[89] | 1 | /*
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more
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| 3 | * contributor license agreements. See the NOTICE file distributed with
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| 4 | * this work for additional information regarding copyright ownership.
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0
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| 6 | * (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 |
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| 18 | #ifndef _LOG4CXX_HELPERS_FILEWATCHDOG_H
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| 19 | #define _LOG4CXX_HELPERS_FILEWATCHDOG_H
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| 20 |
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| 21 | #include <log4cxx/logstring.h>
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| 22 | #include <time.h>
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| 23 | #include <log4cxx/helpers/pool.h>
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| 24 | #include <log4cxx/helpers/thread.h>
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| 25 | #include <log4cxx/file.h>
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| 26 |
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| 27 | namespace log4cxx
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| 28 | {
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| 29 | namespace helpers
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| 30 | {
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| 31 |
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| 32 | /**
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| 33 | Check every now and then that a certain file has not changed. If it
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| 34 | has, then call the #doOnChange method.
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| 35 | */
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| 36 | class LOG4CXX_EXPORT FileWatchdog
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| 37 | {
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| 38 | public:
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| 39 | virtual ~FileWatchdog();
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| 40 | /**
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| 41 | The default delay between every file modification check, set to 60
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| 42 | seconds. */
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| 43 | static long DEFAULT_DELAY /*= 60000*/;
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| 44 |
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| 45 | protected:
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| 46 | /**
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| 47 | The name of the file to observe for changes.
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| 48 | */
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| 49 | File file;
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| 50 |
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| 51 | /**
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| 52 | The delay to observe between every check.
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| 53 | By default set DEFAULT_DELAY.*/
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| 54 | long delay;
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| 55 | log4cxx_time_t lastModif;
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| 56 | bool warnedAlready;
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| 57 | volatile unsigned int interrupted;
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| 58 |
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| 59 | protected:
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| 60 | FileWatchdog(const File& filename);
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| 61 | virtual void doOnChange() = 0;
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| 62 | void checkAndConfigure();
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| 63 |
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| 64 | public:
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| 65 | /**
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| 66 | Set the delay to observe between each check of the file changes.
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| 67 | */
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| 68 | void setDelay(long delay1)
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| 69 | { this->delay = delay1; }
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| 70 |
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| 71 | void start();
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| 72 |
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| 73 | private:
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| 74 | static void* LOG4CXX_THREAD_FUNC run(apr_thread_t* thread, void* data);
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| 75 | Pool pool;
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| 76 | Thread thread;
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| 77 |
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| 78 | FileWatchdog(const FileWatchdog&);
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| 79 | FileWatchdog& operator=(const FileWatchdog&);
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| 80 |
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| 81 | };
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| 82 | } // namespace helpers
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| 83 | } // namespace log4cxx
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| 84 |
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| 85 |
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| 86 | #endif // _LOG4CXX_HELPERS_FILEWATCHDOG_H
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