diff options
| author | Thomas Munro <tmunro@postgresql.org> | 2020-04-08 13:36:45 +1200 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2020-04-08 14:56:57 +1200 |
| commit | 3985b600f57d75b9743d86430cb5c21370057a23 (patch) | |
| tree | f367f4511386eeacf127a8e8b25afc9f8ea46101 /src/include/storage/buf_internals.h | |
| parent | 981643dcdb70b6ce70d8a08417f71f465f236cb5 (diff) | |
Support PrefetchBuffer() in recovery.
Provide PrefetchSharedBuffer(), a variant that takes SMgrRelation, for
use in recovery. Rename LocalPrefetchBuffer() to PrefetchLocalBuffer()
for consistency.
Add a return value to all of these. In recovery, tolerate and report
missing files, so we can handle relations unlinked before crash recovery
began. Also report cache hits and misses, so that callers can do faster
buffer lookups and better I/O accounting.
Reviewed-by: Alvaro Herrera <alvherre@2ndquadrant.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA%2BhUKGJ4VJN8ttxScUFM8dOKX0BrBiboo5uz1cq%3DAovOddfHpA%40mail.gmail.com
Diffstat (limited to 'src/include/storage/buf_internals.h')
| -rw-r--r-- | src/include/storage/buf_internals.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/include/storage/buf_internals.h b/src/include/storage/buf_internals.h index bf3b8ad340e..e57f84ee9c8 100644 --- a/src/include/storage/buf_internals.h +++ b/src/include/storage/buf_internals.h @@ -327,8 +327,9 @@ extern int BufTableInsert(BufferTag *tagPtr, uint32 hashcode, int buf_id); extern void BufTableDelete(BufferTag *tagPtr, uint32 hashcode); /* localbuf.c */ -extern void LocalPrefetchBuffer(SMgrRelation smgr, ForkNumber forkNum, - BlockNumber blockNum); +extern PrefetchBufferResult PrefetchLocalBuffer(SMgrRelation smgr, + ForkNumber forkNum, + BlockNumber blockNum); extern BufferDesc *LocalBufferAlloc(SMgrRelation smgr, ForkNumber forkNum, BlockNumber blockNum, bool *foundPtr); extern void MarkLocalBufferDirty(Buffer buffer); |