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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
commit46651ce6fe013220ed397add242004d764fc0153 (patch)
tree6e5299f990f88e60174a1d3ae6e48eedd2688b2b /src/backend/access/rmgrdesc/genericdesc.c
parentInitial commit. (diff)
downloadpostgresql-14-upstream.tar.xz
postgresql-14-upstream.zip
Adding upstream version 14.5.upstream/14.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/backend/access/rmgrdesc/genericdesc.c')
-rw-r--r--src/backend/access/rmgrdesc/genericdesc.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/src/backend/access/rmgrdesc/genericdesc.c b/src/backend/access/rmgrdesc/genericdesc.c
new file mode 100644
index 0000000..7242d0d
--- /dev/null
+++ b/src/backend/access/rmgrdesc/genericdesc.c
@@ -0,0 +1,56 @@
+/*-------------------------------------------------------------------------
+ *
+ * genericdesc.c
+ * rmgr descriptor routines for access/transam/generic_xlog.c
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/backend/access/rmgrdesc/genericdesc.c
+ *
+ *-------------------------------------------------------------------------
+ */
+#include "postgres.h"
+
+#include "access/generic_xlog.h"
+#include "lib/stringinfo.h"
+#include "storage/relfilenode.h"
+
+/*
+ * Description of generic xlog record: write page regions that this record
+ * overrides.
+ */
+void
+generic_desc(StringInfo buf, XLogReaderState *record)
+{
+ Pointer ptr = XLogRecGetData(record),
+ end = ptr + XLogRecGetDataLen(record);
+
+ while (ptr < end)
+ {
+ OffsetNumber offset,
+ length;
+
+ memcpy(&offset, ptr, sizeof(offset));
+ ptr += sizeof(offset);
+ memcpy(&length, ptr, sizeof(length));
+ ptr += sizeof(length);
+ ptr += length;
+
+ if (ptr < end)
+ appendStringInfo(buf, "offset %u, length %u; ", offset, length);
+ else
+ appendStringInfo(buf, "offset %u, length %u", offset, length);
+ }
+}
+
+/*
+ * Identification of generic xlog record: we don't distinguish any subtypes
+ * inside generic xlog records.
+ */
+const char *
+generic_identify(uint8 info)
+{
+ return "Generic";
+}