1 /* 2 * Copyright (c) 2016, 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 /* 25 * @test TestDisableDefaultGC 26 * @summary Test that the VM complains when the default GC is disabled and no other GC is specified 27 * @bug 8068579 28 * @key gc 29 * @library /test/lib 30 * @requires vm.gc=="null" 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * @run driver TestDisableDefaultGC 34 */ 35 36 import jdk.test.lib.process.ProcessTools; 37 import jdk.test.lib.process.OutputAnalyzer; 38 39 public class TestDisableDefaultGC { 40 public static void main(String[] args) throws Exception { 41 // Start VM, disabling all possible default GCs 42 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:-UseSerialGC", 43 "-XX:-UseParallelGC", 44 "-XX:-UseG1GC", 45 "-XX:-UseConcMarkSweepGC", 46 "-XX:+UnlockExperimentalVMOptions", 47 "-XX:-UseShenandoahGC", 48 "-XX:-UseZGC", 49 "-version"); 50 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 51 output.shouldMatch("Garbage collector not selected"); 52 output.shouldHaveExitValue(1); 53 } 54 }