Re: pthread library related

[christos%zoulas.com@localhost (Christos Zoulas)]

On May 30,  1:43pm, charles.cui1984%gmail.com@localhost (Charles Cui) wrote:
-- Subject: Re: pthread library related

| I am not familiar with _nv() (are there examples in the netbsd code base? I
| searched _nv() in nxr, but did not found anything meaningful.),
| but if you want to use atomic operations, one possible way is
| compare-and-swap (CAS).
| it has stronger guarantee than atomic inc or atomic dec, but also larger
| overhead.

man atomic_inc_uint_nv

http://nxr.netbsd.org/xref/src/sys/fs/tmpfs/tmpfs_mem.c#185

christos