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#ifndef INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_MAP_H
#define INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_MAP_H
/* Copyright (C) 2004 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <my_global.h>
#include <my_sys.h>
#include <m_string.h>
#include <hash.h>
#if defined(__GNUC__) && defined(USE_PRAGMA_INTERFACE)
#pragma interface
#endif
class Guardian;
class Instance;
class Named_value_arr;
class Thread_registry;
extern int load_all_groups(char ***groups, const char *filename);
extern void free_groups(char **groups);
extern int create_instance_in_file(const LEX_STRING *instance_name,
const Named_value_arr *options);
/**
Instance_map - stores all existing instances
*/
class Instance_map
{
public:
/**
Instance_map iterator
*/
class Iterator
{
private:
uint current_instance;
Instance_map *instance_map;
public:
Iterator(Instance_map *instance_map_arg) :
current_instance(0), instance_map(instance_map_arg)
{}
void go_to_first();
Instance *next();
};
public:
Instance *find(const LEX_STRING *name);
bool is_there_active_instance();
void lock();
void unlock();
bool init();
bool reset();
int load();
int process_one_option(const LEX_STRING *group, const char *option);
int add_instance(Instance *instance);
int remove_instance(Instance *instance);
int create_instance(const LEX_STRING *instance_name,
const Named_value_arr *options);
public:
Instance_map();
~Instance_map();
private:
bool complete_initialization();
private:
enum { START_HASH_SIZE = 16 };
pthread_mutex_t LOCK_instance_map;
HASH hash;
private:
friend class Iterator;
};
#endif /* INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_MAP_H */
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