7cc1371059
Co-authored-by: Lois Foltan <lois.foltan@oracle.com> Co-authored-by: David Holmes <david.holmes@oracle.com> Co-authored-by: Harold Seigel <harold.seigel@oracle.com> Co-authored-by: Serguei Spitsyn <serguei.spitsyn@oracle.com> Co-authored-by: Alex Buckley <alex.buckley@oracle.com> Co-authored-by: Jamsheed Mohammed C M <jamsheed.c.m@oracle.com> Co-authored-by: Jan Lahoda <jan.lahoda@oracle.com> Co-authored-by: Amy Lu <amy.lu@oracle.com> Reviewed-by: alanb, cjplummer, coleenp, dholmes, dlong, forax, jlahoda, psandoz, plevart, sspitsyn, vromero
98 lines
3.5 KiB
Java
98 lines
3.5 KiB
Java
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @build jdk.test.lib.JDKToolLauncher
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* jdk.test.lib.process.ProcessTools
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* jdk.test.lib.Utils
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* @run main/othervm -Xverify:remote DefineHiddenClass
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*/
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodHandles.Lookup;
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import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import jdk.internal.misc.Unsafe;
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import jdk.test.lib.JDKToolLauncher;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.Utils;
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/* package-private */ interface Test {
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void test();
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}
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public class DefineHiddenClass {
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static final Class<?> klass = DefineHiddenClass.class;
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static final Path SRC_DIR = Paths.get(Utils.TEST_SRC, "hidden");
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static final Path CLASSES_DIR = Paths.get(Utils.TEST_CLASSES, "hidden");
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static void compileSources(String sourceFile) throws Throwable {
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JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("javac");
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launcher.addToolArg("-cp")
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.addToolArg(Utils.TEST_CLASSES.toString())
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.addToolArg("-d")
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.addToolArg(CLASSES_DIR.toString())
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.addToolArg(Paths.get(SRC_DIR.toString(), sourceFile).toString());
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int exitCode = ProcessTools.executeCommand(launcher.getCommand())
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.getExitValue();
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if (exitCode != 0) {
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throw new RuntimeException("Compilation of the test failed. "
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+ "Unexpected exit code: " + exitCode);
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}
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}
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static byte[] readClassFile(String classFileName) throws Exception {
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File classFile = new File(CLASSES_DIR + File.separator + classFileName);
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try (FileInputStream in = new FileInputStream(classFile);
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ByteArrayOutputStream out = new ByteArrayOutputStream())
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{
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int b;
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while ((b = in.read()) != -1) {
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out.write(b);
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}
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return out.toByteArray();
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}
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}
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public static void main(String[] args) throws Throwable {
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compileSources("NameInString.java");
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Lookup lookup = MethodHandles.lookup();
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byte[] bytes = readClassFile("NameInString.class");
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Class<?> c = lookup.defineHiddenClass(bytes, true, NESTMATE).lookupClass();
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Test t = (Test) c.newInstance();
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t.test();
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}
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}
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