optimize timeout judgement according to different condition#187

Merged

mikaelarguedas merged 3 commits intoros2:masterfrom jwang11:master

Feb 7, 2018

+9-21

Commits on Jan 22, 2018

optimize timeout judgement according to different condition
jwang11
committed

Commits on Jan 25, 2018

replace cv->wait(lock) with cv->wait(lock, predicate) and simplify timeout logic
jwang11
committed

Commits on Jan 31, 2018

Improve logic to return TIMEOUT when not hasData && timeout->sec/nsec==0
jwang11
committed