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840fe316d4
Partial commit of the greater MDEV-34348 scope. MDEV-34348: MariaDB is violating clang-16 -Wcast-function-type-strict Change the type of my_hash_get_key to: 1) Return const 2) Change the context parameter to be const void* Also fix casting in hash adjacent areas. Reviewed By: ============ Marko Mäkelä <marko.makela@mariadb.com>
107 lines
4.3 KiB
C
107 lines
4.3 KiB
C
/* Copyright (c) 2000, 2010, Oracle and/or its affiliates.
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Copyright (c) 2011, 2013, Monty Program Ab.
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This program 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; version 2 of the License.
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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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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
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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/* Dynamic hashing of record with different key-length */
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#ifndef _hash_h
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#define _hash_h
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#include "my_sys.h" /* DYNAMIC_ARRAY */
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/*
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This forward declaration is used from C files where the real
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definition is included before. Since C does not allow repeated
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typedef declarations, even when identical, the definition may not be
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repeated.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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Overhead to store an element in hash
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Can be used to approximate memory consumption for a hash
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*/
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#define HASH_OVERHEAD (sizeof(char*)*2)
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/* flags for hash_init */
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#define HASH_UNIQUE 1 /* hash_insert fails on duplicate key */
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#define HASH_THREAD_SPECIFIC 2 /* Mark allocated memory THREAD_SPECIFIC */
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typedef uint32 my_hash_value_type;
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typedef const uchar *(*my_hash_get_key)(const void *, size_t *, my_bool);
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typedef my_hash_value_type (*my_hash_function)(CHARSET_INFO *,
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const uchar *, size_t);
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typedef void (*my_hash_free_key)(void *);
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typedef my_bool (*my_hash_walk_action)(void *,void *);
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typedef struct st_hash {
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size_t key_offset,key_length; /* Length of key if const length */
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size_t blength;
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ulong records;
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uint flags;
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DYNAMIC_ARRAY array; /* Place for hash_keys */
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my_hash_get_key get_key;
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my_hash_function hash_function;
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void (*free)(void *);
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CHARSET_INFO *charset;
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} HASH;
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/* A search iterator state */
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typedef uint HASH_SEARCH_STATE;
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#define my_hash_init(A,B,C,D,E,F,G,H,I) my_hash_init2(A,B,0,C,D,E,F,G,0,H,I)
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my_bool my_hash_init2(PSI_memory_key psi_key, HASH *hash, uint growth_size,
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CHARSET_INFO *charset, ulong default_array_elements,
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size_t key_offset, size_t key_length,
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my_hash_get_key get_key, my_hash_function hash_function,
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void (*free_element)(void*), uint flags);
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void my_hash_free(HASH *tree);
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void my_hash_reset(HASH *hash);
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uchar *my_hash_element(HASH *hash, size_t idx);
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uchar *my_hash_search(const HASH *info, const uchar *key, size_t length);
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uchar *my_hash_search_using_hash_value(const HASH *info,
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my_hash_value_type hash_value,
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const uchar *key, size_t length);
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my_hash_value_type my_hash_sort(CHARSET_INFO *cs,
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const uchar *key, size_t length);
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#define my_calc_hash(A, B, C) my_hash_sort((A)->charset, B, C)
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uchar *my_hash_first(const HASH *info, const uchar *key, size_t length,
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HASH_SEARCH_STATE *state);
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uchar *my_hash_first_from_hash_value(const HASH *info,
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my_hash_value_type hash_value,
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const uchar *key,
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size_t length,
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HASH_SEARCH_STATE *state);
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uchar *my_hash_next(const HASH *info, const uchar *key, size_t length,
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HASH_SEARCH_STATE *state);
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my_bool my_hash_insert(HASH *info, const uchar *data);
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my_bool my_hash_delete(HASH *hash, uchar *record);
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my_bool my_hash_update(HASH *hash, uchar *record, uchar *old_key,
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size_t old_key_length);
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void my_hash_replace(HASH *hash, HASH_SEARCH_STATE *state, uchar *new_row);
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my_bool my_hash_check(HASH *hash); /* Only in debug library */
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my_bool my_hash_iterate(HASH *hash, my_hash_walk_action action, void *argument);
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#define my_hash_clear(H) bzero((char*) (H), sizeof(*(H)))
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#define my_hash_inited(H) ((H)->blength != 0)
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#define my_hash_init_opt(A,B,C,D,E,F,G,H,I) \
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(!my_hash_inited(B) && my_hash_init(A,B,C,D,E,F,G,H,I))
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#ifdef __cplusplus
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}
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#endif
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#endif
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