tree 0dfe3b2d202cc654d211534bea8e3d2c541eec77
parent 14ade28cb1fc02e065d0957ecbca25e5d2bd103e
author Oliver, Jonathan <git@jonathanoliver.com> 1401881463 -0600
committer Oliver, Jonathan <git@jonathanoliver.com> 1401881463 -0600

No need to collect barriers--just keep track of the previous one.