snetdev/lpel — pull request #21 by nguyenvuthiennga (2013-05-07 20:26:10+00:00)
Title: new lock in stream and bug fixing

- use new lock (instead of reusing prod_lock) to support update prod_sd/cons_sd. This is to separate lock usages: one for polling (prod_lock) and one for update stream descriptor (sd_lock).
- fix bug: trivial, LpelStreamConsumer/Producer should check if stream
is null