| /* |
| * Copyright (c) 2014, 2016, 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 TestArrayAllocatorMallocLimit |
| * @summary Sanity check that the ArrayAllocatorMallocLimit flag can be set. |
| * The test helps verifying that size_t flags can be set/read. |
| * @bug 8054823 |
| * @key gc |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @run driver TestArrayAllocatorMallocLimit |
| */ |
| |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.ProcessTools; |
| import java.math.BigInteger; |
| |
| public class TestArrayAllocatorMallocLimit { |
| public static void main(String [] args) throws Exception { |
| testDefaultValue(); |
| testSetValue(); |
| } |
| |
| private static final String flagName = "ArrayAllocatorMallocLimit"; |
| |
| // size_t ArrayAllocatorMallocLimit = 18446744073709551615{experimental} |
| private static final String printFlagsFinalPattern = " *size_t *" + flagName + " *:?= *(\\d+) *\\{experimental\\} *"; |
| |
| public static void testDefaultValue() throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockExperimentalVMOptions", "-XX:+PrintFlagsFinal", "-version"); |
| |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| String value = output.firstMatch(printFlagsFinalPattern, 1); |
| |
| try { |
| Asserts.assertNotNull(value, "Couldn't find size_t flag " + flagName); |
| |
| // A size_t is not always parseable with Long.parseValue, |
| // use BigInteger instead. |
| BigInteger biValue = new BigInteger(value); |
| |
| // Sanity check that we got a non-zero value. |
| Asserts.assertNotEquals(biValue, "0"); |
| |
| output.shouldHaveExitValue(0); |
| } catch (Exception e) { |
| System.err.println(output.getOutput()); |
| throw e; |
| } |
| } |
| |
| public static void testSetValue() throws Exception { |
| long flagValue = 2048; |
| |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockExperimentalVMOptions", "-XX:" + flagName + "=" + flagValue, "-XX:+PrintFlagsFinal", "-version"); |
| |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| String value = output.firstMatch(printFlagsFinalPattern, 1); |
| |
| try { |
| Asserts.assertNotNull("Couldn't find size_t flag " + flagName); |
| |
| long longValue = Long.parseLong(value); |
| |
| Asserts.assertEquals(longValue, flagValue); |
| |
| output.shouldHaveExitValue(0); |
| } catch (Exception e) { |
| System.err.println(output.getOutput()); |
| throw e; |
| } |
| } |
| |
| } |