jdk/test/sun/reflect/AnonymousNewInstance/ManyNewInstanceAnonTest.java
changeset 37377 bd3b98a11a14
parent 37376 5daa5fbad3ce
parent 37374 ee1b8619eddb
child 37380 55c2549714af
equal deleted inserted replaced
37376:5daa5fbad3ce 37377:bd3b98a11a14
     1 /*
       
     2  * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
       
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4  *
       
     5  * This code is free software; you can redistribute it and/or modify it
       
     6  * under the terms of the GNU General Public License version 2 only, as
       
     7  * published by the Free Software Foundation.
       
     8  *
       
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    12  * version 2 for more details (a copy is included in the LICENSE file that
       
    13  * accompanied this code).
       
    14  *
       
    15  * You should have received a copy of the GNU General Public License version
       
    16  * 2 along with this work; if not, write to the Free Software Foundation,
       
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    18  *
       
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
       
    20  * or visit www.oracle.com if you need additional information or have any
       
    21  * questions.
       
    22  */
       
    23 
       
    24 /*
       
    25  * @test
       
    26  * @bug 7194897
       
    27  * @summary JSR 292: Cannot create more than 16 instances of an anonymous class
       
    28  * @modules java.base/jdk.internal.misc
       
    29  *          java.management
       
    30  * @library /lib/testlibrary
       
    31  * @author  Robert Field
       
    32  * @compile -XDignore.symbol.file ManyNewInstanceAnonTest.java
       
    33  * @build jdk.testlibrary.*
       
    34  * @run main ClassFileInstaller ManyNewInstanceAnonTest
       
    35  * @run main/othervm -Xbootclasspath/a:. -Xverify:all ManyNewInstanceAnonTest
       
    36  * @run main/othervm -Xbootclasspath/a:. -Xverify:all -Dsun.reflection.noInflation=true ManyNewInstanceAnonTest
       
    37  */
       
    38 import java.io.ByteArrayOutputStream;
       
    39 import java.io.InputStream;
       
    40 import jdk.internal.misc.Unsafe;
       
    41 
       
    42 public class ManyNewInstanceAnonTest {
       
    43 
       
    44     static final int REPS = 20;
       
    45     static final Class<?> klass = ManyNewInstanceAnonTest.class;
       
    46 
       
    47     public static void main(String[] args) throws Exception {
       
    48         Class<?> c = Unsafe.getUnsafe().defineAnonymousClass(klass, readClassFile(), null);
       
    49         for (int i = 0; i < REPS; ++i) {
       
    50             System.out.printf("%d: %s\n", i, c.newInstance());
       
    51         }
       
    52         System.out.println("Passed.");
       
    53     }
       
    54 
       
    55     private static byte[] readClassFile() throws Exception {
       
    56         try (InputStream in = klass.getResourceAsStream(klass.getSimpleName() + ".class");
       
    57              ByteArrayOutputStream out = new ByteArrayOutputStream())
       
    58         {
       
    59             int b;
       
    60             while ((b = in.read()) != -1) {
       
    61                 out.write(b);
       
    62             }
       
    63             return out.toByteArray();
       
    64         }
       
    65     }
       
    66 }