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-rw-r--r--src/backend/storage/itempos.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/src/backend/storage/itempos.h b/src/backend/storage/itempos.h
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+/*-------------------------------------------------------------------------
+ *
+ * itempos.h--
+ * Standard POSTGRES buffer page long item subposition definitions.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: itempos.h,v 1.1.1.1 1996/07/09 06:21:53 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef ITEMPOS_H
+#define ITEMPOS_H
+
+#include "c.h"
+#include "storage/buf.h"
+#include "storage/itemid.h"
+
+typedef struct ItemSubpositionData {
+ Buffer op_db;
+ ItemId op_lpp;
+ char *op_cp; /* XXX */
+ uint32 op_len;
+} ItemSubpositionData;
+
+typedef ItemSubpositionData *ItemSubposition;
+
+/*
+ * PNOBREAK(OBJP, LEN)
+ * struct objpos *OBJP;
+ * unsigned LEN;
+ */
+#define PNOBREAK(OBJP, LEN) ((OBJP)->op_len >= LEN)
+
+/*
+ * PSKIP(OBJP, LEN)
+ * struct objpos *OBJP;
+ * unsigned LEN;
+ */
+#define PSKIP(OBJP, LEN)\
+ { (OBJP)->op_cp += (LEN); (OBJP)->op_len -= (LEN); }
+
+#endif /* ITEMPOS_H */