As an aside, AnyEvent is fairly portable and has a solution to blocking APIs like DBI. Whether that solution is really a good solution stands to debate - it spawns an external process which executes the fetch and then passes the results back via IPC. In principle, this idea isn't all bad, except that I wouldn't use one external process per query but a separate thread that does all database interaction.

In reply to Re^2: threads and their alternatives by Corion
in thread Alternatives to threads for maintaining GUI app responsiveness by metaperl

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