java.lang.management
Interface CompilationMXBean


public interface CompilationMXBean

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() sample code for java.lang.management.ManagementFactory.getCompilationMXBean() definition code for java.lang.management.ManagementFactory.getCompilationMXBean() method or from the platform MBeanServer sample code for java.lang.management.ManagementFactory.getPlatformMBeanServer() definition code for java.lang.management.ManagementFactory.getPlatformMBeanServer() method.

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

java.lang:type=Compilation sample code for java.lang.management.ManagementFactory.COMPILATION_MXBEAN_NAME definition code for java.lang.management.ManagementFactory.COMPILATION_MXBEAN_NAME

Since:
1.5
See Also:
JMX Specification., Ways to Access MXBeans

Method Summary
 String sample code for java.lang.String definition code for java.lang.String getName sample code for java.lang.management.CompilationMXBean.getName() definition code for java.lang.management.CompilationMXBean.getName() ()
          Returns the name of the Just-in-time (JIT) compiler.
 long getTotalCompilationTime sample code for java.lang.management.CompilationMXBean.getTotalCompilationTime() definition code for java.lang.management.CompilationMXBean.getTotalCompilationTime() ()
          Returns the approximate accumlated elapsed time (in milliseconds) spent in compilation.
 boolean isCompilationTimeMonitoringSupported sample code for java.lang.management.CompilationMXBean.isCompilationTimeMonitoringSupported() definition code for java.lang.management.CompilationMXBean.isCompilationTimeMonitoringSupported() ()
          Tests if the Java virtual machine supports the monitoring of compilation time.
 

Method Detail

getName sample code for java.lang.management.CompilationMXBean.getName() definition code for java.lang.management.CompilationMXBean.getName()

String sample code for java.lang.String definition code for java.lang.String  getName()
Returns the name of the Just-in-time (JIT) compiler.

Returns:
the name of the JIT compiler.

isCompilationTimeMonitoringSupported sample code for java.lang.management.CompilationMXBean.isCompilationTimeMonitoringSupported() definition code for java.lang.management.CompilationMXBean.isCompilationTimeMonitoringSupported()

boolean isCompilationTimeMonitoringSupported()
Tests if the Java virtual machine supports the monitoring of compilation time.

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

getTotalCompilationTime sample code for java.lang.management.CompilationMXBean.getTotalCompilationTime() definition code for java.lang.management.CompilationMXBean.getTotalCompilationTime()

long getTotalCompilationTime()
Returns the approximate accumlated 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() sample code for java.lang.management.CompilationMXBean.isCompilationTimeMonitoringSupported() definition code for java.lang.management.CompilationMXBean.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:
Compilation time in milliseconds
Throws:
UnsupportedOperationException sample code for java.lang.UnsupportedOperationException definition code for java.lang.UnsupportedOperationException - if the Java virtual machine does not support this operation.