init

db_include/catalog/storage_xlog.h

@@ -0,0 +1,59 @@
+/*-------------------------------------------------------------------------
+ *
+ * storage_xlog.h
+ *	  prototypes for XLog support for backend/catalog/storage.c
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/catalog/storage_xlog.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef STORAGE_XLOG_H
+#define STORAGE_XLOG_H
+
+#include "access/xlogreader.h"
+#include "lib/stringinfo.h"
+#include "storage/block.h"
+#include "storage/relfilenode.h"
+
+/*
+ * Declarations for smgr-related XLOG records
+ *
+ * Note: we log file creation and truncation here, but logging of deletion
+ * actions is handled by xact.c, because it is part of transaction commit.
+ */
+
+/* XLOG gives us high 4 bits */
+#define XLOG_SMGR_CREATE	0x10
+#define XLOG_SMGR_TRUNCATE	0x20
+
+typedef struct xl_smgr_create
+{
+	RelFileNode rnode;
+	ForkNumber	forkNum;
+} xl_smgr_create;
+
+/* flags for xl_smgr_truncate */
+#define SMGR_TRUNCATE_HEAP		0x0001
+#define SMGR_TRUNCATE_VM		0x0002
+#define SMGR_TRUNCATE_FSM		0x0004
+#define SMGR_TRUNCATE_ALL		\
+	(SMGR_TRUNCATE_HEAP|SMGR_TRUNCATE_VM|SMGR_TRUNCATE_FSM)
+
+typedef struct xl_smgr_truncate
+{
+	BlockNumber blkno;
+	RelFileNode rnode;
+	int			flags;
+} xl_smgr_truncate;
+
+extern void log_smgrcreate(const RelFileNode *rnode, ForkNumber forkNum);
+
+extern void smgr_redo(XLogReaderState *record);
+extern void smgr_desc(StringInfo buf, XLogReaderState *record);
+extern const char *smgr_identify(uint8 info);
+
+#endif							/* STORAGE_XLOG_H */