What you miss here is: We are talking yet only about sharing Storable objects between threads. Closures and lvalues are NOT Storable. And your problem with incrementing shared values isn't new,it's in every threading library. That's why mutexes exist. A mutex in this application could be simply a message "Sequence nrs from A upto B are owned by Thread C". If this message "modifies" key A||B and keys A...B are "modified" with the value A||B (all at seqnr A) then thread C could after querying with seqnr B key A...B be sure it could transact the whole increment using seqnrs A...B. The query with sequence number should result in the value this key had at the time of this sequence number or an error if impossible to say (meaning the lock failed).

BTW a mutex is not Storable.

And no: Only objects referenced FROM the Database must be stored, not anythig that REFERENCES objects in the Database. That restriction applys to Storable too, so it's not outrageous.

In reply to Re^8: Passing globs between threads (Updated). by Anonymous Monk
in thread Passing globs between threads by conrad

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