The version of Apache log4j used by SoundHelix.
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PeriodicJob.java
/*
* Copyright 1999,2004 The Apache Software Foundation.
*
* Licensed 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.log4j.scheduler;
import java.util.Vector;
class PeriodicJob extends CountingJob {
long period;
Vector desiredTimeVector;
Vector actualExecutionTime;
PeriodicJob(int id, long desiredExecutionTime, long period) {
super(id, desiredExecutionTime);
this.period = period;
actualExecutionTime = new Vector();
desiredTimeVector = new Vector();
desiredTimeVector.add(new Long(desiredExecutionTime));
}
public void execute() {
if (deleted) {
throw new IllegalStateException(id + "has already been deleted");
}
long now = System.currentTimeMillis();
count++;
//System.out.println(
//id + " - execute called: count" + count + ", now=" + now);
long lastDesiredTime =
((Long) desiredTimeVector.lastElement()).longValue();
desiredTimeVector.add(new Long(lastDesiredTime + period));
actualExecutionTime.add(new Long(now));
if (now < lastDesiredTime) {
throw new IllegalStateException("Job executed too early.");
} else if ((now - lastDesiredTime) > SchedulerTest.TOLERATED_GAP) {
String msg =
"Job id " + id + " executed " + (now - lastDesiredTime) + " too late ";
System.out.println(msg);
throw new IllegalStateException(msg);
}
}
void sanityCheck(long currentTime) {
System.out.println("sanity check on job " + id);
if (!deleted) {
int expectedNumberOfExecutions =
(int) ((currentTime - desiredTime) / period);
// allow for 15% error margin
if ((actualExecutionTime.size()*1.25) < expectedNumberOfExecutions) {
throw new IllegalStateException(
"Too few executions. Was " + actualExecutionTime.size()
+ " expected " + expectedNumberOfExecutions + " period="+period);
}
}
for (int i = 0; i < actualExecutionTime.size(); i++) {
long actual = ((Long) actualExecutionTime.get(i)).longValue();
long desired = ((Long) desiredTimeVector.get(i)).longValue();
if (actual < desired) {
throw new IllegalStateException("Job executed too early.");
} else if ((actual - desired) > (SchedulerTest.TOLERATED_GAP * (i + 1))) {
String msg =
"Job id " + id + " executed " + (actual - desired) + " too late ";
System.out.println(msg);
throw new IllegalStateException(msg);
}
}
}
}