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:
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionstatic LockInfo
from
(CompositeData cd) Returns aLockInfo
object represented by the givenCompositeData
.Returns the fully qualified name of the class of the lock object.int
Returns 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
-
LockInfo
Constructs aLockInfo
object.- Parameters:
className
- the fully qualified name of the class of the lock object.identityHashCode
- theidentity hash code
of 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.
-
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.
-
from
Returns aLockInfo
object represented by the givenCompositeData
. The givenCompositeData
must contain the following attributes:Attribute Name Type className java.lang.String
identityHashCode java.lang.Integer
- Parameters:
cd
-CompositeData
representing aLockInfo
- Returns:
- a
LockInfo
object represented bycd
ifcd
is notnull
;null
otherwise. - Throws:
IllegalArgumentException
- ifcd
does not represent aLockInfo
with 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:lock.getClass().getName() + '@' + Integer.toHexString(System.identityHashCode(lock))
lock
is the lock object.
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