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96e7be58c8
Some bigger code changes was necessary becasue of the multi-table-update and the new HANDLER code include/hash.h: Added back function that's was used in 4.0 mysql-test/r/delete.result: Update results after merge mysql-test/r/flush_table.result: Update results after merge mysql-test/r/func_str.result: Update results after merge mysql-test/r/handler.result: Update results after merge Change is big becasue in MySQL 4.1 you are not allowed to qualify the handler alias with a databasename mysql-test/r/multi_update.result: More startup cleanups mysql-test/r/rename.result: More startup-cleanups mysql-test/r/select.result: More startup cleanups mysql-test/r/show_check.result: More startup-cleanups mysql-test/t/ctype_latin1_de.test: Cleanup mysql-test/t/derived.test: Portability fix mysql-test/t/handler.test: Update results after merge Change is big becasue in MySQL 4.1 you are not allowed to qualify the handler alias with a databasename mysql-test/t/multi_update.test: More startup cleanups mysql-test/t/range.test: More comments mysql-test/t/rename.test: More startup cleanups mysql-test/t/select.test: More startup cleanups mysql-test/t/show_check.test: More startup cleanups mysql-test/t/type_timestamp.test: Add back test deleted during merge sql/item_cmpfunc.cc: After merge fixes sql/item_func.cc: Remove compiler warning sql/mysql_priv.h: After merge fixes sql/mysqld.cc: After merge fixes sql/sql_acl.cc: More debugging sql/sql_base.cc: After merge fixes (This fix was needed bacause of multi-table-update reopens tables) sql/sql_handler.cc: After merge fixes sql/sql_lex.h: After merge fixes sql/sql_select.cc: After merge fixes sql/sql_show.cc: After merge fixes sql/sql_table.cc: After merge fixes Simple cleanup of mysql_discard_or_import_tablespace sql/sql_update.cc: After merge fixes Rework mysql_multi_update to take into account derived tables. sql/sql_yacc.yy: After merge fixes
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/* Copyright (C) 2000 MySQL 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; either version 2 of the License, or
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(at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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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#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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typedef byte *(*hash_get_key)(const byte *,uint*,my_bool);
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typedef void (*hash_free_key)(void *);
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typedef struct st_hash {
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uint key_offset,key_length; /* Length of key if const length */
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uint records,blength,current_record;
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uint flags;
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DYNAMIC_ARRAY array; /* Place for hash_keys */
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hash_get_key get_key;
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void (*free)(void *);
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CHARSET_INFO *charset;
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} HASH;
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#define hash_init(A,B,C,D,E,F,G,H) _hash_init(A,B,C,D,E,F,G, H CALLER_INFO)
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my_bool _hash_init(HASH *hash, CHARSET_INFO *charset,
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uint default_array_elements, uint key_offset,
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uint key_length, hash_get_key get_key,
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void (*free_element)(void*), uint flags CALLER_INFO_PROTO);
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void hash_free(HASH *tree);
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void hash_reset(HASH *hash);
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byte *hash_element(HASH *hash,uint idx);
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gptr hash_search(HASH *info,const byte *key,uint length);
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gptr hash_next(HASH *info,const byte *key,uint length);
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my_bool my_hash_insert(HASH *info,const byte *data);
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my_bool hash_delete(HASH *hash,byte *record);
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my_bool hash_update(HASH *hash,byte *record,byte *old_key,uint old_key_length);
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void hash_replace(HASH *hash, uint idx, byte *new_row);
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my_bool hash_check(HASH *hash); /* Only in debug library */
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#define hash_clear(H) bzero((char*) (H),sizeof(*(H)))
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#define hash_inited(H) ((H)->array.buffer != 0)
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#ifdef __cplusplus
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}
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#endif
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#endif
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