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 }