LFMultiThreadCachingTest.java revision 12973:2e63fa2efdb1 
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 * @modules java.management
32 * @build TestMethods
33 * @build LambdaFormTestCase
34 * @build LFCachingTestCase
35 * @build LFMultiThreadCachingTest
36 * @run main/othervm LFMultiThreadCachingTest
37 */
38
39import java.lang.invoke.MethodHandle;
40import java.util.Collections;
41import java.util.EnumSet;
42import java.util.HashMap;
43import java.util.Map;
44import java.util.concurrent.BrokenBarrierException;
45import java.util.concurrent.ConcurrentLinkedQueue;
46import java.util.concurrent.CountDownLatch;
47import java.util.concurrent.CyclicBarrier;
48import com.oracle.testlibrary.jsr292.CodeCacheOverflowProcessor;
49
50/**
51 * Multiple threaded lambda forms caching test class.
52 */
53public final class LFMultiThreadCachingTest extends LFCachingTestCase {
54
55    private static final TestMethods.Kind[] KINDS;
56
57    static {
58        EnumSet<TestMethods.Kind> set = EnumSet.complementOf(EnumSet.of(TestMethods.Kind.EXCEPT));
59        KINDS = set.toArray(new TestMethods.Kind[set.size()]);
60        if (KINDS.length < 2) {
61            throw new Error("TESTBUG: KINDS.length[" + KINDS.length + "] should be at least 2");
62        }
63    }
64    private static final int CORES = Math.max(KINDS.length, Runtime.getRuntime().availableProcessors());
65
66    /**
67     * Constructor a for multiple threaded lambda forms caching test case.
68     *
69     * @param testMethod A method from {@code j.l.i.MethodHandles} class that
70     * returns a {@code j.l.i.MethodHandle} instance.
71     */
72    public LFMultiThreadCachingTest(TestMethods testMethod) {
73        super(testMethod);
74    }
75
76    @Override
77    public void doTest() {
78        Map<String, Object> data = getTestMethod().getTestCaseData();
79        ConcurrentLinkedQueue<MethodHandle> adapters = new ConcurrentLinkedQueue<>();
80        CyclicBarrier begin = new CyclicBarrier(CORES);
81        CountDownLatch end = new CountDownLatch(CORES);
82        final Map<Thread, Throwable> threadUncaughtExceptions
83                = Collections.synchronizedMap(new HashMap<Thread, Throwable>(CORES));
84        for (int i = 0; i < CORES; ++i) {
85            TestMethods.Kind kind = KINDS[i % KINDS.length];
86            Thread t = new Thread(() -> {
87                try {
88                    begin.await();
89                    adapters.add(getTestMethod().getTestCaseMH(data, kind));
90                } catch (Throwable ex) {
91                    threadUncaughtExceptions.put(Thread.currentThread(), ex);
92                } finally {
93                    end.countDown();
94                }
95            });
96            t.start();
97        }
98        try {
99            end.await();
100            boolean vmeThrown = false;
101            boolean nonVmeThrown = false;
102            Throwable vme = null;
103            for (Map.Entry<Thread,
104                    Throwable> entry : threadUncaughtExceptions.entrySet()) {
105                Thread t =  entry.getKey();
106                Throwable e = entry.getValue();
107                System.err.printf("%nA thread with name \"%s\" of %d threads"
108                        + " has thrown exception:%n", t.getName(), CORES);
109                e.printStackTrace();
110                if (CodeCacheOverflowProcessor.isThrowableCausedByVME(e)) {
111                    vmeThrown = true;
112                    vme = e;
113                } else {
114                    nonVmeThrown = true;
115                }
116                if (nonVmeThrown) {
117                    throw new Error("One ore more threads have"
118                            + " thrown unexpected exceptions. See log.");
119                }
120                if (vmeThrown) {
121                    throw new Error("One ore more threads have"
122                            + " thrown VirtualMachineError caused by"
123                            + " code cache overflow. See log.", vme);
124                }
125            }
126        } catch (InterruptedException ex) {
127            throw new Error("Unexpected exception: ", ex);
128        }
129        if (adapters.size() < CORES) {
130            throw new Error("adapters size[" + adapters.size() + "] is less than " + CORES);
131        }
132        MethodHandle prev = adapters.poll();
133        for (MethodHandle current : adapters) {
134            checkLFCaching(prev, current);
135            prev = current;
136        }
137    }
138
139    /**
140     * Main routine for multiple threaded lambda forms caching test.
141     *
142     * @param args Accepts no arguments.
143     */
144    public static void main(String[] args) {
145        LambdaFormTestCase.runTests(LFMultiThreadCachingTest::new, EnumSet.allOf(TestMethods.class));
146    }
147}
148