1 /* 2 * Copyright (c) 2019, 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 package gc.arguments; 25 26 /* 27 * @test TestSoftMaxHeapSizeFlag 28 * @key gc 29 * @library /test/lib 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @run main/othervm gc.arguments.TestSoftMaxHeapSizeFlag 33 */ 34 35 import jdk.test.lib.process.ProcessTools; 36 37 public class TestSoftMaxHeapSizeFlag { 38 // Note: Xms and Xmx values get aligned up by HeapAlignment which is 32M with 64k pages. 39 private static final long Xms = 224 * 1024 * 1024; 40 private static final long Xmx = 320 * 1024 * 1024; 41 private static final long greaterThanXmx = Xmx + 1; 42 private static final long betweenXmsAndXmx = (Xms + Xmx) / 2; 43 main(String args[])44 public static void main(String args[]) throws Exception { 45 // Test default value 46 ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx, 47 "-XX:+PrintFlagsFinal", "-version" }) 48 .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + Xmx) 49 .shouldHaveExitValue(0); 50 51 // Test setting small value 52 ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx, 53 "-XX:SoftMaxHeapSize=" + Xms, 54 "-XX:+PrintFlagsFinal", "-version" }) 55 .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + Xms) 56 .shouldHaveExitValue(0); 57 58 // Test setting middle value 59 ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx, 60 "-XX:SoftMaxHeapSize=" + betweenXmsAndXmx, 61 "-XX:+PrintFlagsFinal", "-version" }) 62 .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + betweenXmsAndXmx) 63 .shouldHaveExitValue(0); 64 65 // Test setting largest value 66 ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx, 67 "-XX:SoftMaxHeapSize=" + Xmx, 68 "-XX:+PrintFlagsFinal", "-version" }) 69 .shouldMatch("SoftMaxHeapSize[ ]+=[ ]+" + Xmx) 70 .shouldHaveExitValue(0); 71 72 // Test setting a too large value 73 ProcessTools.executeTestJvm(new String[]{ "-Xms" + Xms, "-Xmx" + Xmx, 74 "-XX:SoftMaxHeapSize=" + greaterThanXmx, 75 "-XX:+PrintFlagsFinal", "-version" }) 76 .shouldContain("SoftMaxHeapSize must be less than or equal to the maximum heap size") 77 .shouldHaveExitValue(1); 78 } 79 } 80