1 /* 2 * Copyright (c) 2014, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 import sun.management.ManagementFactoryHelper; 27 28 import com.sun.management.HotSpotDiagnosticMXBean; 29 30 import jdk.testlibrary.OutputAnalyzer; 31 import static jdk.testlibrary.Platform.isSolaris; 32 import static jdk.testlibrary.Asserts.assertEquals; 33 import static jdk.testlibrary.Asserts.assertNotEquals; 34 import static jdk.testlibrary.Asserts.assertTrue; 35 36 /** 37 * @test 38 * @summary The test sanity checks 'jinfo -flag' option. 39 * @library /lib/testlibrary 40 * @modules java.management 41 * @build jdk.testlibrary.* JInfoHelper 42 * @run main/othervm -XX:+HeapDumpOnOutOfMemoryError JInfoRunningProcessFlagTest 43 */ 44 public class JInfoRunningProcessFlagTest { 45 46 public static void main(String[] args) throws Exception { 47 testFlag(); 48 testFlagPlus(); 49 testFlagMinus(); 50 testFlagEqual(); 51 52 testInvalidFlag(); 53 54 testSolarisSpecificFlag(); 55 } 56 57 private static void testFlag() throws Exception { 58 OutputAnalyzer output = JInfoHelper.jinfo("-flag", "HeapDumpOnOutOfMemoryError"); 59 output.shouldHaveExitValue(0); 60 assertTrue(output.getStderr().isEmpty(), "'jinfo -flag HeapDumpOnOutOfMemoryError' stderr should be empty"); 61 output.shouldContain("+HeapDumpOnOutOfMemoryError"); 62 } 63 64 private static void testFlagPlus() throws Exception { 65 OutputAnalyzer output = JInfoHelper.jinfo("-flag", "+PrintGC"); 66 output.shouldHaveExitValue(0); 67 output = JInfoHelper.jinfo("-flag", "PrintGC"); 68 output.shouldHaveExitValue(0); 69 output.shouldContain("+PrintGC"); 70 verifyIsEnabled("PrintGC"); 71 } 72 73 private static void testFlagMinus() throws Exception { 74 OutputAnalyzer output = JInfoHelper.jinfo("-flag", "-PrintGC"); 75 output.shouldHaveExitValue(0); 76 output = JInfoHelper.jinfo("-flag", "PrintGC"); 77 output.shouldHaveExitValue(0); 78 output.shouldContain("-PrintGC"); 79 verifyIsDisabled("PrintGC"); 80 } 81 82 private static void testFlagEqual() throws Exception { 83 OutputAnalyzer output = JInfoHelper.jinfo("-flag", "PrintGC=1"); 84 output.shouldHaveExitValue(0); 85 output = JInfoHelper.jinfo("-flag", "PrintGC"); 86 output.shouldHaveExitValue(0); 87 output.shouldContain("+PrintGC"); 88 verifyIsEnabled("PrintGC"); 89 } 90 91 private static void testInvalidFlag() throws Exception { 92 OutputAnalyzer output = JInfoHelper.jinfo("-flag", "monkey"); 93 assertNotEquals(output.getExitValue(), 0, "A non-zero exit code should be returned for invalid flag"); 94 } 95 96 private static void testSolarisSpecificFlag() throws Exception { 97 if (!isSolaris()) 98 return; 99 100 OutputAnalyzer output = JInfoHelper.jinfo("-flag", "+ExtendedDTraceProbes"); 101 output.shouldHaveExitValue(0); 102 output = JInfoHelper.jinfo(); 103 output.shouldContain("+ExtendedDTraceProbes"); 104 verifyIsEnabled("ExtendedDTraceProbes"); 105 106 output = JInfoHelper.jinfo("-flag", "-ExtendedDTraceProbes"); 107 output.shouldHaveExitValue(0); 108 output = JInfoHelper.jinfo(); 109 output.shouldContain("-ExtendedDTraceProbes"); 110 verifyIsDisabled("ExtendedDTraceProbes"); 111 112 output = JInfoHelper.jinfo("-flag", "ExtendedDTraceProbes"); 113 output.shouldContain("-ExtendedDTraceProbes"); 114 output.shouldHaveExitValue(0); 115 } 116 117 private static void verifyIsEnabled(String flag) { 118 HotSpotDiagnosticMXBean hotspotDiagnostic = ManagementFactoryHelper.getDiagnosticMXBean(); 119 String flagValue = hotspotDiagnostic.getVMOption(flag).getValue(); 120 assertEquals(flagValue, "true", "Expected '" + flag + "' flag be enabled"); 121 } 122 123 private static void verifyIsDisabled(String flag) { 124 HotSpotDiagnosticMXBean hotspotDiagnostic = ManagementFactoryHelper.getDiagnosticMXBean(); 125 String flagValue = hotspotDiagnostic.getVMOption(flag).getValue(); 126 assertEquals(flagValue, "false", "Expected '" + flag + "' flag be disabled"); 127 } 128 129 }