diff options
| author | Thomas Munro | 2020-04-06 23:08:14 +0000 |
|---|---|---|
| committer | Thomas Munro | 2020-04-07 00:03:59 +0000 |
| commit | aeec457de8a8820368e343e791accffe24dc7198 (patch) | |
| tree | 1e95e2de03595a459bc26717cf4a3bb22163fb83 /src/include/access | |
| parent | 4bea576b032d6e5435ef0946194aada314e67691 (diff) | |
Add SQL type xid8 to expose FullTransactionId to users.
Similar to xid, but 64 bits wide. This new type is suitable for use in
various system views and administration functions.
Reviewed-by: Fujii Masao <masao.fujii@oss.nttdata.com>
Reviewed-by: Takao Fujii <btfujiitkp@oss.nttdata.com>
Reviewed-by: Yoshikazu Imai <imai.yoshikazu@fujitsu.com>
Reviewed-by: Mark Dilger <mark.dilger@enterprisedb.com>
Discussion: https://postgr.es/m/20190725000636.666m5mad25wfbrri%40alap3.anarazel.de
Diffstat (limited to 'src/include/access')
| -rw-r--r-- | src/include/access/transam.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/include/access/transam.h b/src/include/access/transam.h index 6a947b958b0..9a808f64ebe 100644 --- a/src/include/access/transam.h +++ b/src/include/access/transam.h @@ -47,7 +47,11 @@ #define EpochFromFullTransactionId(x) ((uint32) ((x).value >> 32)) #define XidFromFullTransactionId(x) ((uint32) (x).value) #define U64FromFullTransactionId(x) ((x).value) +#define FullTransactionIdEquals(a, b) ((a).value == (b).value) #define FullTransactionIdPrecedes(a, b) ((a).value < (b).value) +#define FullTransactionIdPrecedesOrEquals(a, b) ((a).value <= (b).value) +#define FullTransactionIdFollows(a, b) ((a).value > (b).value) +#define FullTransactionIdFollowsOrEquals(a, b) ((a).value >= (b).value) #define FullTransactionIdIsValid(x) TransactionIdIsValid(XidFromFullTransactionId(x)) #define InvalidFullTransactionId FullTransactionIdFromEpochAndXid(0, InvalidTransactionId) @@ -71,6 +75,16 @@ FullTransactionIdFromEpochAndXid(uint32 epoch, TransactionId xid) return result; } +static inline FullTransactionId +FullTransactionIdFromU64(uint64 value) +{ + FullTransactionId result; + + result.value = value; + + return result; +} + /* advance a transaction ID variable, handling wraparound correctly */ #define TransactionIdAdvance(dest) \ do { \ |