[openib-general] Re: uverbs comp events

[Arlin Davis]

Roland Dreier wrote: 

    Sean> I think that the issue that Arlin is hitting is that once he


    Sean> calls blah_get_event() he doesn't have an easy way to


    Sean> release the thread. This may turn out to be a uCM / uAT


    Sean> issue, and not a verbs issue.





I thought about this some more.  I think the real issue is probably


that the app is sleeping blah_get_event() on a blocking fd.  If the


app doesn't want to block in that function forever, then it should use


poll() with a wake-up pipe() fd as well as the event fd.  (I'm also


not sure what's so bad about pthread_kill() as a wake-up)





 - R.

The application (udapl completion thread) is polling on the FD so it is very easy to add a pipe() fd
to wakeup. I was just expecting the close_fd in ibv_close_device() to wakeup the poll (or blocking
get_event) so I could exit the thread without a pipe or a kill. 

pthread_kill requires me to add a sig_handler to catch the signal and since uDAPL is a library,
there is a chance of uDAPL replacing a signal handler already setup by the application for the
process group. 

-arlin

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openfabrics.org/pipermail/general/attachments/20050822/2be6f82e/attachment.html>