On 13-09-26 02:20 PM, Thibault, Daniel wrote: > Date: Thu, 26 Sep 2013 12:16:29 -0400 > From: Julien Desfossez <[email protected]> > >> When the consumer needs to read a subbuffer, it performs a get_subbuf >> operation. If this operation succeeds, >> the consumer has exclusive access to this subbuffer and so it can read it >> safely. If it fails, it means the tracer is >> currently using it and in the case of snapshots, the consumer will just skip >> to the next one (up to the end >> position it defined at the beginning of the snapshot). >> >> Julien > > Presumably the tracers also use get_subbuf, so what happens if they are > refused access because the consumer > got the sub-buffer first? Do they wait for the consumer to relinquish the > sub-buffer, or do they skip ahead? They skip ahead.
Julien > > Daniel U. Thibault > Protection des systèmes et contremesures (PSC) | Systems Protection & > Countermeasures (SPC) > Cyber sécurité pour les missions essentielles (CME) | Mission Critical Cyber > Security (MCCS) > R & D pour la défense Canada - Valcartier (RDDC Valcartier) | Defence R&D > Canada - Valcartier (DRDC Valcartier) > 2459 route de la Bravoure > Québec QC G3J 1X5 > CANADA > Vox : (418) 844-4000 x4245 > Fax : (418) 844-4538 > NAC : 918V QSDJ <http://www.travelgis.com/map.asp?addr=918V%20QSDJ> > Gouvernement du Canada | Government of Canada > <http://www.valcartier.drdc-rddc.gc.ca/> > > _______________________________________________ > lttng-dev mailing list > [email protected] > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev > _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
