| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8074551 |
| * @library /testlibrary |
| * @run main PollutedTrapCounts |
| */ |
| import java.lang.invoke.*; |
| import com.oracle.java.testlibrary.*; |
| |
| public class PollutedTrapCounts { |
| public static void main(String[] args) throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+IgnoreUnrecognizedVMOptions", |
| "-XX:-TieredCompilation", "-Xbatch", |
| "-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10", |
| "-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining", |
| "PollutedTrapCounts$Test"); |
| |
| OutputAnalyzer analyzer = new OutputAnalyzer(pb.start()); |
| |
| analyzer.shouldHaveExitValue(0); |
| |
| analyzer.shouldNotContain("not compilable (disabled)"); |
| } |
| |
| static class Test { |
| public static final MethodHandle test1; |
| public static final MethodHandle test2; |
| public static final MethodHandle empty; |
| |
| static { |
| try { |
| Class<?> THIS_CLASS = Test.class; |
| MethodHandles.Lookup LOOKUP = MethodHandles.lookup(); |
| test1 = LOOKUP.findStatic(THIS_CLASS, "test1", MethodType.methodType(boolean.class, boolean.class)); |
| test2 = LOOKUP.findStatic(THIS_CLASS, "test2", MethodType.methodType(boolean.class, boolean.class)); |
| empty = LOOKUP.findStatic(THIS_CLASS, "empty", MethodType.methodType(void.class, boolean.class)); |
| } catch(Throwable e) { |
| throw new Error(e); |
| } |
| } |
| |
| static boolean test1(boolean b) { |
| return b; |
| } |
| static boolean test2(boolean b) { |
| return true; |
| } |
| static void empty(boolean b) {} |
| |
| static void test(boolean freqValue, boolean removeInlineBlocker) throws Throwable { |
| MethodHandle innerGWT = MethodHandles.guardWithTest(test1, empty, empty); |
| MethodHandle outerGWT = MethodHandles.guardWithTest(test2, innerGWT, innerGWT); |
| |
| // Trigger compilation |
| for (int i = 0; i < 20_000; i++) { |
| outerGWT.invokeExact(freqValue); |
| } |
| |
| // Trigger deopt & nmethod invalidation |
| outerGWT.invokeExact(!freqValue); |
| |
| // Force inline blocker removal on rare-taken path |
| if (removeInlineBlocker) { |
| for (int i = 0; i < 100; i++) { |
| outerGWT.invokeExact(!freqValue); |
| } |
| } |
| |
| // Trigger recompilation |
| for (int i = 0; i < 20_000; i++) { |
| outerGWT.invokeExact(freqValue); |
| } |
| } |
| |
| public static void main(String[] args) throws Throwable { |
| boolean freqValue = true; |
| boolean removeInlineBlocker = false; |
| for (int i = 0; i < 20; i++) { |
| test(freqValue, removeInlineBlocker); |
| freqValue = !freqValue; |
| removeInlineBlocker = !removeInlineBlocker; |
| } |
| } |
| } |
| } |