1 /* 2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test LFMultiThreadCachingTest 26 * @bug 8046703 27 * @key randomness 28 * @summary Test verifies that lambda forms are cached when run with multiple threads 29 * @author kshefov 30 * @library /lib/testlibrary/jsr292 /lib/testlibrary 31 * @build TestMethods 32 * @build LambdaFormTestCase 33 * @build LFCachingTestCase 34 * @build LFMultiThreadCachingTest 35 * @run main/othervm -Djava.lang.invoke.MethodHandle.OBSERVE_BMH_SPECIES_CREATION=true LFMultiThreadCachingTest 36 */ 37 38 import java.lang.invoke.MethodHandle; 39 import java.util.Collections; 40 import java.util.EnumSet; 41 import java.util.HashMap; 42 import java.util.Map; 43 import java.util.concurrent.BrokenBarrierException; 44 import java.util.concurrent.ConcurrentLinkedQueue; 45 import java.util.concurrent.CountDownLatch; 46 import java.util.concurrent.CyclicBarrier; 47 import com.oracle.testlibrary.jsr292.CodeCacheOverflowProcessor; 48 49 /** 50 * Multiple threaded lambda forms caching test class. 51 */ 52 public final class LFMultiThreadCachingTest extends LFCachingTestCase { 53 54 private static final TestMethods.Kind[] KINDS; 55 56 static { 57 EnumSet<TestMethods.Kind> set = EnumSet.complementOf(EnumSet.of(TestMethods.Kind.EXCEPT)); 58 KINDS = set.toArray(new TestMethods.Kind[set.size()]); 59 if (KINDS.length < 2) { 60 throw new Error("TESTBUG: KINDS.length[" + KINDS.length + "] should be at least 2"); 61 } 62 } 63 private static final int CORES = Math.max(KINDS.length, Runtime.getRuntime().availableProcessors()); 64 65 /** 66 * Constructor a for multiple threaded lambda forms caching test case. 67 * 68 * @param testMethod A method from {@code j.l.i.MethodHandles} class that 69 * returns a {@code j.l.i.MethodHandle} instance. 70 */ 71 public LFMultiThreadCachingTest(TestMethods testMethod) { 72 super(testMethod); 73 } 74 75 @Override 76 public void doTest() { 77 Map<String, Object> data = getTestMethod().getTestCaseData(); 78 ConcurrentLinkedQueue<MethodHandle> adapters = new ConcurrentLinkedQueue<>(); 79 CyclicBarrier begin = new CyclicBarrier(CORES); 80 CountDownLatch end = new CountDownLatch(CORES); 81 final Map<Thread, Throwable> threadUncaughtExceptions 82 = Collections.synchronizedMap(new HashMap<Thread, Throwable>(CORES)); 83 for (int i = 0; i < CORES; ++i) { 84 TestMethods.Kind kind = KINDS[i % KINDS.length]; 85 Thread t = new Thread(() -> { 86 try { 87 begin.await(); 88 adapters.add(getTestMethod().getTestCaseMH(data, kind)); 89 } catch (Throwable ex) { 90 threadUncaughtExceptions.put(Thread.currentThread(), ex); 91 } finally { 92 end.countDown(); 93 } 94 }); 95 t.start(); 96 } 97 try { 98 end.await(); 99 boolean vmeThrown = false; 100 boolean nonVmeThrown = false; 101 Throwable vme = null; 102 for (Map.Entry<Thread, 103 Throwable> entry : threadUncaughtExceptions.entrySet()) { 104 Thread t = entry.getKey(); 105 Throwable e = entry.getValue(); 106 System.err.printf("%nA thread with name \"%s\" of %d threads" 107 + " has thrown exception:%n", t.getName(), CORES); 108 e.printStackTrace(); 109 if (CodeCacheOverflowProcessor.isThrowableCausedByVME(e)) { 110 vmeThrown = true; 111 vme = e; 112 } else { 113 nonVmeThrown = true; 114 } 115 if (nonVmeThrown) { 116 throw new Error("One ore more threads have" 117 + " thrown unexpected exceptions. See log."); 118 } 119 if (vmeThrown) { 120 throw new Error("One ore more threads have" 121 + " thrown VirtualMachineError caused by" 122 + " code cache overflow. See log.", vme); 123 } 124 } 125 } catch (InterruptedException ex) { 126 throw new Error("Unexpected exception: ", ex); 127 } 128 if (adapters.size() < CORES) { 129 throw new Error("adapters size[" + adapters.size() + "] is less than " + CORES); 130 } 131 MethodHandle prev = adapters.poll(); 132 for (MethodHandle current : adapters) { 133 checkLFCaching(prev, current); 134 prev = current; 135 } 136 } 137 138 /** 139 * Main routine for multiple threaded lambda forms caching test. 140 * 141 * @param args Accepts no arguments. 142 */ 143 public static void main(String[] args) { 144 LambdaFormTestCase.runTests(LFMultiThreadCachingTest::new, EnumSet.allOf(TestMethods.class)); 145 } 146 }