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