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.
   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 /*
  26  * @test OverloadCompileQueueTest
  27  * @summary stressing code cache by overloading compile queues
  28  * @library /test/lib /
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  *
  32  * @ignore 8071905
  33  * @build sun.hotspot.WhiteBox
  34  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  35  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI
  38  *                   -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method
  39  *                   -XX:-SegmentedCodeCache
  40  *                   compiler.codecache.stress.OverloadCompileQueueTest
  41  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  42  *                   -XX:+WhiteBoxAPI
  43  *                   -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method
  44  *                   -XX:+SegmentedCodeCache
  45  *                   compiler.codecache.stress.OverloadCompileQueueTest
  46  */
  47 
  48 package compiler.codecache.stress;
  49 
  50 import jdk.test.lib.Platform;
  51 
  52 import java.lang.reflect.Method;
  53 import java.util.stream.IntStream;
  54 
  55 public class OverloadCompileQueueTest implements Runnable {
  56     private static final int MAX_SLEEP = 10000;
  57     private static final String METHOD_TO_ENQUEUE = "method";
  58     private static final int LEVEL_SIMPLE = 1;
  59     private static final int LEVEL_FULL_OPTIMIZATION = 4;
  60     private static final boolean TIERED_COMPILATION
  61             = Helper.WHITE_BOX.getBooleanVMFlag("TieredCompilation");
  62     private static final int TIERED_STOP_AT_LEVEL
  63             = Helper.WHITE_BOX.getIntxVMFlag("TieredStopAtLevel").intValue();
  64     private static final int[] AVAILABLE_LEVELS;
  65     static {
  66         if (TIERED_COMPILATION) {
  67             AVAILABLE_LEVELS = IntStream
  68                     .rangeClosed(LEVEL_SIMPLE, TIERED_STOP_AT_LEVEL)
  69                     .toArray();
  70         } else if (Platform.isServer()) {
  71             AVAILABLE_LEVELS = new int[] { LEVEL_FULL_OPTIMIZATION };
  72         } else if (Platform.isClient() || Platform.isMinimal()) {
  73             AVAILABLE_LEVELS = new int[] { LEVEL_SIMPLE };
  74         } else {
  75             throw new Error("TESTBUG: unknown VM: " + Platform.vmName);
  76         }
  77     }
  78 
  79     public static void main(String[] args) {
  80         if (Platform.isInt()) {
  81             throw new Error("TESTBUG: test can not be run in interpreter");
  82         }
  83         new CodeCacheStressRunner(new OverloadCompileQueueTest()).runTest();
  84     }
  85 
  86     public OverloadCompileQueueTest() {
  87         Helper.startInfiniteLoopThread(this::lockUnlock, 100L);
  88     }
  89 
  90     @Override
  91     public void run() {
  92         Helper.TestCase obj = Helper.TestCase.get();
  93         Class clazz = obj.getClass();
  94         Method mEnqueue;
  95         try {
  96             mEnqueue = clazz.getMethod(METHOD_TO_ENQUEUE);
  97         } catch (NoSuchMethodException | SecurityException e) {
  98             throw new Error(String.format(
  99                     "TESTBUG: cannot get method '%s' of class %s",
 100                     METHOD_TO_ENQUEUE, clazz.getName()), e);
 101         }
 102         for (int compLevel : AVAILABLE_LEVELS) {
 103             Helper.WHITE_BOX.enqueueMethodForCompilation(mEnqueue, compLevel);
 104         }
 105     }
 106 
 107     private void lockUnlock() {
 108         try {
 109             int sleep = Helper.RNG.nextInt(MAX_SLEEP);
 110             Helper.WHITE_BOX.lockCompilation();
 111             Thread.sleep(sleep);
 112         } catch (InterruptedException e) {
 113             throw new Error("TESTBUG: lockUnlocker thread was unexpectedly interrupted", e);
 114         } finally {
 115             Helper.WHITE_BOX.unlockCompilation();
 116         }
 117     }
 118 
 119 }