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