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76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/* hash.c -- gas hash table code
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Copyright (C) 1987-2023 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "as.h"
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/* Hash function for a string_tuple. */
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hashval_t
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hash_string_tuple (const void *e)
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{
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string_tuple_t *tuple = (string_tuple_t *) e;
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return htab_hash_string (tuple->key);
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}
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/* Equality function for a string_tuple. */
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int
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eq_string_tuple (const void *a, const void *b)
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{
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const string_tuple_t *ea = (const string_tuple_t *) a;
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const string_tuple_t *eb = (const string_tuple_t *) b;
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return strcmp (ea->key, eb->key) == 0;
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}
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/* Insert ELEMENT into HTAB. If REPLACE is non-zero existing elements
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are overwritten. If ELEMENT already exists, a pointer to the slot
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is returned. Otherwise NULL is returned. */
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void **
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htab_insert (htab_t htab, void *element, int replace)
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{
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void **slot = htab_find_slot (htab, element, INSERT);
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if (*slot != NULL)
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{
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if (replace)
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{
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if (htab->del_f)
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(*htab->del_f) (*slot);
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*slot = element;
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}
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return slot;
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}
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*slot = element;
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return NULL;
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}
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/* Print statistics about a hash table. */
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void
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htab_print_statistics (FILE *f, const char *name, htab_t table)
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{
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fprintf (f, "%s hash statistics:\n", name);
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fprintf (f, "\t%u searches\n", table->searches);
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fprintf (f, "\t%u collisions\n", table->collisions);
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fprintf (f, "\t%lu elements\n", (unsigned long) htab_elements (table));
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fprintf (f, "\t%lu table size\n", (unsigned long) htab_size (table));
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}
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