[lttng-dev] [RELEASE] Userspace RCU 0.9.2

Mathieu Desnoyers mathieu.desnoyers at efficios.com
Tue Apr 26 21:20:53 UTC 2016


This Userspace RCU library 0.9.2 release is mainly a bugfix release,
but also adds support for the membarrier system call on hppa, and
sparc64. It also adds support for the Xeon-Phi, now considered as
a new architecture instead of a vendor in MPSS. It also adds a
compability API allowing using wfcqueue from C++.

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 multiple
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.

2016-04-26 Userspace RCU 0.9.2
        * wfcqueue: add C++ compatibility API
        * Fix: CDS_WFCQ_WOULDBLOCK typing for c++
        * Fix: configure.ac: check for possibly required libs for clock_gettime
        * Fix: handle reference count overflow
        * Fix: compat_futex should work-around futex signal-restart kernel bug
        * Support for Xeon-Phi with newer MPSS
        * sparc64: allocate membarrier system call number
        * hppa: allocate membarrier system call number
        * Fix build on non-Linux Debian ports
        * Fix: urcu-signal: smp_mb_master() needs registry lock
        * Fix: rculfhash only needs to include urcu-pointers.h
        * Fix: out-of-tree benchmark/regtest

Project website: http://liburcu.org
Git repository: git://git.liburcu.org/urcu.git

Mathieu Desnoyers
EfficiOS Inc.

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