protected void handleSignalRequest(Request req) {
Lock lock = _getLock(req.lock_name);
lock.lock();
try {
ServerLock server_lock = server_locks.get(req.lock_name);
if (server_lock != null) server_lock.handleRequest(req);
else
log.error(
"Condition signal was received but lock was not created. Couldn't notify anyone.");
} finally {
lock.unlock();
}
}
protected void handleDeleteLockRequest(String lock_name) {
Lock lock = _getLock(lock_name);
lock.lock();
try {
ServerLock server_lock = server_locks.get(lock_name);
if (server_lock == null) return;
synchronized (server_lock.condition) {
if (server_lock.condition.queue.isEmpty()) server_locks.remove(lock_name);
else server_lock.current_owner = null;
}
} finally {
lock.unlock();
}
}
protected void handleView(View view) {
this.view = view;
if (log.isDebugEnabled()) log.debug("view=" + view);
List<Address> members = view.getMembers();
for (Map.Entry<String, ServerLock> entry : server_locks.entrySet()) {
String lock_name = entry.getKey();
ServerLock server_lock = entry.getValue();
Lock lock = _getLock(lock_name);
lock.lock();
try {
server_lock.handleView(members);
if (server_lock.isEmpty()
&& server_lock.current_owner == null
&& server_lock.condition.queue.isEmpty()) server_locks.remove(lock_name);
} finally {
lock.unlock();
}
}
}
protected void handleLockRequest(Request req) {
Lock lock = _getLock(req.lock_name);
lock.lock();
try {
ServerLock server_lock = server_locks.get(req.lock_name);
if (server_lock == null) {
server_lock = new ServerLock(req.lock_name);
ServerLock tmp = server_locks.putIfAbsent(req.lock_name, server_lock);
if (tmp != null) server_lock = tmp;
else {
notifyLockCreated(req.lock_name);
}
}
server_lock.handleRequest(req);
if (server_lock.isEmpty()
&& server_lock.current_owner == null
&& server_lock.condition.queue.isEmpty()) {
server_locks.remove(req.lock_name);
}
} finally {
lock.unlock();
}
}
