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 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 }