1 files changed, 43 insertions, 0 deletions
diff --git a/src/include/access/xlogstats.h b/src/include/access/xlogstats.h
new file mode 100644
index 0000000..7eb4370
--- /dev/null
+++ b/src/include/access/xlogstats.h
@@ -0,0 +1,43 @@
+/*-------------------------------------------------------------------------
+ *
+ * xlogstats.h
+ *		Definitions for WAL Statitstics
+ *
+ * Copyright (c) 2022, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *		src/include/access/xlogstats.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef XLOGSTATS_H
+#define XLOGSTATS_H
+
+#include "access/rmgr.h"
+#include "access/xlogreader.h"
+
+#define MAX_XLINFO_TYPES 16
+
+typedef struct XLogRecStats
+{
+	uint64		count;
+	uint64		rec_len;
+	uint64		fpi_len;
+} XLogRecStats;
+
+typedef struct XLogStats
+{
+	uint64		count;
+#ifdef FRONTEND
+	XLogRecPtr	startptr;
+	XLogRecPtr	endptr;
+#endif
+	XLogRecStats rmgr_stats[RM_MAX_ID + 1];
+	XLogRecStats record_stats[RM_MAX_ID + 1][MAX_XLINFO_TYPES];
+} XLogStats;
+
+extern void XLogRecGetLen(XLogReaderState *record, uint32 *rec_len,
+						  uint32 *fpi_len);
+extern void XLogRecStoreStats(XLogStats *stats, XLogReaderState *record);
+
+#endif							/* XLOGSTATS_H */