Implementing a Distributed Peer to Peer File Sharing System ... - Umbc

CHEWBACCA Baker, Fink, Trimm, Whisman
}
/**
* Lock the cloud - if local node has the token, then
* locking proceeds; else it is queried for
*/
public void lock_cloud() {
}
if (token==null)
pass_token(this);
is_locked=true;
public void unlock_cloud() {
}
/**
is_locked=false;
is_locked.notify // wake any waiting threads
* Updates forward fingers to notify them that "nhid"
* is the new holder of the token. Forward fingers are
* updated to maintain the set CN of correct nodes;
* by fixing the forward fingers, it ensures that any
* node querying for a token will eventually land on the
* proper path toward the token.
*/
public void update_forward_token_fingers(int nhid) {
// recursively update forward fingers
token_finger = closest_preceding_finger_index(nhid);
if (token_finger>0)
finger[token_finger].node.update_forward_token_fingers(nhid);
}
/**
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