86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2008 Blender Foundation.
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* All rights reserved.
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*/
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#ifndef __BLI_SMALLHASH_H__
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#define __BLI_SMALLHASH_H__
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/** \file
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* \ingroup bli
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*/
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#include "BLI_compiler_attrs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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uintptr_t key;
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void *val;
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} SmallHashEntry;
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/* how much stack space to use before dynamically allocating memory.
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* set to match one of the values in 'hashsizes' to avoid too many mallocs */
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#define SMSTACKSIZE 131
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typedef struct SmallHash {
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unsigned int nbuckets;
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unsigned int nentries;
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unsigned int cursize;
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SmallHashEntry *buckets;
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SmallHashEntry buckets_stack[SMSTACKSIZE];
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} SmallHash;
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typedef struct {
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const SmallHash *sh;
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unsigned int i;
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} SmallHashIter;
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void BLI_smallhash_init_ex(SmallHash *sh, const unsigned int nentries_reserve) ATTR_NONNULL(1);
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void BLI_smallhash_init(SmallHash *sh) ATTR_NONNULL(1);
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void BLI_smallhash_release(SmallHash *sh) ATTR_NONNULL(1);
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void BLI_smallhash_insert(SmallHash *sh, uintptr_t key, void *item) ATTR_NONNULL(1);
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bool BLI_smallhash_reinsert(SmallHash *sh, uintptr_t key, void *item) ATTR_NONNULL(1);
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bool BLI_smallhash_remove(SmallHash *sh, uintptr_t key) ATTR_NONNULL(1);
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void *BLI_smallhash_lookup(const SmallHash *sh, uintptr_t key)
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ATTR_NONNULL(1) ATTR_WARN_UNUSED_RESULT;
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void **BLI_smallhash_lookup_p(const SmallHash *sh, uintptr_t key)
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ATTR_NONNULL(1) ATTR_WARN_UNUSED_RESULT;
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bool BLI_smallhash_haskey(const SmallHash *sh, uintptr_t key) ATTR_NONNULL(1);
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int BLI_smallhash_len(const SmallHash *sh) ATTR_NONNULL(1);
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void *BLI_smallhash_iternext(SmallHashIter *iter, uintptr_t *key)
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ATTR_NONNULL(1) ATTR_WARN_UNUSED_RESULT;
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void **BLI_smallhash_iternext_p(SmallHashIter *iter, uintptr_t *key)
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ATTR_NONNULL(1) ATTR_WARN_UNUSED_RESULT;
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void *BLI_smallhash_iternew(const SmallHash *sh, SmallHashIter *iter, uintptr_t *key)
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ATTR_NONNULL(1) ATTR_WARN_UNUSED_RESULT;
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void **BLI_smallhash_iternew_p(const SmallHash *sh, SmallHashIter *iter, uintptr_t *key)
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ATTR_NONNULL(1) ATTR_WARN_UNUSED_RESULT;
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/* void BLI_smallhash_print(SmallHash *sh); */ /* UNUSED */
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#ifdef DEBUG
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double BLI_smallhash_calc_quality(SmallHash *sh);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* __BLI_SMALLHASH_H__ */
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