--- /dev/null 2018-04-28 00:26:07.190086997 -0400 +++ new/test/hotspot/jtreg/runtime/Nestmates/privateFields/TestJNI.java 2018-06-20 01:02:28.218865406 -0400 @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2018, 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. + * + * 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. + */ + +/* + * @test + * @bug 8046171 + * @summary Test JNI access to private fields between nestmates and nest-host + * using different flavours of named nested types + * @compile ../NestmatesJNI.java + * @run main/othervm/native TestJNI + * @run main/othervm/native -Xcheck:jni TestJNI + */ +public class TestJNI { + + // Private field of nest-host for nestmates to access + private int priv_field; + + static final String FIELD = "priv_field"; + + // public constructor so we aren't relying on private access + public TestJNI() {} + + // Methods that will access private fields of nestmates + + // NOTE: No StaticIface variants as interfaces can't have instance fields + + void access_priv(TestJNI o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + void access_priv(InnerNested o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + void access_priv(StaticNested o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + + // The various nestmates + + static interface StaticIface { + + // Methods that will access private fields of nestmates + + default void access_priv(TestJNI o) { + int priv_field = getAndInc(o, o.getClass(), FIELD); + } + default void access_priv(InnerNested o) { + int priv_field = getAndInc(o, o.getClass(), FIELD); + } + default void access_priv(StaticNested o) { + int priv_field = getAndInc(o, o.getClass(), FIELD); + } + } + + static class StaticNested { + + private int priv_field; + + // public constructor so we aren't relying on private access + public StaticNested() {} + + // Methods that will access private fields of nestmates + + void access_priv(TestJNI o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + void access_priv(InnerNested o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + void access_priv(StaticNested o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + } + + class InnerNested { + + private int priv_field; + + // public constructor so we aren't relying on private access + public InnerNested() {} + + void access_priv(TestJNI o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + void access_priv(InnerNested o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + void access_priv(StaticNested o) { + this.priv_field = getAndInc(o, o.getClass(), FIELD); + } + } + + public static void main(String[] args) { + TestJNI o = new TestJNI(); + StaticNested s = new StaticNested(); + InnerNested i = o.new InnerNested(); + StaticIface intf = new StaticIface() {}; + + o.access_priv(new TestJNI()); + o.access_priv(i); + o.access_priv(s); + + s.access_priv(o); + s.access_priv(i); + s.access_priv(new StaticNested()); + + i.access_priv(o); + i.access_priv(o.new InnerNested()); + i.access_priv(s); + + intf.access_priv(o); + intf.access_priv(i); + intf.access_priv(s); + } + + static int getAndInc(Object target, Class klass, String field) { + String definingClass = klass.getName(); + String desc = "Access to field " + + definingClass + "." + field + " on instance of class " + + target.getClass().getName(); + int first, second; + try { + first = NestmatesJNI.getIntField(target, definingClass, field); + NestmatesJNI.setIntField(target, definingClass, field, (first + 1)); + second = NestmatesJNI.getIntField(target, definingClass, field); + } + catch (Throwable t) { + throw new Error(desc + ": Unexpected exception: " + t, t); + } + if (second != first + 1) { + throw new Error(desc + ": wrong field values: first=" + first + + ", second=" + second + " (should equal first+1)"); + } + System.out.println(desc + " - passed"); + return first; + } +}