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- #ifndef _LSELECT_H_
- #define _LSELECT_H_ "$Header: /private/postgres/src/lib/H/utils/RCS/lselect.h,v 1.8 1991/11/12 20:24:42 mer Exp $"
-
- /* ----------------------------------------------------------------
- * lselect.h - definitions for the replacement selection algorithm.
- *
- * This file is used by
- * utils/sort/lselect.c
- * utils/sort/psort.c
- *
- * -cim 6/12/90
- * ----------------------------------------------------------------
- */
-
- #include "tmp/c.h"
- #include "access/htup.h"
-
- struct leftist {
- short lt_dist; /* distance to leaf/empty node */
- short lt_devnum; /* device number of tuple */
- HeapTuple lt_tuple;
- struct leftist *lt_left;
- struct leftist *lt_right;
- };
-
- extern struct leftist *Tuples;
-
- struct leftist *lmerge ARGS((struct leftist *pt , struct leftist *qt ));
- HeapTuple gettuple ARGS((struct leftist **treep , short *devnum ));
- int puttuple ARGS((struct leftist **treep , HeapTuple newtuple , int devnum ));
- int dumptuples ARGS((FILE *file ));
- int tuplecmp ARGS((HeapTuple ltup , HeapTuple rtup ));
-
- #ifdef EBUG
- int checktree ARGS((struct leftist *tree ));
- int checktreer ARGS((struct leftist *tree , int level ));
- #endif EBUG
-
- #endif _LSELECT_H_
-