Source/WebCore/dom/messageports/WorkerMessagePortChannelProvider.h

/*
 * Copyright (C) 2019 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include "MessagePortChannelProvider.h"
#include <wtf/CompletionHandler.h>
#include <wtf/HashMap.h>
#include <wtf/Vector.h>

namespace WebCore {

class WorkerGlobalScope;

class WorkerMessagePortChannelProvider final : public MessagePortChannelProvider {
    WTF_MAKE_FAST_ALLOCATED;
public:
    explicit WorkerMessagePortChannelProvider(WorkerGlobalScope&);
    ~WorkerMessagePortChannelProvider();

private:
    void createNewMessagePortChannel(const MessagePortIdentifier& local, const MessagePortIdentifier& remote) final;
    void entangleLocalPortInThisProcessToRemote(const MessagePortIdentifier& local, const MessagePortIdentifier& remote) final;
    void messagePortDisentangled(const MessagePortIdentifier& local) final;
    void messagePortClosed(const MessagePortIdentifier& local) final;
    void postMessageToRemote(const MessageWithMessagePorts&, const MessagePortIdentifier& remoteTarget) final;
    void takeAllMessagesForPort(const MessagePortIdentifier&, CompletionHandler<void(Vector<MessageWithMessagePorts>&&, Function<void()>&&)>&&) final;
    void checkRemotePortForActivity(const MessagePortIdentifier& remoteTarget, CompletionHandler<void(HasActivity)>&& callback) final;

    WorkerGlobalScope& m_scope;

    uint64_t m_lastCallbackIdentifier { 0 };
    HashMap<uint64_t, CompletionHandler<void(Vector<MessageWithMessagePorts>&&, Function<void()>&&)>> m_takeAllMessagesCallbacks;
    HashMap<uint64_t, CompletionHandler<void(HasActivity)>> m_activityCallbacks;
};

} // namespace WebCore