@Override
public synchronized boolean reset(PathWatchKey pathWatchKey) {
if (!pathWatchKey.isValid()) return false;
if (pathWatchKey.hasPendingWatchEvents()) pendingWatchKeys.add(pathWatchKey);
else signalledWatchKeys.remove(pathWatchKey);
return true;
}
private boolean cancelImpl(PathWatchKey pathWatchKey, boolean removeKey) {
PathImpl pathImpl = (PathImpl) pathWatchKey.getPath();
String pathString = pathImpl.getFile().getPath();
Integer dirfdInteger = dirs.get(pathString);
// check if the key that was passed in is ours
if (dirfdInteger == null) return false; // FIXME: should throw an exception in this case
PathWatchKey key = keys.get(dirfdInteger);
if (key != pathWatchKey) return false; // FIXME: should throw an exception in this case
boolean eventAdded = false;
if ((key.getFlags() & FLAG_FILTER_KEY_INVALID) != 0) {
key.addWatchEvent(new VoidWatchEvent(ExtendedWatchEventKind.KEY_INVALID));
eventAdded = true;
}
// if we get here, the key is ours, so we'll invalidate it and
// remove it now.
int dirfd = dirfdInteger.intValue();
kevent[] changelist = new kevent[] {new kevent()};
changelist[0].set_ident(dirfd);
changelist[0].set_filter(EVFILT_VNODE);
changelist[0].set_flags(EV_DELETE);
int result = kevent(kqueuefd, changelist, null, null);
assert (result == 0);
key.invalidate();
if ((key.getFlags() & FLAG_FILTER_ENTRY_MODIFY) != 0) --numKeysRequiringPolling;
if (removeKey) {
keys.remove(dirfdInteger);
}
dirs.remove(pathString);
return eventAdded;
}
