/*
 * Copyright (c) 2014, 2017, 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
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 * questions.
 */
package com.oracle.svm.core.threadlocal;

import org.graalvm.nativeimage.IsolateThread;
import org.graalvm.nativeimage.Platform;
import org.graalvm.nativeimage.Platforms;

Represents a fast thread local variable of type Object. See FastThreadLocalFactory for details and restrictions of VM thread local variables. The get methods return a value with static type information attached stating that the value has the class provided by the factory. The set methods do not perform any type check. In other words, it is the responsibility of the user to not violate the contract and store a value with a wrong type. /**
 * Represents a fast thread local variable of type {@link Object}. See
 * {@link FastThreadLocalFactory} for details and restrictions of VM thread local variables.
 *
 * The {@code get} methods return a value with static type information attached stating that the
 * value has the {@link #valueClass class} provided by the
 * {@link FastThreadLocalFactory#createObject factory}. The {@code set} methods do not perform any
 * type check. In other words, it is the responsibility of the user to not violate the contract and
 * store a value with a wrong type.
 */
@SuppressWarnings({"unused"})
public final class FastThreadLocalObject<T> extends FastThreadLocal {

    private final Class<T> valueClass;

    @Platforms(Platform.HOSTED_ONLY.class)
    FastThreadLocalObject(Class<T> clazz) {
        this.valueClass = clazz;
    }

    @Platforms(Platform.HOSTED_ONLY.class)
    public Class<T> getValueClass() {
        return valueClass;
    }

    public T get() {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public T get(IsolateThread thread) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public void set(T value) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public void set(IsolateThread thread, T value) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public T getVolatile() {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public T getVolatile(IsolateThread thread) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public void setVolatile(T value) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public void setVolatile(IsolateThread thread, T value) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public boolean compareAndSet(T expect, T update) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }

    public boolean compareAndSet(IsolateThread thread, T expect, T update) {
        throw new IllegalArgumentException("Value of VM thread local variable cannot be accessed during native image generation");
    }
}