1 /*
2 * Copyright (c) 2014, 2017, 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 /java/lang/invoke/common /test/lib
31 * @modules java.base/java.lang.invoke:open
32 * java.base/java.lang.ref:open
33 * java.management
34 * @build TestMethods
35 * @build LambdaFormTestCase
36 * @build LFCachingTestCase
37 * @build LFMultiThreadCachingTest
38 * @run main/othervm LFMultiThreadCachingTest
39 */
40
41 import test.java.lang.invoke.lib.CodeCacheOverflowProcessor;
42
43 import java.lang.invoke.MethodHandle;
44 import java.util.Collections;
45 import java.util.EnumSet;
46 import java.util.HashMap;
47 import java.util.Map;
48 import java.util.concurrent.ConcurrentLinkedQueue;
49 import java.util.concurrent.CountDownLatch;
50 import java.util.concurrent.CyclicBarrier;
51
52 /**
53 * Multiple threaded lambda forms caching test class.
54 */
55 public final class LFMultiThreadCachingTest extends LFCachingTestCase {
56
57 private static final TestMethods.Kind[] KINDS;
58
59 static {
60 EnumSet<TestMethods.Kind> set
61 = EnumSet.complementOf(EnumSet.of(TestMethods.Kind.EXCEPT));
62 KINDS = set.toArray(new TestMethods.Kind[set.size()]);
63 if (KINDS.length < 2) {
64 throw new Error("TESTBUG: KINDS.length[" + KINDS.length
65 + "] should be at least 2");
66 }
67 }
68 private static final int CORES
69 = Math.max(KINDS.length, Runtime.getRuntime().availableProcessors());
70
71 /**
72 * Constructor a for multiple threaded lambda forms caching test case.
73 *
74 * @param testMethod A method from {@code j.l.i.MethodHandles} class that
75 * returns a {@code j.l.i.MethodHandle} instance.
76 */
77 public LFMultiThreadCachingTest(TestMethods testMethod) {
78 super(testMethod);
79 }
80
81 @Override
82 public void doTest() {
83 Map<String, Object> data = getTestMethod().getTestCaseData();
84 ConcurrentLinkedQueue<MethodHandle> adapters = new ConcurrentLinkedQueue<>();
85 CyclicBarrier begin = new CyclicBarrier(CORES);
86 CountDownLatch end = new CountDownLatch(CORES);
87 final Map<Thread, Throwable> threadUncaughtExceptions
88 = Collections.synchronizedMap(new HashMap<Thread, Throwable>(CORES));
89 for (int i = 0; i < CORES; ++i) {
90 TestMethods.Kind kind = KINDS[i % KINDS.length];
91 Thread t = new Thread(() -> {
92 try {
93 begin.await();
94 adapters.add(getTestMethod().getTestCaseMH(data, kind));
95 } catch (Throwable ex) {
96 threadUncaughtExceptions.put(Thread.currentThread(), ex);
97 } finally {
98 end.countDown();
99 }
100 });
101 t.start();
102 }
103 try {
104 end.await();
105 boolean vmeThrown = false;
106 boolean nonVmeThrown = false;
107 Throwable vme = null;
108 for (Map.Entry<Thread,
109 Throwable> entry : threadUncaughtExceptions.entrySet()) {
110 Thread t = entry.getKey();
111 Throwable e = entry.getValue();
112 System.err.printf("%nA thread with name \"%s\" of %d threads"
113 + " has thrown exception:%n", t.getName(), CORES);
114 e.printStackTrace();
115 if (CodeCacheOverflowProcessor.isThrowableCausedByVME(e)) {
116 vmeThrown = true;
117 vme = e;
118 } else {
119 nonVmeThrown = true;
120 }
121 if (nonVmeThrown) {
122 throw new Error("One ore more threads have"
123 + " thrown unexpected exceptions. See log.");
124 }
125 if (vmeThrown) {
126 throw new Error("One ore more threads have"
127 + " thrown VirtualMachineError caused by"
128 + " code cache overflow. See log.", vme);
129 }
130 }
131 } catch (InterruptedException ex) {
132 throw new Error("Unexpected exception: ", ex);
133 }
134 if (adapters.size() < CORES) {
135 throw new Error("adapters size[" + adapters.size() + "] is less than " + CORES);
136 }
137 MethodHandle prev = adapters.poll();
138 for (MethodHandle current : adapters) {
139 checkLFCaching(prev, current);
140 prev = current;
141 }
142 }
143
144 /**
145 * Main routine for multiple threaded lambda forms caching test.
146 *
147 * @param args Accepts no arguments.
148 */
149 public static void main(String[] args) {
150 LambdaFormTestCase.runTests(LFMultiThreadCachingTest::new,
151 EnumSet.allOf(TestMethods.class));
152 }
153 }