// Call this method before starting blocking operation.
// Dispose result after operation is done.
public BlockingOperation NewOp()
{
lock (this)
{
// Try to find free handler
BlockingOperation o = operations;
while (o != null)
{
if (o.Thread == null)
{
o.Thread = Thread.CurrentThread;
return(o);
}
else
{
o = o.Next;
}
}
// Create new handler and append other handlers
o = operations;
operations = new BlockingOperation(Thread.CurrentThread);
operations.Next = o;
return(operations);
}
}
// Abort all blocking operations.
public void Abort()
{
lock (this)
{
BlockingOperation o = operations;
while (o != null)
{
if (o.Thread != null)
{
o.Abort();
}
o = o.Next;
}
}
}