汎用非同期タスク ラッパー

void RunTask(XTaskQueueHandle taskQueue,
    std::function<void()> workCallback,
    std::function<void()> completionCallback)
{
    struct RunTaskContext
    {
        std::function<void()> workCallback;
        std::function<void()> completionCallback;
    };

    RunTaskContext* context = new RunTaskContext();
    context->workCallback = workCallback;
    context->completionCallback = completionCallback;
    XAsyncBlock* async = new XAsyncBlock{};
    async->queue = taskQueue;
    async->context = context;
    async->callback = [](XAsyncBlock* async)
    {
        RunTaskContext* context = static_cast<RunTaskContext*>(async->context);
        context->completionCallback();
        delete context;
        delete async;
    };

    // Callback passed to XAsyncRun is the work callback
    XAsyncRun(async,
        [](XAsyncBlock* async)->HRESULT
        {
            RunTaskContext* context = static_cast<RunTaskContext*>(async->context);
            context->workCallback();
            return S_OK;
        });
}

RunTask(taskQueue,
    []()
    {
        // Work Callback
    },
    []()
    {
        // Completion Callback
    });