Adding upstream version 16.2.upstream/16.2

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

1 files changed, 62 insertions, 0 deletions

diff --git a/src/include/access/hio.h b/src/include/access/hio.h
new file mode 100644
index 0000000..9bc563b
--- /dev/null
+++ b/src/include/access/hio.h
@@ -0,0 +1,62 @@
+/*-------------------------------------------------------------------------
+ *
+ * hio.h
+ *	  POSTGRES heap access method input/output definitions.
+ *
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/access/hio.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef HIO_H
+#define HIO_H
+
+#include "access/htup.h"
+#include "storage/buf.h"
+#include "utils/relcache.h"
+
+/*
+ * state for bulk inserts --- private to heapam.c and hio.c
+ *
+ * If current_buf isn't InvalidBuffer, then we are holding an extra pin
+ * on that buffer.
+ *
+ * "typedef struct BulkInsertStateData *BulkInsertState" is in heapam.h
+ */
+typedef struct BulkInsertStateData
+{
+	BufferAccessStrategy strategy;	/* our BULKWRITE strategy object */
+	Buffer		current_buf;	/* current insertion target page */
+
+	/*
+	 * State for bulk extensions.
+	 *
+	 * last_free..next_free are further pages that were unused at the time of
+	 * the last extension. They might be in use by the time we use them
+	 * though, so rechecks are needed.
+	 *
+	 * XXX: Eventually these should probably live in RelationData instead,
+	 * alongside targetblock.
+	 *
+	 * already_extended_by is the number of pages that this bulk inserted
+	 * extended by. If we already extended by a significant number of pages,
+	 * we can be more aggressive about extending going forward.
+	 */
+	BlockNumber next_free;
+	BlockNumber last_free;
+	uint32		already_extended_by;
+} BulkInsertStateData;
+
+
+extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
+								 HeapTuple tuple, bool token);
+extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
+										Buffer otherBuffer, int options,
+										BulkInsertStateData *bistate,
+										Buffer *vmbuffer, Buffer *vmbuffer_other,
+										int num_pages);
+
+#endif							/* HIO_H */