001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 * $Id$
020 *
021 */
022package org.nuxeo.ecm.core.convert.cache;
023
024import java.util.concurrent.TimeUnit;
025
026import org.apache.commons.logging.Log;
027import org.apache.commons.logging.LogFactory;
028import org.nuxeo.ecm.core.convert.service.ConversionServiceImpl;
029
030/**
031 * Task for GC dedicated Thread.
032 *
033 * @author tiry
034 */
035public class GCTask implements Runnable {
036
037    public boolean GCEnabled = true;
038
039    private static final Log log = LogFactory.getLog(GCTask.class);
040
041    @Override
042    public void run() {
043        log.debug("starting GC thread");
044        while (GCEnabled) {
045            ConversionCacheGCManager.gcIfNeeded();
046            try {
047                long gcInterval = ConversionServiceImpl.getGCIntervalInMinutes();
048
049                if (gcInterval < 0) {
050                    // for tests
051                    log.debug("GC sleeps for " + -gcInterval);
052                    Thread.sleep(-gcInterval);
053                } else {
054                    log.debug("GC sleeps for " + gcInterval * 60 * 1000);
055                    // GC Interval is stored in minutes
056                    Thread.sleep(TimeUnit.MILLISECONDS.convert(gcInterval, TimeUnit.MINUTES));
057                }
058            } catch (InterruptedException e) {
059                GCEnabled = false;
060                log.info("GCThread bruttaly interupted");
061                Thread.currentThread().interrupt();
062            }
063        }
064    }
065
066}