Hi, Following our discussion I went ahead and did some experiments for converting LUCreateInstance. I found out that we can't wait till Exec() to add the new instance's locks, it must be done at ExpandNames() or DeclareLocks() time. After that we'll have locked node locks, and the locking library won't allow us to lock (or add) any instance lock.
(It can't allow us because if if did we would have the following deadlock: thread1: lock all instances (with set-lock) thread2: lock node1 thread1: wait for node1 (held by thread2) thread2: wait for lock-add (lock-set held by thread1) ) So the options we have are: 1) Do it sometimes in ExpandNames() or DeclareLocks(), but then we need some .CleanupLocks() function called in "finally" to remove/release the instance lock 2) Add a way to declare lock additions too, which leaves the job in mcpu, but adds more protocol between LUs and the Processor Any preference? Thanks, Guido
