[eio] where do the callbacks come from?

[Marc Lehmann]

On Sat, Aug 30, 2008 at 01:09:54PM +0200, ryan dahl <ry at ndahl.us> wrote:
> Are the eio_cb callbacks made during eio_poll() or from the worker threads?

Always from eio_poll, i.e. always synchronous to whatever thread calls
eio_poll.

It should also be permissible to call eio_poll concurrently from multiple
threads, as eio_poll properly locks the result queue for each request,
although nobody has tested that so far :)

(it is even permissible to recurse into eio_poll from a callback, this ahs
been tested).

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