Class LockInfo
java.lang.Object
java.lang.management.LockInfo
- Direct Known Subclasses:
MonitorInfo
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 the write-lock (but not
the read-lock) of ReentrantReadWriteLock are
two examples of ownable synchronizers provided by the platform.
MXBean Mapping
LockInfo is mapped to a CompositeData
as specified in the from method.- Since:
- 1.6
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic LockInfofrom(CompositeData cd) Returns aLockInfoobject represented by the givenCompositeData.Returns the fully qualified name of the class of the lock object.intReturns the identity hash code of the lock object returned from theSystem.identityHashCode(java.lang.Object)method.toString()Returns a string representation of a lock.
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Constructor Details
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LockInfo
Constructs aLockInfoobject.- Parameters:
className- the fully qualified name of the class of the lock object.identityHashCode- theidentity hash codeof the lock object.
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Method Details
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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.
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getIdentityHashCode
public int getIdentityHashCode()Returns the identity hash code of the lock object returned from theSystem.identityHashCode(java.lang.Object)method.- Returns:
- the identity hash code of the lock object.
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from
Returns aLockInfoobject represented by the givenCompositeData. The givenCompositeDatamust contain the following attributes:Attribute Name Type className java.lang.StringidentityHashCode java.lang.Integer- Parameters:
cd-CompositeDatarepresenting aLockInfo- Returns:
- a
LockInfoobject represented bycdifcdis notnull;nullotherwise. - Throws:
IllegalArgumentException- ifcddoes not represent aLockInfowith the attributes described above.- Since:
- 1.8
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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:
wherelock.getClass().getName() + '@' + Integer.toHexString(System.identityHashCode(lock))
lockis the lock object.
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