| /* |
| * Copyright (c) 2013, 2014, 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. |
| */ |
| |
| import sun.hotspot.WhiteBox; |
| import java.lang.reflect.Executable; |
| import java.lang.reflect.Method; |
| |
| /* |
| * @test DeoptimizeMultipleOSRTest |
| * @bug 8061817 |
| * @library /testlibrary /testlibrary/whitebox |
| * @build DeoptimizeMultipleOSRTest |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,DeoptimizeMultipleOSRTest::triggerOSR DeoptimizeMultipleOSRTest |
| * @summary testing of WB::deoptimizeMethod() |
| */ |
| public class DeoptimizeMultipleOSRTest { |
| private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); |
| private static final long BACKEDGE_THRESHOLD = 150000; |
| private Method method; |
| private int counter = 0; |
| |
| public static void main(String[] args) throws Exception { |
| DeoptimizeMultipleOSRTest test = new DeoptimizeMultipleOSRTest(); |
| test.test(); |
| } |
| |
| /** |
| * Triggers two different OSR compilations for the same method and |
| * checks if WhiteBox.deoptimizeMethod() deoptimizes both. |
| * |
| * @throws Exception |
| */ |
| public void test() throws Exception { |
| method = DeoptimizeMultipleOSRTest.class.getDeclaredMethod("triggerOSR", boolean.class, long.class); |
| // Trigger two OSR compiled versions |
| triggerOSR(true, BACKEDGE_THRESHOLD); |
| triggerOSR(false, BACKEDGE_THRESHOLD); |
| // Wait for compilation |
| CompilerWhiteBoxTest.waitBackgroundCompilation(method); |
| // Deoptimize |
| WHITE_BOX.deoptimizeMethod(method, true); |
| if (WHITE_BOX.isMethodCompiled(method, true)) { |
| throw new AssertionError("Not all OSR compiled versions were deoptimized"); |
| } |
| } |
| |
| /** |
| * Triggers OSR compilations by executing loops. |
| * |
| * @param first Determines which loop to execute |
| * @param limit The number of loop iterations |
| */ |
| public void triggerOSR(boolean first, long limit) { |
| if (limit != 1) { |
| // Warmup method to avoid uncommon traps |
| for (int i = 0; i < limit; ++i) { |
| triggerOSR(first, 1); |
| } |
| CompilerWhiteBoxTest.waitBackgroundCompilation(method); |
| } |
| if (first) { |
| // Trigger OSR compilation 1 |
| for (int i = 0; i < limit; ++i) { |
| counter++; |
| } |
| } else { |
| // Trigger OSR compilation 2 |
| for (int i = 0; i < limit; ++i) { |
| counter++; |
| } |
| } |
| } |
| } |