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 * @modules java.management
32 * @build TestMethods
33 * @build LambdaFormTestCase
34 * @build LFCachingTestCase
35 * @build LFMultiThreadCachingTest
36 * @run main/othervm LFMultiThreadCachingTest
37 */
38
39 import java.lang.invoke.MethodHandle;
40 import java.util.Collections;
41 import java.util.EnumSet;
42 import java.util.HashMap;
43 import java.util.Map;
44 import java.util.concurrent.BrokenBarrierException;
45 import java.util.concurrent.ConcurrentLinkedQueue;
46 import java.util.concurrent.CountDownLatch;
47 import java.util.concurrent.CyclicBarrier;
48 import com.oracle.testlibrary.jsr292.CodeCacheOverflowProcessor;
49
50 /**
51 * Multiple threaded lambda forms caching test class.
52 */
53 public final class LFMultiThreadCachingTest extends LFCachingTestCase {
54
55 private static final TestMethods.Kind[] KINDS;
56
57 static {
58 EnumSet<TestMethods.Kind> set = EnumSet.complementOf(EnumSet.of(TestMethods.Kind.EXCEPT));
59 KINDS = set.toArray(new TestMethods.Kind[set.size()]);
60 if (KINDS.length < 2) {
61 throw new Error("TESTBUG: KINDS.length[" + KINDS.length + "] should be at least 2");
62 }
63 }
64 private static final int CORES = Math.max(KINDS.length, Runtime.getRuntime().availableProcessors());
65
66 /**
67 * Constructor a for multiple threaded lambda forms caching test case.
68 *
69 * @param testMethod A method from {@code j.l.i.MethodHandles} class that
70 * returns a {@code j.l.i.MethodHandle} instance.
71 */
72 public LFMultiThreadCachingTest(TestMethods testMethod) {
73 super(testMethod);
74 }
75
76 @Override
77 public void doTest() {
78 Map<String, Object> data = getTestMethod().getTestCaseData();
79 ConcurrentLinkedQueue<MethodHandle> adapters = new ConcurrentLinkedQueue<>();
80 CyclicBarrier begin = new CyclicBarrier(CORES);
81 CountDownLatch end = new CountDownLatch(CORES);
82 final Map<Thread, Throwable> threadUncaughtExceptions
83 = Collections.synchronizedMap(new HashMap<Thread, Throwable>(CORES));
84 for (int i = 0; i < CORES; ++i) {
85 TestMethods.Kind kind = KINDS[i % KINDS.length];
86 Thread t = new Thread(() -> {
87 try {
88 begin.await();
89 adapters.add(getTestMethod().getTestCaseMH(data, kind));
90 } catch (Throwable ex) {
91 threadUncaughtExceptions.put(Thread.currentThread(), ex);
92 } finally {
93 end.countDown();
94 }
95 });
96 t.start();
97 }
98 try {
99 end.await();
100 boolean vmeThrown = false;
101 boolean nonVmeThrown = false;
102 Throwable vme = null;
103 for (Map.Entry<Thread,
104 Throwable> entry : threadUncaughtExceptions.entrySet()) {
105 Thread t = entry.getKey();
106 Throwable e = entry.getValue();
107 System.err.printf("%nA thread with name \"%s\" of %d threads"
108 + " has thrown exception:%n", t.getName(), CORES);
109 e.printStackTrace();
110 if (CodeCacheOverflowProcessor.isThrowableCausedByVME(e)) {
111 vmeThrown = true;
112 vme = e;
113 } else {
114 nonVmeThrown = true;
115 }
116 if (nonVmeThrown) {
117 throw new Error("One ore more threads have"
118 + " thrown unexpected exceptions. See log.");
119 }
120 if (vmeThrown) {
121 throw new Error("One ore more threads have"
122 + " thrown VirtualMachineError caused by"
123 + " code cache overflow. See log.", vme);
124 }
125 }
126 } catch (InterruptedException ex) {
127 throw new Error("Unexpected exception: ", ex);
128 }
129 if (adapters.size() < CORES) {
130 throw new Error("adapters size[" + adapters.size() + "] is less than " + CORES);
131 }
132 MethodHandle prev = adapters.poll();
133 for (MethodHandle current : adapters) {
134 checkLFCaching(prev, current);
135 prev = current;
136 }
137 }
138
139 /**
140 * Main routine for multiple threaded lambda forms caching test.
141 *
142 * @param args Accepts no arguments.
143 */
144 public static void main(String[] args) {
145 LambdaFormTestCase.runTests(LFMultiThreadCachingTest::new, EnumSet.allOf(TestMethods.class));
146 }
147 }