126 lines
4.2 KiB
Java
126 lines
4.2 KiB
Java
/*
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* Copyright (c) 2023, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @summary Test parking when pinned and emitting the JFR VirtualThreadPinnedEvent throws
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* @modules java.base/java.lang:+open java.base/jdk.internal.event
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* @library /test/lib
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* @compile/module=java.base jdk/internal/event/VirtualThreadPinnedEvent.java
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* @run junit/othervm --enable-native-access=ALL-UNNAMED VirtualThreadPinnedEventThrows
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*/
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import java.lang.ref.Reference;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.concurrent.locks.LockSupport;
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import jdk.internal.event.VirtualThreadPinnedEvent;
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import jdk.test.lib.thread.VThreadRunner;
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import jdk.test.lib.thread.VThreadPinner;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.BeforeAll;
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import static org.junit.jupiter.api.Assertions.*;
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class VirtualThreadPinnedEventThrows {
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@BeforeAll
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static void setup() {
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// need >=2 carriers for testing pinning when main thread is a virtual thread
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if (Thread.currentThread().isVirtual()) {
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VThreadRunner.ensureParallelism(2);
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}
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}
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/**
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* Test parking when pinned and creating the VirtualThreadPinnedEvent fails with OOME.
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*/
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@Test
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void testVirtualThreadPinnedEventCreateThrows() throws Exception {
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VirtualThreadPinnedEvent.setCreateThrows(true);
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try {
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testParkWhenPinned();
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} finally {
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VirtualThreadPinnedEvent.setCreateThrows(false);
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}
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}
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/**
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* Test parking when pinned and VirtualThreadPinnedEvent.begin fails with OOME.
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*/
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@Test
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void testVirtualThreadPinnedEventBeginThrows() throws Exception {
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VirtualThreadPinnedEvent.setBeginThrows(true);
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try {
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testParkWhenPinned();
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} finally {
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VirtualThreadPinnedEvent.setBeginThrows(false);
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}
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}
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/**
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* Test parking when pinned and VirtualThreadPinnedEvent.commit fails with OOME.
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*/
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@Test
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void testVirtualThreadPinnedEventCommitThrows() throws Exception {
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VirtualThreadPinnedEvent.setCommitThrows(true);
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try {
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testParkWhenPinned();
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} finally {
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VirtualThreadPinnedEvent.setCommitThrows(false);
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}
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}
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/**
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* Test parking a virtual thread when pinned.
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*/
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private void testParkWhenPinned() throws Exception {
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var exception = new AtomicReference<Throwable>();
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var done = new AtomicBoolean();
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Thread thread = Thread.startVirtualThread(() -> {
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try {
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VThreadPinner.runPinned(() -> {
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while (!done.get()) {
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LockSupport.park();
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}
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});
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} catch (Throwable e) {
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exception.set(e);
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}
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});
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try {
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// wait for thread to park
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Thread.State state;
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while ((state = thread.getState()) != Thread.State.WAITING) {
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assertTrue(state != Thread.State.TERMINATED);
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Thread.sleep(10);
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}
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} finally {
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done.set(true);
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LockSupport.unpark(thread);
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thread.join();
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}
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assertNull(exception.get());
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}
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}
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