我正在将线程安装到我的Azure代码中,以便将队列放入队列中。为此,我使用http://www.microsoft.com/download/en/details.aspx?id=19222作为参考。Task.Wait在ContinueWhenAll Action
我的代码来排队多个消息看起来像这样:
public void AddMessagesAsync(IEnumerable<IQueueMessage> messages, string queue = null, TimeSpan? timeToLive = null)
{
//check if we need to switch queues
if (!String.IsNullOrEmpty(queue))
{
SetCurrent(queue);
}
//setup list of messages to enqueue
var tasks = new List<Task>();
Parallel.ForEach(messages, current => {
if (timeToLive.HasValue)
{
//create task with TPL
var task = Task.Factory.FromAsync(Current.BeginAddMessage, Current.EndAddMessage, Convert(current), timeToLive.Value, tasks);
//setup continuation to trigger eventhandler
tasks.Add(task.ContinueWith((t) => AddMessageCompleted(t)));
}
else
{
//create task with TPL
var task = Task.Factory.FromAsync(Current.BeginAddMessage, Current.EndAddMessage, Convert(current), tasks);
//setup continuation to trigger eventhandler
tasks.Add(task.ContinueWith((t) => AddMessageCompleted(t)));
}
});
//setup handler to trigger when all messages are enqueued, a we are blocking the thread over there to wait for all the threads to complete
Task.Factory.ContinueWhenAll(tasks.ToArray(), (t) => AddMessagesCompleted(t));
}
private void AddMessagesCompleted(Task[] tasks)
{
try
{
//wait for all tasks to complete
Task.WaitAll(tasks);
}
catch (AggregateException e)
{
//log the exception
var ex = e;
//return ex;
}
if (AddedMessages != null)
{
AddedMessages(tasks, EventArgs.Empty);
}
}
现在的问题是关于在Task.Wait延续(这是根据由MS提供的文件)。等待你已经知道已经完成的线程似乎有点奇怪?我能想象的唯一原因就是冒泡和处理这些错误。我在这里错过了什么?
我想我们同意我的假设呢? –
@迪迪耶是的 - 忘记那部分在我的回答:) – Skomski