[ltt-dev] urcu library name-spacing

[mathieu.desnoyers@efficios.com (Mathieu Desnoyers)]

Hi Paul,

We're currently deploying UST (and thus urcu) into MariaDB (it's also deployed
in qemu), and it looks like there are some of our primitives that are causing
namespacing clash, e.g.

list_add
list_del

etc.

So I was wondering how we could proceed to change the namespace to something
that is not too confusing. Using a "rcu_" prefix is out of question, because it
would confuse "rcu-related" primitives (e.g. a primitive designed to be used in
a rcu read-side C.S. or update) with userspace-rcu-related primitives.

E.g., for list.h, we don't want to name these "rcu_list_add" if they are not
RCU-aware.

This would apply to other primitives, e.g.:

barrier()
smp_mb()
....

So I would not want to use a prefix that is too long neither.

So far, for the atomic operations, I've simply done:

atomic_op() -> uatomic_op() (simply prepending a u). Do you think we could use
this technique for the rest ? (e.g. ulist_add, usmp_mb, etc)

Thanks,

Mathieu


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