diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
commit | 6eb9c5a5657d1fe77b55cc261450f3538d35a94d (patch) | |
tree | 657d8194422a5daccecfd42d654b8a245ef7b4c8 /src/include/storage/sinvaladt.h | |
parent | Initial commit. (diff) | |
download | postgresql-13-upstream.tar.xz postgresql-13-upstream.zip |
Adding upstream version 13.4.upstream/13.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/storage/sinvaladt.h')
-rw-r--r-- | src/include/storage/sinvaladt.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/include/storage/sinvaladt.h b/src/include/storage/sinvaladt.h new file mode 100644 index 0000000..426f547 --- /dev/null +++ b/src/include/storage/sinvaladt.h @@ -0,0 +1,43 @@ +/*------------------------------------------------------------------------- + * + * sinvaladt.h + * POSTGRES shared cache invalidation data manager. + * + * The shared cache invalidation manager is responsible for transmitting + * invalidation messages between backends. Any message sent by any backend + * must be delivered to all already-running backends before it can be + * forgotten. (If we run out of space, we instead deliver a "RESET" + * message to backends that have fallen too far behind.) + * + * The struct type SharedInvalidationMessage, defining the contents of + * a single message, is defined in sinval.h. + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/storage/sinvaladt.h + * + *------------------------------------------------------------------------- + */ +#ifndef SINVALADT_H +#define SINVALADT_H + +#include "storage/lock.h" +#include "storage/sinval.h" + +/* + * prototypes for functions in sinvaladt.c + */ +extern Size SInvalShmemSize(void); +extern void CreateSharedInvalidationState(void); +extern void SharedInvalBackendInit(bool sendOnly); +extern PGPROC *BackendIdGetProc(int backendID); +extern void BackendIdGetTransactionIds(int backendID, TransactionId *xid, TransactionId *xmin); + +extern void SIInsertDataEntries(const SharedInvalidationMessage *data, int n); +extern int SIGetDataEntries(SharedInvalidationMessage *data, int datasize); +extern void SICleanupQueue(bool callerHasWriteLock, int minFree); + +extern LocalTransactionId GetNextLocalTransactionId(void); + +#endif /* SINVALADT_H */ |