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/jsr292 /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.BrokenBarrierException;
47 import java.util.concurrent.ConcurrentLinkedQueue;
48 import java.util.concurrent.CountDownLatch;
49 import java.util.concurrent.CyclicBarrier;
50 import com.oracle.testlibrary.jsr292.CodeCacheOverflowProcessor;
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 = EnumSet.complementOf(EnumSet.of(TestMethods.Kind.EXCEPT));
61 KINDS = set.toArray(new TestMethods.Kind[set.size()]);
62 if (KINDS.length < 2) {
63 throw new Error("TESTBUG: KINDS.length[" + KINDS.length + "] should be at least 2");
64 }
65 }
66 private static final int CORES = Math.max(KINDS.length, Runtime.getRuntime().availableProcessors());
67
68 /**
69 * Constructor a for multiple threaded lambda forms caching test case.
70 *
71 * @param testMethod A method from {@code j.l.i.MethodHandles} class that
72 * returns a {@code j.l.i.MethodHandle} instance.
73 */
74 public LFMultiThreadCachingTest(TestMethods testMethod) {
75 super(testMethod);
76 }
77
78 @Override
79 public void doTest() {
80 Map<String, Object> data = getTestMethod().getTestCaseData();
81 ConcurrentLinkedQueue<MethodHandle> adapters = new ConcurrentLinkedQueue<>();
82 CyclicBarrier begin = new CyclicBarrier(CORES);
83 CountDownLatch end = new CountDownLatch(CORES);
84 final Map<Thread, Throwable> threadUncaughtExceptions
85 = Collections.synchronizedMap(new HashMap<Thread, Throwable>(CORES));
86 for (int i = 0; i < CORES; ++i) {
87 TestMethods.Kind kind = KINDS[i % KINDS.length];
88 Thread t = new Thread(() -> {
89 try {
90 begin.await();
91 adapters.add(getTestMethod().getTestCaseMH(data, kind));
92 } catch (Throwable ex) {
93 threadUncaughtExceptions.put(Thread.currentThread(), ex);
94 } finally {
95 end.countDown();
96 }
97 });
98 t.start();
99 }
100 try {
101 end.await();
102 boolean vmeThrown = false;
103 boolean nonVmeThrown = false;
104 Throwable vme = null;
105 for (Map.Entry<Thread,
106 Throwable> entry : threadUncaughtExceptions.entrySet()) {
107 Thread t = entry.getKey();
108 Throwable e = entry.getValue();
109 System.err.printf("%nA thread with name \"%s\" of %d threads"
110 + " has thrown exception:%n", t.getName(), CORES);
111 e.printStackTrace();
112 if (CodeCacheOverflowProcessor.isThrowableCausedByVME(e)) {
113 vmeThrown = true;
114 vme = e;
115 } else {
116 nonVmeThrown = true;
117 }
118 if (nonVmeThrown) {
119 throw new Error("One ore more threads have"
120 + " thrown unexpected exceptions. See log.");
121 }
122 if (vmeThrown) {
123 throw new Error("One ore more threads have"
124 + " thrown VirtualMachineError caused by"
125 + " code cache overflow. See log.", vme);
126 }
127 }
128 } catch (InterruptedException ex) {
129 throw new Error("Unexpected exception: ", ex);
130 }
131 if (adapters.size() < CORES) {
132 throw new Error("adapters size[" + adapters.size() + "] is less than " + CORES);
133 }
134 MethodHandle prev = adapters.poll();
135 for (MethodHandle current : adapters) {
136 checkLFCaching(prev, current);
137 prev = current;
138 }
139 }
140
141 /**
142 * Main routine for multiple threaded lambda forms caching test.
143 *
144 * @param args Accepts no arguments.
145 */
146 public static void main(String[] args) {
147 LambdaFormTestCase.runTests(LFMultiThreadCachingTest::new, EnumSet.allOf(TestMethods.class));
148 }
149 }