeleted; |
| for (const auto& queIter : tombstones_) { |
| auto const& mapIter = gcVersions.find( |
| queIter.second->entry()->getVersionStamp().getMemberId()); |
| |
| if (mapIter == gcVersions.end()) { |
| continue; |
| } |
| |
| auto const& version = (*mapIter).second; |
| if (version >= |
| queIter.second->entry()->getVersionStamp().getRegionVersion()) { |
| tobeDeleted.insert(queIter.first); |
| } |
| } |
| |
| for (const auto& key : tobeDeleted) { |
| segment_.remove_entry(key); |
| } |
| } |
| |
| // Reaps the tombstones whose keys are specified in the hash set . |
| void TombstoneList::reap_tombstones( |
| const std::shared_ptr<CacheableHashSet>& keys) { |
| // This function is not guarded as all functions of this class are called from |
| // MapSegment |
| for (const auto& key : *keys) { |
| segment_.remove_entry(key); |
| } |
| } |
| |
| bool TombstoneList::exists(const std::shared_ptr<CacheableKey>& key) const { |
| return key != nullptr && tombstones_.find(key) != tombstones_.end(); |
| } |
| |
| bool TombstoneList::erase(const std::shared_ptr<CacheableKey>& key, |
| bool cancel_task) { |
| // This function is not guarded as all functions of this class are called from |
| // MapSegment |
| |
| auto&& iter = tombstones_.find(key); |
| if (iter == tombstones_.end()) { |
| return false; |
| } |
| |
| iter->second->invalidate(); |
| |
| if (cancel_task) { |
| cache_.getExpiryTaskManager().cancel(iter->second->task_id()); |
| } |
| |
| auto& perf_stats = cache_.getCachePerfStats(); |
| |
| perf_stats.decTombstoneCount(); |
| perf_stats.decTombstoneSize(key->objectSize() + SIZEOF_TOMBSTONEOVERHEAD); |
| |
| tombstones_.erase(iter); |
| return true; |
| } |
| |
| void TombstoneList::cleanup() { |
| // This function is not guarded as all functions of this class are called from |
| // MapSegment |
| auto& manager = cache_.getExpiryTaskManager(); |
| for (const auto& iter : tombstones_) { |
| manager.cancel(iter.second->task_id()); |
| } |
| } |
| |
| } // namespace client |
| } // namespace geode |
| } // namespace apache |