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/*
* 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.
*/
#define __STDC_CONSTANT_MACROS
#include <log4cxx/logstring.h>
#include <log4cxx/helpers/filewatchdog.h>
#include <log4cxx/helpers/loglog.h>
#include <apr_time.h>
#include <apr_thread_proc.h>
#include <apr_atomic.h>
#include <log4cxx/helpers/transcoder.h>
#include <log4cxx/helpers/exception.h>
using namespace log4cxx;
using namespace log4cxx::helpers;
long FileWatchdog::DEFAULT_DELAY = 60000;
#if APR_HAS_THREADS
FileWatchdog::FileWatchdog(const File& file1)
: file(file1), delay(DEFAULT_DELAY), lastModif(0),
warnedAlready(false), interrupted(0), thread()
{
}
FileWatchdog::~FileWatchdog() {
apr_atomic_set32(&interrupted, 0xFFFF);
try {
thread.interrupt();
thread.join();
} catch(Exception &e) {
}
}
void FileWatchdog::checkAndConfigure()
{
Pool pool1;
if (!file.exists(pool1))
{
if(!warnedAlready)
{
LogLog::debug(((LogString) LOG4CXX_STR("["))
+ file.getPath()
+ LOG4CXX_STR("] does not exist."));
warnedAlready = true;
}
}
else
{
apr_time_t thisMod = file.lastModified(pool1);
if (thisMod > lastModif)
{
lastModif = thisMod;
doOnChange();
warnedAlready = false;
}
}
}
void* APR_THREAD_FUNC FileWatchdog::run(apr_thread_t* /* thread */, void* data) {
FileWatchdog* pThis = (FileWatchdog*) data;
unsigned int interrupted = apr_atomic_read32(&pThis->interrupted);
while(!interrupted)
{
try {
Thread::sleep(pThis->delay);
pThis->checkAndConfigure();
} catch(InterruptedException& ex) {
interrupted = apr_atomic_read32(&pThis->interrupted);
}
}
return NULL;
}
void FileWatchdog::start()
{
checkAndConfigure();
thread.run(run, this);
}
#endif
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