1 /*
   2  * Copyright (c) 2011, 2018, 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 /*
  26  * @test
  27  *
  28  * @summary converted from VM Testbase vm/mlvm/indy/stress/java/relinkMutableCallSiteFreq.
  29  * VM Testbase keywords: [feature_mlvm, nonconcurrent]
  30  *
  31  * @library /vmTestbase
  32  *          /test/lib
  33  * @run driver jdk.test.lib.FileInstaller . .
  34  *
  35  * @comment build test class and indify classes
  36  * @build vm.mlvm.indy.stress.java.relinkMutableCallSiteFreq.Test
  37  * @run driver vm.mlvm.share.IndifiedClassesBuilder
  38  *
  39  * @run main/othervm vm.mlvm.indy.stress.java.relinkMutableCallSiteFreq.Test
  40  */
  41 
  42 package vm.mlvm.indy.stress.java.relinkMutableCallSiteFreq;
  43 
  44 import java.lang.invoke.CallSite;
  45 import java.lang.invoke.MethodHandle;
  46 import java.lang.invoke.MutableCallSite;
  47 
  48 import vm.mlvm.indy.share.INDIFY_RelinkCallSiteFreqTest;
  49 import vm.mlvm.share.MlvmTest;
  50 
  51 /**
  52  * The test creates a mutable call site and relinks it from one thread while calling the current
  53  * target from the other one. Currently there are 6 targets.
  54 
  55  * The test verifies that target changes in the call site are eventually seen by target calling
  56  * thread by measuring a frequency of calls for each target and comparing it with theoretical frequency.
  57  *
  58  */
  59 public class Test extends INDIFY_RelinkCallSiteFreqTest {
  60 
  61     @Override
  62     protected CallSite createCallSite(MethodHandle mh) {
  63         return new MutableCallSite(mh);
  64     }
  65 
  66     /**
  67      * Runs the test.
  68      * @param args Arguments to the test.
  69      */
  70     public static void main(String[] args) {
  71         MlvmTest.launch(args);
  72     }
  73 }