Split out rmgr rm_desc functions into their own files

This is necessary (but not sufficient) to have them compilable outside
of a backend environment.

1 files changed, 68 insertions, 0 deletions

diff --git a/src/backend/access/rmgrdesc/gistdesc.c b/src/backend/access/rmgrdesc/gistdesc.c
new file mode 100644
index 00000000000..1f47c6b8bbb
--- /dev/null
+++ b/src/backend/access/rmgrdesc/gistdesc.c
@@ -0,0 +1,68 @@
+/*-------------------------------------------------------------------------
+ *
+ * gistdesc.c
+ *    rmgr descriptor routines for access/gist/gistxlog.c
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *    src/backend/access/rmgrdesc/gistdesc.c
+ *
+ *-------------------------------------------------------------------------
+ */
+#include "postgres.h"
+
+#include "access/gist_private.h"
+#include "lib/stringinfo.h"
+#include "storage/relfilenode.h"
+
+static void
+out_target(StringInfo buf, RelFileNode node)
+{
+	appendStringInfo(buf, "rel %u/%u/%u",
+					 node.spcNode, node.dbNode, node.relNode);
+}
+
+static void
+out_gistxlogPageUpdate(StringInfo buf, gistxlogPageUpdate *xlrec)
+{
+	out_target(buf, xlrec->node);
+	appendStringInfo(buf, "; block number %u", xlrec->blkno);
+}
+
+static void
+out_gistxlogPageSplit(StringInfo buf, gistxlogPageSplit *xlrec)
+{
+	appendStringInfo(buf, "page_split: ");
+	out_target(buf, xlrec->node);
+	appendStringInfo(buf, "; block number %u splits to %d pages",
+					 xlrec->origblkno, xlrec->npage);
+}
+
+void
+gist_desc(StringInfo buf, uint8 xl_info, char *rec)
+{
+	uint8		info = xl_info & ~XLR_INFO_MASK;
+
+	switch (info)
+	{
+		case XLOG_GIST_PAGE_UPDATE:
+			appendStringInfo(buf, "page_update: ");
+			out_gistxlogPageUpdate(buf, (gistxlogPageUpdate *) rec);
+			break;
+		case XLOG_GIST_PAGE_SPLIT:
+			out_gistxlogPageSplit(buf, (gistxlogPageSplit *) rec);
+			break;
+		case XLOG_GIST_CREATE_INDEX:
+			appendStringInfo(buf, "create_index: rel %u/%u/%u",
+							 ((RelFileNode *) rec)->spcNode,
+							 ((RelFileNode *) rec)->dbNode,
+							 ((RelFileNode *) rec)->relNode);
+			break;
+		default:
+			appendStringInfo(buf, "unknown gist op code %u", info);
+			break;
+	}
+}