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 }