Pthread spinlock support

Eric Wong normalperson at
Thu Jan 23 16:35:27 PST 2014

Jason Evans <jasone at> wrote:
> Furthermore, on Linux jemalloc uses adaptive mutexes,
> which IIRC spin before blocking.

Heh, I just attempted to write some other code using
PTHREAD_MUTEX_ADAPTIVE_NP based on this comment and realized
PTHREAD_MUTEX_ADAPTIVE_NP is not a macro and the adaptive mutex doesn't
get used on Linux jemalloc.

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