| /* |
| * 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 _LOG4CXX_HELPERS_FILEWATCHDOG_H |
| #define _LOG4CXX_HELPERS_FILEWATCHDOG_H |
| |
| #include <log4cxx/logstring.h> |
| #include <time.h> |
| #include <log4cxx/helpers/pool.h> |
| #include <log4cxx/file.h> |
| #include <atomic> |
| #include <thread> |
| #include <condition_variable> |
| |
| namespace log4cxx |
| { |
| namespace helpers |
| { |
| |
| /** |
| Check every now and then that a certain file has not changed. If it |
| has, then call the #doOnChange method. |
| */ |
| class LOG4CXX_EXPORT FileWatchdog |
| { |
| public: |
| virtual ~FileWatchdog(); |
| /** |
| The default delay between every file modification check, set to 60 |
| seconds. */ |
| static long DEFAULT_DELAY /*= 60000*/; |
| |
| protected: |
| /** |
| The name of the file to observe for changes. |
| */ |
| File file; |
| |
| /** |
| The delay to observe between every check. |
| By default set DEFAULT_DELAY.*/ |
| long delay; |
| log4cxx_time_t lastModif; |
| bool warnedAlready; |
| volatile int interrupted; |
| |
| protected: |
| FileWatchdog(const File& filename); |
| virtual void doOnChange() = 0; |
| void checkAndConfigure(); |
| |
| public: |
| /** |
| Set the delay to observe between each check of the file changes. |
| */ |
| void setDelay(long delay1) |
| { |
| this->delay = delay1; |
| } |
| |
| void start(); |
| |
| private: |
| void run(); |
| bool is_interrupted(); |
| Pool pool; |
| std::thread thread; |
| std::condition_variable interrupt; |
| std::mutex interrupt_mutex; |
| |
| FileWatchdog(const FileWatchdog&); |
| FileWatchdog& operator=(const FileWatchdog&); |
| |
| }; |
| } // namespace helpers |
| } // namespace log4cxx |
| |
| |
| #endif // _LOG4CXX_HELPERS_FILEWATCHDOG_H |