--- /dev/null 2018-06-17 23:18:20.806999507 +0800 +++ new/src/share/classes/jdk/jfr/internal/PrivateAccess.java 2019-01-29 10:59:39.711554541 +0800 @@ -0,0 +1,95 @@ +/* + * Copyright (c) 2016, 2019, 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 jdk.jfr.internal; + +import java.util.List; +import java.util.Map; + +import jdk.jfr.AnnotationElement; +import jdk.jfr.Configuration; +import jdk.jfr.EventType; +import jdk.jfr.FlightRecorderPermission; +import jdk.jfr.Recording; +import jdk.jfr.SettingDescriptor; +import jdk.jfr.ValueDescriptor; + +/** + * Provides access to package private function in jdk.jfr. + *
+ * The static initializer in this class loads the Settings class, which will
+ * call {@link #setPrivateAccess(PrivateAccess)} on this class, which can be
+ * used call to package protected methods.
+ *
+ * This is similar to how java.lang accesses package private methods in
+ * java.lang.reflect.
+ */
+public abstract class PrivateAccess {
+ private volatile static PrivateAccess instance;
+
+ public static PrivateAccess getInstance() {
+ // Can't be initialized in