Refactor headers to split out standby defs

Jeff Janes

Author: simonat2ndQuadrant

src/backend/access/rmgrdesc/standbydesc.c

@@ -14,7 +14,7 @@
  */
 #include "postgres.h"
 
-#include "storage/standby.h"
+#include "storage/standbydefs.h"
 
 static void
 standby_desc_running_xacts(StringInfo buf, xl_running_xacts *xlrec)

src/bin/pg_xlogdump/rmgrdesc.c

@@ -27,7 +27,7 @@
 #include "commands/tablespace.h"
 #include "replication/origin.h"
 #include "rmgrdesc.h"
-#include "storage/standby.h"
+#include "storage/standbydefs.h"
 #include "utils/relmapper.h"
 
 #define PG_RMGR(symname,name,redo,desc,identify,startup,cleanup) \

src/include/storage/standby.h

@@ -14,9 +14,7 @@
 #ifndef STANDBY_H
 #define STANDBY_H
 
-#include "access/xlogreader.h"
-#include "lib/stringinfo.h"
-#include "storage/lockdefs.h"
+#include "storage/standbydefs.h"
 #include "storage/procsignal.h"
 #include "storage/relfilenode.h"
 
@@ -51,41 +49,9 @@ extern void StandbyReleaseLockTree(TransactionId xid,
 extern void StandbyReleaseAllLocks(void);
 extern void StandbyReleaseOldLocks(int nxids, TransactionId *xids);
 
-/*
- * XLOG message types
- */
-#define XLOG_STANDBY_LOCK			0x00
-#define XLOG_RUNNING_XACTS			0x10
-
-typedef struct xl_standby_locks
-{
-	int			nlocks;			/* number of entries in locks array */
-	xl_standby_lock locks[FLEXIBLE_ARRAY_MEMBER];
-} xl_standby_locks;
-
-/*
- * When we write running xact data to WAL, we use this structure.
- */
-typedef struct xl_running_xacts
-{
-	int			xcnt;			/* # of xact ids in xids[] */
-	int			subxcnt;		/* # of subxact ids in xids[] */
-	bool		subxid_overflow;	/* snapshot overflowed, subxids missing */
-	TransactionId nextXid;		/* copy of ShmemVariableCache->nextXid */
-	TransactionId oldestRunningXid;		/* *not* oldestXmin */
-	TransactionId latestCompletedXid;	/* so we can set xmax */
-
-	TransactionId xids[FLEXIBLE_ARRAY_MEMBER];
-} xl_running_xacts;
-
 #define MinSizeOfXactRunningXacts offsetof(xl_running_xacts, xids)
 
 
-/* Recovery handlers for the Standby Rmgr (RM_STANDBY_ID) */
-extern void standby_redo(XLogReaderState *record);
-extern void standby_desc(StringInfo buf, XLogReaderState *record);
-extern const char *standby_identify(uint8 info);
-
 /*
  * Declarations for GetRunningTransactionData(). Similar to Snapshots, but
  * not quite. This has nothing at all to do with visibility on this server,

src/include/storage/standbydefs.h

@@ -0,0 +1,53 @@
+/*-------------------------------------------------------------------------
+ *
+ * standbydef.h
+ *	   Frontend exposed definitions for hot standby mode.
+ *
+ *
+ * Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/storage/standbydefs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef STANDBYDEFS_H
+#define STANDBYDEFS_H
+
+#include "access/xlogreader.h"
+#include "lib/stringinfo.h"
+#include "storage/lockdefs.h"
+
+/* Recovery handlers for the Standby Rmgr (RM_STANDBY_ID) */
+extern void standby_redo(XLogReaderState *record);
+extern void standby_desc(StringInfo buf, XLogReaderState *record);
+extern const char *standby_identify(uint8 info);
+
+/*
+ * XLOG message types
+ */
+#define XLOG_STANDBY_LOCK			0x00
+#define XLOG_RUNNING_XACTS			0x10
+
+typedef struct xl_standby_locks
+{
+	int			nlocks;			/* number of entries in locks array */
+	xl_standby_lock locks[FLEXIBLE_ARRAY_MEMBER];
+} xl_standby_locks;
+
+/*
+ * When we write running xact data to WAL, we use this structure.
+ */
+typedef struct xl_running_xacts
+{
+	int			xcnt;			/* # of xact ids in xids[] */
+	int			subxcnt;		/* # of subxact ids in xids[] */
+	bool		subxid_overflow;	/* snapshot overflowed, subxids missing */
+	TransactionId nextXid;		/* copy of ShmemVariableCache->nextXid */
+	TransactionId oldestRunningXid;		/* *not* oldestXmin */
+	TransactionId latestCompletedXid;	/* so we can set xmax */
+
+	TransactionId xids[FLEXIBLE_ARRAY_MEMBER];
+} xl_running_xacts;
+
+#endif   /* STANDBYDEFS_H */