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提交 b9fd5a85 编写于 作者: K kshefov
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8057719: Develop new tests for LambdaForm Reduction and Caching feature 

Reviewed-by: iignatyev, vlivanov, psandoz
上级 5cf2c79c
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test/java/lang/invoke/LFCaching/LFCachingTestCase.java 0 → 100644
浏览文件 @ b9fd5a85
/*
* 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.invoke.MethodHandle;
import java.lang.reflect.InvocationTargetException;
/**
* Abstract class for lambda forms caching testing.
*
* @author kshefov
*/
public abstract class LFCachingTestCase extends LambdaFormTestCase {
/**
* Constructor for lambda forms caching test case.
*
* @param testMethod A method from {@code j.l.i.MethodHandles} class that
* returns a {@code j.l.i.MethodHandle} instance.
*/
protected LFCachingTestCase(TestMethods testMethod) {
super(testMethod);
}
/**
* Checks that the lambda forms of the two adapter method handles adapter1
* and adapter2 are the same.
*
* @param adapter1 First method handle.
* @param adapter2 Second method handle.
*/
public void checkLFCaching(MethodHandle adapter1, MethodHandle adapter2) {
try {
if (!adapter1.type().equals(adapter2.type())) {
throw new Error("TESTBUG: Types of the two method handles are not the same");
}
Object lambdaForm0 = LambdaFormTestCase.INTERNAL_FORM.invoke(adapter1);
Object lambdaForm1 = LambdaFormTestCase.INTERNAL_FORM.invoke(adapter2);
if (lambdaForm0 == null || lambdaForm1 == null) {
throw new Error("Unexpected error: One or both lambda forms of the method handles are null");
}
if (lambdaForm0 != lambdaForm1) {
System.err.println("Lambda form 0 toString is:");
System.err.println(lambdaForm0);
System.err.println("Lambda form 1 toString is:");
System.err.println(lambdaForm1);
throw new AssertionError("Error: Lambda forms of the two method handles"
+ " are not the same. LF cahing does not work");
}
} catch (IllegalAccessException | IllegalArgumentException |
SecurityException | InvocationTargetException ex) {
throw new Error("Unexpected exception: ", ex);
}
}
}
test/java/lang/invoke/LFCaching/LFGarbageCollectedTest.java 0 → 100644
浏览文件 @ b9fd5a85
/*
* 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.
*/
/*
* @test LFGarbageCollectedTest
* @bug 8046703
* @summary Test verifies that lambda forms are garbage collected
* @author kshefov
* @library /lib/testlibrary/jsr292 /lib/testlibrary
* @build TestMethods
* @build LambdaFormTestCase
* @build LFGarbageCollectedTest
* @run main/othervm/timeout=600 -Djava.lang.invoke.MethodHandle.USE_LF_EDITOR=true -DtestLimit=150 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI LFGarbageCollectedTest
*/
import java.lang.invoke.MethodHandle;
import java.lang.ref.PhantomReference;
import java.lang.ref.ReferenceQueue;
import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.Map;
/**
* Lambda forms garbage collection test class.
*/
public final class LFGarbageCollectedTest extends LambdaFormTestCase {
/**
* Constructor for a lambda forms garbage collection test case.
*
* @param testMethod A method from {@code j.l.i.MethodHandles} class that
* returns a {@code j.l.i.MethodHandle} instance.
*/
public LFGarbageCollectedTest(TestMethods testMethod) {
super(testMethod);
}
@Override
public void doTest() {
try {
Map<String, Object> data = getTestMethod().getTestCaseData();
MethodHandle adapter;
try {
adapter = getTestMethod().getTestCaseMH(data, TestMethods.Kind.ONE);
} catch (NoSuchMethodException ex) {
throw new Error("Unexpected exception: ", ex);
}
Object lambdaForm = LambdaFormTestCase.INTERNAL_FORM.invoke(adapter);
if (lambdaForm == null) {
throw new Error("Unexpected error: Lambda form of the method handle is null");
}
ReferenceQueue rq = new ReferenceQueue();
PhantomReference ph = new PhantomReference(lambdaForm, rq);
lambdaForm = null;
data = null;
adapter = null;
for (int i = 0; i < 1000 && !ph.isEnqueued(); i++) {
System.gc();
}
if (!ph.isEnqueued()) {
throw new AssertionError("Error: Lambda form is not garbage collected");
}
} catch (IllegalAccessException | IllegalArgumentException |
InvocationTargetException ex) {
throw new Error("Unexpected exception: ", ex);
}
}
/**
* Main routine for lambda forms garbage collection test.
*
* @param args Accepts no arguments.
*/
public static void main(String[] args) {
// The "identity" and "constant" methods should be removed from this test,
// because their lambda forms are stored in a static filed and are not GC'ed.
// There can be only 5 such LFs for each method, so no memory leak happens.
EnumSet<TestMethods> testMethods = EnumSet.complementOf(EnumSet.of(TestMethods.IDENTITY, TestMethods.CONSTANT));
LambdaFormTestCase.runTests(LFGarbageCollectedTest::new, testMethods);
}
}
test/java/lang/invoke/LFCaching/LFMultiThreadCachingTest.java 0 → 100644
浏览文件 @ b9fd5a85
/*
* 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.
*/
/*
* @test LFMultiThreadCachingTest
* @bug 8046703
* @summary Test verifies that lambda forms are cached when run with multiple threads
* @author kshefov
* @library /lib/testlibrary/jsr292 /lib/testlibrary
* @build TestMethods
* @build LambdaFormTestCase
* @build LFCachingTestCase
* @build LFMultiThreadCachingTest
* @run main/othervm/timeout=300 -Djava.lang.invoke.MethodHandle.USE_LF_EDITOR=true LFMultiThreadCachingTest
*/
import java.lang.invoke.MethodHandle;
import java.util.EnumSet;
import java.util.Map;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.CyclicBarrier;
/**
* Multiple threaded lambda forms caching test class.
*/
public final class LFMultiThreadCachingTest extends LFCachingTestCase {
private static final TestMethods.Kind[] KINDS;
static {
EnumSet<TestMethods.Kind> set = EnumSet.complementOf(EnumSet.of(TestMethods.Kind.EXCEPT));
KINDS = set.toArray(new TestMethods.Kind[set.size()]);
if (KINDS.length < 2) {
throw new Error("TESTBUG: KINDS.length[" + KINDS.length + "] should be at least 2");
}
}
private static final int CORES = Math.max(KINDS.length, Runtime.getRuntime().availableProcessors());
/**
* Constructor a for multiple threaded lambda forms caching test case.
*
* @param testMethod A method from {@code j.l.i.MethodHandles} class that
* returns a {@code j.l.i.MethodHandle} instance.
*/
public LFMultiThreadCachingTest(TestMethods testMethod) {
super(testMethod);
}
@Override
public void doTest() {
Map<String, Object> data = getTestMethod().getTestCaseData();
ConcurrentLinkedQueue<MethodHandle> adapters = new ConcurrentLinkedQueue<>();
CyclicBarrier begin = new CyclicBarrier(CORES);
CountDownLatch end = new CountDownLatch(CORES);
for (int i = 0; i < CORES; ++i) {
TestMethods.Kind kind = KINDS[i % KINDS.length];
new Thread(() -> {
try {
begin.await();
adapters.add(getTestMethod().getTestCaseMH(data, kind));
} catch (InterruptedException | BrokenBarrierException | IllegalAccessException | NoSuchMethodException ex) {
throw new Error("Unexpected exception: ", ex);
} finally {
end.countDown();
}
}).start();
}
try {
end.await();
} catch (InterruptedException ex) {
throw new Error("Unexpected exception: ", ex);
}
if (adapters.size() < CORES) {
throw new Error("adapters size[" + adapters.size() + "] is less than " + CORES);
}
MethodHandle prev = adapters.poll();
for (MethodHandle current : adapters) {
checkLFCaching(prev, current);
prev = current;
}
}
/**
* Main routine for multiple threaded lambda forms caching test.
*
* @param args Accepts no arguments.
*/
public static void main(String[] args) {
LambdaFormTestCase.runTests(LFMultiThreadCachingTest::new, EnumSet.allOf(TestMethods.class));
}
}
test/java/lang/invoke/LFCaching/LFSingleThreadCachingTest.java 0 → 100644
浏览文件 @ b9fd5a85
/*
* 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.
*/
/*
* @test LFSingleThreadCachingTest
* @bug 8046703
* @summary Test verifies that lambda forms are cached when run with single thread
* @author kshefov
* @library /lib/testlibrary/jsr292 /lib/testlibrary
* @build TestMethods
* @build LambdaFormTestCase
* @build LFCachingTestCase
* @build LFSingleThreadCachingTest
* @run main/othervm/timeout=300 -Djava.lang.invoke.MethodHandle.USE_LF_EDITOR=true LFSingleThreadCachingTest
*/
import java.lang.invoke.MethodHandle;
import java.util.EnumSet;
import java.util.Map;
/**
* Single threaded lambda forms caching test class.
*/
public final class LFSingleThreadCachingTest extends LFCachingTestCase {
/**
* Constructor for a single threaded lambda forms caching test case.
*
* @param testMethod A method from {@code j.l.i.MethodHandles} class that
* returns a {@code j.l.i.MethodHandle} instance.
*/
public LFSingleThreadCachingTest(TestMethods testMethod) {
super(testMethod);
}
@Override
public void doTest() {
MethodHandle adapter1;
MethodHandle adapter2;
Map<String, Object> data = getTestMethod().getTestCaseData();
try {
adapter1 = getTestMethod().getTestCaseMH(data, TestMethods.Kind.ONE);
adapter2 = getTestMethod().getTestCaseMH(data, TestMethods.Kind.TWO);
} catch (NoSuchMethodException | IllegalAccessException ex) {
throw new Error("Unexpected exception: ", ex);
}
checkLFCaching(adapter1, adapter2);
}
/**
* Main routine for single threaded lambda forms caching test.
*
* @param args Accepts no arguments.
*/
public static void main(String[] args) {
LambdaFormTestCase.runTests(LFSingleThreadCachingTest::new, EnumSet.allOf(TestMethods.class));
}
}
test/java/lang/invoke/LFCaching/LambdaFormTestCase.java 0 → 100644
浏览文件 @ b9fd5a85
/*
* 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 com.oracle.testlibrary.jsr292.Helper;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.function.Function;
/**
* Lambda forms caching test case class. Contains all necessary test routines to
* test lambda forms caching in method handles returned by methods of
* MethodHandles class.
*
* @author kshefov
*/
public abstract class LambdaFormTestCase {
private final static String METHOD_HANDLE_CLASS_NAME = "java.lang.invoke.MethodHandle";
private final static String INTERNAL_FORM_METHOD_NAME = "internalForm";
/**
* Reflection link to {@code j.l.i.MethodHandle.internalForm} method. It is
* used to get a lambda form from a method handle.
*/
protected final static Method INTERNAL_FORM;
static {
try {
Class mhClass = Class.forName(METHOD_HANDLE_CLASS_NAME);
INTERNAL_FORM = mhClass.getDeclaredMethod(INTERNAL_FORM_METHOD_NAME);
INTERNAL_FORM.setAccessible(true);
} catch (Exception ex) {
throw new Error("Unexpected exception: ", ex);
}
}
private final TestMethods testMethod;
/**
* Test case constructor. Generates test cases with random method types for
* given methods form {@code j.l.i.MethodHandles} class.
*
* @param testMethod A method from {@code j.l.i.MethodHandles} class which
* returns a {@code j.l.i.MethodHandle}.
*/
protected LambdaFormTestCase(TestMethods testMethod) {
this.testMethod = testMethod;
}
public TestMethods getTestMethod() {
return testMethod;
}
/**
* Routine that executes a test case.
*/
public abstract void doTest();
/**
* Runs a number of test cases defined by the size of testCases list.
*
* @param ctor constructor of LambdaFormCachingTest or its child classes
* object.
* @param testMethods list of test methods
*/
public static void runTests(Function<TestMethods, LambdaFormTestCase> ctor, Collection<TestMethods> testMethods) {
boolean passed = true;
int testCounter = 0;
int failCounter = 0;
long iterations = Math.max(1, Helper.TEST_LIMIT / testMethods.size());
for (long i = 0; i < iterations; i++) {
System.err.println(String.format("Iteration %d:", i));
for (TestMethods testMethod : testMethods) {
LambdaFormTestCase testCase = ctor.apply(testMethod);
try {
System.err.printf("Tested LF caching feature with MethodHandles.%s method.%n",
testCase.getTestMethod().name);
testCase.doTest();
System.err.println("PASSED");
} catch (Throwable t) {
t.printStackTrace();
System.err.println("FAILED");
passed = false;
failCounter++;
}
testCounter++;
}
}
if (!passed) {
throw new Error(String.format("%d of %d test cases FAILED! %n"
+ "Rerun the test with the same \"-Dseed=\" option as in the log file!",
failCounter, testCounter));
} else {
System.err.println(String.format("All %d test cases PASSED!", testCounter));
}
}
}
test/java/lang/invoke/LFCaching/TestMethods.java 0 → 100644
浏览文件 @ b9fd5a85
/*
* 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 com.oracle.testlibrary.jsr292.Helper;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Enumeration containing information about methods from
* {@code j.l.i.MethodHandles} class that are used for testing lambda forms
* caching.
*
* @author kshefov
*/
public enum TestMethods {
FOLD_ARGUMENTS("foldArguments") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
data.put("modifierMHArgNum", modifierMHArgNum);
Class<?> combinerReturnType;
if (realArity == 0) {
combinerReturnType = void.class;
} else {
combinerReturnType = Helper.RNG.nextBoolean() ? void.class : mtTarget.parameterType(0);
}
data.put("combinerReturnType", combinerReturnType);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
Class<?> combinerReturnType = (Class) data.get("combinerReturnType");
int modifierMHArgNum = (int) data.get("modifierMHArgNum");
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), kind);
Class<?> rType = mtTarget.returnType();
int combListStart = (combinerReturnType == void.class) ? 0 : 1;
if (modifierMHArgNum < combListStart) {
modifierMHArgNum = combListStart;
}
MethodHandle combiner = TestMethods.methodHandleGenerator(combinerReturnType,
mtTarget.parameterList().subList(combListStart,
modifierMHArgNum), kind);
return MethodHandles.foldArguments(target, combiner);
}
},
DROP_ARGUMENTS("dropArguments") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int dropArgsPos = Helper.RNG.nextInt(realArity + 1);
data.put("dropArgsPos", dropArgsPos);
MethodType mtDropArgs = TestMethods.randomMethodTypeGenerator(
Helper.RNG.nextInt(Helper.MAX_ARITY - realArity));
data.put("mtDropArgs", mtDropArgs);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
MethodType mtDropArgs = (MethodType) data.get("mtDropArgs");
int dropArgsPos = (int) data.get("dropArgsPos");
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), kind);
int mtTgtSlotsCount = TestMethods.argSlotsCount(mtTarget);
int mtDASlotsCount = TestMethods.argSlotsCount(mtDropArgs);
List<Class<?>> fakeParList;
if (mtTgtSlotsCount + mtDASlotsCount > Helper.MAX_ARITY - 1) {
fakeParList = TestMethods.reduceArgListToSlotsCount(mtDropArgs.parameterList(),
Helper.MAX_ARITY - mtTgtSlotsCount - 1);
} else {
fakeParList = mtDropArgs.parameterList();
}
return MethodHandles.dropArguments(target, dropArgsPos, fakeParList);
}
},
EXPLICIT_CAST_ARGUMENTS("explicitCastArguments") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY / 2);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
MethodType mtExcplCastArgs = TestMethods.randomMethodTypeGenerator(realArity);
if (mtTarget.returnType() == void.class) {
mtExcplCastArgs = MethodType.methodType(void.class,
mtExcplCastArgs.parameterArray());
}
if (mtExcplCastArgs.returnType() == void.class) {
mtExcplCastArgs = MethodType.methodType(mtTarget.returnType(),
mtExcplCastArgs.parameterArray());
}
data.put("mtExcplCastArgs", mtExcplCastArgs);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
MethodType mtExcplCastArgs = (MethodType) data.get("mtExcplCastArgs");
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), kind);
return MethodHandles.explicitCastArguments(target, mtExcplCastArgs);
}
},
FILTER_ARGUMENTS("filterArguments") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY / 2);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int filterArgsPos = Helper.RNG.nextInt(realArity + 1);
data.put("filterArgsPos", filterArgsPos);
int filtersArgsArrayLength = Helper.RNG.nextInt(realArity + 1 - filterArgsPos);
data.put("filtersArgsArrayLength", filtersArgsArrayLength);
MethodType mtFilter = TestMethods.randomMethodTypeGenerator(filtersArgsArrayLength);
data.put("mtFilter", mtFilter);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
MethodType mtFilter = (MethodType) data.get("mtFilter");
int filterArgsPos = (int) data.get("filterArgsPos");
int filtersArgsArrayLength = (int) data.get("filtersArgsArrayLength");
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), kind);
MethodHandle[] filters = new MethodHandle[filtersArgsArrayLength];
for (int i = 0; i < filtersArgsArrayLength; i++) {
filters[i] = TestMethods.filterGenerator(mtFilter.parameterType(i),
mtTarget.parameterType(filterArgsPos + i), kind);
}
return MethodHandles.filterArguments(target, filterArgsPos, filters);
}
},
FILTER_RETURN_VALUE("filterReturnValue") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int filterArgsPos = Helper.RNG.nextInt(realArity + 1);
int filtersArgsArrayLength = Helper.RNG.nextInt(realArity + 1 - filterArgsPos);
MethodType mtFilter = TestMethods.randomMethodTypeGenerator(filtersArgsArrayLength);
data.put("mtFilter", mtFilter);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
MethodType mtFilter = (MethodType) data.get("mtFilter");
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), kind);
MethodHandle filter = TestMethods.filterGenerator(mtTarget.returnType(),
mtFilter.returnType(), kind);
return MethodHandles.filterReturnValue(target, filter);
}
},
INSERT_ARGUMENTS("insertArguments") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int insertArgsPos = Helper.RNG.nextInt(realArity + 1);
data.put("insertArgsPos", insertArgsPos);
int insertArgsArrayLength = Helper.RNG.nextInt(realArity + 1 - insertArgsPos);
MethodType mtInsertArgs = MethodType.methodType(void.class, mtTarget.parameterList()
.subList(insertArgsPos, insertArgsPos + insertArgsArrayLength));
data.put("mtInsertArgs", mtInsertArgs);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
MethodType mtInsertArgs = (MethodType) data.get("mtInsertArgs");
int insertArgsPos = (int) data.get("insertArgsPos");
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), kind);
Object[] insertList = Helper.randomArgs(mtInsertArgs.parameterList());
return MethodHandles.insertArguments(target, insertArgsPos, insertList);
}
},
PERMUTE_ARGUMENTS("permuteArguments") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY / 2);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int[] permuteArgsReorderArray = new int[realArity];
int mtParmuteArgsNum = Helper.RNG.nextInt(Helper.MAX_ARITY);
mtParmuteArgsNum = mtParmuteArgsNum == 0 ? 1 : mtParmuteArgsNum;
MethodType mtPermuteArgs = TestMethods.randomMethodTypeGenerator(mtParmuteArgsNum);
mtTarget = mtTarget.changeReturnType(mtPermuteArgs.returnType());
for (int i = 0; i < realArity; i++) {
int mtPermuteArgsParNum = Helper.RNG.nextInt(mtPermuteArgs.parameterCount());
permuteArgsReorderArray[i] = mtPermuteArgsParNum;
mtTarget = mtTarget.changeParameterType(
i, mtPermuteArgs.parameterType(mtPermuteArgsParNum));
}
data.put("mtTarget", mtTarget);
data.put("permuteArgsReorderArray", permuteArgsReorderArray);
data.put("mtPermuteArgs", mtPermuteArgs);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
MethodType mtPermuteArgs = (MethodType) data.get("mtPermuteArgs");
int[] permuteArgsReorderArray = (int[]) data.get("permuteArgsReorderArray");
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), kind);
return MethodHandles.permuteArguments(target, mtPermuteArgs, permuteArgsReorderArray);
}
},
THROW_EXCEPTION("throwException") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
Class<?> rType = mtTarget.returnType();
return MethodHandles.throwException(rType, Exception.class
);
}
},
GUARD_WITH_TEST("guardWithTest") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
data.put("modifierMHArgNum", modifierMHArgNum);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
int modifierMHArgNum = (int) data.get("modifierMHArgNum");
TestMethods.Kind targetKind;
TestMethods.Kind fallbackKind;
if (kind.equals(TestMethods.Kind.ONE)) {
targetKind = TestMethods.Kind.ONE;
fallbackKind = TestMethods.Kind.TWO;
} else {
targetKind = TestMethods.Kind.TWO;
fallbackKind = TestMethods.Kind.ONE;
}
MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), targetKind);
MethodHandle fallback = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), fallbackKind);
MethodHandle test = TestMethods.methodHandleGenerator(boolean.class,
mtTarget.parameterList().subList(0, modifierMHArgNum), kind);
return MethodHandles.guardWithTest(test, target, fallback);
}
},
CATCH_EXCEPTION("catchException") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
data.put("modifierMHArgNum", modifierMHArgNum);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodType mtTarget = (MethodType) data.get("mtTarget");
int modifierMHArgNum = (int) data.get("modifierMHArgNum");
MethodHandle target;
if (kind.equals(TestMethods.Kind.ONE)) {
target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), TestMethods.Kind.ONE);
} else {
target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
mtTarget.parameterList(), TestMethods.Kind.EXCEPT);
}
List<Class<?>> handlerParamList = new ArrayList<>(mtTarget.parameterCount() + 1);
handlerParamList.add(Exception.class);
handlerParamList.addAll(mtTarget.parameterList().subList(0, modifierMHArgNum));
MethodHandle handler = TestMethods.methodHandleGenerator(
mtTarget.returnType(), handlerParamList, TestMethods.Kind.TWO);
return MethodHandles.catchException(target, Exception.class, handler);
}
},
INVOKER("invoker") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
return MethodHandles.invoker(mtTarget);
}
},
EXACT_INVOKER("exactInvoker") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
return MethodHandles.exactInvoker(mtTarget);
}
},
SPREAD_INVOKER("spreadInvoker") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
// Arity after reducing because of long and double take 2 slots.
int realArity = mtTarget.parameterCount();
int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
data.put("modifierMHArgNum", modifierMHArgNum);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
int modifierMHArgNum = (int) data.get("modifierMHArgNum");
return MethodHandles.spreadInvoker(mtTarget, modifierMHArgNum);
}
},
ARRAY_ELEMENT_GETTER("arrayElementGetter") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
Class<?> rType = mtTarget.returnType();
if (rType == void.class) {
rType = Object.class;
}
return MethodHandles.arrayElementGetter(Array.newInstance(rType, 2).getClass());
}
},
ARRAY_ELEMENT_SETTER("arrayElementSetter") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
Class<?> rType = mtTarget.returnType();
if (rType == void.class) {
rType = Object.class;
}
return MethodHandles.arrayElementSetter(Array.newInstance(rType, 2).getClass());
}
},
CONSTANT("constant") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
Class<?> rType = mtTarget.returnType();
if (rType == void.class) {
rType = Object.class;
}
if (rType.equals(boolean.class)) {
// There should be the same return values because for default values there are special "zero" forms
return MethodHandles.constant(rType, true);
} else {
return MethodHandles.constant(rType, kind.getValue(rType));
}
}
},
IDENTITY("identity") {
@Override
public Map<String, Object> getTestCaseData() {
Map<String, Object> data = new HashMap<>();
int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
data.put("mtTarget", mtTarget);
return data;
}
@Override
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
MethodType mtTarget = (MethodType) data.get("mtTarget");
Class<?> rType = mtTarget.returnType();
if (rType == void.class) {
rType = Object.class;
}
return MethodHandles.identity(rType);
}
};
/**
* Test method's name.
*/
public final String name;
private TestMethods(String name) {
this.name = name;
}
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
throw new UnsupportedOperationException("TESTBUG: getMH method is not implemented for test method " + this);
}
/**
* Creates an adapter method handle depending on a test method from
* MethodHandles class. Adapter is what is returned by the test method. This
* method is able to create two kinds of adapters, their type will be the
* same, but return values are different.
*
* @param data a Map containing data to create a method handle, can be
* obtained by {@link #getTestCaseData} method
* @param kind defines whether adapter ONE or adapter TWO will be
* initialized. Should be equal to TestMethods.Kind.ONE or
* TestMethods.Kind.TWO
* @return Method handle adapter that behaves according to
* TestMethods.Kind.ONE or TestMethods.Kind.TWO
* @throws java.lang.NoSuchMethodException
* @throws java.lang.IllegalAccessException
*/
public MethodHandle getTestCaseMH(Map<String, Object> data, TestMethods.Kind kind)
throws NoSuchMethodException, IllegalAccessException {
if (data == null) {
throw new Error(String.format("TESTBUG: Data for test method %s is not prepared",
this.name));
}
if (!kind.equals(TestMethods.Kind.ONE) && !kind.equals(TestMethods.Kind.TWO)) {
throw new IllegalArgumentException("TESTBUG: Wrong \"kind\" (" + kind
+ ") arg to getTestCaseMH function."
+ " Should be Kind.ONE or Kind.TWO");
}
return getMH(data, kind);
}
/**
* Returns a data Map needed for {@link #getTestCaseMH} method.
*
* @return data Map needed for {@link #getTestCaseMH} method
*/
public Map<String, Object> getTestCaseData() {
throw new UnsupportedOperationException(
"TESTBUG: getTestCaseData method is not implemented for test method " + this);
}
/**
* Enumeration used in methodHandleGenerator to define whether a MH returned
* by this method returns "2" in different type representations, "4", or
* throw an Exception.
*/
public static enum Kind {
ONE(2),
TWO(4),
EXCEPT(0);
private final int value;
private Object getValue(Class<?> cl) {
return Helper.castToWrapper(value, cl);
}
private MethodHandle getBasicMH(Class<?> rType) throws NoSuchMethodException, IllegalAccessException {
MethodHandle result = null;
switch (this) {
case ONE:
case TWO:
if (rType.equals(void.class)) {
result = MethodHandles.lookup().findVirtual(Kind.class, "returnVoid", MethodType.methodType(void.class));
result = MethodHandles.insertArguments(result, 0, this);
} else {
result = MethodHandles.constant(rType, getValue(rType));
}
break;
case EXCEPT:
result = MethodHandles.throwException(rType, Exception.class);
result = MethodHandles.insertArguments(result, 0, new Exception());
break;
}
return result;
}
private void returnVoid() {
}
private Kind(int value) {
this.value = value;
}
}
/**
* Routine used to obtain a randomly generated method type.
*
* @param arity Arity of returned method type.
* @return MethodType generated randomly.
*/
private static MethodType randomMethodTypeGenerator(int arity) {
final Class<?>[] CLASSES = {
Object.class,
int.class,
boolean.class,
byte.class,
short.class,
char.class,
long.class,
float.class,
double.class
};
if (arity > Helper.MAX_ARITY) {
throw new IllegalArgumentException(
String.format("Arity should not exceed %d!", Helper.MAX_ARITY));
}
List<Class<?>> list = Helper.randomClasses(CLASSES, arity);
list = Helper.getParams(list, false, arity);
int i = Helper.RNG.nextInt(CLASSES.length + 1);
Class<?> rtype = i == CLASSES.length ? void.class : CLASSES[i];
return MethodType.methodType(rtype, list);
}
/**
* Routine used to obtain a method handles of a given type an kind (return
* value).
*
* @param returnType Type of MH return value.
* @param argTypes Types of MH args.
* @param kind Defines whether the obtained MH returns "1" or "2".
* @return Method handle of the given type.
* @throws NoSuchMethodException
* @throws IllegalAccessException
*/
private static MethodHandle methodHandleGenerator(Class<?> returnType,
List<Class<?>> argTypes, TestMethods.Kind kind)
throws NoSuchMethodException, IllegalAccessException {
MethodHandle result;
result = kind.getBasicMH(returnType);
return Helper.addTrailingArgs(result, argTypes.size(), argTypes);
}
/**
* Routine that generates filter method handles to test
* MethodHandles.filterArguments method.
*
* @param inputType Filter's argument type.
* @param returnType Filter's return type.
* @param kind Filter's return value definer.
* @return A filter method handle, that takes one argument.
* @throws NoSuchMethodException
* @throws IllegalAccessException
*/
private static MethodHandle filterGenerator(Class<?> inputType, Class<?> returnType,
TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
MethodHandle tmpMH = kind.getBasicMH(returnType);
if (inputType.equals(void.class)) {
return tmpMH;
}
ArrayList<Class<?>> inputTypeList = new ArrayList<>(1);
inputTypeList.add(inputType);
return Helper.addTrailingArgs(tmpMH, 1, inputTypeList);
}
private static int argSlotsCount(MethodType mt) {
int result = 0;
for (Class cl : mt.parameterArray()) {
if (cl.equals(long.class) || cl.equals(double.class)) {
result += 2;
} else {
result++;
}
}
return result;
}
private static List<Class<?>> reduceArgListToSlotsCount(List<Class<?>> list,
int desiredSlotCount) {
List<Class<?>> result = new ArrayList<>(desiredSlotCount);
int count = 0;
for (Class<?> cl : list) {
if (count >= desiredSlotCount) {
break;
}
if (cl.equals(long.class) || cl.equals(double.class)) {
count += 2;
} else {
count++;
}
result.add(cl);
}
return result;
}
}
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