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103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
#ifndef INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_MAP_H
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#define INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_MAP_H
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/* Copyright (C) 2004 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; 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include <my_global.h>
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#include <my_sys.h>
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#include <m_string.h>
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#include <hash.h>
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#if defined(__GNUC__) && defined(USE_PRAGMA_INTERFACE)
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#pragma interface
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#endif
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class Guardian;
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class Instance;
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class Named_value_arr;
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class Thread_registry;
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extern int load_all_groups(char ***groups, const char *filename);
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extern void free_groups(char **groups);
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extern int create_instance_in_file(const LEX_STRING *instance_name,
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const Named_value_arr *options);
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/**
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Instance_map - stores all existing instances
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*/
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class Instance_map
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{
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public:
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/**
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Instance_map iterator
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*/
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class Iterator
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{
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private:
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uint current_instance;
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Instance_map *instance_map;
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public:
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Iterator(Instance_map *instance_map_arg) :
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current_instance(0), instance_map(instance_map_arg)
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{}
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void go_to_first();
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Instance *next();
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};
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public:
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Instance *find(const LEX_STRING *name);
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bool is_there_active_instance();
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void lock();
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void unlock();
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bool init();
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bool reset();
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int load();
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int process_one_option(const LEX_STRING *group, const char *option);
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int add_instance(Instance *instance);
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int remove_instance(Instance *instance);
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int create_instance(const LEX_STRING *instance_name,
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const Named_value_arr *options);
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public:
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Instance_map();
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~Instance_map();
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private:
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bool complete_initialization();
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private:
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enum { START_HASH_SIZE = 16 };
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pthread_mutex_t LOCK_instance_map;
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HASH hash;
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private:
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friend class Iterator;
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};
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#endif /* INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_MAP_H */
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