1 /* 2 * Copyright (c) 2014, 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 TestArrayAllocatorMallocLimit 26 * @summary Sanity check that the ArrayAllocatorMallocLimit flag can be set. 27 * The test helps verifying that size_t flags can be set/read. 28 * @bug 8054823 29 * @key gc 30 * @library /testlibrary 31 * @build com.oracle.java.testlibrary.* 32 * @run driver TestArrayAllocatorMallocLimit 33 */ 34 35 import com.oracle.java.testlibrary.Asserts; 36 import com.oracle.java.testlibrary.OutputAnalyzer; 37 import com.oracle.java.testlibrary.ProcessTools; 38 import java.math.BigInteger; 39 40 public class TestArrayAllocatorMallocLimit { 41 public static void main(String [] args) throws Exception { 42 testDefaultValue(); 43 testSetValue(); 44 } 45 46 private static final String flagName = "ArrayAllocatorMallocLimit"; 47 48 // size_t ArrayAllocatorMallocLimit = 18446744073709551615{experimental} 49 private static final String printFlagsFinalPattern = " *size_t *" + flagName + " *:?= *(\\d+) *\\{experimental\\} *"; 50 51 public static void testDefaultValue() throws Exception { 52 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 53 "-XX:+UnlockExperimentalVMOptions", "-XX:+PrintFlagsFinal", "-version"); 54 55 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 56 String value = output.firstMatch(printFlagsFinalPattern, 1); 57 58 try { 59 Asserts.assertNotNull(value, "Couldn't find size_t flag " + flagName); 60 61 // A size_t is not always parseable with Long.parseValue, 62 // use BigInteger instead. 63 BigInteger biValue = new BigInteger(value); 64 65 // Sanity check that we got a non-zero value. 66 Asserts.assertNotEquals(biValue, "0"); 67 68 output.shouldHaveExitValue(0); 69 } catch (Exception e) { 70 System.err.println(output.getOutput()); 71 throw e; 72 } 73 } 74 75 public static void testSetValue() throws Exception { 76 long flagValue = 2048; 77 78 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 79 "-XX:+UnlockExperimentalVMOptions", "-XX:" + flagName + "=" + flagValue, "-XX:+PrintFlagsFinal", "-version"); 80 81 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 82 String value = output.firstMatch(printFlagsFinalPattern, 1); 83 84 try { 85 Asserts.assertNotNull("Couldn't find size_t flag " + flagName); 86 87 long longValue = Long.parseLong(value); 88 89 Asserts.assertEquals(longValue, flagValue); 90 91 output.shouldHaveExitValue(0); 92 } catch (Exception e) { 93 System.err.println(output.getOutput()); 94 throw e; 95 } 96 } 97 98 }