1 /* 2 * Copyright (c) 2015, 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 26 * @summary Verify jcmd error message for out-of-range value and for 27 * value which is not allowed by constraint. Also check that 28 * jcmd does not print an error message to the target process output. 29 * @library /testlibrary 30 * @run main TestJcmdOutput 31 */ 32 33 import jdk.test.lib.Asserts; 34 import jdk.test.lib.DynamicVMOption; 35 import jdk.test.lib.OutputAnalyzer; 36 import jdk.test.lib.ProcessTools; 37 import jdk.test.lib.dcmd.PidJcmdExecutor; 38 39 public class TestJcmdOutput { 40 41 /* Message printed by jcmd for value which is out-of-range */ 42 static final String JCMD_OUT_OF_RANGE_MESSAGE = "error: must have value in range"; 43 /* Message printed by jcmd for value which is not allowed by constraint */ 44 static final String JCMD_CONSTRAINT_MESSAGE = "value violates its flag's constraint"; 45 46 public static void main(String[] args) throws Exception { 47 OutputAnalyzer output; 48 49 System.out.println("Verify jcmd error message and that jcmd does not write errors to the target process output"); 50 output = new OutputAnalyzer((ProcessTools.createJavaProcessBuilder( 51 "-Dtest.jdk=" + System.getProperty("test.jdk"), 52 "-XX:MinHeapFreeRatio=20", "-XX:MaxHeapFreeRatio=80", runJcmd.class.getName())).start()); 53 54 output.shouldHaveExitValue(0); 55 /* Verify that jcmd not print error message to the target process output */ 56 output.shouldNotContain(JCMD_OUT_OF_RANGE_MESSAGE); 57 output.shouldNotContain(JCMD_CONSTRAINT_MESSAGE); 58 } 59 60 public static class runJcmd { 61 62 public static void main(String[] args) throws Exception { 63 int minHeapFreeRatio = new Integer((new DynamicVMOption("MinHeapFreeRatio")).getValue()); 64 int maxHeapFreeRatio = new Integer((new DynamicVMOption("MaxHeapFreeRatio")).getValue()); 65 PidJcmdExecutor executor = new PidJcmdExecutor(); 66 67 Asserts.assertGT(minHeapFreeRatio, 0, "MinHeapFreeRatio must be greater than 0"); 68 Asserts.assertLT(maxHeapFreeRatio, 100, "MaxHeapFreeRatio must be less than 100"); 69 70 /* Check out-of-range values */ 71 executor.execute("VM.set_flag MinHeapFreeRatio -1", true).shouldContain(JCMD_OUT_OF_RANGE_MESSAGE); 72 executor.execute("VM.set_flag MaxHeapFreeRatio 101", true).shouldContain(JCMD_OUT_OF_RANGE_MESSAGE); 73 74 /* Check values which not allowed by constraint */ 75 executor.execute( 76 String.format("VM.set_flag MinHeapFreeRatio %d", maxHeapFreeRatio + 1), true) 77 .shouldContain(JCMD_CONSTRAINT_MESSAGE); 78 executor.execute( 79 String.format("VM.set_flag MaxHeapFreeRatio %d", minHeapFreeRatio - 1), true) 80 .shouldContain(JCMD_CONSTRAINT_MESSAGE); 81 } 82 } 83 }