Although I am not fully conversant with it, there seems to be a lack of a coherent structure here. You seem to be opening files WELL before you need to write them. Write a set of modules that will do all your file I/O for you. Have it do the following:
  1. Check to see if the file is locked. (Are you doing this right now??)
  2. Take a lock on the file or block until you can.
  3. Open the file
  4. read/write/append/whatever
  5. Close the file.
  6. Release the lock.
I would seriously look at doing these steps EVERY time you want to do some sort of file interaction. If you're not interacting with the file at that moment, you don't have a filehandle open. It may seem wasteful, but you have greater concerns than CPU optimization, namely synchronization.

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Vote paco for President!

In reply to Re: File locking, lock files, and how it all sucks by dragonchild
in thread File locking, lock files, and how it all sucks by tocie

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