sharedtask.h

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 **********************************************************************/
 
#pragma once
 
#include <coroutine>
#include <QList>
#include <QtDebug>
#include "task.h"
#include "context.h"
 
namespace LC::Util
{
    template<typename>
    struct SharedTaskExtension
    {
        static constexpr bool IsAwaiterHandler = true;
        static constexpr bool IsResumeValueHandler = true;
 
        QList<std::coroutine_handle<>> Awaiters_;
 
        void AddAwaiter (std::coroutine_handle<> outerTask)
        {
            Awaiters_ << outerTask;
        }
 
        void RemoveAwaiter (std::coroutine_handle<> outerTask) noexcept
        {
            if (!Awaiters_.removeOne (outerTask))
                qFatal () << "awaiter not found";
        }
 
        auto GetAwaiters ()
        {
            return this->Awaiters_;
        }
 
        template<typename R>
        static const R& ResumeValue (R& ret) noexcept
        {
            return ret;
        }
    };
 
    template<typename T = void>
    using SharedTask = Task<T, SharedTaskExtension>;
 
    template<typename T = void>
    using SharedContextTask = Task<T, SharedTaskExtension, ContextExtension>;
}