1 /*
   2  * Copyright (c) 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 8074551
  27  * @modules java.base/jdk.internal.misc
  28  * @library /test/lib
  29  *
  30  * @run driver compiler.jsr292.PollutedTrapCounts
  31  */
  32 
  33 package compiler.jsr292;
  34 
  35 import jdk.test.lib.process.OutputAnalyzer;
  36 import jdk.test.lib.process.ProcessTools;
  37 
  38 import java.lang.invoke.MethodHandle;
  39 import java.lang.invoke.MethodHandles;
  40 import java.lang.invoke.MethodType;
  41 
  42 public class PollutedTrapCounts {
  43     public static void main(String[] args) throws Exception {
  44         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  45                 "-XX:+IgnoreUnrecognizedVMOptions",
  46                 "-XX:-TieredCompilation", "-Xbatch",
  47                 "-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10",
  48                 "-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining",
  49                     Test.class.getName());
  50 
  51         OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
  52 
  53         analyzer.shouldHaveExitValue(0);
  54 
  55         analyzer.shouldNotContain("not compilable (disabled)");
  56     }
  57 
  58     static class Test {
  59         public static final MethodHandle test1;
  60         public static final MethodHandle test2;
  61         public static final MethodHandle empty;
  62 
  63         static {
  64             try {
  65                 Class<?> THIS_CLASS = Test.class;
  66                 MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
  67                 test1 = LOOKUP.findStatic(THIS_CLASS, "test1", MethodType.methodType(boolean.class, boolean.class));
  68                 test2 = LOOKUP.findStatic(THIS_CLASS, "test2", MethodType.methodType(boolean.class, boolean.class));
  69                 empty = LOOKUP.findStatic(THIS_CLASS, "empty", MethodType.methodType(void.class, boolean.class));
  70             } catch(Throwable e) {
  71                 throw new Error(e);
  72             }
  73         }
  74 
  75         static boolean test1(boolean b) {
  76             return b;
  77         }
  78         static boolean test2(boolean b) {
  79             return true;
  80         }
  81         static void    empty(boolean b) {}
  82 
  83         static void test(boolean freqValue, boolean removeInlineBlocker) throws Throwable {
  84             MethodHandle innerGWT = MethodHandles.guardWithTest(test1, empty, empty);
  85             MethodHandle outerGWT = MethodHandles.guardWithTest(test2, innerGWT, innerGWT);
  86 
  87             // Trigger compilation
  88             for (int i = 0; i < 20_000; i++) {
  89                 outerGWT.invokeExact(freqValue);
  90             }
  91 
  92             // Trigger deopt & nmethod invalidation
  93             outerGWT.invokeExact(!freqValue);
  94 
  95             // Force inline blocker removal on rare-taken path
  96             if (removeInlineBlocker) {
  97                 for (int i = 0; i < 100; i++) {
  98                     outerGWT.invokeExact(!freqValue);
  99                 }
 100             }
 101 
 102             // Trigger recompilation
 103             for (int i = 0; i < 20_000; i++) {
 104                 outerGWT.invokeExact(freqValue);
 105             }
 106         }
 107 
 108         public static void main(String[] args) throws Throwable {
 109             boolean freqValue = true;
 110             boolean removeInlineBlocker = false;
 111             for (int i = 0; i < 20; i++) {
 112                 test(freqValue, removeInlineBlocker);
 113                 freqValue = !freqValue;
 114                 removeInlineBlocker = !removeInlineBlocker;
 115             }
 116         }
 117     }
 118 }