I cannot read your code - you need code tags for formatting.

If I understand ikegami correctly, you can only use a DB handle in the thread that created it. Regardless of any concurrent operations.

Perhaps you can back up and explain your application a bit better? Also be aware that write performance of SQLite is very slow in a multi-writer scenario because the writer must obtain an exclusive lock on the DB file. Concurrent reads from multiple threads is fine. Each thread must have its own DB handle.

Update: I would recommend that you come up with a simple model of what you expect your application to be doing. You can fiddle with this to run various benchmarks, etc. I would let the DB handle all of the file locking. There is no need for you to serialize the requests yourself. Again, I am a bit lost because I don't understand your app.

In reply to Re^3: threads::shared referencing confusion by Marshall
in thread threads::shared referencing confusion by Anonymous Monk

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