81 lines
2.5 KiB
Java
81 lines
2.5 KiB
Java
/*
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* Copyright (c) 2020, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8237837 8244721
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* @summary Shenandoah: assert(mem == __null) failed: only one safepoint
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* @requires vm.flavor == "server"
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* @requires vm.gc.Shenandoah
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*
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* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xcomp -XX:CompileOnly=BarrierInInfiniteLoop::test1
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* -XX:CompileOnly=BarrierInInfiniteLoop::test2 -XX:CompileOnly=BarrierInInfiniteLoop::test3 -XX:CompileCommand=quiet BarrierInInfiniteLoop
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*
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*/
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public class BarrierInInfiniteLoop {
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private static Object field1 = new Object();
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private static Object field2 = new Object();
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private static int field3;
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public static void main(String[] args) {
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test1(false);
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test2(false, false);
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test3(false);
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}
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private static void test1(boolean flag) {
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if (flag) {
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for (;;) {
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field1 = field2;
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}
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}
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}
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private static void test2(boolean flag1, boolean flag2) {
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if (flag1) {
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for (;;) {
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for (;;) {
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if (flag2) {
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break;
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}
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field1 = field2;
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}
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}
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}
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}
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private static void test3(boolean flag) {
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if (flag) {
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for (;;) {
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for (;;) {
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field3 = 42;
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if (field1 == field2) {
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break;
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}
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}
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}
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}
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}
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}
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