| /* |
| * Copyright 2015 Twitter, Inc. |
| * |
| * Licensed 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. |
| */ |
| |
| #ifndef SRC_CPP_SVCS_STMGR_SRC_UTIL_XOR_MANAGER_H_ |
| #define SRC_CPP_SVCS_STMGR_SRC_UTIL_XOR_MANAGER_H_ |
| |
| #include <unordered_map> |
| #include <vector> |
| #include "proto/messages.h" |
| #include "basics/basics.h" |
| #include "network/network.h" |
| |
| namespace heron { |
| namespace stmgr { |
| |
| class RotatingMap; |
| |
| class XorManager { |
| public: |
| XorManager(EventLoop* eventLoop, sp_int32 _timeout, const std::vector<sp_int32>& _task_ids); |
| virtual ~XorManager(); |
| |
| // Create a new entry for the tuple. |
| // _task_id is the task id where the tuple |
| // originated from. |
| // _key is the tuple key |
| // _value is the tuple key as seen by the |
| // destination |
| void create(sp_int32 _task_id, sp_int64 _key, sp_int64 _value); |
| |
| // Add one more entry to the tuple tree |
| // _task_id is the task id where the tuple |
| // originated from. |
| // _key is the tuple key |
| // _value is the tuple key as seen by the |
| // destination |
| // We return true if the xor value is now zerod out |
| // Else return false |
| bool anchor(sp_int32 _task_id, sp_int64 _key, sp_int64 _value); |
| |
| // remove this tuple key from our structure. |
| // return true if this key was found. else false |
| bool remove(sp_int32 _task_id, sp_int64 _key); |
| |
| private: |
| void rotate(EventLoopImpl::Status _status); |
| |
| EventLoop* eventLoop_; |
| sp_int32 timeout_; |
| |
| // map of task_id to a RotatingMap |
| std::unordered_map<sp_int32, RotatingMap*> tasks_; |
| |
| // Configs to be read |
| sp_int32 n_buckets_; |
| }; |
| |
| } // namespace stmgr |
| } // namespace heron |
| |
| #endif // SRC_CPP_SVCS_STMGR_SRC_UTIL_XOR_MANAGER_H_ |