| /* |
| * Copyright (c) 2014, 2017, 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 jdk.test.lib.TimeLimitedRunner; |
| import jdk.testlibrary.Utils; |
| import test.java.lang.invoke.lib.CodeCacheOverflowProcessor; |
| import test.java.lang.invoke.lib.Helper; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.management.GarbageCollectorMXBean; |
| import java.lang.management.ManagementFactory; |
| import java.lang.ref.Reference; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.util.Collection; |
| import java.util.List; |
| 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 static final long TIMEOUT = Helper.IS_THOROUGH ? |
| 0L : (long) (Utils.adjustTimeout(Utils.DEFAULT_TEST_TIMEOUT) * 0.9); |
| |
| /** |
| * Reflection link to {@code j.l.i.MethodHandle.internalForm} method. It is |
| * used to get a lambda form from a method handle. |
| */ |
| protected static final Method INTERNAL_FORM; |
| protected static final Field KIND_FIELD; |
| protected static final Field REF_FIELD; |
| private static final List<GarbageCollectorMXBean> gcInfo; |
| |
| private static long gcCount() { |
| return gcInfo.stream().mapToLong(GarbageCollectorMXBean::getCollectionCount).sum(); |
| } |
| |
| static { |
| try { |
| INTERNAL_FORM = MethodHandle.class.getDeclaredMethod("internalForm"); |
| INTERNAL_FORM.setAccessible(true); |
| |
| KIND_FIELD = Class.forName("java.lang.invoke.LambdaForm").getDeclaredField("kind"); |
| KIND_FIELD.setAccessible(true); |
| |
| REF_FIELD = Reference.class.getDeclaredField("referent"); |
| REF_FIELD.setAccessible(true); |
| } catch (Exception ex) { |
| throw new Error("Unexpected exception", ex); |
| } |
| |
| gcInfo = ManagementFactory.getGarbageCollectorMXBeans(); |
| if (gcInfo.size() == 0) { |
| throw new Error("No GarbageCollectorMXBeans found."); |
| } |
| } |
| |
| private final TestMethods testMethod; |
| private long gcCountAtStart; |
| |
| private static class TestRun { |
| |
| final Function<TestMethods, LambdaFormTestCase> ctor; |
| final Collection<TestMethods> testMethods; |
| final long totalIterations; |
| long doneIterations; |
| long testCounter; |
| long failCounter; |
| boolean passed; |
| |
| TestRun(Function<TestMethods, LambdaFormTestCase> ctor, |
| Collection<TestMethods> testMethods) { |
| this.ctor = ctor; |
| this.testMethods = testMethods; |
| long testCaseNum = testMethods.size(); |
| long iterations = Math.max(1, Helper.TEST_LIMIT / testCaseNum); |
| System.out.printf("Number of iterations according to -DtestLimit is %d (%d cases)%n", |
| iterations, iterations * testCaseNum); |
| System.out.printf("Number of iterations is set to %d (%d cases)%n", |
| iterations, iterations * testCaseNum); |
| System.out.flush(); |
| totalIterations = iterations; |
| doneIterations = 0L; |
| testCounter = 0L; |
| failCounter = 0L; |
| passed = true; |
| } |
| |
| Boolean doIteration() { |
| if (doneIterations >= totalIterations) { |
| return false; |
| } |
| System.err.println(String.format("Iteration %d:", doneIterations)); |
| 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); |
| Throwable t = CodeCacheOverflowProcessor |
| .runMHTest(testCase::doTest); |
| if (t != null) { |
| return false; |
| } |
| System.err.println("PASSED"); |
| } catch (OutOfMemoryError oome) { |
| // Don't swallow OOME so a heap dump can be created. |
| System.err.println("FAILED"); |
| throw oome; |
| } catch (Throwable t) { |
| t.printStackTrace(); |
| System.err.printf("FAILED. Caused by %s%n", t.getMessage()); |
| passed = false; |
| failCounter++; |
| } |
| testCounter++; |
| } |
| doneIterations++; |
| return true; |
| } |
| } |
| |
| /** |
| * 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; |
| this.gcCountAtStart = gcCount(); |
| } |
| |
| public TestMethods getTestMethod() { |
| return testMethod; |
| } |
| |
| protected boolean noGCHappened() { |
| return gcCount() == gcCountAtStart; |
| } |
| |
| /** |
| * 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) { |
| LambdaFormTestCase.TestRun run |
| = new LambdaFormTestCase.TestRun(ctor, testMethods); |
| TimeLimitedRunner runner |
| = new TimeLimitedRunner(TIMEOUT, 4.0d, run::doIteration); |
| try { |
| runner.call(); |
| } catch (Exception ex) { |
| System.err.println("FAILED"); |
| throw new Error("Unexpected error!", ex); |
| } |
| if (!run.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!", |
| run.failCounter, run.testCounter)); |
| } else { |
| System.err.printf("All %d test cases PASSED!%n", run.testCounter); |
| } |
| } |
| } |