// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.utils.concurrency;
import org.apache.log4j.Logger;
public class SynchronizationEvent {
protected final static Logger s_logger = Logger.getLogger(SynchronizationEvent.class);
private boolean signalled;
public SynchronizationEvent() {
signalled = false;
}
public SynchronizationEvent(boolean signalled) {
this.signalled = signalled;
}
public void setEvent() {
synchronized(this) {
signalled = true;
notifyAll();
}
}
public void resetEvent() {
synchronized(this) {
signalled = false;
}
}
public boolean waitEvent() throws InterruptedException {
synchronized(this) {
if(signalled)
return true;
while(true) {
try {
wait();
assert(signalled);
return signalled;
} catch (InterruptedException e) {
s_logger.debug("unexpected awaken signal in wait()");
throw e;
}
}
}
}
public boolean waitEvent(long timeOutMiliseconds) throws InterruptedException {
synchronized(this) {
if(signalled)
return true;
try {
wait(timeOutMiliseconds);
return signalled;
} catch (InterruptedException e) {
// TODO, we don't honor time out semantics when the waiting thread is interrupted
s_logger.debug("unexpected awaken signal in wait(...)");
throw e;
}
}
}
public boolean isSignalled() {
synchronized(this) {
return signalled;
}
}
}