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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

package com.sun.star.lib.uno.environments.remote;

final class NativeThreadPool implements IThreadPool {
    public NativeThreadPool() {
        pool = create();
    }

    public ThreadId getThreadId() {
        return new ThreadId(threadId());
    }

    public void attach() {
        attach(pool);
    }

    public Object attach(ThreadId id) {
        attach();
        return null;
    }

    public void detach() {
        detach(pool);
    }

    public void detach(Object handle, ThreadId id) {
        detach();
    }

    public Object enter() throws Throwable {
        Job job = enter(pool);
        if (job == null) {
            throw dispose;
        }
        return job.execute();
    }

    public Object enter(Object handle, ThreadId id) throws Throwable {
        return enter();
    }

    public void putJob(Job job) {
        putJob(
            pool, job.getThreadId().getBytes(), job, job.isRequest(),
            job.isRequest() && !job.isSynchronous());
    }

    public void dispose(Throwable throwable) {
        dispose = throwable;
        dispose(pool);
    }

    public void destroy() {
        destroy(pool);
    }

    // The native implementation is in
    // bridges/source/jni_uno/nativethreadpool.cxx:
    static {
        System.loadLibrary("java_uno");
    }
    private static native byte[] threadId();
    private static native long create();
    private static native void attach(long pool);
    private static native Job enter(long pool);
    private static native void detach(long pool);
    private static native void putJob(
        long pool, byte[] threadId, Job job, boolean request, boolean oneWay);
    private static native void dispose(long pool);
    private static native void destroy(long pool);

    private final long pool;
    private volatile Throwable dispose;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */