Extend & revamp pg_bswap.h infrastructure. Upcoming patches are going to address performance issues that involve slow system provided ntohs/htons etc. To address that expand pg_bswap.h to provide pg_ntoh{16,32,64}, pg_hton{16,32,64} and optimize their respective implementations by using compiler intrinsics for gcc compatible compilers and msvc. Fall back to manual implementations using shifts etc otherwise.
Additionally remove multiple evaluation hazards from the existing BSWAP32/64 macros, by replacing them with inline functions when necessary. In the course of that the naming scheme is changed to pg_bswap16/32/64. Author: Andres Freund Discussion: https://postgr.es/m/20170927172019.gheidqy6xvlxb...@alap3.anarazel.de Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/510b8cbff15fcece246f66f2273ccf830a6c7e98 Modified Files -------------- config/c-compiler.m4 | 17 ++++++ configure | 24 ++++++++ configure.in | 1 + contrib/btree_gist/btree_uuid.c | 4 +- src/include/pg_config.h.in | 3 + src/include/pg_config.h.win32 | 3 + src/include/port/pg_bswap.h | 132 ++++++++++++++++++++++++++++++++-------- src/include/port/pg_crc32c.h | 2 +- 8 files changed, 159 insertions(+), 27 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers