stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8065764: javax/management/monitor/CounterMonitorTest.java hangs

Browse Source 
Reviewed-by: jbachorik, dfuchs
This commit is contained in:
Shanliang Jiang 2014-12-03 11:38:56 +01:00
parent 792bc020b9
commit 31af33c0e2
1 changed files with 34 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
jdk/test/javax/management/monitor/CounterMonitorTest.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2004, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -26,7 +26,7 @@
* @bug 4981829
* @summary Test that the counter monitor, when running in difference mode,
* emits a notification every time the threshold is exceeded.
* @author Luis-Miguel Alventosa
* @author Luis-Miguel Alventosa, Shanliang JIANG
* @run clean CounterMonitorTest
* @run build CounterMonitorTest
* @run main CounterMonitorTest
@ -50,23 +50,31 @@ public class CounterMonitorTest implements NotificationListener {
private boolean notifyFlag = true;
// granularity period
private int granularityperiod = 500;
private int granularityperiod = 10;
// counter values
private int[] values = new int[] {4, 6, 9, 11};
// derived gauge
private volatile int derivedGauge = 2;
// flag to notify that a message has been received
private volatile boolean messageReceived = false;
private volatile Object observedValue = null;
// MBean class
public class StdObservedObject implements StdObservedObjectMBean {
public Object getNbObjects() {
echo(">>> StdObservedObject.getNbObjects: " + count);
synchronized(CounterMonitorTest.class) {
observedValue = count;
CounterMonitorTest.class.notifyAll();
}
return count;
}
public void setNbObjects(Object n) {
echo(">>> StdObservedObject.setNbObjects: " + n);
count = n;
}
private Object count= null;
private volatile Object count= null;
}
// MBean interface
@ -166,18 +174,18 @@ public class CounterMonitorTest implements NotificationListener {
Attribute attrib = new Attribute("NbObjects", data);
server.setAttribute(stdObsObjName, attrib);
// Wait for granularity period (multiplied by 2 for sure)
//
Thread.sleep(granularityperiod * 2);
waitObservation(data);
// Loop through the values
//
for (int i = 0; i < values.length; i++) {
data = new Integer(values[i]);
echo(">>> Set data = " + data.intValue());
while (derivedGauge++ < 10) {
System.out.print(">>> Set data from " + data.intValue());
data = new Integer(data.intValue() + derivedGauge);
echo(" to " + data.intValue());
attrib = new Attribute("NbObjects", data);
server.setAttribute(stdObsObjName, attrib);
waitObservation(data);
echo("\tdoWait in Counter Monitor");
doWait();
@ -214,6 +222,20 @@ public class CounterMonitorTest implements NotificationListener {
}
}
private void waitObservation(Object value) {
synchronized (CounterMonitorTest.class) {
while (value != observedValue) {
try {
CounterMonitorTest.class.wait();
} catch (InterruptedException e) {
System.err.println("Got unexpected exception: " + e);
e.printStackTrace();
break;
}
}
}
}
/*
* Print message
*/