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132 lines
4.2 KiB
132 lines
4.2 KiB
/*
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* Copyright 2012-2014 Samy Al Bahra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _CK_HS_H
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#define _CK_HS_H
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#include <ck_cc.h>
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#include <ck_malloc.h>
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#include <ck_md.h>
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#include <ck_pr.h>
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#include <ck_stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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/*
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* Indicates a single-writer many-reader workload. Mutually
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* exclusive with CK_RHS_MODE_MPMC
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*/
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#define CK_RHS_MODE_SPMC 1
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/*
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* Indicates that values to be stored are not pointers but
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* values. Allows for full precision. Mutually exclusive
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* with CK_RHS_MODE_OBJECT.
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*/
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#define CK_RHS_MODE_DIRECT 2
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/*
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* Indicates that the values to be stored are pointers.
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* Allows for space optimizations in the presence of pointer
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* packing. Mutually exclusive with CK_RHS_MODE_DIRECT.
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*/
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#define CK_RHS_MODE_OBJECT 8
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/*
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* Indicated that the load is read-mostly, so get should be optimized
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* over put and delete
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*/
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#define CK_RHS_MODE_READ_MOSTLY 16
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/* Currently unsupported. */
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#define CK_RHS_MODE_MPMC (void)
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/*
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* Hash callback function.
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*/
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typedef unsigned long ck_rhs_hash_cb_t(const void *, unsigned long);
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/*
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* Returns pointer to object if objects are equivalent.
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*/
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typedef bool ck_rhs_compare_cb_t(const void *, const void *);
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#if defined(CK_MD_POINTER_PACK_ENABLE) && defined(CK_MD_VMA_BITS)
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#define CK_RHS_PP
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#define CK_RHS_KEY_MASK ((1U << ((sizeof(void *) * 8) - CK_MD_VMA_BITS)) - 1)
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#endif
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struct ck_rhs_map;
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struct ck_rhs {
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struct ck_malloc *m;
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struct ck_rhs_map *map;
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unsigned int mode;
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unsigned long seed;
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ck_rhs_hash_cb_t *hf;
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ck_rhs_compare_cb_t *compare;
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};
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typedef struct ck_rhs ck_rhs_t;
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struct ck_rhs_stat {
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unsigned long n_entries;
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unsigned int probe_maximum;
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};
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struct ck_rhs_iterator {
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void **cursor;
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unsigned long offset;
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};
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typedef struct ck_rhs_iterator ck_rhs_iterator_t;
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#define CK_RHS_ITERATOR_INITIALIZER { NULL, 0 }
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/* Convenience wrapper to table hash function. */
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#define CK_RHS_HASH(T, F, K) F((K), (T)->seed)
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void ck_rhs_iterator_init(ck_rhs_iterator_t *);
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bool ck_rhs_next(ck_rhs_t *, ck_rhs_iterator_t *, void **);
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bool ck_rhs_move(ck_rhs_t *, ck_rhs_t *, ck_rhs_hash_cb_t *,
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ck_rhs_compare_cb_t *, struct ck_malloc *);
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bool ck_rhs_init(ck_rhs_t *, unsigned int, ck_rhs_hash_cb_t *,
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ck_rhs_compare_cb_t *, struct ck_malloc *, unsigned long, unsigned long);
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void ck_rhs_destroy(ck_rhs_t *);
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void *ck_rhs_get(ck_rhs_t *, unsigned long, const void *);
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bool ck_rhs_put(ck_rhs_t *, unsigned long, const void *);
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bool ck_rhs_put_unique(ck_rhs_t *, unsigned long, const void *);
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bool ck_rhs_set(ck_rhs_t *, unsigned long, const void *, void **);
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bool ck_rhs_fas(ck_rhs_t *, unsigned long, const void *, void **);
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void *ck_rhs_remove(ck_rhs_t *, unsigned long, const void *);
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bool ck_rhs_grow(ck_rhs_t *, unsigned long);
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bool ck_rhs_rebuild(ck_rhs_t *);
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bool ck_rhs_gc(ck_rhs_t *);
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unsigned long ck_rhs_count(ck_rhs_t *);
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bool ck_rhs_reset(ck_rhs_t *);
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bool ck_rhs_reset_size(ck_rhs_t *, unsigned long);
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void ck_rhs_stat(ck_rhs_t *, struct ck_rhs_stat *);
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#endif /* _CK_HS_H */
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