public static void CancelUserTask(ClientHandle clientToken)
{
var l1 = Instance.syncLock;
lock (l1)
//lock(_instance)
{
var thandle = Instance.ReadyQueue.FirstOrDefault((th) => th.Token.ID == clientToken.ID);
if (thandle != null) // in case task is still in queue only
{
thandle.task = null;
thandle.callback = null;
thandle.Token = null;
}
else // in case theread is running the task - try aborting the thread to cancel the operation (rude behavior)
{
int itemCount = Instance.ReadyQueue.Count;
TaskItem taskItem = null;
var l2 = Instance.criticalLock;
lock (l2)
{
taskItem = Instance.Pool.FirstOrDefault(task => task.taskHandle.Token.ID == clientToken.ID);
}
if (taskItem != null)
{
lock (taskItem) // only item need the locking
{
if (taskItem.taskState != TaskState.completed) // double check - in case by the time this lock obtained callback already happened
{
taskItem.taskState = TaskState.aborted;
taskItem.taskHandle.callback = null; // stop callback
}
if (taskItem.taskState == TaskState.aborted) // this does not need criticalLock
{
try
{
taskItem.handler.Abort(); // **** it does not work ****
taskItem.handler.Priority = ThreadPriority.BelowNormal;
taskItem.handler.IsBackground = true;
}
catch (Exception e)
{
logger.Error("", e);
}
}
}
}
}
}
}
public static bool Execute(UserTask task, object state, Action <TaskStatus> callback)
{
ClientHandle ch = CustomThreadPool.Instance.QueueUserTask(task, state, callback);
return(true);
}
public static bool Execute(UserTask task)
{
ClientHandle ch = CustomThreadPool.Instance.QueueUserTask(task);
return(true);
}
