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 java.lang.management.ManagementFactory;
  27 import com.sun.management.HotSpotDiagnosticMXBean;
  28 import jdk.testlibrary.OutputAnalyzer;
  29 import static jdk.testlibrary.Platform.isSolaris;
  30 import static jdk.testlibrary.Asserts.assertEquals;
  31 import static jdk.testlibrary.Asserts.assertNotEquals;
  32 import static jdk.testlibrary.Asserts.assertTrue;
  33 
  34 /**
  35  * @test
  36  * @summary The test sanity checks 'jinfo -flag' option.
  37  * @library /lib/testlibrary
  38  * @modules java.management
  39  * @build jdk.testlibrary.* JInfoHelper
  40  * @run main/othervm -XX:+HeapDumpOnOutOfMemoryError JInfoRunningProcessFlagTest
  41  */
  42 public class JInfoRunningProcessFlagTest {
  43 
  44     public static void main(String[] args) throws Exception {
  45         testFlag();
  46         testFlagPlus();
  47         testFlagMinus();
  48         testFlagEqual();
  49 
  50         testInvalidFlag();
  51 
  52         testSolarisSpecificFlag();
  53     }
  54 
  55     private static void testFlag() throws Exception {
  56         OutputAnalyzer output = JInfoHelper.jinfo("-flag", "HeapDumpOnOutOfMemoryError");
  57         output.shouldHaveExitValue(0);
  58         assertTrue(output.getStderr().isEmpty(), "'jinfo -flag HeapDumpOnOutOfMemoryError' stderr should be empty");
  59         output.shouldContain("+HeapDumpOnOutOfMemoryError");
  60     }
  61 
  62     private static void testFlagPlus() throws Exception {
  63         OutputAnalyzer output = JInfoHelper.jinfo("-flag", "+HeapDumpOnOutOfMemoryError");
  64         output.shouldHaveExitValue(0);
  65         output = JInfoHelper.jinfo("-flag", "HeapDumpOnOutOfMemoryError");
  66         output.shouldHaveExitValue(0);
  67         output.shouldContain("+HeapDumpOnOutOfMemoryError");
  68         verifyIsEnabled("HeapDumpOnOutOfMemoryError");
  69     }
  70 
  71     private static void testFlagMinus() throws Exception {
  72         OutputAnalyzer output = JInfoHelper.jinfo("-flag", "-HeapDumpOnOutOfMemoryError");
  73         output.shouldHaveExitValue(0);
  74         output = JInfoHelper.jinfo("-flag", "HeapDumpOnOutOfMemoryError");
  75         output.shouldHaveExitValue(0);
  76         output.shouldContain("-HeapDumpOnOutOfMemoryError");
  77         verifyIsDisabled("HeapDumpOnOutOfMemoryError");
  78     }
  79 
  80     private static void testFlagEqual() throws Exception {
  81         OutputAnalyzer output = JInfoHelper.jinfo("-flag", "HeapDumpOnOutOfMemoryError=1");
  82         output.shouldHaveExitValue(0);
  83         output = JInfoHelper.jinfo("-flag", "HeapDumpOnOutOfMemoryError");
  84         output.shouldHaveExitValue(0);
  85         output.shouldContain("+HeapDumpOnOutOfMemoryError");
  86         verifyIsEnabled("HeapDumpOnOutOfMemoryError");
  87     }
  88 
  89     private static void testInvalidFlag() throws Exception {
  90         OutputAnalyzer output = JInfoHelper.jinfo("-flag", "monkey");
  91         assertNotEquals(output.getExitValue(), 0, "A non-zero exit code should be returned for invalid flag");
  92     }
  93 
  94     private static void testSolarisSpecificFlag() throws Exception {
  95         if (!isSolaris())
  96             return;
  97 
  98         OutputAnalyzer output = JInfoHelper.jinfo("-flag", "+ExtendedDTraceProbes");
  99         output.shouldHaveExitValue(0);
 100         output = JInfoHelper.jinfo();
 101         output.shouldContain("+ExtendedDTraceProbes");
 102         verifyIsEnabled("ExtendedDTraceProbes");
 103 
 104         output = JInfoHelper.jinfo("-flag", "-ExtendedDTraceProbes");
 105         output.shouldHaveExitValue(0);
 106         output = JInfoHelper.jinfo();
 107         output.shouldContain("-ExtendedDTraceProbes");
 108         verifyIsDisabled("ExtendedDTraceProbes");
 109 
 110         output = JInfoHelper.jinfo("-flag", "ExtendedDTraceProbes");
 111         output.shouldContain("-ExtendedDTraceProbes");
 112         output.shouldHaveExitValue(0);
 113     }
 114 
 115     private static void verifyIsEnabled(String flag) {
 116         HotSpotDiagnosticMXBean hotspotDiagnostic =
 117                 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
 118         String flagValue = hotspotDiagnostic.getVMOption(flag).getValue();
 119         assertEquals(flagValue, "true", "Expected '" + flag + "' flag be enabled");
 120     }
 121 
 122     private static void verifyIsDisabled(String flag) {
 123         HotSpotDiagnosticMXBean hotspotDiagnostic =
 124                 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
 125         String flagValue = hotspotDiagnostic.getVMOption(flag).getValue();
 126         assertEquals(flagValue, "false", "Expected '" + flag + "' flag be disabled");
 127     }
 128 
 129 }