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7 | 7 | * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group |
8 | 8 | * Portions Copyright (c) 1994, Regents of the University of California |
9 | 9 | * |
10 | | - * $Id: nbtree.h,v 1.50 2001/01/24 19:43:19 momjian Exp $ |
| 10 | + * $Id: nbtree.h,v 1.51 2001/02/07 23:34:18 vadim Exp $ |
11 | 11 | * |
12 | 12 | *------------------------------------------------------------------------- |
13 | 13 | */ |
@@ -50,6 +50,10 @@ typedef BTPageOpaqueData *BTPageOpaque; |
50 | 50 | #defineBTREE_METAPAGE0/* first page is meta */ |
51 | 51 | #defineBTREE_MAGIC0x053162 |
52 | 52 |
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| 53 | +#defineBTreeInvalidParent(opaque)\ |
| 54 | +(opaque->btpo_parent == InvalidBlockNumber || \ |
| 55 | +opaque->btpo_parent == BTREE_METAPAGE) |
| 56 | + |
53 | 57 | #defineBTREE_VERSION1 |
54 | 58 |
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55 | 59 | typedefstructBTMetaPageData |
|