| /* |
| * Copyright (c) 2003, 2008, 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 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. |
| * |
| * <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(); |
| } |