Prevent or forbid use of Parallel.ForEach

Question

I wrote a library on top of System.Data.SQLite and realized it (my library) has unpredictable behaviour when using Parallel.ForEach . I might debug this eventually (ie if I get/take the time), most likely by locking the right parts, but for now let's say I want to just prevent usage of Parallel.ForEach , or force usage of my library to allow (or result in) only a single thread, how would I proceed?

Answer 1

You can't control how your API is consumed by external code. If it's something you absolutely cannot address prior to release, it would be a good idea to be very explicit about failure cases in your documentation (both XML comments and any sort of "help file").

Answer 2

A few quick threadstatic attributes might solve your concurrency problem, but this smells like the tip of a much larger iceberg. Fix the root cause, not the symptom.