Thread (65 messages) 65 messages, 6 authors, 2018-08-17

Re: [PATCH v5 0/8] Add read-write concurrency to rte_hash library

From: Thomas Monjalon <hidden>
Date: 2018-07-12 21:03:09

10/07/2018 18:59, Yipeng Wang:
This patch set adds the read-write concurrency support in rte_hash.
A new flag value is added to indicate if read-write concurrency is needed
during creation time. Test cases are implemented to do functional and
performance tests.

The new concurrency model is based on rte_rwlock. When Intel TSX is
available and the users indicate to use it, the TM version of the
rte_rwlock will be called. Both multi-writer and read-write concurrency
are protected by the rte_rwlock instead of the x86 specific RTM
instructions, so the x86 specific header rte_cuckoo_hash_x86.h is removed
and the code is infused into the main .c file.

A new rte_hash_count API is proposed to count how many keys are inserted
into the hash table.

Yipeng Wang (8):
  hash: fix multiwriter lock memory allocation
  hash: fix a multi-writer race condition
  hash: fix key slot size accuracy
  hash: make duplicated code into functions
  hash: add read and write concurrency support
  test: add tests in hash table perf test
  test: add test case for read write concurrency
  hash: add new API function to query the key count
Applied, thanks
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