Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 import sun.hotspot.WhiteBox;

 import sun.management.ManagementFactoryHelper;

 import com.sun.management.HotSpotDiagnosticMXBean;

 import java.lang.reflect.Method;

 /*

  * @author igor.ignatyev@oracle.com

  */

 public abstract class CompilerWhiteBoxTest {

     protected static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();

     protected static final Method METHOD = getMethod("method");

     protected static final int COMPILE_THRESHOLD

             = Integer.parseInt(getVMOption("CompileThreshold", "10000"));

     protected static final boolean BACKGROUND_COMPILATION

             = Boolean.valueOf(getVMOption("BackgroundCompilation", "true"));

     protected static Method getMethod(String name) {

         try {

             return CompilerWhiteBoxTest.class.getDeclaredMethod(name);

         } catch (NoSuchMethodException | SecurityException e) {

             throw new RuntimeException(

                     "exception on getting method " + name, e);

         }

     }

     protected static String getVMOption(String name) {

         String result;

         HotSpotDiagnosticMXBean diagnostic

                 = ManagementFactoryHelper.getDiagnosticMXBean();

         result = diagnostic.getVMOption(name).getValue();

         return result;

     }

     protected static String getVMOption(String name, String defaultValue) {

         String result = getVMOption(name);

         return result == null ? defaultValue : result;

     }

     protected final void runTest() throws RuntimeException {

         if (ManagementFactoryHelper.getCompilationMXBean() == null) {

             System.err.println(

                     "Warning: test is not applicable in interpreted mode");

             return;

         }

         System.out.println("at test's start:");

         printInfo(METHOD);

         try {

             test();

         } catch (Exception e) {

             System.out.printf("on exception '%s':", e.getMessage());

             printInfo(METHOD);

             e.printStackTrace();

             throw new RuntimeException(e);

         }

         System.out.println("at test's end:");

         printInfo(METHOD);

     }

     protected static void checkNotCompiled(Method method) {

         if (WHITE_BOX.isMethodCompiled(method)) {

             throw new RuntimeException(method + " must be not compiled");

         }

         if (WHITE_BOX.getMethodCompilationLevel(method) != 0) {

             throw new RuntimeException(method + " comp_level must be == 0");

         }

     }

     protected static void checkCompiled(Method method)

             throws InterruptedException {

         final long start = System.currentTimeMillis();

         waitBackgroundCompilation(method);

         if (WHITE_BOX.isMethodQueuedForCompilation(method)) {

             System.err.printf("Warning: %s is still in queue after %dms%n",

                     method, System.currentTimeMillis() - start);

             return;

         }

         if (!WHITE_BOX.isMethodCompiled(method)) {

             throw new RuntimeException(method + " must be compiled");

         }

         if (WHITE_BOX.getMethodCompilationLevel(method) == 0) {

             throw new RuntimeException(method + " comp_level must be != 0");

         }

     }

     protected static void waitBackgroundCompilation(Method method)

             throws InterruptedException {

         if (!BACKGROUND_COMPILATION) {

             return;

         }

         final Object obj = new Object();

         synchronized (obj) {

             for (int i = 0; i < 10; ++i) {

                 if (!WHITE_BOX.isMethodQueuedForCompilation(method)) {

                     break;

                 }

                 obj.wait(1000);

             }

         }

     }

     protected static void printInfo(Method method) {

         System.out.printf("%n%s:%n", method);

         System.out.printf("\tcompilable:\t%b%n",

                 WHITE_BOX.isMethodCompilable(method));

         System.out.printf("\tcompiled:\t%b%n",

                 WHITE_BOX.isMethodCompiled(method));

         System.out.printf("\tcomp_level:\t%d%n",

                 WHITE_BOX.getMethodCompilationLevel(method));

         System.out.printf("\tin_queue:\t%b%n",

                 WHITE_BOX.isMethodQueuedForCompilation(method));

         System.out.printf("compile_queues_size:\t%d%n%n",

                 WHITE_BOX.getCompileQueuesSize());

     }

     protected abstract void test() throws Exception;

     protected final int compile() {

         int result = 0;

         int count = Math.max(COMPILE_THRESHOLD, 150000);

         for (int i = 0; i < count; ++i) {

             result += method();

         }

         System.out.println("method was invoked " + count + " times");

         return result;

     }

     protected int method() {

         return 42;

     }

 }