diff options
Diffstat (limited to 'src/include/storage/sinval.h')
| -rw-r--r-- | src/include/storage/sinval.h | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/src/include/storage/sinval.h b/src/include/storage/sinval.h index 2463c0f9fac..5dc5aafe5c9 100644 --- a/src/include/storage/sinval.h +++ b/src/include/storage/sinval.h @@ -27,6 +27,7 @@ * * invalidate an smgr cache entry for a specific physical relation * * invalidate the mapped-relation mapping for a given database * * invalidate any saved snapshot that might be used to scan a given relation + * * invalidate a RelationSyncCache entry for a specific relation * More types could be added if needed. The message type is identified by * the first "int8" field of the message struct. Zero or positive means a * specific-catcache inval message (and also serves as the catcache ID field). @@ -46,12 +47,12 @@ * catcache inval messages must be generated for each of its caches, since * the hash keys will generally be different. * - * Catcache, relcache, and snapshot invalidations are transactional, and so - * are sent to other backends upon commit. Internally to the generating - * backend, they are also processed at CommandCounterIncrement so that later - * commands in the same transaction see the new state. The generating backend - * also has to process them at abort, to flush out any cache state it's loaded - * from no-longer-valid entries. + * Catcache, relcache, relsynccache, and snapshot invalidations are + * transactional, and so are sent to other backends upon commit. Internally + * to the generating backend, they are also processed at + * CommandCounterIncrement so that later commands in the same transaction see + * the new state. The generating backend also has to process them at abort, + * to flush out any cache state it's loaded from no-longer-valid entries. * * smgr and relation mapping invalidations are non-transactional: they are * sent immediately when the underlying file change is made. @@ -110,6 +111,16 @@ typedef struct Oid relId; /* relation ID */ } SharedInvalSnapshotMsg; +#define SHAREDINVALRELSYNC_ID (-6) + +typedef struct +{ + int8 id; /* type field --- must be first */ + Oid dbId; /* database ID */ + Oid relid; /* relation ID, or 0 if whole + * RelationSyncCache */ +} SharedInvalRelSyncMsg; + typedef union { int8 id; /* type field --- must be first */ @@ -119,6 +130,7 @@ typedef union SharedInvalSmgrMsg sm; SharedInvalRelmapMsg rm; SharedInvalSnapshotMsg sn; + SharedInvalRelSyncMsg rs; } SharedInvalidationMessage; |