1 /*
   2  * Copyright (c) 2014, 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 import java.io.File;
  25 import java.util.ArrayList;
  26 import java.util.Collections;
  27 
  28 import jdk.test.lib.*;
  29 
  30 /*
  31  * @test
  32  * @bug 8050079
  33  * @summary Compiles a monomorphic call to finalizeObject() on a modified java.lang.Object to test C1 CHA.
  34  * @library /testlibrary
  35  * @modules java.base/sun.misc
  36  *          java.management

  37  * @compile -XDignore.symbol.file java/lang/Object.java TestMonomorphicObjectCall.java
  38  * @run main TestMonomorphicObjectCall
  39  */
  40 public class TestMonomorphicObjectCall {
  41     final static String testClasses = System.getProperty("test.classes") + File.separator;
  42 
  43     private static void callFinalize(Object object) throws Throwable {
  44         // Call modified version of java.lang.Object::finalize() that is
  45         // not overridden by any subclass. C1 CHA should mark the call site
  46         // as monomorphic and inline the method.
  47         object.finalizeObject();
  48     }
  49 
  50     public static void main(String[] args) throws Throwable {
  51         if (args.length == 0) {
  52             // Execute new instance with modified java.lang.Object
  53             executeTestJvm();
  54         } else {
  55             // Trigger compilation of 'callFinalize'
  56             callFinalize(new Object());
  57         }
  58     }
  59 
  60     public static void executeTestJvm() throws Throwable {
  61         // Execute test with modified version of java.lang.Object
  62         // in -Xbootclasspath.
  63         String[] vmOpts = new String[] {
  64                 "-Xbootclasspath/p:" + testClasses,
  65                 "-Xcomp",
  66                 "-XX:+IgnoreUnrecognizedVMOptions",
  67                 "-XX:-VerifyDependencies",
  68                 "-XX:CompileOnly=TestMonomorphicObjectCall::callFinalize",
  69                 "-XX:CompileOnly=Object::finalizeObject",
  70                 "-XX:TieredStopAtLevel=1",
  71                 TestMonomorphicObjectCall.class.getName(),
  72                 "true"};
  73         OutputAnalyzer output = ProcessTools.executeTestJvm(vmOpts);
  74         output.shouldHaveExitValue(0);
  75     }
  76 }
--- EOF ---