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