102 lines
4.0 KiB
Java
102 lines
4.0 KiB
Java
/*
|
|
* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation. Oracle designates this
|
|
* particular file as subject to the "Classpath" exception as provided
|
|
* by Oracle in the LICENSE file that accompanied this code.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
package java.lang.management;
|
|
|
|
/**
|
|
* The management interface for the compilation system of
|
|
* the Java virtual machine.
|
|
*
|
|
* <p> A Java virtual machine has a single instance of the implementation
|
|
* class of this interface. This instance implementing this interface is
|
|
* an <a href="ManagementFactory.html#MXBean">MXBean</a>
|
|
* that can be obtained by calling
|
|
* the {@link ManagementFactory#getCompilationMXBean} method or
|
|
* from the {@link ManagementFactory#getPlatformMBeanServer
|
|
* platform <tt>MBeanServer</tt>} method.
|
|
*
|
|
* <p>The <tt>ObjectName</tt> for uniquely identifying the MXBean for
|
|
* the compilation system within an MBeanServer is:
|
|
* <blockquote>
|
|
* {@link ManagementFactory#COMPILATION_MXBEAN_NAME
|
|
* <tt>java.lang:type=Compilation</tt>}
|
|
* </blockquote>
|
|
*
|
|
* It can be obtained by calling the
|
|
* {@link PlatformManagedObject#getObjectName} method.
|
|
*
|
|
* @see ManagementFactory#getPlatformMXBeans(Class)
|
|
* @see <a href="../../../javax/management/package-summary.html">
|
|
* JMX Specification.</a>
|
|
* @see <a href="package-summary.html#examples">
|
|
* Ways to Access MXBeans</a>
|
|
*
|
|
* @author Mandy Chung
|
|
* @since 1.5
|
|
*/
|
|
public interface CompilationMXBean extends PlatformManagedObject {
|
|
/**
|
|
* Returns the name of the Just-in-time (JIT) compiler.
|
|
*
|
|
* @return the name of the JIT compiler.
|
|
*/
|
|
public java.lang.String getName();
|
|
|
|
/**
|
|
* Tests if the Java virtual machine supports the monitoring of
|
|
* compilation time.
|
|
*
|
|
* @return <tt>true</tt> if the monitoring of compilation time is
|
|
* supported ; <tt>false</tt> otherwise.
|
|
*/
|
|
public boolean isCompilationTimeMonitoringSupported();
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* <p>This method is optionally supported by the platform.
|
|
* A Java virtual machine implementation may not support the compilation
|
|
* time monitoring. The {@link #isCompilationTimeMonitoringSupported}
|
|
* method can be used to determine if the Java virtual machine
|
|
* supports this operation.
|
|
*
|
|
* <p> 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.
|
|
*
|
|
* @return Compilation time in milliseconds
|
|
* @throws java.lang.UnsupportedOperationException if the Java
|
|
* virtual machine does not support
|
|
* this operation.
|
|
*
|
|
*/
|
|
public long getTotalCompilationTime();
|
|
}
|