/// <remarks>
/// Get the first task, if the running time hasn't been
/// reached then wait a bit and retry. Else reschedule the task and then
/// run it.
/// </remarks>
/// <summary>
/// If the task queue is empty, sleep until a task comes in or if slept
/// for too long, suspend the thread.
/// </summary>
private void _run()
{
long elapsedTime;
long interval;
try
{
while (true)
{
lock (this)
{
if (thread == null)
{
return;
}
}
Task task = null;
bool lockReAcquired = true;
lock (queue)
{
if (queue.IsEmpty)
{
lockReAcquired = Monitor.Wait(queue, (int)suspend_interval);
}
if (lockReAcquired)
{
QueuedEvent e = queue.Peek();
if (e != null)
{
lock (e)
{
interval = e.Interval;
task = e.Task;
if (task.IsCancelled())
{
queue.Pop();
continue;
}
elapsedTime = e.ElapsedTime;
if (elapsedTime >= interval)
{
// Reschedule the task
queue.Pop();
if (e.ReQueue())
{
queue.Push(e);
}
}
}
if (elapsedTime < e.Interval)
{
Monitor.Wait(queue, (int)(e.Interval - elapsedTime));
continue;
}
}
}
}
lock (this)
{
if (queue.IsEmpty && !lockReAcquired)
{
_suspend();
return;
}
}
try
{
if (task != null)
{
if (_concurrent)
{
ThreadPool.QueueUserWorkItem(ExecuterCallback, task);
}
else
{
task.Run();
}
}
}
catch (Exception ex)
{
Trace.error("TimeScheduler._run()", ex.ToString());
}
}
}
catch (ThreadInterruptedException ex)
{
Trace.error("TimeScheduler._run()", ex.ToString());
}
}
/// <remarks>
/// Get the first task, if the running time hasn't been
/// reached then wait a bit and retry. Else reschedule the task and then
/// run it.
/// </remarks>
/// <summary>
/// If the task queue is empty, sleep until a task comes in or if slept
/// for too long, suspend the thread.
/// </summary>
private void _run()
{
long elapsedTime;
long interval;
try
{
while (true)
{
lock (this)
{
if (thread == null)
{
return;
}
}
Task task = null;
bool lockReAcquired = true;
lock (queue)
{
if (queue.IsEmpty)
{
lockReAcquired = Monitor.Wait(queue, (int)suspend_interval);
}
if (lockReAcquired)
{
QueuedEvent e = queue.Peek();
if (e != null)
{
lock (e)
{
task = e.Task;
if (task.IsCancelled())
{
queue.Pop();
continue;
}
elapsedTime = e.ElapsedTime;
interval = e.Interval;
if (elapsedTime >= interval)
{
// Reschedule the task
queue.Pop();
if (e.ReQueue())
{
queue.Push(e);
}
}
}
if (elapsedTime < interval)
{
// argument out of range exception, might be fixed with this check.. hopefully
if (interval - elapsedTime > 0)
{
if ((interval - elapsedTime) > Int32.MaxValue)
{
Monitor.Wait(queue, Int32.MaxValue);
}
else
{
Monitor.Wait(queue, (int)(interval - elapsedTime));
}
}
continue;
}
}
}
}
lock (this)
{
if (queue.IsEmpty && !lockReAcquired)
{
_suspend();
return;
}
}
try
{
if (task != null && task.Enabled)
{
task.Run();
}
}
catch (Exception ex)
{
Trace.error("TimeScheduler._run()", ex.ToString());
}
}
}
catch (ThreadInterruptedException ex)
{
Trace.error("TimeScheduler._run()", ex.ToString());
}
}