[lttng-dev] [RELEASE] Userspace RCU 0.7.3

Mathieu Desnoyers mathieu.desnoyers at efficios.com
Fri Jun 1 14:05:33 EDT 2012

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.

This is a minor compatibility-related release, fixing build issues with
FreeBSD and NetBSD. On Linux, only the test_perthreadlock fix could
change the result of make check (which could previously fail due to
non-initialized mutexes), but it does not impact anything installed on
the system.

2012-06-01 Userspace RCU 0.7.3
        * Fix tests: make dist lib dependency
        * Update README for OS supported, tests dependency
        * Add CodingStyle to tarball
        * Add coding style document
        * Test fix: test_perthreadlock uninitialized mutex
        * tests: support FreeBSD short "time" args
        * freebsd 8.2 fix: define MAP_ANONYMOUS for compatibility

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

Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.

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