103 lines
3.6 KiB
Java
103 lines
3.6 KiB
Java
/*
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* Copyright (c) 2023, 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 Verifies JVMTI GetLocalStorage/SetLocalStorage
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* @requires vm.continuations
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* @requires vm.jvmti
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* @run main/othervm/native -agentlib:VThreadTLSTest VThreadTLSTest
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*/
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/**
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* @test
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* @bug 8311556
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* @summary Verifies JVMTI GetLocalStorage/SetLocalStorage
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* @requires vm.continuations
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* @requires vm.jvmti
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* @run main/othervm/native -Djdk.attach.allowAttachSelf=true -XX:+EnableDynamicAgentLoading VThreadTLSTest attach
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*/
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import com.sun.tools.attach.VirtualMachine;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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public class VThreadTLSTest {
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static final String AGENT_LIB = "VThreadTLSTest";
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static volatile boolean attached;
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static volatile boolean failed;
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static void log(String msg) { System.out.println(msg); }
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static native long getTLS();
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static native void setTLS(long value);
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static void test() {
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try {
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while (!attached) {
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// keep mounted
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}
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long threadId = Thread.currentThread().threadId();
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setTLS(threadId);
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long mountedValue = getTLS();
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if (mountedValue != threadId) {
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log("Error: wrong TLS value while mounted: " + threadId + ", " + mountedValue);
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failed = true;
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return;
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}
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for (int count = 0; count < 10; count++) {
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Thread.sleep(1);
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long tlsValue = getTLS();
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if (tlsValue != threadId) {
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log("Error: wrong TLS value after yield: expected: " + threadId + " got: " + tlsValue);
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failed = true;
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return;
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}
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}
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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public static void main(String[] args) throws Exception {
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try (ExecutorService execService = Executors.newVirtualThreadPerTaskExecutor()) {
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for (int threadCount = 0; threadCount < 20; threadCount++) {
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execService.execute(() -> test());
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}
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if (args.length == 1 && args[0].equals("attach")) {
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log("loading " + AGENT_LIB + " lib");
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VirtualMachine vm = VirtualMachine.attach(String.valueOf(ProcessHandle.current().pid()));
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vm.loadAgentLibrary(AGENT_LIB);
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}
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Thread.sleep(10);
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attached = true;
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}
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if (failed) {
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throw new RuntimeException("Test FAILED: errors encountered");
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} else {
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log("Test passed");
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}
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}
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}
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