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Commit15903a1

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committed
Comment improvements.
1 parentbe92ad4 commit15903a1

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4 files changed

+20
-14
lines changed

4 files changed

+20
-14
lines changed

‎src/include/access/htup.h

Lines changed: 11 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $Id: htup.h,v 1.45 2001/01/24 19:43:19 momjian Exp $
10+
* $Id: htup.h,v 1.46 2001/02/21 19:07:04 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -32,7 +32,9 @@
3232
#defineMaxHeapAttributeNumber1600/* 8 * 200 */
3333

3434
/*
35-
* to avoid wasting space, the attributes should be layed out in such a
35+
* This is the on-disk copy of the tuple.
36+
*
37+
* To avoid wasting space, the attributes should be layed out in such a
3638
* way to reduce structure padding.
3739
*/
3840
typedefstructHeapTupleHeaderData
@@ -51,12 +53,12 @@ typedef struct HeapTupleHeaderData
5153

5254
uint16t_infomask;/* various infos */
5355

54-
uint8t_hoff;/* sizeof tuple header */
56+
uint8t_hoff;/* sizeof() tuple header */
5557

5658
/* ^ - 31 bytes - ^ */
5759

5860
bits8t_bits[MinHeapTupleBitmapSize /8];
59-
/* bit map ofdomains */
61+
/* bit map ofNULLs */
6062

6163
/* MORE DATA FOLLOWS AT END OF STRUCT */
6264
}HeapTupleHeaderData;
@@ -174,6 +176,8 @@ typedef struct xl_heap_clean
174176
#defineFirstLowInvalidHeapAttributeNumber(-8)
175177

176178
/*
179+
* This is the in-memory copy of the tuple.
180+
*
177181
* This new HeapTuple for version >= 6.5 and this is why it was changed:
178182
*
179183
* 1. t_len moved off on-disk tuple data - ItemIdData is used to get len;
@@ -190,10 +194,10 @@ typedef struct xl_heap_clean
190194
typedefstructHeapTupleData
191195
{
192196
uint32t_len;/* length of *t_data */
193-
ItemPointerDatat_self;/* SelfItemPointer */
197+
ItemPointerDatat_self;/* SelfItemPointer */
194198
Oidt_tableOid;/* table the tuple came from */
195-
MemoryContextt_datamcxt;/*mcxt in which allocated */
196-
HeapTupleHeadert_data;/* -> tuple header and data */
199+
MemoryContextt_datamcxt;/*memory context of allocation */
200+
HeapTupleHeadert_data;/* -> tuple header and data */
197201
}HeapTupleData;
198202

199203
typedefHeapTupleData*HeapTuple;

‎src/include/access/itup.h

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $Id: itup.h,v 1.28 2001/01/24 19:43:19 momjian Exp $
10+
* $Id: itup.h,v 1.29 2001/02/21 19:07:04 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -22,7 +22,7 @@
2222

2323
typedefstructIndexTupleData
2424
{
25-
ItemPointerDatat_tid;/* reference TID tobase tuple */
25+
ItemPointerDatat_tid;/* reference TID toheap tuple */
2626

2727
/*
2828
* t_info is layed out in the following fashion:

‎src/include/access/nbtree.h

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $Id: nbtree.h,v 1.51 2001/02/07 23:34:18 vadim Exp $
10+
* $Id: nbtree.h,v 1.52 2001/02/21 19:07:04 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -37,15 +37,17 @@ typedef struct BTPageOpaqueData
3737
BlockNumberbtpo_parent;
3838
uint16btpo_flags;
3939

40+
}BTPageOpaqueData;
41+
42+
typedefBTPageOpaqueData*BTPageOpaque;
43+
4044
/* Bits defined in btpo_flags */
4145
#defineBTP_LEAF(1 << 0)/* It's a leaf page */
4246
#defineBTP_ROOT(1 << 1)/* It's the root page (has no parent) */
4347
#defineBTP_FREE(1 << 2)/* not currently used... */
4448
#defineBTP_META(1 << 3)/* Set in the meta-page only */
4549
#defineBTP_REORDER(1 << 4)/* items must be re-ordered */
46-
}BTPageOpaqueData;
4750

48-
typedefBTPageOpaqueData*BTPageOpaque;
4951

5052
#defineBTREE_METAPAGE0/* first page is meta */
5153
#defineBTREE_MAGIC0x053162

‎src/include/storage/bufpage.h

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $Id: bufpage.h,v 1.39 2001/01/24 19:43:27 momjian Exp $
10+
* $Id: bufpage.h,v 1.40 2001/02/21 19:07:04 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -23,7 +23,7 @@
2323
#include"access/xlog.h"
2424

2525
/*
26-
*a postgres disk page is an abstraction layered on top of a postgres
26+
*A postgres disk page is an abstraction layered on top of a postgres
2727
* disk block (which is simply a unit of i/o, see block.h).
2828
*
2929
* specifically, while a disk block can be unformatted, a postgres

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