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 TestG1ConcMarkStepDurationMillis

    26  * @key gc

    27  * @requires vm.gc=="null" | vm.gc=="G1"

    28  * @summary Tests argument processing for double type flag, G1ConcMarkStepDurationMillis

    29  * @library /testlibrary

    30  * @modules java.base/sun.misc

    31  *          java.management

    32  */

    33 

    34 import jdk.test.lib.*;

    35 import java.util.*;

    36 import java.util.regex.*;

    37 

    38 public class TestG1ConcMarkStepDurationMillis {

    39 

    40   static final int PASS                = 0;

    41   static final int FAIL_IMPROPER_VALUE = 1;

    42   static final int FAIL_OUT_RANGE      = 2;

    43 

    44   static final String DOUBLE_1       = "1.0";

    45   static final String DOUBLE_MAX     = "1.79e+308";

    46 

    47   static final String DOUBLE_NEG_EXP = "1.0e-30";

    48   static final String NEG_DOUBLE_1   = "-1.0";

    49 

    50   static final String DOUBLE_INF     = "1.79e+309";

    51   static final String NEG_DOUBLE_INF = "-1.79e+309";

    52   static final String DOUBLE_NAN     = "abe+309";

    53   static final String WRONG_DOUBLE_1 = "1.79e+308e";

    54   static final String WRONG_DOUBLE_2 = "1.79ee+308";

    55 

    56   public static void main(String args[]) throws Exception {

    57     // Pass cases

    58     runG1ConcMarkStepDurationMillisTest(DOUBLE_1,       PASS);

    59     runG1ConcMarkStepDurationMillisTest(DOUBLE_MAX,     PASS);

    60 

    61     // Fail cases: out of range

    62     runG1ConcMarkStepDurationMillisTest(DOUBLE_NEG_EXP, FAIL_OUT_RANGE);

    63     runG1ConcMarkStepDurationMillisTest(NEG_DOUBLE_1,   FAIL_OUT_RANGE);

    64 

    65     // Fail cases: not double

    66     runG1ConcMarkStepDurationMillisTest(DOUBLE_INF,     FAIL_IMPROPER_VALUE);

    67     runG1ConcMarkStepDurationMillisTest(NEG_DOUBLE_INF, FAIL_IMPROPER_VALUE);

    68     runG1ConcMarkStepDurationMillisTest(DOUBLE_NAN,     FAIL_IMPROPER_VALUE);

    69     runG1ConcMarkStepDurationMillisTest(WRONG_DOUBLE_1, FAIL_IMPROPER_VALUE);

    70     runG1ConcMarkStepDurationMillisTest(WRONG_DOUBLE_2, FAIL_IMPROPER_VALUE);

    71   }

    72 

    73   private static void runG1ConcMarkStepDurationMillisTest(String expectedValue, int expectedResult) throws Exception {

    74     List<String> vmOpts = new ArrayList<>();

    75 

    76     Collections.addAll(vmOpts, "-XX:+UseG1GC", "-XX:G1ConcMarkStepDurationMillis="+expectedValue, "-XX:+PrintFlagsFinal", "-version");

    77 

    78     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));

    79     OutputAnalyzer output = new OutputAnalyzer(pb.start());

    80 

    81     output.shouldHaveExitValue(expectedResult == PASS ? 0 : 1);

    82     String stdout = output.getStdout();

    83     if (expectedResult == PASS) {

    84       checkG1ConcMarkStepDurationMillisConsistency(stdout, expectedValue);

    85     } else if (expectedResult == FAIL_IMPROPER_VALUE) {

    86       output.shouldContain("Improperly specified VM option");

    87     } else if (expectedResult == FAIL_OUT_RANGE) {

    88       output.shouldContain("outside the allowed range");

    89     }

    90   }

    91 

    92   private static void checkG1ConcMarkStepDurationMillisConsistency(String output, String expectedValue) {

    93     double actualValue = getDoubleValue("G1ConcMarkStepDurationMillis", output);

    94 

    95     if (Double.parseDouble(expectedValue) != actualValue) {

    96       throw new RuntimeException(

    97             "Actual G1ConcMarkStepDurationMillis(" + Double.toString(actualValue)

    98             + ") is not equal to expected value(" + expectedValue + ")");

    99     }

   100   }

   101 

   102   public static double getDoubleValue(String flag, String where) {

   103     Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);

   104     if (!m.find()) {

   105       throw new RuntimeException("Could not find value for flag " + flag + " in output string");

   106     }

   107     String match = m.group();

   108     return Double.parseDouble(match.substring(match.lastIndexOf(" ") + 1, match.length()));

   109   }

   110 }