StackTraceMonitorProvider.java revision a395dd575518d9e5280fc5d5d5ef47c61b174647
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Copyright 2006-2008 Sun Microsystems, Inc.
*/
/**
* This class defines a Directory Server monitor provider that can be used to
* obtain a stack trace from all server threads that are currently defined in
* the JVM.
*/
public class StackTraceMonitorProvider
{
/**
* Initializes this monitor provider.
*/
public StackTraceMonitorProvider()
{
super("Stack Trace Monitor Provider");
// No initialization should be performed here.
}
/**
* {@inheritDoc}
*/
public void initializeMonitorProvider(
{
// No initialization is required.
}
/**
* Retrieves the name of this monitor provider. It should be unique among all
* monitor providers, including all instances of the same monitor provider.
*
* @return The name of this monitor provider.
*/
public String getMonitorInstanceName()
{
return "JVM Stack Trace";
}
/**
* Retrieves the length of time in milliseconds that should elapse between
* calls to the <CODE>updateMonitorData()</CODE> method. A negative or zero
* return value indicates that the <CODE>updateMonitorData()</CODE> method
* should not be periodically invoked.
*
* @return The length of time in milliseconds that should elapse between
* calls to the <CODE>updateMonitorData()</CODE> method.
*/
public long getUpdateInterval()
{
// This monitor does not need to run periodically.
return 0;
}
/**
* Performs any processing periodic processing that may be desired to update
* the information associated with this monitor. Note that best-effort
* attempts will be made to ensure that calls to this method come
* <CODE>getUpdateInterval()</CODE> milliseconds apart, but no guarantees will
* be made.
*/
public void updateMonitorData()
{
// This monitor does not need to run periodically.
return;
}
/**
* Retrieves a set of attributes containing monitor data that should be
* returned to the client if the corresponding monitor entry is requested.
*
* @return A set of attributes containing monitor data that should be
* returned to the client if the corresponding monitor entry is
* requested.
*/
{
// Re-arrange all of the elements by thread ID so that there is some logical
// order.
{
}
{
// Create an attribute for the stack trace.
if (stackElements != null)
{
{
buffer = new StringBuilder();
if (stackElements[j].isNativeMethod())
{
}
else
{
}
}
}
}
return attrs;
}
}