jdk8-mips64-public/hotspot: test/compiler/tiered/LevelTransitionTest.java@89dcef434423 (annotated)

test/compiler/tiered/LevelTransitionTest.java@89dcef434423 (annotated)

test/compiler/tiered/LevelTransitionTest.java

Mon, 03 Jun 2019 16:14:54 +0100

author: xliu
date: Mon, 03 Jun 2019 16:14:54 +0100
changeset 9689: 89dcef434423
permissions: -rw-r--r--

8059575: JEP-JDK-8043304: Test task: Tiered Compilation level transition tests
Summary: Includes compile_id addition from JDK-8054492
Reviewed-by: andrew

 /*
  * Copyright (c) 2014, 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 java.lang.reflect.Executable;
 import java.lang.reflect.Method;
 import java.util.Objects;
 import java.util.concurrent.Callable;
 /**
  * @test LevelTransitionTest
  * @library /testlibrary /testlibrary/whitebox /compiler/whitebox
  * @build TransitionsTestExecutor LevelTransitionTest
  * @run main ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
  * @run main/othervm/timeout=240 -Xmixed -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  *                   -XX:+WhiteBoxAPI -XX:+TieredCompilation
  *                   -XX:CompileCommand=compileonly,SimpleTestCase$Helper::*
  *                   -XX:CompileCommand=compileonly,ExtendedTestCase$CompileMethodHolder::*
  *                   TransitionsTestExecutor LevelTransitionTest
  * @summary Test the correctness of compilation level transitions for different methods
  */
 public class LevelTransitionTest extends TieredLevelsTest {
     /** Shows if method was profiled by being executed on levels 2 or 3 */
     protected boolean isMethodProfiled;
     private int transitionCount;
     public static void main(String[] args) throws Throwable {
         assert (!CompilerWhiteBoxTest.skipOnTieredCompilation(false));
         CompilerWhiteBoxTest.main(LevelTransitionTest::new, args);
         // run extended test cases
         for (TestCase testCase : ExtendedTestCase.values()) {
             new LevelTransitionTest(testCase).runTest();
         }
     }
     protected LevelTransitionTest(TestCase testCase) {
         super(testCase);
         isMethodProfiled = testCase.isOsr(); // OSR methods were already profiled by warmup
         transitionCount = 0;
     }
     @Override
     protected void test() throws Exception {
         checkTransitions();
         deoptimize();
         printInfo();
         if (testCase.isOsr()) {
             // deoptimization makes the following transitions be unstable
             // methods go to level 3 before 4 because of uncommon_trap and reprofile
             return;
         }
         checkTransitions();
     }
     /**
      * Makes and verifies transitions between compilation levels
      */
     protected void checkTransitions() {
         checkNotCompiled();
         boolean finish = false;
         while (!finish) {
             System.out.printf("Level transition #%d%n", ++transitionCount);
             int newLevel;
             int current = getCompLevel();
             int expected = getNextLevel(current);
             if (current == expected) {
                 // if we are on expected level, just execute it more
                 // to ensure that the level won't change
                 System.out.printf("Method %s is already on expected level %d%n", method, expected);
                 compile();
                 newLevel = getCompLevel();
                 finish = true;
             } else {
                 newLevel = changeCompLevel();
                 finish = false;
             }
             System.out.printf("Method %s is compiled on level %d. Expected level is %d%n", method, newLevel, expected);
             checkLevel(expected, newLevel);
             printInfo();
         };
     }
     /**
      * Gets next expected level for the test case on each transition.
      *
      * @param currentLevel a level the test case is compiled on
      * @return expected compilation level
      */
     protected int getNextLevel(int currentLevel) {
         int nextLevel = currentLevel;
         switch (currentLevel) {
             case CompilerWhiteBoxTest.COMP_LEVEL_NONE:
                 nextLevel = isMethodProfiled ? CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION
                         : CompilerWhiteBoxTest.COMP_LEVEL_FULL_PROFILE;
                 break;
             case CompilerWhiteBoxTest.COMP_LEVEL_LIMITED_PROFILE:
             case CompilerWhiteBoxTest.COMP_LEVEL_FULL_PROFILE:
                 nextLevel = CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION;
                 isMethodProfiled = true;
                 break;
         }
         nextLevel = isTrivial() ? CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE : nextLevel;
         return Math.min(nextLevel, CompilerWhiteBoxTest.TIERED_STOP_AT_LEVEL);
     }
     /**
      * Determines if tested method should be handled as trivial
      *
      * @return {@code true} for trivial methods, {@code false} otherwise
      */
     protected boolean isTrivial() {
         return testCase == ExtendedTestCase.ACCESSOR_TEST
                 || testCase == SimpleTestCase.METHOD_TEST
                 || testCase == SimpleTestCase.STATIC_TEST
                 || (testCase == ExtendedTestCase.TRIVIAL_CODE_TEST && isMethodProfiled);
     }
     /**
      * Invokes {@linkplain #method} until its compilation level is changed.
      * Note that if the level won't change, it will be an endless loop
      *
      * @return compilation level the {@linkplain #method} was compiled on
      */
     protected int changeCompLevel() {
         int currentLevel = getCompLevel();
         int newLevel = currentLevel;
         int result = 0;
         while (currentLevel == newLevel) {
             result = compile(1);
             if (WHITE_BOX.isMethodCompiled(method, testCase.isOsr())) {
                 newLevel = getCompLevel();
             }
         }
         return newLevel;
     }
     protected static class Helper {
         /**
          * Gets method from a specified class using its name
          *
          * @param aClass type method belongs to
          * @param name   the name of the method
          * @return {@link Method} that represents corresponding class method
          */
         public static Method getMethod(Class<?> aClass, String name) {
             Method method;
             try {
                 method = aClass.getDeclaredMethod(name);
             } catch (NoSuchMethodException e) {
                 throw new Error("TESTBUG: Unable to get method " + name, e);
             }
             return method;
         }
         /**
          * Gets {@link Callable} that invokes given method from the given object
          *
          * @param object the object the specified method is invoked from
          * @param name   the name of the method
          */
         public static Callable<Integer> getCallable(Object object, String name) {
             Method method = getMethod(object.getClass(), name);
             return () -> {
                 try {
                     return Objects.hashCode(method.invoke(object));
                 } catch (ReflectiveOperationException e) {
                     throw new Error("TESTBUG: Invocation failure", e);
                 }
             };
         }
     }
 }
 enum ExtendedTestCase implements CompilerWhiteBoxTest.TestCase {
     ACCESSOR_TEST("accessor"),
     NONTRIVIAL_METHOD_TEST("nonTrivialMethod"),
     TRIVIAL_CODE_TEST("trivialCode");
     private final Executable executable;
     private final Callable<Integer> callable;
     @Override
     public Executable getExecutable() {
         return executable;
     }
     @Override
     public Callable<Integer> getCallable() {
         return callable;
     }
     @Override
     public boolean isOsr() {
         return false;
     }
     private ExtendedTestCase(String methodName) {
         this.executable = LevelTransitionTest.Helper.getMethod(CompileMethodHolder.class, methodName);
         this.callable = LevelTransitionTest.Helper.getCallable(new CompileMethodHolder(), methodName);
     }
     private static class CompileMethodHolder {
         private final int iter = 10;
         private int field = 42;
         /** Non-trivial method for threshold policy: contains loops */
         public int nonTrivialMethod() {
             int acc = 0;
             for (int i = 0; i < iter; i++) {
                 acc += i;
             }
             return acc;
         }
         /** Field accessor method */
         public int accessor() {
             return field;
         }
         /** Method considered as trivial by amount of code */
         public int trivialCode() {
             int var = 0xBAAD_C0DE;
             var *= field;
             return var;
         }
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/compiler/tiered/LevelTransitionTest.java@89dcef434423 (annotated)

test/compiler/tiered/LevelTransitionTest.java