It looks like BEGIN EXCLUSIVE TRANSACTION should do essentially the same thing as I was using a named lock for, explicitly preventing other processes from reading/writing until the transaction is ended.

As SQLite has support for transactions, when writting the script inside Re^4: A per-instance shared queue among forked child processes? I use them but then I found that too many of them failed due to collisions so I change the code to use an additional atomic reserve step.

Now, it...

  1. looks for some element from the queue,
  2. tries to atomically reserve it and
  3. deletes it

In reply to Re: A per-instance shared queue among forked child processes? by salva
in thread A per-instance shared queue among forked child processes? by EvanK

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