Userspace RCU 0.6.4

liburcu is a LGPLv2.1 userspace RCU (read-copy-update) library. This data synchronization library provides read-side access which scales linearly with the number of cores. It does so by allowing multiples copies of a given data structure to live at the same time, and by monitoring the data structure accesses to detect grace periods after which memory reclamation is possible.

Changelog:
* uatomic: Fix ARM build errors in uatomic.
* urcu tests: hold mutex across use of custom allocator.
* Portability fixes to support FreeBSD 8.2.

Project website: http://lttng.org/urcu
Download link: http://www.lttng.org/files/urcu/

Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com