Lock only on an Id

Question

I have a method which needs to run exclusivley run a block of code, but I want to add this restriction only if it is really required. Depending on an Id value (an Int32) I w

Answer 1

The main semantic issue I see is that an object can be locked without being listed in the collection because the the last line in the lock removes it and a waiting thread can pick it up and lock it.

Change the collection to be a collection of objects that should guard a lock. Do not name it LockedObjects and do not remove the objects from the collection unless you no longer expect the object to be needed.

I always think of this type of objects as a key instead of a lock or blocked object; the object is not locked, it is a key to locked sequences of code.