XLOG file archiving and point-in-time recovery. There are still some

loose ends and a glaring lack of documentation, but it basically works.

Simon Riggs with some editorialization by Tom Lane.

3 files changed, 32 insertions, 2 deletions

diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h
index 1c29ab07626..630a62d77a9 100644
--- a/src/include/access/xlog.h
+++ b/src/include/access/xlog.h
@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.52 2004/07/01 00:51:38 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.53 2004/07/19 02:47:13 tgl Exp $
  */
 #ifndef XLOG_H
 #define XLOG_H
@@ -208,9 +208,12 @@ extern XLogRecPtr ProcLastRecEnd;
 /* these variables are GUC parameters related to XLOG */
 extern int	CheckPointSegments;
 extern int	XLOGbuffers;
+extern char *XLogArchiveCommand;
 extern char *XLOG_sync_method;
 extern const char XLOG_sync_method_default[];
 
+#define XLogArchivingActive()	(XLogArchiveCommand[0] != '\0')
+
 #ifdef WAL_DEBUG
 extern bool	XLOG_DEBUG;
 #endif
diff --git a/src/include/postmaster/pgarch.h b/src/include/postmaster/pgarch.h
new file mode 100644
index 00000000000..0ce9e15781d
--- /dev/null
+++ b/src/include/postmaster/pgarch.h
@@ -0,0 +1,26 @@
+/*-------------------------------------------------------------------------
+ *
+ * pgarch.h
+ *	  Exports from postmaster/pgarch.c.
+ *
+ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * $PostgreSQL: pgsql/src/include/postmaster/pgarch.h,v 1.1 2004/07/19 02:47:16 tgl Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _PGARCH_H
+#define _PGARCH_H
+
+/* ----------
+ * Functions called from postmaster
+ * ----------
+ */
+extern int	pgarch_start(void);
+
+#ifdef EXEC_BACKEND
+extern void PgArchiverMain(int argc, char *argv[]);
+#endif
+
+#endif   /* _PGARCH_H */
diff --git a/src/include/storage/pmsignal.h b/src/include/storage/pmsignal.h
index 4180c95c735..808e5013c0c 100644
--- a/src/include/storage/pmsignal.h
+++ b/src/include/storage/pmsignal.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/storage/pmsignal.h,v 1.8 2004/05/29 22:48:23 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/storage/pmsignal.h,v 1.9 2004/07/19 02:47:15 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -24,6 +24,7 @@ typedef enum
 {
 	PMSIGNAL_PASSWORD_CHANGE,	/* pg_pwd file has changed */
 	PMSIGNAL_WAKEN_CHILDREN,	/* send a SIGUSR1 signal to all backends */
+	PMSIGNAL_WAKEN_ARCHIVER,	/* send a NOTIFY signal to xlog archiver */
 
 	NUM_PMSIGNALS				/* Must be last value of enum! */
 } PMSignalReason;