[lttng-dev] [RELEASE] Userspace RCU 0.9.3

Mathieu Desnoyers mathieu.desnoyers at efficios.com
Wed Nov 30 21:15:58 UTC 2016

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.

This is mainly a bugfix release, with noteworthy changes:
- Adds GNU Hurd support,
- Bumps the library current version and age because we added missing
  destroy functions for queues and stacks,
- Quite a few MacOS X support fixes.


2016-11-30 Userspace RCU 0.9.3
        * Fix: rcutorture: work-around signal issue on mac os x
        * Fix: rcutorture should register thread using call_rcu
        * Fix: remove AC_FUNC_MALLOC from configure.ac
        * Fix: update ax_pthread macro to handle newer clang
        * Update library current version due to adding destroy API
        * Fix: Use pthread_self to get threadid on OSX
        * Fix: examples: use destroy API for queues/stacks
        * Update library age due to new stack/queue destroy API
        * Fix: tests: invoke destroy APIs for queues/stacks
        * Fix: add missing destroy functions to queues/stack APIs
        * Fix: add missing __cds_wfcq_init for LGPL API
        * Fix: memory leak on hash table destroy
        * Fix: Add failover for platforms without nproc
        * Fix: use clock_get_time for caa_get_cycles fallback on MacOSX
        * Fix: syscall-compat.h MacOSX support
        * Fix: Add solaris-build.md to dist
        * Port: build shared libraries in Cygwin
        * Port: fix compatibility header for Cygwin
        * Add GNU Hurd support to syscall-compat.h
        * Add support for aarch64_be
        * Fix: urcu-bp: re-initialize list head on library exit
        * Fix: examples make distcheck failure

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

Mathieu Desnoyers
EfficiOS Inc.

More information about the lttng-dev mailing list