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| author | Andres Freund <andres@anarazel.de> | 2022-03-10 12:54:54 -0800 |
|---|---|---|
| committer | Andres Freund <andres@anarazel.de> | 2022-03-10 12:57:05 -0800 |
| commit | 352d297dc74feb0bf0dcb255cc0dfaaed2b96c1e (patch) | |
| tree | d8ac19ac9cd2a768605919bec4df52c8b133321c /src/backend/access/transam/xloginsert.c | |
| parent | adb5c28adc59415b54c087507dd84c71368c289c (diff) | |
| download | postgresql-352d297dc74feb0bf0dcb255cc0dfaaed2b96c1e.tar.gz postgresql-352d297dc74feb0bf0dcb255cc0dfaaed2b96c1e.zip | |
dshash: Add sequential scan support.
Add ability to scan all entries sequentially to dshash. The interface is
similar but a bit different both from that of dynahash and simple dshash
search functions. The most significant differences is that dshash's interfac
always needs a call to dshash_seq_term when scan ends. Another is
locking. Dshash holds partition lock when returning an entry,
dshash_seq_next() also holds lock when returning an entry but callers
shouldn't release it, since the lock is essential to continue a scan. The
seqscan interface allows entry deletion while a scan is in progress using
dshash_delete_current().
Reviewed-By: Andres Freund <andres@anarazel.de>
Author: Kyotaro Horiguchi <horikyoga.ntt@gmail.com>
Diffstat (limited to 'src/backend/access/transam/xloginsert.c')
0 files changed, 0 insertions, 0 deletions