On Thu, Oct 31, 2013 at 10:11 AM, Sage Weil <[email protected]> wrote:
> On Thu, 31 Oct 2013, [email protected] wrote:
>> I'm considering using rados callbacks in my application, but the
>> documentation doesn't include enough information about their context.
>> If I schedule a callback with rados_aio_create_completion(), from what
>> context will my callback be called?  Will it be called from a signal
>> handler?  Will it be called from a separate thread?  If I schedule
>> multiple simultaneous callbacks, will they each be called from their
>> own thread or from a single shared callback thread?  Perhaps most
>> importantly, can I call other RADOS API functions from my callback?
>
> The callbacks are currently called from a dedicated callback thread.  In
> particular, it is safe to call back into librados from a callback.  I
> would not rely on them being serialized, though, as that could conceivably
> change in the future.
>
> sage

Thanks.  That's what I needed to know.
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