Userspace RCU 0.7.4

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.

liburcu-cds provides efficient data structures based on RCU and lock-free algorithms. Those structures include hash tables, queues, stacks, and doubly-linked lists.

The main change in this version is the added support for MIPS, contributed by Ralf Baechle.

Changelog:
2012-08-27 Userspace RCU 0.7.4
* rculfhash API documentation: document destroy RCU read-lock constraint
* Fix: rculfhash should be offline while waiting for resize to complete
* Add missing entry to gitignore
* urcu: move busy-wait code and name it ___cds_wfq_node_sync_next()
* urcu: fix compat_futex_noasync()
* urcu: add hint to DEFINE_URCU_TLS() for compound types
* Fix: CAA_BUILD_BUG_ON should refer to CAA_BUILD_BUG_ON_ZERO
* Add MIPS support
* Compatibility: remove bash-ismsm from test scripts
* Fix inappropriate lib behavior: don't call exit()
* Fix: re-enable compatibility with autoconf < 2.64
* Fix c99 compatibility: use __asm__ and __volatile__ in public headers
* Fix c99 compatibility: use __typeof__ instead of typeof in public headers
* warning fix: tests urcutorture for NetBSD 5

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