| /* |
| * 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. |
| */ |
| |
| /* |
| * @test LFMultiThreadCachingTest |
| * @bug 8046703 |
| * @key randomness |
| * @summary Test verifies that lambda forms are cached when run with multiple threads |
| * @author kshefov |
| * @library /lib/testlibrary /java/lang/invoke/common /test/lib |
| * @modules java.base/java.lang.invoke:open |
| * java.base/java.lang.ref:open |
| * java.management |
| * @build jdk.test.lib.TimeLimitedRunner |
| * @build TestMethods |
| * @build LambdaFormTestCase |
| * @build LFCachingTestCase |
| * @build LFMultiThreadCachingTest |
| * @run main/othervm LFMultiThreadCachingTest |
| */ |
| |
| import test.java.lang.invoke.lib.CodeCacheOverflowProcessor; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.HashMap; |
| import java.util.Map; |
| 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); |
| final Map<Thread, Throwable> threadUncaughtExceptions |
| = Collections.synchronizedMap(new HashMap<Thread, Throwable>(CORES)); |
| for (int i = 0; i < CORES; ++i) { |
| TestMethods.Kind kind = KINDS[i % KINDS.length]; |
| Thread t = new Thread(() -> { |
| try { |
| begin.await(); |
| adapters.add(getTestMethod().getTestCaseMH(data, kind)); |
| } catch (Throwable ex) { |
| threadUncaughtExceptions.put(Thread.currentThread(), ex); |
| } finally { |
| end.countDown(); |
| } |
| }); |
| t.start(); |
| } |
| try { |
| end.await(); |
| boolean vmeThrown = false; |
| boolean nonVmeThrown = false; |
| Throwable vme = null; |
| for (Map.Entry<Thread, |
| Throwable> entry : threadUncaughtExceptions.entrySet()) { |
| Thread t = entry.getKey(); |
| Throwable e = entry.getValue(); |
| System.err.printf("%nA thread with name \"%s\" of %d threads" |
| + " has thrown exception:%n", t.getName(), CORES); |
| e.printStackTrace(); |
| if (CodeCacheOverflowProcessor.isThrowableCausedByVME(e)) { |
| vmeThrown = true; |
| vme = e; |
| } else { |
| nonVmeThrown = true; |
| } |
| if (nonVmeThrown) { |
| throw new Error("One ore more threads have" |
| + " thrown unexpected exceptions. See log."); |
| } |
| if (vmeThrown) { |
| throw new Error("One ore more threads have" |
| + " thrown VirtualMachineError caused by" |
| + " code cache overflow. See log.", vme); |
| } |
| } |
| } 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)); |
| } |
| } |