b527edd338
Change the name of generated lambda proxy classes so that they no longer have a numerical suffix. Reviewed-by: mchung
109 lines
3.4 KiB
Java
109 lines
3.4 KiB
Java
/*
|
|
* Copyright (c) 2015, 2023, 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 8020968
|
|
* @summary Basic test for hidden frames
|
|
* @run main HiddenFrames
|
|
*/
|
|
|
|
import java.lang.StackWalker.Option;
|
|
import java.lang.StackWalker.StackFrame;
|
|
import java.lang.reflect.Method;
|
|
import java.util.ArrayList;
|
|
import java.util.List;
|
|
import java.util.stream.Stream;
|
|
|
|
public class HiddenFrames {
|
|
public static void main(String... args) throws Exception {
|
|
new HiddenFrames().test();
|
|
new HiddenFrames(Option.SHOW_REFLECT_FRAMES).test();
|
|
new HiddenFrames(Option.SHOW_HIDDEN_FRAMES).test();
|
|
}
|
|
|
|
private final Option option;
|
|
private final StackWalker walker;
|
|
private final List<StackFrame> lambdas = new ArrayList<>();
|
|
private final List<StackFrame> reflects = new ArrayList<>();
|
|
|
|
HiddenFrames() {
|
|
this.option = null;
|
|
this.walker = StackWalker.getInstance();
|
|
}
|
|
HiddenFrames(Option option) {
|
|
this.option = option;
|
|
this.walker = StackWalker.getInstance(option);
|
|
}
|
|
|
|
void test() throws Exception {
|
|
walk();
|
|
walkFromReflection();
|
|
}
|
|
|
|
void walk() {
|
|
Stream.of(0).forEach(i -> walker.walk(s ->
|
|
{
|
|
s.forEach(this::checkFrame);
|
|
return null;
|
|
}));
|
|
|
|
// only check hidden frames but not reflection frames
|
|
// walk is not invoked via reflection
|
|
if (option == null && !lambdas.isEmpty()) {
|
|
throw new RuntimeException("Hidden frames are shown");
|
|
}
|
|
|
|
if (option == Option.SHOW_HIDDEN_FRAMES && lambdas.isEmpty()) {
|
|
throw new RuntimeException("No hidden Lambda frame");
|
|
}
|
|
}
|
|
|
|
void walkFromReflection() throws Exception {
|
|
Method m = HiddenFrames.class.getDeclaredMethod("walk");
|
|
m.invoke(this);
|
|
|
|
if (option == null && !lambdas.isEmpty()) {
|
|
throw new RuntimeException("Hidden frames are shown");
|
|
}
|
|
|
|
if (option == Option.SHOW_HIDDEN_FRAMES && lambdas.isEmpty()) {
|
|
throw new RuntimeException("No hidden Lambda frame");
|
|
}
|
|
|
|
if (option != null && reflects.isEmpty()) {
|
|
throw new RuntimeException("No reflection frame");
|
|
}
|
|
}
|
|
|
|
void checkFrame(StackFrame frame) {
|
|
String cn = frame.getClassName();
|
|
if (cn.startsWith("java.lang.reflect.") || cn.startsWith("jdk.internal.reflect.")) {
|
|
reflects.add(frame);
|
|
}
|
|
if (cn.contains("$$Lambda")) {
|
|
lambdas.add(frame);
|
|
}
|
|
}
|
|
}
|