Java example source code file (CompilationImpl.java)

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Java - Java tags/keywords

assertionerror, compilationimpl, compilationmxbean, management, null, objectname, string, unsupportedoperationexception, vmmanagement

The CompilationImpl.java Java example source code

/*
 * 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 sun.management;

import java.lang.management.CompilationMXBean;
import java.lang.management.ManagementFactory;
import javax.management.ObjectName;

/**
 * Implementation class for the compilation subsystem.
 * Standard and committed hotspot-specific metrics if any.
 *
 * ManagementFactory.getCompilationMXBean() returns an instance
 * of this class.
 */
class CompilationImpl implements CompilationMXBean {

    private final VMManagement jvm;
    private final String name;

    /**
     * Constructor of CompilationImpl class.
     */
    CompilationImpl(VMManagement vm) {
        this.jvm = vm;
        this.name = jvm.getCompilerName();
        if (name == null) {
            throw new AssertionError("Null compiler name");
        }
    }

    public java.lang.String getName() {
        return name;
    }

    public boolean isCompilationTimeMonitoringSupported() {
        return jvm.isCompilationTimeMonitoringSupported();
    }

    public long getTotalCompilationTime() {
        if (!isCompilationTimeMonitoringSupported()) {
            throw new UnsupportedOperationException(
                "Compilation time monitoring is not supported.");
        }

        return jvm.getTotalCompileTime();
    }

    public ObjectName getObjectName() {
        return Util.newObjectName(ManagementFactory.COMPILATION_MXBEAN_NAME);
    }


}