You have a single shared resource, Sqlite, and you have to synchronize
access. You can use the internal locking in Sqlite and use polling or
wait on a mutex or semaphore.
Alexander Batyrshin wrote:
> Hello All,
>
> I am observing situation, that my concurrency process does not have
> access to SQLite database with equal probability.
>
> Here is example. I have N process that do work like this:
>
> while (1) {
> do_some_work(); // takes ~ 30 sec
> save_work_result_to_sqlite(); // takes ~ 1 sec
> }
>
> So, as you can see, these N process has concurrency access to SQLite database.
> In theory in worst case, save_work_result_to_sqlite() should NOT wait
> for access to database longer than N * 1 sec.
> But in practice, some process blocks on save_work_to_sqlite() more
> than N*2 sec and dies on my SQLITE_BUSY asserts :/
>
> So, I am wondering, is there any ideas how to avoid this?
>
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