/*
* #%L
* BSD implementations of Bio-Formats readers and writers
* %%
* Copyright (C) 2005 - 2015 Open Microscopy Environment:
* - Board of Regents of the University of Wisconsin-Madison
* - Glencoe Software, Inc.
* - University of Dundee
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package loci.formats.cache;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Thread responsible for updating the cache
* (loading and dropping planes) in the background.
*/
public class CacheUpdater extends Thread {
// -- Constants --
private static final Logger LOGGER =
LoggerFactory.getLogger(CacheUpdater.class);
// -- Fields --
private Cache cache;
private boolean quit;
// -- Constructors --
public CacheUpdater(Cache cache) {
super("Bio-Formats-Cache-Updater");
setPriority(Thread.MIN_PRIORITY);
this.cache = cache;
quit = false;
}
// -- CacheUpdater API methods --
public void quit() {
quit = true;
// NB: Must wait for thread to die; Bio-Formats is not thread-safe, so
// it would be bad for more than one CacheUpdater thread to try to use the
// same IFormatReader at the same time.
try {
join();
}
catch (InterruptedException exc) {
LOGGER.info("Thread interrupted", exc);
}
}
// -- Thread API methods --
@Override
public void run() {
int length = 0;
try {
length = cache.getStrategy().getLoadList(cache.getCurrentPos()).length;
for (int i=0; i<length; i++) {
if (quit) break;
cache.recache(i);
}
}
catch (CacheException e) {
LOGGER.info("", e);
}
}
}