title: Is there a global named reader/writer lock?
body: <p>I have multiple asp.net web apps serving a set of files. Periodically, one will update the file before serving it, but it can't update the file if it is in use.</p>
  
  <p>I could solve this issue by using a named mutex where the name is the file path (replacing the invalid characters of course). I've used this in other situations, but you can see how inefficient it is. Only one process will be able to serve the file at a time.</p>
  
  <p>A reader/writer lock would be perfect, but they are designed to work within a single process. Plus I'd have to create a reader/writer lock for every file that might get updated, and there are a lot.</p>
  
  <p>What I really need is a reader/writer lock that can be named like a mutex. Is there such a thing? Or can such a thing be created using the existing locks?</p>