> -----Original Message----- > From: Stephen Hemminger <step...@networkplumber.org> > Sent: Friday, December 6, 2019 4:31 PM > To: Van Haaren, Harry <harry.van.haa...@intel.com> > Cc: Tom Barbette <barbe...@kth.se>; Perugu Hemasai Chandra Prasad > <hemasaiper...@5g.iith.ac.in>; us...@dpdk.org; dev@dpdk.org > Subject: Re: [dpdk-users] [dpdk-dev] Sharing Data structure between logical > cores in DPDK- regarding
Hey Stephen, [OT] Please watch your snipping of > characters and Wrote: strings, I'm not the original author of the question, but from snipping it looks like that below. > On Thu, 5 Dec 2019 10:54:59 +0000 > "Van Haaren, Harry" <harry.van.haa...@intel.com> wrote: > > > I have a small doubt, can we share a data structure between > > > multiple logical cores in DPDK without locking? > > Sure, learn to use RCU!! Good suggestion, apart from Atomics or Mutex based locking schemes, RCU (Read Copy Update) is another method of (semi) synchronizing/sharing data-structures across threads. DPDK has some RCU mechanics in lib/librte_rcu/ library, perhaps they are of interest. The implementation here is particularly for reclaiming memory after a Quiescent State point has been reached by all threads.
