1 /*
   2  * Copyright (c) 2016, 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  * @modules java.base/jdk.internal.misc
  27  * @library /testlibrary /
  28  *
  29  * @run driver compiler.jsr292.ContinuousCallSiteTargetChange
  30  */
  31 
  32 package compiler.jsr292;
  33 
  34 import jdk.test.lib.OutputAnalyzer;
  35 import jdk.test.lib.ProcessTools;
  36 
  37 import java.lang.invoke.CallSite;
  38 import java.lang.invoke.MethodHandle;
  39 import java.lang.invoke.MethodHandles;
  40 import java.lang.invoke.MethodType;
  41 import java.lang.invoke.MutableCallSite;
  42 
  43 public class ContinuousCallSiteTargetChange {
  44     static void testServer() throws Exception {
  45         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  46                 "-XX:+IgnoreUnrecognizedVMOptions",
  47                 "-server", "-XX:-TieredCompilation", "-Xbatch",
  48                 "-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10",
  49                 "-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining",
  50                 Test.class.getName(), "100");
  51 
  52         OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
  53 
  54         analyzer.shouldHaveExitValue(0);
  55 
  56         analyzer.shouldNotContain("made not compilable");
  57         analyzer.shouldNotContain("decompile_count > PerMethodRecompilationCutoff");
  58     }
  59 
  60     static void testClient() throws Exception {
  61         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  62                 "-XX:+IgnoreUnrecognizedVMOptions",
  63                 "-client", "-XX:+TieredCompilation", "-XX:TieredStopAtLevel=1", "-Xbatch",
  64                 "-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10",
  65                 "-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining",
  66                 Test.class.getName(), "100");
  67 
  68         OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
  69 
  70         analyzer.shouldHaveExitValue(0);
  71 
  72         analyzer.shouldNotContain("made not compilable");
  73         analyzer.shouldNotContain("decompile_count > PerMethodRecompilationCutoff");
  74     }
  75 
  76     public static void main(String[] args) throws Exception {
  77         testServer();
  78         testClient();
  79     }
  80 
  81     static class Test {
  82         static final MethodType mt = MethodType.methodType(void.class);
  83         static final CallSite cs = new MutableCallSite(mt);
  84 
  85         static final MethodHandle mh = cs.dynamicInvoker();
  86 
  87         static void f() {
  88         }
  89 
  90         static void test1() throws Throwable {
  91             mh.invokeExact();
  92         }
  93 
  94         static void test2() throws Throwable {
  95             cs.getTarget().invokeExact();
  96         }
  97 
  98         static void iteration() throws Throwable {
  99             MethodHandle mh1 = MethodHandles.lookup().findStatic(ContinuousCallSiteTargetChange.Test.class, "f", mt);
 100             cs.setTarget(mh1);
 101             for (int i = 0; i < 20_000; i++) {
 102                 test1();
 103                 test2();
 104             }
 105         }
 106 
 107         public static void main(String[] args) throws Throwable {
 108             int iterations = Integer.parseInt(args[0]);
 109             for (int i = 0; i < iterations; i++) {
 110                 iteration();
 111             }
 112         }
 113     }
 114 }