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