On Wed, Aug 07, 2013 at 05:02:42PM -0700, Kais Belgaied wrote:
> proposed changes look good.
> comment needed regarding the reason for internally managed per-thread data
> (limitation of Posix' PTHREAD_KEYS_MAX)
Hmm, I thought that was more about patch 3. I updated that patch's
commit message to:
ovs-thread: New function ovsthread_id_self().
I foresee a need for possibly large numbers of instances of "struct
seq" (which is introduced in an upcoming patch). Each struct seq
needs some per-thread data. POSIX has pthread_key_t for this, but
the number of keys can be fairly limited, to as few as 128. It is
reasonable to work around this by using a hash table indexed on the
current thread. That only works if one can get a thread identifier
that is hashable (pthread_t is not). This patch introduces a
hashable thread identifier.
Signed-off-by: Ben Pfaff <[email protected]>
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