// From https://stackoverflow.com/questions/4359910/is-it-possible-to-abort-a-task-like-aborting-a-thread-thread-abort-method
// jtrem's answer, but of course, with a "Don't Do This!!!" hahaha.
protected async void CancellableCall(ProcessCall rc, int msTimeout)
{
var cts = new CancellationTokenSource();
var task = Task.Factory.StartNew(() =>
{
try
{
using (cts.Token.Register(Thread.CurrentThread.Abort))
{
rc.MakeCall();
}
}
catch (ThreadAbortException ex)
{
try
{
ProcessInstance(Logger, new ST_Exception(ex), true);
}
catch { }
}
catch (Exception ex)
{
try
{
ProcessInstance(Logger, new ST_Exception(ex), true);
}
catch { }
}
}, cts.Token);
if (!(await Task.WhenAny(task, Task.Delay(msTimeout)) == task))
{
cts.Cancel();
}
}
protected void Call(ProcessCall rc)
{
try
{
rc.MakeCall();
}
catch (Exception ex)
{
Exception ex2 = ex;
// Prevent recursion if the exception process itself throws an exception.
if (!(rc.SemanticInstance is ST_Exception))
{
ProcessInstance(Logger, new ST_Exception(ex), true);
}
while (ex2.InnerException != null)
{
ex2 = ex2.InnerException;
// Prevent recursion if the exception process itself throws an exception.
if (!(rc.SemanticInstance is ST_Exception))
{
ProcessInstance(Logger, new ST_Exception(ex2), true);
}
}
}
finally
{
if ((rc.Receptor is IDisposable) && (rc.AutoDispose))
{
((IDisposable)rc.Receptor).Dispose();
}
}
}
protected ProcStates Call(ProcessCall rc)
{
try
{
if (rc.Timeout == 0)
{
rc.MakeCall();
}
else
{
// rc.MakeCall();
CancellableCall(rc, rc.Timeout);
}
// This is totally wrong:
//if (msTimeout != 0)
//{
// bool ok = Thread.CurrentThread.Join(msTimeout);
// if (!ok)
// {
// return ProcStates.Timeout;
// }
//}
return(ProcStates.OK);
}
catch (Exception ex)
{
Exception ex2 = ex;
// Prevent recursion if the exception process itself throws an exception.
if (!(rc.SemanticInstance is ST_Exception))
{
try
{
ProcessInstance(Logger, new ST_Exception(ex), true);
}
catch { }
}
return(ProcStates.Exception);
// The ST_Exception handler should deal with inner exceptions.
/*
* while (ex2.InnerException != null)
* {
* ex2 = ex2.InnerException;
* // Prevent recursion if the exception process itself throws an exception.
* if (!(rc.SemanticInstance is ST_Exception))
* {
* try
* {
* ProcessInstance(Logger, new ST_Exception(ex2), true);
* }
* catch { }
* }
* }
*/
}
finally
{
// TODO:
// This looks wrong as well. If the call is on a thread, the receptor should be disposed once the call completes.
// And oddly enough, we're setting autodispose to false on synchronous calls! The logic for this needs to be fixed,
// so that dispose is called only on receptors that are created by the SP.
//if ( (rc.Receptor is IDisposable) && (rc.AutoDispose) )
//{
// ((IDisposable)rc.Receptor).Dispose();
//}
}
}
