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Date: Sat, 28 Dec 2013 20:25:00 +0530
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From: Jyotiswarup Raiturkar <jyotisr5@googlemail.com>
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Subject: [dpdk-dev] rte_mempools / rte_rings thread safe?
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Hi

The rte_mempool and rte_ring libs have multi-producer/multi-consumer
versions. But it's also mentioned in the header files that the
implementation is not pre-emtable : " Note: the mempool implementation is
not preemptable. A lcore must not be interrupted by another task that uses
the same mempool (because it uses a ring which is not preemptable)"

I had some questions on the same :

- Does having mutually exclusive core masks for a set of threads which use
the ring/mempool suffice for thread safety ( threads will have different
core ids but they will not be pinned to cores) ?

-  If i want to use this data structures in a pthread ( created outside of
DPDK environment), is it ok to use this if i do
"RTE_DEFINE_PER_LCORE(unsigned, _lcore_id);" with a core_id exclusive of
all other core masks for DPDK processes.

-Jyoti