End Google Ads 201810 - BS.net 01 --> Happy New Year ! to all.

Just wondering if someone would give me a bit of guidance on this.
I need to signal various points of code execution from a windows service to a monitoring application on the same machine.
This is apart from those handled by "Service controller class".
I have had a look at tcp sockets, .net remoting and named pipes, but that all seems like overkill.
As i am simply looking for a boolean flag, no messages or data transfer as such.

Has anyone found a simple way of doing this,i know i must be missing something ?

Thanks in advance.