1 files changed, 29 insertions, 0 deletions
diff --git a/src/bin/pg_rewind/datapagemap.h b/src/bin/pg_rewind/datapagemap.h
new file mode 100644
index 0000000..76e9f20
--- /dev/null
+++ b/src/bin/pg_rewind/datapagemap.h
@@ -0,0 +1,29 @@
+/*-------------------------------------------------------------------------
+ *
+ * datapagemap.h
+ *
+ * Copyright (c) 2013-2021, PostgreSQL Global Development Group
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef DATAPAGEMAP_H
+#define DATAPAGEMAP_H
+
+#include "storage/block.h"
+#include "storage/relfilenode.h"
+
+struct datapagemap
+{
+	char	   *bitmap;
+	int			bitmapsize;
+};
+
+typedef struct datapagemap datapagemap_t;
+typedef struct datapagemap_iterator datapagemap_iterator_t;
+
+extern void datapagemap_add(datapagemap_t *map, BlockNumber blkno);
+extern datapagemap_iterator_t *datapagemap_iterate(datapagemap_t *map);
+extern bool datapagemap_next(datapagemap_iterator_t *iter, BlockNumber *blkno);
+extern void datapagemap_print(datapagemap_t *map);
+
+#endif							/* DATAPAGEMAP_H */