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78 lines
2.6 KiB
78 lines
2.6 KiB
5 months ago
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#ifndef KEYCACHES_INCLUDED
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#define KEYCACHES_INCLUDED
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/* Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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 02110-1301 USA */
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#include <string.h>
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#include "keycache.h"
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#include "lex_string.h"
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#include "my_inttypes.h"
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#include "my_sys.h"
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#include "mysql/service_mysql_alloc.h"
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#include "sql/sql_list.h"
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#include "sql/thr_malloc.h"
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extern PSI_memory_key key_memory_NAMED_ILINK_name;
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typedef int (*process_key_cache_t)(const char *, KEY_CACHE *);
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/**
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ilink (intrusive list element) with a name
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*/
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class NAMED_ILINK : public ilink<NAMED_ILINK> {
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public:
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const char *name;
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size_t name_length;
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uchar *data;
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NAMED_ILINK(I_List<NAMED_ILINK> *links, const char *name_arg,
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size_t name_length_arg, uchar *data_arg)
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: name_length(name_length_arg), data(data_arg) {
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name = my_strndup(key_memory_NAMED_ILINK_name, name_arg, name_length,
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MYF(MY_WME));
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links->push_back(this);
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}
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bool cmp(const char *name_cmp, size_t length) {
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return length == name_length && !memcmp(name, name_cmp, length);
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}
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~NAMED_ILINK() { my_free(const_cast<char *>(name)); }
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};
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class NAMED_ILIST : public I_List<NAMED_ILINK> {
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public:
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void delete_elements();
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};
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extern LEX_CSTRING default_key_cache_base;
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extern KEY_CACHE zero_key_cache;
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extern NAMED_ILIST key_caches;
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KEY_CACHE *create_key_cache(const char *name, size_t length);
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KEY_CACHE *get_key_cache(const LEX_CSTRING *cache_name);
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KEY_CACHE *get_or_create_key_cache(const char *name, size_t length);
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bool process_key_caches(process_key_cache_t func);
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#endif /* KEYCACHES_INCLUDED */
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