77 lines
2.4 KiB
Java
77 lines
2.4 KiB
Java
/*
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* Copyright (c) 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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* @bug 8311177
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* @requires vm.continuations
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* @library /test/lib
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* @run main/othervm/native -agentlib:CarrierThreadEventNotification CarrierThreadEventNotification
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*/
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import java.util.concurrent.*;
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import java.util.ArrayList;
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import java.util.List;
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public class CarrierThreadEventNotification {
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static final int VTHREAD_COUNT = 64;
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static volatile boolean stopRunning = false;
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private static native void setSingleSteppingMode(boolean enable);
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final Runnable FOO = () -> {
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while(!stopRunning) {
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recurse(10);
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}
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};
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private void recurse(int depth) {
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if (depth > 0) {
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recurse(depth -1);
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} else {
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Thread.yield();
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}
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}
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private void runTest() throws Exception {
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List<Thread> virtualThreads = new ArrayList<>();
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for (int i = 0; i < VTHREAD_COUNT; i++) {
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virtualThreads.add(Thread.ofVirtual().start(FOO));
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}
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for (int cnt = 0; cnt < 500; cnt++) {
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setSingleSteppingMode(true);
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Thread.sleep(10);
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setSingleSteppingMode(false);
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}
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stopRunning = true;
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for (Thread t : virtualThreads) {
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t.join();
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}
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}
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public static void main(String[] args) throws Exception {
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CarrierThreadEventNotification obj = new CarrierThreadEventNotification();
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obj.runTest();
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}
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}
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