diff -r 1dbddb2a1971 -r 07146758775b jdk/src/java.management/share/classes/com/sun/management/VMOption.java --- a/jdk/src/java.management/share/classes/com/sun/management/VMOption.java Thu May 07 20:50:57 2015 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,245 +0,0 @@ -/* - * Copyright (c) 2005, 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 com.sun.management; - -import sun.management.VMOptionCompositeData; -import javax.management.openmbean.CompositeData; - -/** - * Information about a VM option including its value and - * where the value came from which is referred as its - * {@link VMOption.Origin origin}. - *

- * Each VM option has a default value. A VM option can - * be set at VM creation time typically as a command line - * argument to the launcher or an argument passed to the - * VM created using the JNI invocation interface. - * In addition, a VM option may be set via an environment - * variable or a configuration file. A VM option can also - * be set dynamically via a management interface after - * the VM was started. - * - * A {@code VMOption} contains the value of a VM option - * and the origin of that value at the time this {@code VMOption} - * object was constructed. The value of the VM option - * may be changed after the {@code VMOption} object was constructed, - * - * @see - * Java Virtual Machine - * @author Mandy Chung - * @since 1.6 - */ -@jdk.Exported -public class VMOption { - private String name; - private String value; - private boolean writeable; - private Origin origin; - - /** - * Origin of the value of a VM option. It tells where the - * value of a VM option came from. - * - * @since 1.6 - */ - @jdk.Exported - public enum Origin { - /** - * The VM option has not been set and its value - * is the default value. - */ - DEFAULT, - /** - * The VM option was set at VM creation time typically - * as a command line argument to the launcher or - * an argument passed to the VM created using the - * JNI invocation interface. - */ - VM_CREATION, - /** - * The VM option was set via an environment variable. - */ - ENVIRON_VAR, - /** - * The VM option was set via a configuration file. - */ - CONFIG_FILE, - /** - * The VM option was set via the management interface after the VM - * was started. - */ - MANAGEMENT, - /** - * The VM option was set via the VM ergonomic support. - */ - ERGONOMIC, - /** - * The VM option was set using the attach framework. - * @since 1.9 - */ - ATTACH_ON_DEMAND, - /** - * The VM option was set via some other mechanism. - */ - OTHER - } - - /** - * Constructs a {@code VMOption}. - * - * @param name Name of a VM option. - * @param value Value of a VM option. - * @param writeable {@code true} if a VM option can be set dynamically, - * or {@code false} otherwise. - * @param origin where the value of a VM option came from. - * - * @throws NullPointerException if the name or value is {@code null} - */ - public VMOption(String name, String value, boolean writeable, Origin origin) { - this.name = name; - this.value = value; - this.writeable = writeable; - this.origin = origin; - } - - /** - * Constructs a {@code VMOption} object from a - * {@link CompositeData CompositeData}. - */ - private VMOption(CompositeData cd) { - // validate the input composite data - VMOptionCompositeData.validateCompositeData(cd); - - this.name = VMOptionCompositeData.getName(cd); - this.value = VMOptionCompositeData.getValue(cd); - this.writeable = VMOptionCompositeData.isWriteable(cd); - this.origin = VMOptionCompositeData.getOrigin(cd); - } - - /** - * Returns the name of this VM option. - * - * @return the name of this VM option. - */ - public String getName() { - return name; - } - - /** - * Returns the value of this VM option at the time when - * this {@code VMOption} was created. The value could have been changed. - * - * @return the value of the VM option at the time when - * this {@code VMOption} was created. - */ - public String getValue() { - return value; - } - - /** - * Returns the origin of the value of this VM option. That is, - * where the value of this VM option came from. - * - * @return where the value of this VM option came from. - */ - public Origin getOrigin() { - return origin; - } - - /** - * Tests if this VM option is writeable. If this VM option is writeable, - * it can be set by the {@link HotSpotDiagnosticMXBean#setVMOption - * HotSpotDiagnosticMXBean.setVMOption} method. - * - * @return {@code true} if this VM option is writeable; {@code false} - * otherwise. - */ - public boolean isWriteable() { - return writeable; - } - - public String toString() { - return "VM option: " + getName() + - " value: " + value + " " + - " origin: " + origin + " " + - (writeable ? "(read-write)" : "(read-only)"); - } - - /** - * Returns a {@code VMOption} object represented by the - * given {@code CompositeData}. The given {@code CompositeData} - * must contain the following attributes: - * - *

- * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - *
Attribute NameType
name{@code java.lang.String}
value{@code java.lang.String}
origin{@code java.lang.String}
writeable{@code java.lang.Boolean}
- *
- * - * @param cd {@code CompositeData} representing a {@code VMOption} - * - * @throws IllegalArgumentException if {@code cd} does not - * represent a {@code VMOption} with the attributes described - * above. - * - * @return a {@code VMOption} object represented by {@code cd} - * if {@code cd} is not {@code null}; - * {@code null} otherwise. - */ - public static VMOption from(CompositeData cd) { - if (cd == null) { - return null; - } - - if (cd instanceof VMOptionCompositeData) { - return ((VMOptionCompositeData) cd).getVMOption(); - } else { - return new VMOption(cd); - } - - } - - -}