Hi,
This is a release announcement for liburcu 0.14.2 and 0.15.6,
respectively for the stable 0.14 and 0.15 branches.
The most relevant fix is for the 0.15 branch, where urcu-qsbr
and urcu-mb flavors were missing a barrier between store to
update the per-thread reader counter and the following relaxed
load of the futex waiting state.
* New in this release:
Changelog:
2026-01-26 Userspace RCU 0.15.6
* urcu-mb: Add missing TSAN annotation to _urcu_mb_read_lock_update
* lfstack: Coding style cleanup
* urcu-qsbr: Use CMM_SEQ_CST_FENCE for _urcu_qsbr_thread_online
* urcu-mb: Use CMM_SEQ_CST_FENCE for _urcu_mb_read_lock_update
* urcu-qsbr: Use CMM_SEQ_CST_FENCE for quiescent state update and
offline
* urcu-mb: Use CMM_SEQ_CST_FENCE for
_urcu_mb_read_unlock_update_and_wakeup
* Fix: Only include linux/time_types.h when __NR_futex_time64 is defined
* Use __NR_futex_time64 in futex syscall wrapper
2026-01-26 Userspace RCU 0.14.2
* Fix: Only include linux/time_types.h when __NR_futex_time64 is defined
* Use __NR_futex_time64 in futex syscall wrapper
* Cleanup: Remove useless declarations from urcu-qsbr
* src/urcu-bp.c: assert => urcu_posix_assert
Project website: https://liburcu.org
Git repository: https://git.liburcu.org/userspace-rcu.git
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com
