Esempio n. 1
0
        public void ExecuteFrame(PageCache cache)
        {
            if (0 == _waitQueue.Count)
            {
                return;
            }

            try
            {
                while (_waitQueue.Count != 0)
                {
                    var key = _waitQueue.Dequeue();

                    PagePointer ptr;
                    cache.AddContext(key, out ptr);

                    Page page;
                    if (!cache.TryGetPage(ptr.index, out page))
                    {
                        _capturing.Enqueue(ptr.index);
                    }
                }

                while (_capturing.Count != 0)
                {
                    var pageIndex = _capturing.Dequeue();
                    Task.Factory.StartNew(() =>
                    {
                        var page   = _stream.Capture(pageIndex * Config.LENGTH_PAGE, (pageIndex + 1) * Config.LENGTH_PAGE).Flush();
                        page.index = pageIndex;
                        cache.AddPage(page);
                    });
                }
            }
            catch (KeyNotFoundException e) { }
            catch (Exception e) { }
            finally
            {
                _waitQueue.Clear();
                _capturing.Clear();
            }
        }