/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.procedure2;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
/**
* Basic ProcedureEvent that contains an "object", which can be a description or a reference to the
* resource to wait on, and a queue for suspended procedures.
* Access to suspended procedures queue is 'synchronized' on the event itself.
*/
@InterfaceAudience.Private
public class ProcedureEvent<T> {
private final T object;
private boolean ready = false;
private ProcedureDeque suspendedProcedures = new ProcedureDeque();
public ProcedureEvent(final T object) {
this.object = object;
}
public synchronized boolean isReady() {
return ready;
}
synchronized void setReady(final boolean isReady) {
this.ready = isReady;
}
public ProcedureDeque getSuspendedProcedures() {
return suspendedProcedures;
}
@Override
public String toString() {
return getClass().getSimpleName() + " for " + object + ", ready=" + isReady() +
", suspended procedures count=" + getSuspendedProcedures().size();
}
}