--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.management/share/classes/com/sun/management/internal/Flag.java	Fri Apr 17 09:40:02 2015 +0200
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2003, 2015, 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.internal;
+
+import java.util.*;
+import com.sun.management.VMOption;
+import com.sun.management.VMOption.Origin;
+import java.security.AccessController;
+
+/**
+ * Flag class is a helper class for constructing a VMOption.
+ * It has the static methods for getting the Flag objects, each
+ * corresponds to one VMOption.
+ *
+ */
+class Flag {
+    private String name;
+    private Object value;
+    private Origin origin;
+    private boolean writeable;
+    private boolean external;
+
+    Flag(String name, Object value, boolean writeable,
+         boolean external, Origin origin) {
+        this.name = name;
+        this.value = value == null ? "" : value ;
+        this.origin = origin;
+        this.writeable = writeable;
+        this.external = external;
+    }
+
+    Object getValue() {
+        return value;
+    }
+
+    boolean isWriteable() {
+        return writeable;
+    }
+
+    boolean isExternal() {
+        return external;
+    }
+
+    VMOption getVMOption() {
+        return new VMOption(name, value.toString(), writeable, origin);
+    }
+
+    static Flag getFlag(String name) {
+        String[] names = new String[1];
+        names[0] = name;
+
+        List<Flag> flags = getFlags(names, 1);
+        if (flags.isEmpty()) {
+            return null;
+        } else {
+            // flags should have only one element
+            return flags.get(0);
+        }
+    }
+
+    static List<Flag> getAllFlags() {
+        int numFlags = getInternalFlagCount();
+
+        // Get all internal flags with names = null
+        return getFlags(null, numFlags);
+    }
+
+    private static List<Flag> getFlags(String[] names, int numFlags) {
+        Flag[] flags = new Flag[numFlags];
+        int count = getFlags(names, flags, numFlags);
+
+        List<Flag> result = new ArrayList<>();
+        for (Flag f : flags) {
+            if (f != null) {
+                result.add(f);
+            }
+        }
+        return result;
+    }
+
+    private static native String[] getAllFlagNames();
+    // getFlags sets each element in the given flags array
+    // with a Flag object only if the name is valid and the
+    // type is supported. The flags array may contain null elements.
+    private static native int getFlags(String[] names, Flag[] flags, int count);
+    private static native int getInternalFlagCount();
+
+    // These set* methods are synchronized on the class object
+    // to avoid multiple threads updating the same flag at the same time.
+    static synchronized native void setLongValue(String name, long value);
+    static synchronized native void setDoubleValue(String name, double value);
+    static synchronized native void setBooleanValue(String name, boolean value);
+    static synchronized native void setStringValue(String name, String value);
+
+    static {
+        AccessController.doPrivileged(
+            new java.security.PrivilegedAction<Void>() {
+                public Void run() {
+                    System.loadLibrary("management");
+                    return null;
+                }
+            });
+        initialize();
+    }
+    private static native void initialize();
+}