67 lines
2.5 KiB
Java
67 lines
2.5 KiB
Java
/*
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* Copyright (c) 2013, 2015, 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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* @bug 7194897
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* @summary JSR 292: Cannot create more than 16 instances of an anonymous class
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* @modules java.base/sun.misc
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* java.management
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* @library /lib/testlibrary
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* @author Robert Field
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* @compile -XDignore.symbol.file ManyNewInstanceAnonTest.java
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* @build jdk.testlibrary.*
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* @run main ClassFileInstaller ManyNewInstanceAnonTest
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* @run main/othervm -Xbootclasspath/a:. -Xverify:all ManyNewInstanceAnonTest
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* @run main/othervm -Xbootclasspath/a:. -Xverify:all -Dsun.reflection.noInflation=true ManyNewInstanceAnonTest
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*/
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import sun.misc.Unsafe;
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public class ManyNewInstanceAnonTest {
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static final int REPS = 20;
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static final Class<?> klass = ManyNewInstanceAnonTest.class;
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public static void main(String[] args) throws Exception {
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Class<?> c = Unsafe.getUnsafe().defineAnonymousClass(klass, readClassFile(), null);
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for (int i = 0; i < REPS; ++i) {
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System.out.printf("%d: %s\n", i, c.newInstance());
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}
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System.out.println("Passed.");
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}
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private static byte[] readClassFile() throws Exception {
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try (InputStream in = klass.getResourceAsStream(klass.getSimpleName() + ".class");
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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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}
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