1 /* 2 * Copyright (c) 2013, 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 import sun.hotspot.WhiteBox; 25 import java.lang.reflect.Executable; 26 import java.lang.reflect.Method; 27 import compiler.whitebox.CompilerWhiteBoxTest; 28 29 /* 30 * @test DeoptimizeMultipleOSRTest 31 * @bug 8061817 32 * @library /testlibrary /test/lib / 33 * @modules java.base/jdk.internal.misc 34 * @modules java.management 35 * @build DeoptimizeMultipleOSRTest 36 * @run main ClassFileInstaller sun.hotspot.WhiteBox 37 * sun.hotspot.WhiteBox$WhiteBoxPermission 38 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,DeoptimizeMultipleOSRTest::triggerOSR DeoptimizeMultipleOSRTest 39 * @summary testing of WB::deoptimizeMethod() 40 */ 41 public class DeoptimizeMultipleOSRTest { 42 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); 43 private static final long BACKEDGE_THRESHOLD = 150000; 44 private Method method; 45 private int counter = 0; 46 47 public static void main(String[] args) throws Exception { 48 DeoptimizeMultipleOSRTest test = new DeoptimizeMultipleOSRTest(); 49 test.test(); 50 } 51 52 /** 53 * Triggers two different OSR compilations for the same method and 54 * checks if WhiteBox.deoptimizeMethod() deoptimizes both. 55 * 56 * @throws Exception 57 */ 58 public void test() throws Exception { 59 method = DeoptimizeMultipleOSRTest.class.getDeclaredMethod("triggerOSR", boolean.class, long.class); 60 // Trigger two OSR compiled versions 61 triggerOSR(true, BACKEDGE_THRESHOLD); 62 triggerOSR(false, BACKEDGE_THRESHOLD); 63 // Wait for compilation 64 CompilerWhiteBoxTest.waitBackgroundCompilation(method); 65 // Deoptimize 66 WHITE_BOX.deoptimizeMethod(method, true); 67 if (WHITE_BOX.isMethodCompiled(method, true)) { 68 throw new AssertionError("Not all OSR compiled versions were deoptimized"); 69 } 70 } 71 72 /** 73 * Triggers OSR compilations by executing loops. 74 * 75 * @param first Determines which loop to execute 76 * @param limit The number of loop iterations 77 */ 78 public void triggerOSR(boolean first, long limit) { 79 if (limit != 1) { 80 // Warmup method to avoid uncommon traps 81 for (int i = 0; i < limit; ++i) { 82 triggerOSR(first, 1); 83 } 84 CompilerWhiteBoxTest.waitBackgroundCompilation(method); 85 } 86 if (first) { 87 // Trigger OSR compilation 1 88 for (int i = 0; i < limit; ++i) { 89 counter++; 90 } 91 } else { 92 // Trigger OSR compilation 2 93 for (int i = 0; i < limit; ++i) { 94 counter++; 95 } 96 } 97 } 98 }