diff options
Diffstat (limited to 'src/backend/access/transam/multixact.c')
| -rw-r--r-- | src/backend/access/transam/multixact.c | 57 |
1 files changed, 32 insertions, 25 deletions
diff --git a/src/backend/access/transam/multixact.c b/src/backend/access/transam/multixact.c index b8bedca04a4..a2ce617c8ce 100644 --- a/src/backend/access/transam/multixact.c +++ b/src/backend/access/transam/multixact.c @@ -1831,11 +1831,13 @@ MultiXactShmemInit(void) SimpleLruInit(MultiXactOffsetCtl, "MultiXactOffset", NUM_MULTIXACTOFFSET_BUFFERS, 0, MultiXactOffsetSLRULock, "pg_multixact/offsets", - LWTRANCHE_MULTIXACTOFFSET_BUFFER); + LWTRANCHE_MULTIXACTOFFSET_BUFFER, + SYNC_HANDLER_MULTIXACT_OFFSET); SimpleLruInit(MultiXactMemberCtl, "MultiXactMember", NUM_MULTIXACTMEMBER_BUFFERS, 0, MultiXactMemberSLRULock, "pg_multixact/members", - LWTRANCHE_MULTIXACTMEMBER_BUFFER); + LWTRANCHE_MULTIXACTMEMBER_BUFFER, + SYNC_HANDLER_MULTIXACT_MEMBER); /* Initialize our shared state struct */ MultiXactState = ShmemInitStruct("Shared MultiXact State", @@ -2101,19 +2103,6 @@ TrimMultiXact(void) } /* - * This must be called ONCE during postmaster or standalone-backend shutdown - */ -void -ShutdownMultiXact(void) -{ - /* Flush dirty MultiXact pages to disk */ - TRACE_POSTGRESQL_MULTIXACT_CHECKPOINT_START(false); - SimpleLruFlush(MultiXactOffsetCtl, false); - SimpleLruFlush(MultiXactMemberCtl, false); - TRACE_POSTGRESQL_MULTIXACT_CHECKPOINT_DONE(false); -} - -/* * Get the MultiXact data to save in a checkpoint record */ void @@ -2143,9 +2132,13 @@ CheckPointMultiXact(void) { TRACE_POSTGRESQL_MULTIXACT_CHECKPOINT_START(true); - /* Flush dirty MultiXact pages to disk */ - SimpleLruFlush(MultiXactOffsetCtl, true); - SimpleLruFlush(MultiXactMemberCtl, true); + /* + * Write dirty MultiXact pages to disk. This may result in sync requests + * queued for later handling by ProcessSyncRequests(), as part of the + * checkpoint. + */ + SimpleLruWriteAll(MultiXactOffsetCtl, true); + SimpleLruWriteAll(MultiXactMemberCtl, true); TRACE_POSTGRESQL_MULTIXACT_CHECKPOINT_DONE(true); } @@ -2728,14 +2721,10 @@ find_multixact_start(MultiXactId multi, MultiXactOffset *result) entryno = MultiXactIdToOffsetEntry(multi); /* - * Flush out dirty data, so PhysicalPageExists can work correctly. - * SimpleLruFlush() is a pretty big hammer for that. Alternatively we - * could add an in-memory version of page exists, but find_multixact_start - * is called infrequently, and it doesn't seem bad to flush buffers to - * disk before truncation. + * Write out dirty data, so PhysicalPageExists can work correctly. */ - SimpleLruFlush(MultiXactOffsetCtl, true); - SimpleLruFlush(MultiXactMemberCtl, true); + SimpleLruWriteAll(MultiXactOffsetCtl, true); + SimpleLruWriteAll(MultiXactMemberCtl, true); if (!SimpleLruDoesPhysicalPageExist(MultiXactOffsetCtl, pageno)) return false; @@ -3386,3 +3375,21 @@ pg_get_multixact_members(PG_FUNCTION_ARGS) SRF_RETURN_DONE(funccxt); } + +/* + * Entrypoint for sync.c to sync offsets files. + */ +int +multixactoffsetssyncfiletag(const FileTag *ftag, char *path) +{ + return SlruSyncFileTag(MultiXactOffsetCtl, ftag, path); +} + +/* + * Entrypoint for sync.c to sync members files. + */ +int +multixactmemberssyncfiletag(const FileTag *ftag, char *path) +{ + return SlruSyncFileTag(MultiXactMemberCtl, ftag, path); +} |