1 /*

     2  * Copyright (c) 2014, 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 import java.lang.reflect.Method;

    26 import java.util.stream.IntStream;

    27 

    28 import com.oracle.java.testlibrary.Platform;

    29 

    30 /*

    31  * @test OverloadCompileQueueTest

    32  * @library /testlibrary /../../test/lib

    33  * @build OverloadCompileQueueTest

    34  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    35  *                              sun.hotspot.WhiteBox$WhiteBoxPermission

    36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    37  *                   -XX:CompileCommand=dontinline,Helper$TestCase::method

    38  *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache OverloadCompileQueueTest

    39  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    40  *                   -XX:CompileCommand=dontinline,Helper$TestCase::method

    41  *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache OverloadCompileQueueTest

    42  * @summary stressing code cache by overloading compile queues

    43  */

    44 public class OverloadCompileQueueTest implements Runnable {

    45     private static final int MAX_SLEEP = 10000;

    46     private static final String METHOD_TO_ENQUEUE = "method";

    47     private static final int LEVEL_SIMPLE = 1;

    48     private static final int LEVEL_FULL_OPTIMIZATION = 4;

    49     private static final boolean INTERPRETED

    50             = System.getProperty("java.vm.info").startsWith("interpreted ");

    51     private static final boolean TIERED_COMPILATION

    52             = Helper.WHITE_BOX.getBooleanVMFlag("TieredCompilation");

    53     private static final int TIERED_STOP_AT_LEVEL

    54             = Helper.WHITE_BOX.getIntxVMFlag("TieredStopAtLevel").intValue();

    55     private static final int[] AVAILABLE_LEVELS;

    56     static {

    57         if (TIERED_COMPILATION) {

    58             AVAILABLE_LEVELS = IntStream

    59                     .rangeClosed(LEVEL_SIMPLE, TIERED_STOP_AT_LEVEL)

    60                     .toArray();

    61         } else if (Platform.isServer()) {

    62             AVAILABLE_LEVELS = new int[] { LEVEL_FULL_OPTIMIZATION };

    63         } else if (Platform.isClient() || Platform.isMinimal()) {

    64             AVAILABLE_LEVELS = new int[] { LEVEL_SIMPLE };

    65         } else {

    66             throw new Error(String.format(

    67                     "TESTBUG: unknown VM: %s", System.getProperty("java.vm.name")));

    68         }

    69     }

    70 

    71     public static void main(String[] args) {

    72         if (INTERPRETED) {

    73             System.err.println("Test isn't applicable for interpreter. Skip test.");

    74             return;

    75         }

    76         new CodeCacheStressRunner(new OverloadCompileQueueTest()).runTest();

    77     }

    78 

    79     public OverloadCompileQueueTest() {

    80         Helper.startInfiniteLoopThread(this::lockUnlock);

    81     }

    82 

    83     @Override

    84     public void run() {

    85         Helper.TestCase obj = Helper.TestCase.get();

    86         Class clazz = obj.getClass();

    87         Method mEnqueue;

    88         try {

    89             mEnqueue = clazz.getMethod(METHOD_TO_ENQUEUE);

    90         } catch (NoSuchMethodException | SecurityException e) {

    91             throw new Error(String.format(

    92                     "TESTBUG: cannot get method '%s' of class %s",

    93                     METHOD_TO_ENQUEUE, clazz.getName()), e);

    94         }

    95         for (int compLevel : AVAILABLE_LEVELS) {

    96             Helper.WHITE_BOX.enqueueMethodForCompilation(mEnqueue, compLevel);

    97         }

    98     }

    99 

   100     private void lockUnlock() {

   101         try {

   102             Helper.WHITE_BOX.lockCompilation();

   103             Thread.sleep(Helper.RNG.nextInt(MAX_SLEEP));

   104         } catch (InterruptedException e) {

   105             throw new Error("TESTBUG: lockUnlocker thread was unexpectedly interrupted", e);

   106         } finally {

   107             Helper.WHITE_BOX.unlockCompilation();

   108         }

   109     }

   110 

   111 }