| /** |
| * 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. |
| **/ |
| |
| #ifndef COMMON_CANCELTRACKER_H |
| #define COMMON_CANCELTRACKER_H |
| |
| #include <memory> |
| #include <atomic> |
| |
| namespace hdfs { |
| |
| class CancelTracker : public std::enable_shared_from_this<CancelTracker> { |
| public: |
| CancelTracker(); |
| static std::shared_ptr<CancelTracker> New(); |
| void set_canceled(); |
| bool is_canceled(); |
| private: |
| std::atomic_bool canceled_; |
| }; |
| |
| typedef std::shared_ptr<CancelTracker> CancelHandle; |
| |
| } |
| #endif |
