--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/management/ThreadInfoCompositeData.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,413 @@
+/*
+ * Copyright 2004-2005 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.management;
+
+import java.lang.management.ThreadInfo;
+import java.lang.management.MonitorInfo;
+import java.lang.management.LockInfo;
+import javax.management.openmbean.CompositeType;
+import javax.management.openmbean.CompositeData;
+import javax.management.openmbean.CompositeDataSupport;
+import javax.management.openmbean.OpenDataException;
+import javax.management.openmbean.OpenType;
+
+/**
+ * A CompositeData for ThreadInfo for the local management support.
+ * This class avoids the performance penalty paid to the
+ * construction of a CompositeData use in the local case.
+ */
+public class ThreadInfoCompositeData extends LazyCompositeData {
+ private final ThreadInfo threadInfo;
+ private final CompositeData cdata;
+ private final boolean currentVersion;
+
+ private ThreadInfoCompositeData(ThreadInfo ti) {
+ this.threadInfo = ti;
+ this.currentVersion = true;
+ this.cdata = null;
+ }
+
+ private ThreadInfoCompositeData(CompositeData cd) {
+ this.threadInfo = null;
+ this.currentVersion = ThreadInfoCompositeData.isCurrentVersion(cd);
+ this.cdata = cd;
+ }
+
+ public ThreadInfo getThreadInfo() {
+ return threadInfo;
+ }
+
+ public boolean isCurrentVersion() {
+ return currentVersion;
+ }
+
+ public static ThreadInfoCompositeData getInstance(CompositeData cd) {
+ validateCompositeData(cd);
+ return new ThreadInfoCompositeData(cd);
+ }
+
+ public static CompositeData toCompositeData(ThreadInfo ti) {
+ ThreadInfoCompositeData ticd = new ThreadInfoCompositeData(ti);
+ return ticd.getCompositeData();
+ }
+
+ protected CompositeData getCompositeData() {
+ // Convert StackTraceElement[] to CompositeData[]
+ StackTraceElement[] stackTrace = threadInfo.getStackTrace();
+ CompositeData[] stackTraceData =
+ new CompositeData[stackTrace.length];
+ for (int i = 0; i < stackTrace.length; i++) {
+ StackTraceElement ste = stackTrace[i];
+ stackTraceData[i] = StackTraceElementCompositeData.toCompositeData(ste);
+ }
+
+ // Convert MonitorInfo[] and LockInfo[] to CompositeData[]
+ LockDataConverter converter = new LockDataConverter(threadInfo);
+ CompositeData lockInfoData = converter.toLockInfoCompositeData();
+ CompositeData[] lockedSyncsData = converter.toLockedSynchronizersCompositeData();
+
+ // Convert MonitorInfo[] to CompositeData[]
+ MonitorInfo[] lockedMonitors = threadInfo.getLockedMonitors();
+ CompositeData[] lockedMonitorsData =
+ new CompositeData[lockedMonitors.length];
+ for (int i = 0; i < lockedMonitors.length; i++) {
+ MonitorInfo mi = lockedMonitors[i];
+ lockedMonitorsData[i] = MonitorInfoCompositeData.toCompositeData(mi);
+ }
+
+
+ // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
+ // threadInfoItemNames!
+ final Object[] threadInfoItemValues = {
+ new Long(threadInfo.getThreadId()),
+ threadInfo.getThreadName(),
+ threadInfo.getThreadState().name(),
+ new Long(threadInfo.getBlockedTime()),
+ new Long(threadInfo.getBlockedCount()),
+ new Long(threadInfo.getWaitedTime()),
+ new Long(threadInfo.getWaitedCount()),
+ lockInfoData,
+ threadInfo.getLockName(),
+ new Long(threadInfo.getLockOwnerId()),
+ threadInfo.getLockOwnerName(),
+ stackTraceData,
+ new Boolean(threadInfo.isSuspended()),
+ new Boolean(threadInfo.isInNative()),
+ lockedMonitorsData,
+ lockedSyncsData,
+ };
+
+ try {
+ return new CompositeDataSupport(threadInfoCompositeType,
+ threadInfoItemNames,
+ threadInfoItemValues);
+ } catch (OpenDataException e) {
+ // Should never reach here
+ throw Util.newInternalError(e);
+ }
+ }
+
+ // Attribute names
+ private static final String THREAD_ID = "threadId";
+ private static final String THREAD_NAME = "threadName";
+ private static final String THREAD_STATE = "threadState";
+ private static final String BLOCKED_TIME = "blockedTime";
+ private static final String BLOCKED_COUNT = "blockedCount";
+ private static final String WAITED_TIME = "waitedTime";
+ private static final String WAITED_COUNT = "waitedCount";
+ private static final String LOCK_INFO = "lockInfo";
+ private static final String LOCK_NAME = "lockName";
+ private static final String LOCK_OWNER_ID = "lockOwnerId";
+ private static final String LOCK_OWNER_NAME = "lockOwnerName";
+ private static final String STACK_TRACE = "stackTrace";
+ private static final String SUSPENDED = "suspended";
+ private static final String IN_NATIVE = "inNative";
+ private static final String LOCKED_MONITORS = "lockedMonitors";
+ private static final String LOCKED_SYNCS = "lockedSynchronizers";
+
+ private static final String[] threadInfoItemNames = {
+ THREAD_ID,
+ THREAD_NAME,
+ THREAD_STATE,
+ BLOCKED_TIME,
+ BLOCKED_COUNT,
+ WAITED_TIME,
+ WAITED_COUNT,
+ LOCK_INFO,
+ LOCK_NAME,
+ LOCK_OWNER_ID,
+ LOCK_OWNER_NAME,
+ STACK_TRACE,
+ SUSPENDED,
+ IN_NATIVE,
+ LOCKED_MONITORS,
+ LOCKED_SYNCS,
+ };
+
+ // New attributes added in 6.0 ThreadInfo
+ private static final String[] threadInfoV6Attributes = {
+ LOCK_INFO,
+ LOCKED_MONITORS,
+ LOCKED_SYNCS,
+ };
+
+ // Current version of ThreadInfo
+ private static final CompositeType threadInfoCompositeType;
+ // Previous version of ThreadInfo
+ private static final CompositeType threadInfoV5CompositeType;
+ private static final CompositeType lockInfoCompositeType;
+ static {
+ try {
+ threadInfoCompositeType = (CompositeType)
+ MappedMXBeanType.toOpenType(ThreadInfo.class);
+ // Form a CompositeType for JDK 5.0 ThreadInfo version
+ String[] itemNames =
+ threadInfoCompositeType.keySet().toArray(new String[0]);
+ int numV5Attributes = threadInfoItemNames.length -
+ threadInfoV6Attributes.length;
+ String[] v5ItemNames = new String[numV5Attributes];
+ String[] v5ItemDescs = new String[numV5Attributes];
+ OpenType[] v5ItemTypes = new OpenType[numV5Attributes];
+ int i = 0;
+ for (String n : itemNames) {
+ if (isV5Attribute(n)) {
+ v5ItemNames[i] = n;
+ v5ItemDescs[i] = threadInfoCompositeType.getDescription(n);
+ v5ItemTypes[i] = threadInfoCompositeType.getType(n);
+ i++;
+ }
+ }
+
+ threadInfoV5CompositeType =
+ new CompositeType("java.lang.management.ThreadInfo",
+ "J2SE 5.0 java.lang.management.ThreadInfo",
+ v5ItemNames,
+ v5ItemDescs,
+ v5ItemTypes);
+ } catch (OpenDataException e) {
+ // Should never reach here
+ throw Util.newInternalError(e);
+ }
+
+ // Each CompositeData object has its CompositeType associated
+ // with it. So we can get the CompositeType representing LockInfo
+ // from a mapped CompositeData for any LockInfo object.
+ // Thus we construct a random LockInfo object and pass it
+ // to LockDataConverter to do the conversion.
+ Object o = new Object();
+ LockInfo li = new LockInfo(o.getClass().getName(),
+ System.identityHashCode(o));
+ CompositeData cd = LockDataConverter.toLockInfoCompositeData(li);
+ lockInfoCompositeType = cd.getCompositeType();
+ }
+
+ private static boolean isV5Attribute(String itemName) {
+ for (String n : threadInfoV6Attributes) {
+ if (itemName.equals(n)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ public static boolean isCurrentVersion(CompositeData cd) {
+ if (cd == null) {
+ throw new NullPointerException("Null CompositeData");
+ }
+
+ return isTypeMatched(threadInfoCompositeType, cd.getCompositeType());
+ }
+
+ public long threadId() {
+ return getLong(cdata, THREAD_ID);
+ }
+
+ public String threadName() {
+ // The ThreadName item cannot be null so we check that
+ // it is present with a non-null value.
+ String name = getString(cdata, THREAD_NAME);
+ if (name == null) {
+ throw new IllegalArgumentException("Invalid composite data: " +
+ "Attribute " + THREAD_NAME + " has null value");
+ }
+ return name;
+ }
+
+ public Thread.State threadState() {
+ return Thread.State.valueOf(getString(cdata, THREAD_STATE));
+ }
+
+ public long blockedTime() {
+ return getLong(cdata, BLOCKED_TIME);
+ }
+
+ public long blockedCount() {
+ return getLong(cdata, BLOCKED_COUNT);
+ }
+
+ public long waitedTime() {
+ return getLong(cdata, WAITED_TIME);
+ }
+
+ public long waitedCount() {
+ return getLong(cdata, WAITED_COUNT);
+ }
+
+ public String lockName() {
+ // The LockName and LockOwnerName can legitimately be null,
+ // we don't bother to check the value
+ return getString(cdata, LOCK_NAME);
+ }
+
+ public long lockOwnerId() {
+ return getLong(cdata, LOCK_OWNER_ID);
+ }
+
+ public String lockOwnerName() {
+ return getString(cdata, LOCK_OWNER_NAME);
+ }
+
+ public boolean suspended() {
+ return getBoolean(cdata, SUSPENDED);
+ }
+
+ public boolean inNative() {
+ return getBoolean(cdata, IN_NATIVE);
+ }
+
+ public StackTraceElement[] stackTrace() {
+ CompositeData[] stackTraceData =
+ (CompositeData[]) cdata.get(STACK_TRACE);
+
+ // The StackTrace item cannot be null, but if it is we will get
+ // a NullPointerException when we ask for its length.
+ StackTraceElement[] stackTrace =
+ new StackTraceElement[stackTraceData.length];
+ for (int i = 0; i < stackTraceData.length; i++) {
+ CompositeData cdi = stackTraceData[i];
+ stackTrace[i] = StackTraceElementCompositeData.from(cdi);
+ }
+ return stackTrace;
+ }
+
+ // 6.0 new attributes
+ public LockInfo lockInfo() {
+ LockDataConverter converter = new LockDataConverter();
+ CompositeData lockInfoData = (CompositeData) cdata.get(LOCK_INFO);
+ return converter.toLockInfo(lockInfoData);
+ }
+
+ public MonitorInfo[] lockedMonitors() {
+ CompositeData[] lockedMonitorsData =
+ (CompositeData[]) cdata.get(LOCKED_MONITORS);
+
+ // The LockedMonitors item cannot be null, but if it is we will get
+ // a NullPointerException when we ask for its length.
+ MonitorInfo[] monitors =
+ new MonitorInfo[lockedMonitorsData.length];
+ for (int i = 0; i < lockedMonitorsData.length; i++) {
+ CompositeData cdi = lockedMonitorsData[i];
+ monitors[i] = MonitorInfo.from(cdi);
+ }
+ return monitors;
+ }
+
+ public LockInfo[] lockedSynchronizers() {
+ LockDataConverter converter = new LockDataConverter();
+ CompositeData[] lockedSyncsData =
+ (CompositeData[]) cdata.get(LOCKED_SYNCS);
+
+ // The LockedSynchronizers item cannot be null, but if it is we will
+ // get a NullPointerException when we ask for its length.
+ return converter.toLockedSynchronizers(lockedSyncsData);
+ }
+
+ /** Validate if the input CompositeData has the expected
+ * CompositeType (i.e. contain all attributes with expected
+ * names and types).
+ */
+ public static void validateCompositeData(CompositeData cd) {
+ if (cd == null) {
+ throw new NullPointerException("Null CompositeData");
+ }
+
+ CompositeType type = cd.getCompositeType();
+ boolean currentVersion = true;
+ if (!isTypeMatched(threadInfoCompositeType, type)) {
+ currentVersion = false;
+ // check if cd is an older version
+ if (!isTypeMatched(threadInfoV5CompositeType, type)) {
+ throw new IllegalArgumentException(
+ "Unexpected composite type for ThreadInfo");
+ }
+ }
+
+ CompositeData[] stackTraceData =
+ (CompositeData[]) cd.get(STACK_TRACE);
+ if (stackTraceData == null) {
+ throw new IllegalArgumentException(
+ "StackTraceElement[] is missing");
+ }
+ if (stackTraceData.length > 0) {
+ StackTraceElementCompositeData.validateCompositeData(stackTraceData[0]);
+ }
+
+ // validate v6 attributes
+ if (currentVersion) {
+ CompositeData li = (CompositeData) cd.get(LOCK_INFO);
+ if (li != null) {
+ if (!isTypeMatched(lockInfoCompositeType,
+ li.getCompositeType())) {
+ throw new IllegalArgumentException(
+ "Unexpected composite type for \"" +
+ LOCK_INFO + "\" attribute.");
+ }
+ }
+
+ CompositeData[] lms = (CompositeData[]) cd.get(LOCKED_MONITORS);
+ if (lms == null) {
+ throw new IllegalArgumentException("MonitorInfo[] is null");
+ }
+ if (lms.length > 0) {
+ MonitorInfoCompositeData.validateCompositeData(lms[0]);
+ }
+
+ CompositeData[] lsyncs = (CompositeData[]) cd.get(LOCKED_SYNCS);
+ if (lsyncs == null) {
+ throw new IllegalArgumentException("LockInfo[] is null");
+ }
+ if (lsyncs.length > 0) {
+ if (!isTypeMatched(lockInfoCompositeType,
+ lsyncs[0].getCompositeType())) {
+ throw new IllegalArgumentException(
+ "Unexpected composite type for \"" +
+ LOCKED_SYNCS + "\" attribute.");
+ }
+ }
+
+ }
+ }
+}