public void EnqueueNormalTask(HttpDownTask task)
{
lock (downloadQueue)
{
downloadQueue.Enqueue(task);
}
}
public long DownLoadOneFile(string fileUrl, string savePath, bool highPriority = false, bool erase = false)
{
HttpWebRequest request = HttpClient.getWebRequest(fileUrl, 0);
WebResponse response = request.GetResponse();
long fileLength = response.ContentLength;
long taskId = GenerateTaskId();
HttpDownTask downloadTask = new HttpDownTask(taskId, fileUrl, savePath, fileLength, erase);
if (true == highPriority)
{
EnqueueHighPriorityTask(downloadTask);
}
else
{
EnqueueNormalTask(downloadTask);
}
// 添加到所有任务列表
allTaskMap.Add(taskId, downloadTask);
request.Abort();
response.Close();
return(taskId);
}
public void EnqueueHighPriorityTask(HttpDownTask task)
{
lock (highPriorityQueue)
{
highPriorityQueue.Enqueue(task);
}
}
public long DownLoadOneFile(string fileUrl, string savePath, int totalLength, bool highPriority = false, bool erase = false)
{
long fileLength = totalLength;
long taskId = GenerateTaskId();
HttpDownTask downloadTask = new HttpDownTask(taskId, fileUrl, savePath, fileLength, erase);
if (true == highPriority)
{
EnqueueHighPriorityTask(downloadTask);
}
else
{
EnqueueNormalTask(downloadTask);
}
// 添加到所有任务列表
allTaskMap.Add(taskId, downloadTask);
return(taskId);
}
public void DownloadCheck()
{
//List<Thread> finishList = new List<Thread>();
List <HttpDownTask> finishList = new List <HttpDownTask>();
while (true)
{
//foreach(KeyValuePair<Thread, HttpDownTask> pair in downloadThreadMap)
//{
// Thread downloadThread = pair.Key;
// if((pair.Key.ThreadState == ThreadState.Stopped)
// || (pair.Key.ThreadState == ThreadState.Aborted))
// {
// finishList.Add(pair.Key);
// }
//}
foreach (HttpDownTask pair in downloadThreadMap)
{
//Thread downloadThread = pair.Key;
//if ((pair.Key.ThreadState == ThreadState.Stopped)
// || (pair.Key.ThreadState == ThreadState.Aborted))
if (pair.finished)
{
finishList.Add(pair);
}
}
// 清理下载完成的任务
foreach (HttpDownTask finishThread in finishList)
{
downloadThreadMap.Remove(finishThread);
}
finishList.Clear();
// 当前线程处理已满
if (downloadThreadMap.Count >= maxThreadNum)
{
Thread.Sleep(100);
continue;
}
HttpDownTask curTask = null;
//Thread curThread;
// 有空闲线程，则尝试开启下载任务
while ((GetHighPriorityQueueCount() > 0) && (downloadThreadMap.Count < maxThreadNum))
{
curTask = DequeueHighPriorityTask();
if (null != curTask)
{
//LogSys.Info("taskid[{0}] Begin to down normal file[{1}]", curTask.taskId, curTask.downLoadUrl);
ThreadPool.QueueUserWorkItem(new WaitCallback(curTask.DownLoadFile), 1);
//curThread = new Thread(new ThreadStart(curTask.DownLoadFile));
//downloadThreadMap.Add(curThread, curTask);
downloadThreadMap.Add(curTask);
//curThread.Start();
}
}
while ((downloadThreadMap.Count < maxThreadNum) && (GetNormalQueueCount() > 0))
{
curTask = DequeueNormalTask();
if (null != curTask)
{
//LogSys.Info("taskId[{0}] Begin to down high priority file[{1}]", curTask.taskId, curTask.downLoadUrl);
ThreadPool.QueueUserWorkItem(new WaitCallback(curTask.DownLoadFile), 1);
//curThread = new Thread(new ThreadStart(curTask.DownLoadFile));
downloadThreadMap.Add(curTask);
//curThread.Start();
}
}
if (!IsBusy())
{
// 已经空闲了
Thread.Sleep(100);
}
}
}
