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50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* hasht.c
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* hash table related functions that are not directly supported
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* by the hashing packages under utils/hash.
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/lib/Attic/hasht.c,v 1.8 1999/02/13 23:15:35 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include <postgres.h>
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#include <utils/memutils.h>
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#include <utils/hsearch.h>
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#include <lib/hasht.h>
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/* -----------------------------------
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* HashTableWalk
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*
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* call function on every element in hashtable
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* one extra argument, arg may be supplied
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* -----------------------------------
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*/
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void
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HashTableWalk(HTAB *hashtable, HashtFunc function, int arg)
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{
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long *hashent;
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long *data;
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int keysize;
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keysize = hashtable->hctl->keysize;
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hash_seq((HTAB *) NULL);
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while ((hashent = hash_seq(hashtable)) != (long *) TRUE)
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{
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if (hashent == NULL)
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elog(FATAL, "error in HashTableWalk.");
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/*
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* XXX the corresponding hash table insertion does NOT LONGALIGN
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* -- make sure the keysize is ok
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*/
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data = (long *) LONGALIGN((char *) hashent + keysize);
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(*function) (data, arg);
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}
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}
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