🚀 go-pugleaf

In article <5918@killer.DALLAS.TX.US> (Jim Pritchett) writes:
>                          ...  I'm sure that there is a problem with my
>(mis)understanding of locks, but I don't know what it is.  

Locks are "funny" but once you get to know them they can be your friends.
Point #1 Lock() returns a BPTR to a FileLock structure, *not* a pointer.
Point #2 Only unlock what you lock.

Check this out ...
->  lockram = Lock("ram:t", ACCESS_READ);	/* cool you get a lock */
->  lockcd = CurrentDir(lockram);
->  UnLock(lockram);				/* Once */
->  lockram = CurrentDir(lockcd);		
->  UnLock(lockcd);				/* Twice */
->  UnLock(lockram);				/* Three times your out. */
->}

The only lock you can legally unlock is the one in lockram originally.
When you entered you had a lock in CurrentDir (which you don't "own")
and you didn't leave one there when you left. Understand?

--Chuck McManis
uucp: {anywhere}!sun!cmcmanis   BIX: cmcmanis  ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.