src/java.base/share/classes/jdk/internal/misc/CarrierThreadLocal.java - master - niceSOFT/openjdk21

src/java.base/share/classes/jdk/internal/misc/CarrierThreadLocal.java

57 строк2 KB

Peter Levart

8291897: TerminatingThreadLocal(s) not registered from virtual thread(s)

08 авг 2022, 15:38

08 авг 2022, 15:38861cc67

/*
 * Copyright (c) 2022, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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.
 */

package jdk.internal.misc;

import jdk.internal.access.JavaLangAccess;
import jdk.internal.access.SharedSecrets;

/**
 * A {@link ThreadLocal} variant which binds its value to current thread's
 * carrier thread.
 */
public class CarrierThreadLocal<T> extends ThreadLocal<T> {

    @Override
    public T get() {
        return JLA.getCarrierThreadLocal(this);
    }

    @Override
    public void set(T value) {
        JLA.setCarrierThreadLocal(this, value);
    }

    @Override
    public void remove() {
        JLA.removeCarrierThreadLocal(this);
    }

    public boolean isPresent() {
        return JLA.isCarrierThreadLocalPresent(this);
    }

    private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();
}