On Thu, Mar 28, 2019 at 2:27 PM Thomas Munro <tmu...@postgresql.org> wrote: > > Use FullTransactionId for the transaction stack. > > Provide GetTopFullTransactionId() and GetCurrentFullTransactionId(). > The intended users of these interfaces are access methods that use > xids for visibility checks but don't want to have to go back and > "freeze" existing references some time later before the 32 bit xid > counter wraps around. > > Use a new struct to serialize the transaction state for parallel > query, because FullTransactionId doesn't fit into the previous > serialization scheme very well. > > Author: Thomas Munro > Reviewed-by: Heikki Linnakangas > Discussion: > https://postgr.es/m/CAA4eK1%2BMv%2Bmb0HFfWM9Srtc6MVe160WFurXV68iAFMcagRZ0dQ%40mail.gmail.com > > Branch > ------ > master > > Details > ------- > https://git.postgresql.org/pg/commitdiff/ad308058cc8666c50b43179e64d6bb7aeb3ba169 > > Modified Files > -------------- > src/backend/access/transam/varsup.c | 13 +- > src/backend/access/transam/xact.c | 229 ++++++++++++++++++++++++------------ > src/include/access/transam.h | 3 +- > src/include/access/xact.h | 5 + > src/tools/pgindent/typedefs.list | 1 + > 5 files changed, 170 insertions(+), 81 deletions(-) >
/* + * Serialized representation used to transmit transaction state to parallel + * workers though shared memory. The second line of the above comment must be "workers *through* shared memory"? Attached the patch. Regards, -- Masahiko Sawada NIPPON TELEGRAPH AND TELEPHONE CORPORATION NTT Open Source Software Center
fix_typo.patch
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