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8311867: StructuredTaskScope.shutdown does not interrupt newly starte…
…d threads Reviewed-by: jpai
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Alan Bateman
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Jul 13, 2023
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95 changes: 95 additions & 0 deletions
95
test/jdk/java/util/concurrent/StructuredTaskScope/StressShutdown.java
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/* | ||
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved. | ||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
* | ||
* This code is free software; you can redistribute it and/or modify it | ||
* under the terms of the GNU General Public License version 2 only, as | ||
* published by the Free Software Foundation. | ||
* | ||
* This code is distributed in the hope that it will be useful, but WITHOUT | ||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
* version 2 for more details (a copy is included in the LICENSE file that | ||
* accompanied this code). | ||
* | ||
* You should have received a copy of the GNU General Public License version | ||
* 2 along with this work; if not, write to the Free Software Foundation, | ||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
* | ||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
* or visit www.oracle.com if you need additional information or have any | ||
* questions. | ||
*/ | ||
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/* | ||
* @test | ||
* @bug 8311867 | ||
* @summary Stress test of StructuredTaskScope.shutdown with running and starting threads | ||
* @enablePreview | ||
* @run junit StressShutdown | ||
*/ | ||
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import java.time.Duration; | ||
import java.util.concurrent.Callable; | ||
import java.util.concurrent.StructuredTaskScope; | ||
import java.util.concurrent.ThreadFactory; | ||
import java.util.stream.IntStream; | ||
import java.util.stream.Stream; | ||
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import org.junit.jupiter.params.ParameterizedTest; | ||
import org.junit.jupiter.params.provider.Arguments; | ||
import org.junit.jupiter.params.provider.MethodSource; | ||
import static org.junit.jupiter.api.Assertions.*; | ||
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class StressShutdown { | ||
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static final Callable<Void> SLEEP_FOR_A_DAY = () -> { | ||
Thread.sleep(Duration.ofDays(1)); | ||
return null; | ||
}; | ||
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static Stream<Arguments> testCases() { | ||
Stream<ThreadFactory> factories = Stream.of( | ||
Thread.ofPlatform().factory(), | ||
Thread.ofVirtual().factory() | ||
); | ||
// 0..15 forks before shutdown, 0..15 forks after shutdown | ||
return factories.flatMap(f -> IntStream.range(0, 256) | ||
.mapToObj(x -> Arguments.of(f, x & 0x0F, (x & 0xF0) >> 4))); | ||
} | ||
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/** | ||
* Test StructuredTaskScope.shutdown with running threads and concurrently with | ||
* threads that are starting. The shutdown should interrupt all threads so that | ||
* join wakes up. | ||
* | ||
* @param factory the ThreadFactory to use | ||
* @param beforeShutdown the number of subtasks to fork before shutdown | ||
* @param afterShutdown the number of subtasks to fork after shutdown | ||
*/ | ||
@ParameterizedTest | ||
@MethodSource("testCases") | ||
void testShutdown(ThreadFactory factory, int beforeShutdown, int afterShutdown) | ||
throws InterruptedException | ||
{ | ||
try (var scope = new StructuredTaskScope<>(null, factory)) { | ||
// fork subtasks | ||
for (int i = 0; i < beforeShutdown; i++) { | ||
scope.fork(SLEEP_FOR_A_DAY); | ||
} | ||
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// fork subtask to shutdown | ||
scope.fork(() -> { | ||
scope.shutdown(); | ||
return null; | ||
}); | ||
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// fork after forking subtask to shutdown | ||
for (int i = 0; i < afterShutdown; i++) { | ||
scope.fork(SLEEP_FOR_A_DAY); | ||
} | ||
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scope.join(); | ||
} | ||
} | ||
} |
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