1 /*

     2  * Copyright (c) 2015, 2018, 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 package jdk.jfr.event.runtime;

    26 

    27 import static jdk.test.lib.Asserts.assertTrue;

    28 

    29 import java.nio.file.Paths;

    30 import java.time.Duration;

    31 

    32 import jdk.jfr.Recording;

    33 import jdk.jfr.consumer.RecordedEvent;

    34 import jdk.test.lib.jfr.EventNames;

    35 import jdk.test.lib.jfr.Events;

    36 

    37 /*

    38  * @test

    39  * @bug 8058552

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

    41  * @key jfr

    42  * @summary Test checks that flags of type size_t are being sent to the jfr

    43  * @library /test/lib

    44  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps -XX:+UseG1GC -XX:+UseTLAB -XX:MinTLABSize=3k -XX:OldSize=30m -XX:YoungPLABSize=3k -XX:MaxDirectMemorySize=5M  jdk.jfr.event.runtime.TestSizeTFlags

    45  */

    46 public class TestSizeTFlags {

    47     private static final String EVENT_NAME = EventNames.UnsignedLongFlag;

    48     private static final int NUMBER_OF_FLAGS_TO_CHECK = 4;

    49     private static final long MIN_TLAB_SIZE_FLAG_VALUE = 3*1024L;

    50     private static final long OLD_SIZE_FLAG_VALUE = 30*1024*1024L;

    51     private static final long YOUNG_PLAB_SIZE_FLAG_VALUE = 3*1024L;

    52     private static final long MAX_DIRECT_MEMORY_SIZE_FLAG_VALUE = 5*1024*1024L;

    53 

    54     // Test run java with some of the flags of type size_t.

    55     // Goals are

    56     //  - to check that flags are reported to the jfr;

    57     //  - to make sure values are as expected.

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

    59         final boolean[] flagsFoundWithExpectedValue = new boolean[NUMBER_OF_FLAGS_TO_CHECK];

    60         Recording recording = null;

    61         try {

    62             recording = new Recording();

    63             recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));

    64             recording.start();

    65             recording.stop();

    66 

    67             for (final RecordedEvent event : Events.fromRecording(recording)) {

    68                 final String recordedFlagName = Events.assertField(event, "name").getValue();

    69                 final long value = Events.assertField(event, "value").getValue();

    70                 switch (recordedFlagName) {

    71                     case "MinTLABSize": {

    72                         flagsFoundWithExpectedValue[0] = MIN_TLAB_SIZE_FLAG_VALUE == value;

    73                         continue;

    74                     }

    75                     case "OldSize": {

    76                         flagsFoundWithExpectedValue[1] = OLD_SIZE_FLAG_VALUE == value;

    77                         continue;

    78                     }

    79                     case "YoungPLABSize": {

    80                         flagsFoundWithExpectedValue[2] = YOUNG_PLAB_SIZE_FLAG_VALUE == value;

    81                         continue;

    82                     }

    83                     case "MaxDirectMemorySize": {

    84                         flagsFoundWithExpectedValue[3] = MAX_DIRECT_MEMORY_SIZE_FLAG_VALUE == value;

    85                         continue;

    86                     }

    87                     default: {

    88                         continue;

    89                     }

    90                 }

    91             }

    92 

    93             for (int i = 0; i < flagsFoundWithExpectedValue.length; ++i) {

    94                 assertTrue(flagsFoundWithExpectedValue[i], "Flag not found or value error!");

    95             }

    96 

    97         } catch (Throwable e) {

    98             if (recording != null) {

    99                 recording.dump(Paths.get("failed.jfr"));

   100             }

   101             throw e;

   102         } finally {

   103             if (recording != null) {

   104                 recording.close();

   105             }

   106         }

   107     }

   108 }