Add new files for syncrep missed in previous commit

src/include/replication/syncrep.h

+/*-------------------------------------------------------------------------
+ *
+ * syncrep.h
+ *	  Exports from replication/syncrep.c.
+ *
+ * Portions Copyright (c) 2010-2010, PostgreSQL Global Development Group
+ *
+ * $PostgreSQL$
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _SYNCREP_H
+#define _SYNCREP_H
+
+#include "access/xlog.h"
+#include "storage/proc.h"
+#include "storage/shmem.h"
+#include "storage/spin.h"
+#include "utils/guc.h"
+
+#define SyncRepRequested()				(sync_rep_mode)
+
+/* syncRepState */
+#define SYNC_REP_NOT_WAITING		0
+#define SYNC_REP_WAITING			1
+#define SYNC_REP_WAIT_COMPLETE		2
+#define SYNC_REP_MUST_DISCONNECT	3
+
+/* user-settable parameters for synchronous replication */
+extern bool sync_rep_mode;
+extern int 	sync_rep_timeout;
+extern char *SyncRepStandbyNames;
+
+/* called by user backend */
+extern void SyncRepWaitForLSN(XLogRecPtr XactCommitLSN);
+
+/* callback at backend exit */
+extern void SyncRepCleanupAtProcExit(int code, Datum arg);
+
+/* called by wal sender */
+extern void SyncRepInitConfig(void);
+extern void SyncRepReleaseWaiters(void);
+
+/* called by various procs */
+extern int SyncRepWakeQueue(bool all);
+const char *assign_synchronous_standby_names(const char *newval, bool doit, GucSource source);
+
+#endif   /* _SYNCREP_H */