/* * Copyright (c) 2008, 2018, 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. */ /* * @test * * @summary converted from VM Testbase jit/deoptimization/test03. * VM Testbase keywords: [jit, quick] * * @library /vmTestbase * /test/lib * @run driver jdk.test.lib.FileInstaller . . * @build jit.deoptimization.test03.test03 * @run driver ExecDriver --java jit.deoptimization.test03.test03 */ package jit.deoptimization.test03; import nsk.share.TestFailure; /* * Simple loop causes the optimizer to deoptimize * foo methos when an instance of class B is created. * * run with the -XX:TraceDeoptimization to observ the result. */ class test03 { public static void main (String[] args) { A obj = new A(); for (int index = 0; index < 100; index++) { obj.used_alot(); } } } class A { protected final int counter = 25000; protected int count = 0; public void foo(int index) { count++; if (index == counter - 1) { try { ((B)Class.forName("B").newInstance()).foo(index); } catch(Exception e) { } } } public synchronized void used_alot() { for (int index = 0; index < counter - 1; index++) { synchronized (extern_Lock) { foo(index); } } } Object extern_Lock = new Object(); } class B extends A { public void foo(int index) { count--; } };