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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.
*/
/**
* @test
* @summary Test parking when pinned and emitting the JFR VirtualThreadPinnedEvent throws
* @modules java.base/jdk.internal.event
* @library /test/lib
* @compile/module=java.base jdk/internal/event/VirtualThreadPinnedEvent.java
* @run junit/othervm --enable-native-access=ALL-UNNAMED VirtualThreadPinnedEventThrows
*/
import java.lang.ref.Reference;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.locks.LockSupport;
import jdk.internal.event.VirtualThreadPinnedEvent;
import jdk.test.lib.thread.VThreadPinner;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
class VirtualThreadPinnedEventThrows {
/**
* Test parking when pinned and creating the VirtualThreadPinnedEvent fails with OOME.
*/
@Test
void testVirtualThreadPinnedEventCreateThrows() throws Exception {
VirtualThreadPinnedEvent.setCreateThrows(true);
try {
testParkWhenPinned();
} finally {
VirtualThreadPinnedEvent.setCreateThrows(false);
}
}
/**
* Test parking when pinned and VirtualThreadPinnedEvent.begin fails with OOME.
*/
@Test
void testVirtualThreadPinnedEventBeginThrows() throws Exception {
VirtualThreadPinnedEvent.setBeginThrows(true);
try {
testParkWhenPinned();
} finally {
VirtualThreadPinnedEvent.setBeginThrows(false);
}
}
/**
* Test parking when pinned and VirtualThreadPinnedEvent.commit fails with OOME.
*/
@Test
void testVirtualThreadPinnedEventCommitThrows() throws Exception {
VirtualThreadPinnedEvent.setCommitThrows(true);
try {
testParkWhenPinned();
} finally {
VirtualThreadPinnedEvent.setCommitThrows(false);
}
}
/**
* Test parking a virtual thread when pinned.
*/
private void testParkWhenPinned() throws Exception {
var exception = new AtomicReference<Throwable>();
var done = new AtomicBoolean();
Thread thread = Thread.startVirtualThread(() -> {
try {
VThreadPinner.runPinned(() -> {
while (!done.get()) {
LockSupport.park();
}
});
} catch (Throwable e) {
exception.set(e);
}
});
try {
// wait for thread to park
Thread.State state;
while ((state = thread.getState()) != Thread.State.WAITING) {
assertTrue(state != Thread.State.TERMINATED);
Thread.sleep(10);
}
} finally {
done.set(true);
LockSupport.unpark(thread);
thread.join();
}
assertNull(exception.get());
}
}
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