On Wed, Aug 29, 2012 at 04:57:39PM +0200, Sylvain Munaut wrote:
> How and when will the call back specified in a rbd_completion_t be called ?
>
> Imagine I do a rbd_aio_write and then do while (1); ... I don't see
> how the library could call my callback unless there is threads
> involved (and then my cb would be called in another thread context
> which is not great ...)
I believe it's called from another thread.
> My problem here is that I need to integrate inside the main loop of
> another software and I can't block, but I still need to be able to
> 'notify' when the requests are over. I can ask the scheduler of that
> main loop to call me on some even on a file descriptor (but I don't
> see any fd here), or to call me periodically (but I don't see any call
> to test for completion without waiting for it).
from include/rados/librados.hpp:
struct AioCompletion {
...
bool is_complete();
...
};
Is that sufficient?
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