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 jdk.test.lib.TimeLimitedRunner
35 * @build TestMethods
36 * @build LambdaFormTestCase
37 * @build LFCachingTestCase
38 * @build LFMultiThreadCachingTest
39 * @run main/othervm LFMultiThreadCachingTest
40 */
41
42 import test.java.lang.invoke.lib.CodeCacheOverflowProcessor;
43
44 import java.lang.invoke.MethodHandle;
45 import java.util.Collections;
46 import java.util.EnumSet;
47 import java.util.HashMap;
48 import java.util.Map;
49 import java.util.concurrent.ConcurrentLinkedQueue;
50 import java.util.concurrent.CountDownLatch;
51 import java.util.concurrent.CyclicBarrier;
52
53 /**
54 * Multiple threaded lambda forms caching test class.
55 */
56 public final class LFMultiThreadCachingTest extends LFCachingTestCase {
57
58 private static final TestMethods.Kind[] KINDS;
59
60 static {
61 EnumSet<TestMethods.Kind> set
62 = EnumSet.complementOf(EnumSet.of(TestMethods.Kind.EXCEPT));
63 KINDS = set.toArray(new TestMethods.Kind[set.size()]);
64 if (KINDS.length < 2) {
65 throw new Error("TESTBUG: KINDS.length[" + KINDS.length
66 + "] should be at least 2");
67 }
68 }
69 private static final int CORES
70 = Math.max(KINDS.length, Runtime.getRuntime().availableProcessors());
71
72 /**
73 * Constructor a for multiple threaded lambda forms caching test case.
74 *
75 * @param testMethod A method from {@code j.l.i.MethodHandles} class that
76 * returns a {@code j.l.i.MethodHandle} instance.
77 */
78 public LFMultiThreadCachingTest(TestMethods testMethod) {
79 super(testMethod);
80 }
81
82 @Override
83 public void doTest() {
84 Map<String, Object> data = getTestMethod().getTestCaseData();
85 ConcurrentLinkedQueue<MethodHandle> adapters = new ConcurrentLinkedQueue<>();
86 CyclicBarrier begin = new CyclicBarrier(CORES);
87 CountDownLatch end = new CountDownLatch(CORES);
88 final Map<Thread, Throwable> threadUncaughtExceptions
89 = Collections.synchronizedMap(new HashMap<Thread, Throwable>(CORES));
90 for (int i = 0; i < CORES; ++i) {
91 TestMethods.Kind kind = KINDS[i % KINDS.length];
92 Thread t = new Thread(() -> {
93 try {
94 begin.await();
95 adapters.add(getTestMethod().getTestCaseMH(data, kind));
96 } catch (Throwable ex) {
97 threadUncaughtExceptions.put(Thread.currentThread(), ex);
98 } finally {
99 end.countDown();
100 }
101 });
102 t.start();
103 }
104 try {
105 end.await();
106 boolean vmeThrown = false;
107 boolean nonVmeThrown = false;
108 Throwable vme = null;
109 for (Map.Entry<Thread,
110 Throwable> entry : threadUncaughtExceptions.entrySet()) {
111 Thread t = entry.getKey();
112 Throwable e = entry.getValue();
113 System.err.printf("%nA thread with name \"%s\" of %d threads"
114 + " has thrown exception:%n", t.getName(), CORES);
115 e.printStackTrace();
116 if (CodeCacheOverflowProcessor.isThrowableCausedByVME(e)) {
117 vmeThrown = true;
118 vme = e;
119 } else {
120 nonVmeThrown = true;
121 }
122 if (nonVmeThrown) {
123 throw new Error("One ore more threads have"
124 + " thrown unexpected exceptions. See log.");
125 }
126 if (vmeThrown) {
127 throw new Error("One ore more threads have"
128 + " thrown VirtualMachineError caused by"
129 + " code cache overflow. See log.", vme);
130 }
131 }
132 } catch (InterruptedException ex) {
133 throw new Error("Unexpected exception: ", ex);
134 }
135 if (adapters.size() < CORES) {
136 throw new Error("adapters size[" + adapters.size() + "] is less than " + CORES);
137 }
138 MethodHandle prev = adapters.poll();
139 for (MethodHandle current : adapters) {
140 checkLFCaching(prev, current);
141 prev = current;
142 }
143 }
144
145 /**
146 * Main routine for multiple threaded lambda forms caching test.
147 *
148 * @param args Accepts no arguments.
149 */
150 public static void main(String[] args) {
151 LambdaFormTestCase.runTests(LFMultiThreadCachingTest::new,
152 EnumSet.allOf(TestMethods.class));
153 }
154 }