> On 9/05/10 11:28 PM, "tanlin" <[email protected]> wrote: > >> >> Hi,kusy >> I'm a graduate student of the department of computer science of >> Nanjing Univercity in China. >> Recently, I was reading your paper "The Flooding Time Synchronization >> Protocol" and have studied the >> implementation code of FTSP , and questions arised about the following >> code: >> void task processMsg() >> { >> TimeSyncMsg* msg = (TimeSyncMsg*)(call Send.getPayload(processedMsg, >> sizeof(TimeSyncMsg))); >> if( msg->rootID < outgoingMsg->rootID && >> // jw: after becoming the root ignore other roots messages (in >> send period) >> !(heartBeats < IGNORE_ROOT_MSG && outgoingMsg->rootID == >> TOS_NODE_ID) ) >> >> I was wondering What you use the judge !(heartbeats < IGNORE_ROOT_MSG) for >> ?What's its functionality here? >> I think it is used to ignore the messages contained the failed root. >> Detail >> about such a situation may be like this: >> the root failed, but the other nodes still transmit the synchronization >> message which used the failed root as the >> message's root. This may cause that the remain nodes would synchronize to a >> failed root. Did I catch the point? >> or there is some other consideration ? can you give me more informaiton >> about it ？ yes, your observation is correct. i've updated the confusing comment in the code.
thanks! brano >> Your kind help will be appreciated, Looking forward. >> Best Regards! >> >> Tanlin >> 2010-05-06 >> >> >> >> tanlin > > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
