1 /* 2 * Copyright (c) 2013, 2014, 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 import jdk.testlib.WhiteBox; 25 import java.lang.reflect.Executable; 26 import java.lang.reflect.Method; 27 28 /* 29 * @test DeoptimizeMultipleOSRTest 30 * @bug 8061817 31 * @library /testlibrary /../../test/lib 32 * @build DeoptimizeMultipleOSRTest 33 * @run main ClassFileInstaller jdk.testlib.WhiteBox 34 * jdk.testlib.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,DeoptimizeMultipleOSRTest::triggerOSR DeoptimizeMultipleOSRTest 36 * @summary testing of WB::deoptimizeMethod() 37 */ 38 public class DeoptimizeMultipleOSRTest { 39 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); 40 private static final long BACKEDGE_THRESHOLD = 150000; 41 private Method method; 42 private int counter = 0; 43 44 public static void main(String[] args) throws Exception { 45 DeoptimizeMultipleOSRTest test = new DeoptimizeMultipleOSRTest(); 46 test.test(); 47 } 48 49 /** 50 * Triggers two different OSR compilations for the same method and 51 * checks if WhiteBox.deoptimizeMethod() deoptimizes both. 52 * 53 * @throws Exception 54 */ 55 public void test() throws Exception { 56 method = DeoptimizeMultipleOSRTest.class.getDeclaredMethod("triggerOSR", boolean.class, long.class); 57 // Trigger two OSR compiled versions 58 triggerOSR(true, BACKEDGE_THRESHOLD); 59 triggerOSR(false, BACKEDGE_THRESHOLD); 60 // Wait for compilation 61 CompilerWhiteBoxTest.waitBackgroundCompilation(method); 62 // Deoptimize 63 WHITE_BOX.deoptimizeMethod(method, true); 64 if (WHITE_BOX.isMethodCompiled(method, true)) { 65 throw new AssertionError("Not all OSR compiled versions were deoptimized"); 66 } 67 } 68 69 /** 70 * Triggers OSR compilations by executing loops. 71 * 72 * @param first Determines which loop to execute 73 * @param limit The number of loop iterations 74 */ 75 public void triggerOSR(boolean first, long limit) { 76 if (limit != 1) { 77 // Warmup method to avoid uncommon traps 78 for (int i = 0; i < limit; ++i) { 79 triggerOSR(first, 1); 80 } 81 CompilerWhiteBoxTest.waitBackgroundCompilation(method); 82 } 83 if (first) { 84 // Trigger OSR compilation 1 85 for (int i = 0; i < limit; ++i) { 86 counter++; 87 } 88 } else { 89 // Trigger OSR compilation 2 90 for (int i = 0; i < limit; ++i) { 91 counter++; 92 } 93 } 94 } 95 }