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src/java.management/share/classes/java/lang/management/LockInfo.java

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   1 /*
   2  * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  25 
  26 package java.lang.management;
  27 
  28 import javax.management.openmbean.CompositeData;
  29 import java.util.concurrent.locks.*;
  30 import sun.management.LockInfoCompositeData;
  31 
  32 /**
  33  * Information about a <em>lock</em>.  A lock can be a built-in object monitor,
  34  * an <em>ownable synchronizer</em>, or the {@link Condition Condition}
  35  * object associated with synchronizers.
  36  * <p>
  37  * <a id="OwnableSynchronizer">An ownable synchronizer</a> is
  38  * a synchronizer that may be exclusively owned by a thread and uses
  39  * {@link AbstractOwnableSynchronizer AbstractOwnableSynchronizer}
  40  * (or its subclass) to implement its synchronization property.
  41  * {@link ReentrantLock ReentrantLock} and the write-lock (but not
  42  * the read-lock) of {@link ReentrantReadWriteLock ReentrantReadWriteLock} are
  43  * two examples of ownable synchronizers provided by the platform.
  44  *
  45  * <h2><a id="MappedType">MXBean Mapping</a></h2>
  46  * {@code LockInfo} is mapped to a {@link CompositeData CompositeData}
  47  * as specified in the {@link #from from} method.
  48  *
  49  * @see java.util.concurrent.locks.AbstractOwnableSynchronizer
  50  * @see java.util.concurrent.locks.Condition
  51  *
  52  * @author  Mandy Chung
  53  * @since   1.6
  54  */
  55 
  56 public class LockInfo {
  57 
  58     private String className;
  59     private int    identityHashCode;
  60 
  61     /**
  62      * Constructs a {@code LockInfo} object.
  63      *
  64      * @param className the fully qualified name of the class of the lock object.
  65      * @param identityHashCode the {@link System#identityHashCode


   1 /*
   2  * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  25 
  26 package java.lang.management;
  27 
  28 import javax.management.openmbean.CompositeData;
  29 import java.util.concurrent.locks.*;
  30 import sun.management.LockInfoCompositeData;
  31 
  32 /**
  33  * Information about a <em>lock</em>.  A lock can be a built-in object monitor,
  34  * an <em>ownable synchronizer</em>, or the {@link Condition Condition}
  35  * object associated with synchronizers.
  36  * <p>
  37  * <a id="OwnableSynchronizer">An ownable synchronizer</a> is
  38  * a synchronizer that may be exclusively owned by a thread and uses
  39  * {@link AbstractOwnableSynchronizer AbstractOwnableSynchronizer}
  40  * (or its subclass) to implement its synchronization property.
  41  * {@link ReentrantLock ReentrantLock} and the write-lock (but not
  42  * the read-lock) of {@link ReentrantReadWriteLock ReentrantReadWriteLock} are
  43  * two examples of ownable synchronizers provided by the platform.
  44  *
  45  * <h3><a id="MappedType">MXBean Mapping</a></h3>
  46  * {@code LockInfo} is mapped to a {@link CompositeData CompositeData}
  47  * as specified in the {@link #from from} method.
  48  *
  49  * @see java.util.concurrent.locks.AbstractOwnableSynchronizer
  50  * @see java.util.concurrent.locks.Condition
  51  *
  52  * @author  Mandy Chung
  53  * @since   1.6
  54  */
  55 
  56 public class LockInfo {
  57 
  58     private String className;
  59     private int    identityHashCode;
  60 
  61     /**
  62      * Constructs a {@code LockInfo} object.
  63      *
  64      * @param className the fully qualified name of the class of the lock object.
  65      * @param identityHashCode the {@link System#identityHashCode


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