@Override
public void purge(Executor threadPool, final PurgeListener task) {
long now = timeService.wallClockTime();
List<KeyValuePair<Object, FileEntry>> entriesToPurge =
new ArrayList<KeyValuePair<Object, FileEntry>>();
synchronized (entries) {
for (Iterator<Map.Entry<K, FileEntry>> it = entries.entrySet().iterator(); it.hasNext(); ) {
Map.Entry<K, FileEntry> next = it.next();
FileEntry fe = next.getValue();
if (fe.isExpired(now)) {
it.remove();
entriesToPurge.add(new KeyValuePair<Object, FileEntry>(next.getKey(), fe));
}
}
}
resizeLock.readLock().lock();
try {
for (Iterator<KeyValuePair<Object, FileEntry>> it = entriesToPurge.iterator();
it.hasNext(); ) {
KeyValuePair<Object, FileEntry> next = it.next();
FileEntry fe = next.getValue();
if (fe.isExpired(now)) {
it.remove();
try {
free(fe);
} catch (Exception e) {
throw new PersistenceException(e);
}
if (task != null) task.entryPurged(next.getKey());
}
}
// Disk space optimizations
synchronized (freeList) {
processFreeEntries();
}
} finally {
resizeLock.readLock().unlock();
}
}
