1 files changed, 109 insertions, 0 deletions
diff --git a/src/include/access/brin_xlog.h b/src/include/access/brin_xlog.h
new file mode 100644
index 00000000000..3d959e81d63
--- /dev/null
+++ b/src/include/access/brin_xlog.h
@@ -0,0 +1,109 @@
+/*-------------------------------------------------------------------------
+ *
+ * brin_xlog.h
+ *	  POSTGRES BRIN access XLOG definitions.
+ *
+ *
+ * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/access/brin_xlog.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef BRIN_XLOG_H
+#define BRIN_XLOG_H
+
+#include "access/xlogrecord.h"
+#include "lib/stringinfo.h"
+#include "storage/bufpage.h"
+#include "storage/itemptr.h"
+#include "storage/relfilenode.h"
+#include "utils/relcache.h"
+
+
+/*
+ * WAL record definitions for BRIN's WAL operations
+ *
+ * XLOG allows to store some information in high 4 bits of log
+ * record xl_info field.
+ */
+#define XLOG_BRIN_CREATE_INDEX		0x00
+#define XLOG_BRIN_INSERT			0x10
+#define XLOG_BRIN_UPDATE			0x20
+#define XLOG_BRIN_SAMEPAGE_UPDATE	0x30
+#define XLOG_BRIN_REVMAP_EXTEND		0x40
+#define XLOG_BRIN_REVMAP_VACUUM		0x50
+
+#define XLOG_BRIN_OPMASK			0x70
+/*
+ * When we insert the first item on a new page, we restore the entire page in
+ * redo.
+ */
+#define XLOG_BRIN_INIT_PAGE		0x80
+
+/* This is what we need to know about a BRIN index create */
+typedef struct xl_brin_createidx
+{
+	BlockNumber pagesPerRange;
+	RelFileNode node;
+	uint16		version;
+} xl_brin_createidx;
+#define SizeOfBrinCreateIdx (offsetof(xl_brin_createidx, version) + sizeof(uint16))
+
+/*
+ * This is what we need to know about a BRIN tuple insert
+ */
+typedef struct xl_brin_insert
+{
+	RelFileNode node;
+	BlockNumber heapBlk;
+
+	/* extra information needed to update the revmap */
+	BlockNumber revmapBlk;
+	BlockNumber pagesPerRange;
+
+	uint16		tuplen;
+	ItemPointerData tid;
+	/* tuple data follows at end of struct */
+} xl_brin_insert;
+
+#define SizeOfBrinInsert	(offsetof(xl_brin_insert, tid) + sizeof(ItemPointerData))
+
+/*
+ * A cross-page update is the same as an insert, but also store the old tid.
+ */
+typedef struct xl_brin_update
+{
+	ItemPointerData oldtid;
+	xl_brin_insert new;
+} xl_brin_update;
+
+#define SizeOfBrinUpdate	(offsetof(xl_brin_update, new) + SizeOfBrinInsert)
+
+/* This is what we need to know about a BRIN tuple samepage update */
+typedef struct xl_brin_samepage_update
+{
+	RelFileNode node;
+	ItemPointerData tid;
+	/* tuple data follows at end of struct */
+} xl_brin_samepage_update;
+
+#define SizeOfBrinSamepageUpdate		(offsetof(xl_brin_samepage_update, tid) + sizeof(ItemPointerData))
+
+/* This is what we need to know about a revmap extension */
+typedef struct xl_brin_revmap_extend
+{
+	RelFileNode node;
+	BlockNumber targetBlk;
+} xl_brin_revmap_extend;
+
+#define SizeOfBrinRevmapExtend	(offsetof(xl_brin_revmap_extend, targetBlk) + \
+								 sizeof(BlockNumber))
+
+
+extern void brin_desc(StringInfo buf, XLogRecord *record);
+extern void brin_redo(XLogRecPtr lsn, XLogRecord *record);
+extern const char *brin_identify(uint8 info);
+
+#endif   /* BRIN_XLOG_H */