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 (3): hash: add read and write concurrency support test: add test case for read write concurrency hash: add new API function to query the key count lib/librte_hash/rte_cuckoo_hash.c | 658 +++++++++++++++++++++------------- lib/librte_hash/rte_cuckoo_hash.h | 16 +- lib/librte_hash/rte_cuckoo_hash_x86.h | 164 --------- lib/librte_hash/rte_hash.h | 14 + lib/librte_hash/rte_hash_version.map | 8 + test/test/Makefile | 1 + test/test/test_hash.c | 12 + test/test/test_hash_multiwriter.c | 9 + test/test/test_hash_perf.c | 36 +- test/test/test_hash_readwrite.c | 649 +++++++++++++++++++++++++++++++++ 10 files changed, 1135 insertions(+), 432 deletions(-) delete mode 100644 lib/librte_hash/rte_cuckoo_hash_x86.h create mode 100644 test/test/test_hash_readwrite.c -- 2.7.4
