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java.lang.management
Class LockInfo


java.lang.Object
  extended by java.lang.management.LockInfo
Direct Known Subclasses:
MonitorInfo 
public class LockInfo
extends Object

Information about a lock. A lock can be a built-in object monitor, an ownable synchronizer, or the Condition object associated with synchronizers.

An ownable synchronizer is a synchronizer that may be exclusively owned by a thread and uses AbstractOwnableSynchronizer (or its subclass) to implement its synchronization property. ReentrantLock and ReentrantReadWriteLock are two examples of example ownable synchronizers provided by the platform.

MXBean Mapping MXBean Mapping

LockInfo is mapped to a CompositeData with attributes as specified in the type mapping rules from of MXBeans . method.

Since:
1.6
See Also:
AbstractOwnableSynchronizer , Condition

Constructor Summary
LockInfo ( String  className, int identityHashCode)
          Constructs a LockInfo object.
 
Method Summary
static  LockInfo from ( CompositeData
          Returns a LockInfo object represented by the given CompositeData .
  String getClassName ()
          Returns the fully qualified name of the class of the lock object.
 int getIdentityHashCode ()
          Returns the identity hash code of the lock object returned from the System.identityHashCode(java.lang.Object) method.
  String toString ()
          Returns a string representation of a lock.
 
Methods inherited from class java.lang. Object
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait
 

Constructor Detail

LockInfo


 @ConstructorProperties( value={"className","identityHashCode"})
public 
public LockInfo(String className,
 int identityHashCode)
Constructs a LockInfo object.

Parameters:
className - the fully qualified name of the class of the lock object.
identityHashCode - the identity hash code of the lock object.
Method Detail

getClassName


public String getClassName()
Returns the fully qualified name of the class of the lock object.

Returns:
the fully qualified name of the class of the lock object.

getIdentityHashCode


public int getIdentityHashCode()
Returns the identity hash code of the lock object returned from the System.identityHashCode(java.lang.Object) method.

Returns:
the identity hash code of the lock object.

toString


public String toString()
Returns a string representation of a lock. The returned string representation consists of the name of the class of the lock object, the at-sign character `@', and the unsigned hexadecimal representation of the identity hash code of the object. This method returns a string equals to the value of: 
 lock.getClass().getName() + '@' + Integer.toHexString(System.identityHashCode(lock))
where lock is the lock object.

Overrides:
toString in class Object
Returns:
the string representation of a lock.

from 


 
public static LockInfofrom ( CompositeData cd)
Returns a LockInfo object represented by the given CompositeData . The given CompositeData must contain the following attributes:
Attribute Name Type
className java.lang.String
identityHashCode java.lang.Integer

Parameters:
cd - CompositeData representing a LockInfo
Returns:
a LockInfo object represented by cd if cd is not null ; null otherwise.
Throws:
IllegalArgumentException - if cd does not represent a LockInfo with the attributes described above.