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From: Flavio Baronti <f.baronti-ngIpsMLAhaq41k5uCYKmRQ@public.gmane.org>
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: When is it safe to release connection resources?
Date: Thu, 29 Dec 2011 17:42:35 +0100	[thread overview]
Message-ID: <4EFC987B.6070901@list-group.com> (raw)

Hello,

I'm new to RDMA development and I have a question regarding resource release.
If I understood correctly, when ibv_get_cq_event returns, it holds some sort of lock over the completion queue, which is 
released when I call ibv_req_notify_cq. This lock is checked also in ibv_destroy_cq, so that:
1) When ibv_destroy_cq returns, I am certain that there is no thread running somewhere between ibv_get_cq_event and 
ibv_req_notify_cq
2) When ibv_destroy_cq returns, I am certain that ibv_get_cq_event will not return the destroyed cq any more.

Is all this correct?

Thanks
Flavio
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             reply	other threads:[~2011-12-29 16:42 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-29 16:42 Flavio Baronti [this message]
     [not found] ` <4EFC987B.6070901-ngIpsMLAhaq41k5uCYKmRQ@public.gmane.org>
2011-12-31 10:55   ` When is it safe to release connection resources? Bart Van Assche
2012-01-02 16:39   ` Hefty, Sean
     [not found]     ` <1828884A29C6694DAF28B7E6B8A8237325662B63-P5GAC/sN6hlcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2012-01-04  9:42       ` Flavio Baronti
     [not found]         ` <4F041F19.1070608-ngIpsMLAhaq41k5uCYKmRQ@public.gmane.org>
2012-01-04 16:04           ` Hefty, Sean
2012-01-04 19:53       ` Bart Van Assche
     [not found]         ` <CAO+b5-qHFFg-KKQQkEZ2sS_+TWAFCJ0Ed4XGV15cs==_9zttSw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-01-04 20:05           ` Hefty, Sean
     [not found]             ` <1828884A29C6694DAF28B7E6B8A823732566B335-P5GAC/sN6hmkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2012-01-05 11:23               ` Bart Van Assche
     [not found]                 ` <CAO+b5-pk8v-1+STkYXmwTv2nKyQJcZd575dJW6Hipfo5_AchwA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-01-05 17:29                   ` Roland Dreier
     [not found]                     ` <CAL1RGDXtZA=6uvCE73isD7cu2=LU4b3CGPs4g7UMPmW=1xqgww-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-01-07  9:59                       ` Bart Van Assche

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