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Top Description Methods
java.lang.management

public Interface CompilationMXBean

extends PlatformManagedObject
Known Direct Implementers
sun.management.CompilationImpl
The management interface for the compilation system of the Java virtual machine.

A Java virtual machine has a single instance of the implementation class of this interface. This instance implementing this interface is an MXBean that can be obtained by calling the ManagementFactory#getCompilationMXBean method or from the platform MBeanServer method.

The ObjectName for uniquely identifying the MXBean for the compilation system within an MBeanServer is:

java.lang:type=Compilation
It can be obtained by calling the PlatformManagedObject#getObjectName method.
Author
Mandy Chung
Since
1.5
See Also
ManagementFactory#getPlatformMXBeans(Class), JMX Specification., Ways to Access MXBeans

Method Summary

Modifier and TypeMethod and Description
public String

Returns:

the name of the JIT compiler.
getName()

Returns the name of the Just-in-time (JIT) compiler.

public long

Returns:

Compilation time in milliseconds
getTotalCompilationTime()

Returns the approximate accumulated elapsed time (in milliseconds) spent in compilation.

public boolean

Returns:

true if the monitoring of compilation time is supported; false otherwise.
isCompilationTimeMonitoringSupported()

Tests if the Java virtual machine supports the monitoring of compilation time.

Inherited from java.lang.management.PlatformManagedObject:
getObjectName

Method Detail

getNameback to summary
public String getName()

Returns the name of the Just-in-time (JIT) compiler.

Returns:String

the name of the JIT compiler.

getTotalCompilationTimeback to summary
public long getTotalCompilationTime()

Returns the approximate accumulated elapsed time (in milliseconds) spent in compilation. If multiple threads are used for compilation, this value is summation of the approximate time that each thread spent in compilation.

This method is optionally supported by the platform. A Java virtual machine implementation may not support the compilation time monitoring. The isCompilationTimeMonitoringSupported method can be used to determine if the Java virtual machine supports this operation.

This value does not indicate the level of performance of the Java virtual machine and is not intended for performance comparisons of different virtual machine implementations. The implementations may have different definitions and different measurements of the compilation time.

Returns:long

Compilation time in milliseconds

Exceptions
UnsupportedOperationException:
if the Java virtual machine does not support this operation.
isCompilationTimeMonitoringSupportedback to summary
public boolean isCompilationTimeMonitoringSupported()

Tests if the Java virtual machine supports the monitoring of compilation time.

Returns:boolean

true if the monitoring of compilation time is supported; false otherwise.