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Re: [libvirt] [PATCH 1/3] virthread: Introduce virRWLockInitPreferWriter



On Wed, Jul 19, 2017 at 04:31:48PM +0200, Michal Privoznik wrote:
> We already have virRWLockInit. But this uses pthread defaults
> which prefer reader to initialize the RW lock. This may lead to
> writer starvation. Therefore we need to have the counterpart that
> prefers writers. Now, according to the
> pthread_rwlockattr_setkind_np() man page setting
> PTHREAD_RWLOCK_PREFER_WRITER_NP attribute is no-op. Therefore we
> need to use PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP
> attribute. So much for good enum value names.
> 
> Signed-off-by: Michal Privoznik <mprivozn redhat com>
> ---
>  src/libvirt_private.syms |  1 +
>  src/util/virthread.c     | 35 +++++++++++++++++++++++++++++++++++
>  src/util/virthread.h     |  1 +
>  3 files changed, 37 insertions(+)

Reviewed-by: Pavel Hrdina <phrdina redhat com>

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