jdk8-mips64-public/hotspot: comparison test/compiler/tiered/LevelTransitionTest.java

-:54e5e3c816d4
+:89dcef434423
+/*
+* 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 / file comparison

comparison: test/compiler/tiered/LevelTransitionTest.java

test/compiler/tiered/LevelTransitionTest.java