365 lines
13 KiB
Java
365 lines
13 KiB
Java
/*
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* Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.management.snmp.jvminstr;
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// java imports
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//
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import java.io.Serializable;
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import java.lang.management.ThreadMXBean;
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import java.lang.management.ManagementFactory;
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// jmx imports
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//
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import javax.management.MBeanServer;
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import com.sun.jmx.snmp.SnmpString;
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import com.sun.jmx.snmp.SnmpStatusException;
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// jdmk imports
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//
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import com.sun.jmx.snmp.agent.SnmpMib;
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import com.sun.jmx.snmp.SnmpDefinitions;
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import sun.management.snmp.jvmmib.JvmThreadingMBean;
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import sun.management.snmp.jvmmib.EnumJvmThreadCpuTimeMonitoring;
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import sun.management.snmp.jvmmib.EnumJvmThreadContentionMonitoring;
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import sun.management.snmp.util.MibLogger;
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/**
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* The class is used for implementing the "JvmThreading" group.
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*/
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public class JvmThreadingImpl implements JvmThreadingMBean {
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/**
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* Variable for storing the value of "JvmThreadCpuTimeMonitoring".
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*
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* "The state of the Thread CPU Time Monitoring feature.
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* This feature can be:
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*
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* unsupported: The JVM does not support Thread CPU Time Monitoring.
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* enabled : The JVM supports Thread CPU Time Monitoring, and it
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* is enabled.
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* disabled : The JVM supports Thread CPU Time Monitoring, and it
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* is disabled.
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*
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* Only enabled(3) and disabled(4) may be supplied as values to a
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* SET request. unsupported(1) can only be set internally by the
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* agent.
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*
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* See java.lang.management.ThreadMXBean.isThreadCpuTimeSupported(),
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* java.lang.management.ThreadMXBean.isThreadCpuTimeEnabled(),
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* java.lang.management.ThreadMXBean.setThreadCpuTimeEnabled()
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* "
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*
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*/
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final static EnumJvmThreadCpuTimeMonitoring
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JvmThreadCpuTimeMonitoringUnsupported =
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new EnumJvmThreadCpuTimeMonitoring("unsupported");
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final static EnumJvmThreadCpuTimeMonitoring
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JvmThreadCpuTimeMonitoringEnabled =
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new EnumJvmThreadCpuTimeMonitoring("enabled");
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final static EnumJvmThreadCpuTimeMonitoring
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JvmThreadCpuTimeMonitoringDisabled =
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new EnumJvmThreadCpuTimeMonitoring("disabled");
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/**
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* Variable for storing the value of "JvmThreadContentionMonitoring".
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*
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* "The state of the Thread Contention Monitoring feature.
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* This feature can be:
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*
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* unsupported: The JVM does not support Thread Contention Monitoring.
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* enabled : The JVM supports Thread Contention Monitoring, and it
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* is enabled.
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* disabled : The JVM supports Thread Contention Monitoring, and it
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* is disabled.
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*
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* Only enabled(3) and disabled(4) may be supplied as values to a
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* SET request. unsupported(1) can only be set internally by the
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* agent.
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*
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* See java.lang.management.ThreadMXBean.isThreadContentionMonitoringSupported(),
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* java.lang.management.ThreadMXBean.isThreadContentionMonitoringEnabled(),
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* java.lang.management.ThreadMXBean.setThreadContentionMonitoringEnabled()
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* "
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*
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*/
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static final EnumJvmThreadContentionMonitoring
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JvmThreadContentionMonitoringUnsupported =
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new EnumJvmThreadContentionMonitoring("unsupported");
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static final EnumJvmThreadContentionMonitoring
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JvmThreadContentionMonitoringEnabled =
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new EnumJvmThreadContentionMonitoring("enabled");
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static final EnumJvmThreadContentionMonitoring
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JvmThreadContentionMonitoringDisabled =
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new EnumJvmThreadContentionMonitoring("disabled");
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/**
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* Constructor for the "JvmThreading" group.
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* If the group contains a table, the entries created through an SNMP SET
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* will not be registered in Java DMK.
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*/
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public JvmThreadingImpl(SnmpMib myMib) {
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log.debug("JvmThreadingImpl","Constructor");
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}
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/**
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* Constructor for the "JvmThreading" group.
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* If the group contains a table, the entries created through an SNMP SET
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* will be AUTOMATICALLY REGISTERED in Java DMK.
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*/
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public JvmThreadingImpl(SnmpMib myMib, MBeanServer server) {
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log.debug("JvmThreadingImpl","Constructor with server");
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}
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/**
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* ThreadMXBean accessor. It is acquired from the
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* java.lang.management.ManagementFactory
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* @return The local ThreadMXBean.
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*/
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static ThreadMXBean getThreadMXBean() {
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return ManagementFactory.getThreadMXBean();
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}
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/**
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* Getter for the "JvmThreadCpuTimeMonitoring" variable.
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*/
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public EnumJvmThreadCpuTimeMonitoring getJvmThreadCpuTimeMonitoring()
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throws SnmpStatusException {
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ThreadMXBean mbean = getThreadMXBean();
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if(!mbean.isThreadCpuTimeSupported()) {
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log.debug("getJvmThreadCpuTimeMonitoring",
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"Unsupported ThreadCpuTimeMonitoring");
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return JvmThreadCpuTimeMonitoringUnsupported;
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}
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try {
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if(mbean.isThreadCpuTimeEnabled()) {
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log.debug("getJvmThreadCpuTimeMonitoring",
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"Enabled ThreadCpuTimeMonitoring");
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return JvmThreadCpuTimeMonitoringEnabled;
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} else {
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log.debug("getJvmThreadCpuTimeMonitoring",
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"Disabled ThreadCpuTimeMonitoring");
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return JvmThreadCpuTimeMonitoringDisabled;
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}
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}catch(UnsupportedOperationException e) {
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log.debug("getJvmThreadCpuTimeMonitoring",
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"Newly unsupported ThreadCpuTimeMonitoring");
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return JvmThreadCpuTimeMonitoringUnsupported;
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}
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}
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/**
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* Setter for the "JvmThreadCpuTimeMonitoring" variable.
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*/
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public void setJvmThreadCpuTimeMonitoring(EnumJvmThreadCpuTimeMonitoring x)
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throws SnmpStatusException {
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ThreadMXBean mbean = getThreadMXBean();
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// We can trust the received value, it has been checked in
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// checkJvmThreadCpuTimeMonitoring
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if(JvmThreadCpuTimeMonitoringEnabled.intValue() == x.intValue())
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mbean.setThreadCpuTimeEnabled(true);
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else
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mbean.setThreadCpuTimeEnabled(false);
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}
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/**
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* Checker for the "JvmThreadCpuTimeMonitoring" variable.
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*/
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public void checkJvmThreadCpuTimeMonitoring(EnumJvmThreadCpuTimeMonitoring
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x)
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throws SnmpStatusException {
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//Can't be set externaly to unsupported state.
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if(JvmThreadCpuTimeMonitoringUnsupported.intValue() == x.intValue()) {
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log.debug("checkJvmThreadCpuTimeMonitoring",
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"Try to set to illegal unsupported value");
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throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
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}
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if ((JvmThreadCpuTimeMonitoringEnabled.intValue() == x.intValue()) ||
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(JvmThreadCpuTimeMonitoringDisabled.intValue() == x.intValue())) {
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// The value is a valid value. But is the feature supported?
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ThreadMXBean mbean = getThreadMXBean();
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if(mbean.isThreadCpuTimeSupported()) return;
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// Not supported.
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log.debug("checkJvmThreadCpuTimeMonitoring",
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"Unsupported operation, can't set state");
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throw new
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SnmpStatusException(SnmpDefinitions.snmpRspInconsistentValue);
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}
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// Unknown value.
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log.debug("checkJvmThreadCpuTimeMonitoring",
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"unknown enum value ");
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throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
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}
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/**
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* Getter for the "JvmThreadContentionMonitoring" variable.
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*/
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public EnumJvmThreadContentionMonitoring getJvmThreadContentionMonitoring()
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throws SnmpStatusException {
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ThreadMXBean mbean = getThreadMXBean();
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if(!mbean.isThreadContentionMonitoringSupported()) {
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log.debug("getJvmThreadContentionMonitoring",
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"Unsupported ThreadContentionMonitoring");
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return JvmThreadContentionMonitoringUnsupported;
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}
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if(mbean.isThreadContentionMonitoringEnabled()) {
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log.debug("getJvmThreadContentionMonitoring",
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"Enabled ThreadContentionMonitoring");
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return JvmThreadContentionMonitoringEnabled;
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} else {
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log.debug("getJvmThreadContentionMonitoring",
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"Disabled ThreadContentionMonitoring");
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return JvmThreadContentionMonitoringDisabled;
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}
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}
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/**
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* Setter for the "JvmThreadContentionMonitoring" variable.
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*/
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public void setJvmThreadContentionMonitoring(
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EnumJvmThreadContentionMonitoring x)
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throws SnmpStatusException {
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ThreadMXBean mbean = getThreadMXBean();
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// We can trust the received value, it has been checked in
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// checkJvmThreadContentionMonitoring
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if(JvmThreadContentionMonitoringEnabled.intValue() == x.intValue())
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mbean.setThreadContentionMonitoringEnabled(true);
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else
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mbean.setThreadContentionMonitoringEnabled(false);
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}
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/**
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* Checker for the "JvmThreadContentionMonitoring" variable.
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*/
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public void checkJvmThreadContentionMonitoring(
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EnumJvmThreadContentionMonitoring x)
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throws SnmpStatusException {
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//Can't be set externaly to unsupported state.
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if(JvmThreadContentionMonitoringUnsupported.intValue()==x.intValue()) {
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log.debug("checkJvmThreadContentionMonitoring",
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"Try to set to illegal unsupported value");
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throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
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}
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if ((JvmThreadContentionMonitoringEnabled.intValue()==x.intValue()) ||
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(JvmThreadContentionMonitoringDisabled.intValue()==x.intValue())) {
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// The value is valid, but is the feature supported ?
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ThreadMXBean mbean = getThreadMXBean();
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if(mbean.isThreadContentionMonitoringSupported()) return;
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log.debug("checkJvmThreadContentionMonitoring",
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"Unsupported operation, can't set state");
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throw new
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SnmpStatusException(SnmpDefinitions.snmpRspInconsistentValue);
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}
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log.debug("checkJvmThreadContentionMonitoring",
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"Try to set to unknown value");
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throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
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}
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/**
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* Getter for the "JvmThreadTotalStartedCount" variable.
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*/
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public Long getJvmThreadTotalStartedCount() throws SnmpStatusException {
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return new Long(getThreadMXBean().getTotalStartedThreadCount());
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}
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/**
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* Getter for the "JvmThreadPeakCount" variable.
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*/
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public Long getJvmThreadPeakCount() throws SnmpStatusException {
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return new Long(getThreadMXBean().getPeakThreadCount());
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}
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/**
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* Getter for the "JvmThreadDaemonCount" variable.
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*/
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public Long getJvmThreadDaemonCount() throws SnmpStatusException {
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return new Long(getThreadMXBean().getDaemonThreadCount());
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}
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/**
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* Getter for the "JvmThreadCount" variable.
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*/
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public Long getJvmThreadCount() throws SnmpStatusException {
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return new Long(getThreadMXBean().getThreadCount());
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}
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/**
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* Getter for the "JvmThreadPeakCountReset" variable.
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*/
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public synchronized Long getJvmThreadPeakCountReset()
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throws SnmpStatusException {
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return new Long(jvmThreadPeakCountReset);
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}
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/**
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* Setter for the "JvmThreadPeakCountReset" variable.
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*/
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public synchronized void setJvmThreadPeakCountReset(Long x)
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throws SnmpStatusException {
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final long l = x.longValue();
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if (l > jvmThreadPeakCountReset) {
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final long stamp = System.currentTimeMillis();
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getThreadMXBean().resetPeakThreadCount();
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jvmThreadPeakCountReset = stamp;
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log.debug("setJvmThreadPeakCountReset",
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"jvmThreadPeakCountReset="+stamp);
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}
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}
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/**
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* Checker for the "JvmThreadPeakCountReset" variable.
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*/
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public void checkJvmThreadPeakCountReset(Long x)
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throws SnmpStatusException {
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}
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/* Last time thread peak count was reset */
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private long jvmThreadPeakCountReset=0;
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static final MibLogger log = new MibLogger(JvmThreadingImpl.class);
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}
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