1 files changed, 70 insertions, 0 deletions
diff --git a/src/include/utils/relmapper.h b/src/include/utils/relmapper.h
new file mode 100644
index 0000000..c0d14da
--- /dev/null
+++ b/src/include/utils/relmapper.h
@@ -0,0 +1,70 @@
+/*-------------------------------------------------------------------------
+ *
+ * relmapper.h
+ *	  Catalog-to-filenode mapping
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/utils/relmapper.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef RELMAPPER_H
+#define RELMAPPER_H
+
+#include "access/xlogreader.h"
+#include "lib/stringinfo.h"
+
+/* ----------------
+ *		relmap-related XLOG entries
+ * ----------------
+ */
+
+#define XLOG_RELMAP_UPDATE		0x00
+
+typedef struct xl_relmap_update
+{
+	Oid			dbid;			/* database ID, or 0 for shared map */
+	Oid			tsid;			/* database's tablespace, or pg_global */
+	int32		nbytes;			/* size of relmap data */
+	char		data[FLEXIBLE_ARRAY_MEMBER];
+} xl_relmap_update;
+
+#define MinSizeOfRelmapUpdate offsetof(xl_relmap_update, data)
+
+
+extern Oid	RelationMapOidToFilenode(Oid relationId, bool shared);
+
+extern Oid	RelationMapFilenodeToOid(Oid relationId, bool shared);
+
+extern void RelationMapUpdateMap(Oid relationId, Oid fileNode, bool shared,
+								 bool immediate);
+
+extern void RelationMapRemoveMapping(Oid relationId);
+
+extern void RelationMapInvalidate(bool shared);
+extern void RelationMapInvalidateAll(void);
+
+extern void AtCCI_RelationMap(void);
+extern void AtEOXact_RelationMap(bool isCommit, bool isParallelWorker);
+extern void AtPrepare_RelationMap(void);
+
+extern void CheckPointRelationMap(void);
+
+extern void RelationMapFinishBootstrap(void);
+
+extern void RelationMapInitialize(void);
+extern void RelationMapInitializePhase2(void);
+extern void RelationMapInitializePhase3(void);
+
+extern Size EstimateRelationMapSpace(void);
+extern void SerializeRelationMap(Size maxSize, char *startAddress);
+extern void RestoreRelationMap(char *startAddress);
+
+extern void relmap_redo(XLogReaderState *record);
+extern void relmap_desc(StringInfo buf, XLogReaderState *record);
+extern const char *relmap_identify(uint8 info);
+
+#endif							/* RELMAPPER_H */