protected void RunTask()
{
#region 创造主线程，去分配多个下载线程
_tokenSource = new CancellationTokenSource();
var token = _tokenSource.Token;
Task.Factory.StartNew(() =>
{
while (!token.IsCancellationRequested)
{
#region 创建执行下载的线程数组
var items = UrlProvider.GetItems(Option.MaxCount);
var tasksLength = items.Count;
var tasks = new Task[tasksLength];
for (var i = 0; i < tasksLength; i++)
{
var item = items[i];
UrlProvider.UpdateItem(item, UriStatus.DOING);
tasks[i] = new Task(() =>
{
try
{
// TODO 执行具体规则
RunTaskAsync(item).GetAwaiter().GetResult();
}
catch (Exception ex)
{
var error = $"{item.Source}, {ex.Message},{ex.TargetSite}";
Debug.WriteLine(error);
Logger?.Error(error);
UrlProvider.UpdateItem(item, UriStatus.ERROR);
}
});
}
#endregion
#region 监视线程数组完成
var continuation = Task.Factory.ContinueWhenAll(tasks, (task) =>
{ }, token);
foreach (var task in tasks)
{
task.Start();
}
while (!continuation.IsCompleted)
{
Thread.Sleep(1000);
}
#endregion
if (UrlProvider.HasMore)
{
continue;
}
_tokenSource.Cancel();
InvokeEvent("done");
Paused = true;
PausedChanged?.Invoke(Paused);
break;
}
}, token);
#endregion
}
private async void RunSingleTask()
{
while (UrlProvider.HasMore)
{
var items = UrlProvider.GetItems(1);
if (items == null)
{
break;
}
if (Paused)
{
break;
}
foreach (var item in items)
{
await RunTaskAsync(item);
}
}
if (!Paused)
{
InvokeEvent("done");
}
Paused = true;
PausedChanged?.Invoke(Paused);
}
