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/*
Derby - Class org.apache.derbyTesting.unitTests.services.T_Serviceable
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.derbyTesting.unitTests.services;
import org.apache.derbyTesting.unitTests.harness.T_Generic;
import org.apache.derbyTesting.unitTests.harness.T_Fail;
import org.apache.derby.iapi.services.context.Context;
import org.apache.derby.iapi.services.context.ContextManager;
import org.apache.derby.iapi.services.monitor.Monitor;
import org.apache.derby.iapi.error.StandardException;
import org.apache.derby.iapi.services.daemon.*;
/**
This test implements serviceable for testing. To facility testing, when
this object is being serviced, it will synchronize on itself and notity all
waiters. Test driver may wait on this object and check timesServiced to
make sure the background daemon has run.
*/
public class T_Serviceable implements Serviceable
{
// synchronized on this to look at the number
// of times this object has been serviced
protected int timesServiced;
// constant for checking
protected final int timesRequeue;
protected final boolean onDemandOnly;
protected final boolean subscribed;
// use this to unsubscribe
protected int clientNumber;
// test enqueueing, t = number of times to requeue
public T_Serviceable(int t)
{
timesServiced = 0;
timesRequeue = t;
onDemandOnly = false; // not looked at
subscribed = false;
clientNumber = -1;
}
// test subscription
public T_Serviceable(boolean onDemandOnly)
{
timesServiced = 0;
timesRequeue = 0; // not looked at
this.onDemandOnly = onDemandOnly;
subscribed = true;
}
protected void setClientNumber(int n)
{
clientNumber = n;
}
protected int getClientNumber()
{
return clientNumber;
}
/*
* Serviceable interface
*/
public synchronized int performWork(ContextManager context)
{
context.toString(); // make sure context manager is not null;
timesServiced++;
notifyAll(); // notify anyone waiting for me to be serviced
if (!subscribed && timesRequeue > timesServiced)
return Serviceable.REQUEUE;
else
return Serviceable.DONE;
}
public boolean serviceASAP()
{
return true;
}
// @return true, if this work needs to be done on a user thread immediately
public boolean serviceImmediately()
{
return false;
}
/*
* test utilities
*/
protected synchronized void t_wait(int n)
{
try
{
while (timesServiced < n)
wait();
}
catch (InterruptedException ie) {}
}
protected synchronized void t_check(int n) throws T_Fail
{
if (timesServiced != n)
throw T_Fail.testFailMsg("Expect to be serviced " + n + " times, instead serviced " + timesServiced);
}
}
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