Thumbnailer preview = new Thumbnailer(logger, conn, listManager, thumbnailRunner);
thumbGenerators.add(preview);
if (preview.mutex.tryLock()) {
logger.log(logger.EXTREME, "Loading thumbnail for " +guid);
preview.loadContent(guid, html, zoom);
}
logger.log(logger.HIGH, "Exiting thumnailHTMLReady()");
}