Adding upstream version 14.5.upstream/14.5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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..14148bf
--- /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) 1996-2021, 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 */