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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2009-11-01 22:30:54 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2009-11-01 22:30:54 +0000 |
| commit | 7d535ebe5bf95ca88891c0288fa1c6575498185e (patch) | |
| tree | 3b26f8d66fde2c0c192c3df03691b0ff28c5a747 /src/include/access/hash.h | |
| parent | c4afdca4c26df63e4942ef300e544c7118c6af56 (diff) | |
| download | postgresql-7d535ebe5bf95ca88891c0288fa1c6575498185e.tar.gz | |
Dept of second thoughts: after studying index_getnext() a bit more I realize
that it can scribble on scan->xs_ctup.t_self while following HOT chains,
so we can't rely on that to stay valid between hashgettuple() calls.
Introduce a private variable in HashScanOpaque, instead.
Diffstat (limited to 'src/include/access/hash.h')
| -rw-r--r-- | src/include/access/hash.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/include/access/hash.h b/src/include/access/hash.h index 100ccb9e6d..ce5417044a 100644 --- a/src/include/access/hash.h +++ b/src/include/access/hash.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/hash.h,v 1.94 2009/11/01 21:25:25 tgl Exp $ + * $PostgreSQL: pgsql/src/include/access/hash.h,v 1.95 2009/11/01 22:30:54 tgl Exp $ * * NOTES * modeled after Margo Seltzer's hash implementation for unix. @@ -99,8 +99,11 @@ typedef struct HashScanOpaqueData */ Buffer hashso_curbuf; - /* Current position of the scan */ + /* Current position of the scan, as an index TID */ ItemPointerData hashso_curpos; + + /* Current position of the scan, as a heap TID */ + ItemPointerData hashso_heappos; } HashScanOpaqueData; typedef HashScanOpaqueData *HashScanOpaque; |