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| author | Bruce Momjian <bruce@momjian.us> | 1997-08-06 03:42:21 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 1997-08-06 03:42:21 +0000 |
| commit | f5f366e18829c982273540d88a1ac81c9c85d401 (patch) | |
| tree | 347fc45caa2420d381e963d6b95bd6109085a163 /src/include/utils/lselect.h | |
| parent | 3bea7b138bbdf6129b36fbdab158526544262980 (diff) | |
| download | postgresql-f5f366e18829c982273540d88a1ac81c9c85d401.tar.gz postgresql-f5f366e18829c982273540d88a1ac81c9c85d401.zip | |
Allow internal sorts to be stored in memory rather than in files.
Diffstat (limited to 'src/include/utils/lselect.h')
| -rw-r--r-- | src/include/utils/lselect.h | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/src/include/utils/lselect.h b/src/include/utils/lselect.h index 7cb5f8d185e..048ea932e28 100644 --- a/src/include/utils/lselect.h +++ b/src/include/utils/lselect.h @@ -6,15 +6,15 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: lselect.h,v 1.3 1996/11/04 11:51:19 scrappy Exp $ - * + * $Id: lselect.h,v 1.4 1997/08/06 03:42:07 momjian Exp $ + * *------------------------------------------------------------------------- */ #ifndef LSELECT_H #define LSELECT_H #include <stdio.h> -#include <access/htup.h> +#include "access/htup.h" struct leftist { short lt_dist; /* distance to leaf/empty node */ @@ -24,17 +24,26 @@ struct leftist { struct leftist *lt_right; }; -extern struct leftist *Tuples; +/* replaces global variables in lselect.c to make it reentrant */ +typedef struct { + TupleDesc tupDesc; + int nKeys; + ScanKey scanKeys; + int sortMem; /* needed for psort */ +} LeftistContextData; +typedef LeftistContextData *LeftistContext; -extern struct leftist *lmerge(struct leftist *pt, struct leftist *qt); -extern HeapTuple gettuple(struct leftist **treep, short *devnum); -extern int puttuple(struct leftist **treep, HeapTuple newtuple, int devnum); -extern void dumptuples(FILE *file); -extern int tuplecmp(HeapTuple ltup, HeapTuple rtup); +extern struct leftist *lmerge(struct leftist *pt, struct leftist *qt, + LeftistContext context); +extern HeapTuple gettuple(struct leftist **treep, short *devnum, + LeftistContext context); +extern void puttuple(struct leftist **treep, HeapTuple newtuple, short devnum, + LeftistContext context); +extern int tuplecmp(HeapTuple ltup, HeapTuple rtup, LeftistContext context); #ifdef EBUG -extern void checktree(struct leftist *tree); -extern int checktreer(struct leftist *tree, int level); +extern void checktree(struct leftist *tree, LeftistContext context); +extern int checktreer(struct leftist *tree, int level, LeftistContext context); #endif /* EBUG */ #endif /* LSELECT_H */ |