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/* Copyright (C) 2005 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; either version 2 of the License, or
(at your option) any later version.
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 */
#ifndef _sql_plugin_h
#define _sql_plugin_h
/*
the following #define adds server-only members to enum_mysql_show_type,
that is defined in plugin.h
*/
#define SHOW_FUNC SHOW_FUNC, SHOW_KEY_CACHE_LONG, SHOW_KEY_CACHE_LONGLONG, \
SHOW_LONG_STATUS, SHOW_DOUBLE_STATUS, SHOW_HAVE, \
SHOW_MY_BOOL, SHOW_HA_ROWS, SHOW_SYS, SHOW_LONG_NOFLUSH
#include <mysql/plugin.h>
#undef SHOW_FUNC
typedef enum enum_mysql_show_type SHOW_TYPE;
typedef struct st_mysql_show_var SHOW_VAR;
#define MYSQL_ANY_PLUGIN -1
enum enum_plugin_state
{
PLUGIN_IS_FREED= 0,
PLUGIN_IS_DELETED,
PLUGIN_IS_UNINITIALIZED,
PLUGIN_IS_READY
};
/* A handle for the dynamic library containing a plugin or plugins. */
struct st_plugin_dl
{
LEX_STRING dl;
void *handle;
struct st_mysql_plugin *plugins;
int version;
uint ref_count; /* number of plugins loaded from the library */
};
/* A handle of a plugin */
struct st_plugin_int
{
LEX_STRING name;
struct st_mysql_plugin *plugin;
struct st_plugin_dl *plugin_dl;
enum enum_plugin_state state;
uint ref_count; /* number of threads using the plugin */
void *data; /* plugin type specific, e.g. handlerton */
};
typedef int (*plugin_type_init)(struct st_plugin_int *);
extern char *opt_plugin_dir_ptr;
extern char opt_plugin_dir[FN_REFLEN];
extern const LEX_STRING plugin_type_names[];
extern int plugin_init(void);
extern void plugin_load(void);
extern void plugin_free(void);
extern my_bool plugin_is_ready(const LEX_STRING *name, int type);
extern st_plugin_int *plugin_lock(const LEX_STRING *name, int type);
extern void plugin_unlock(struct st_plugin_int *plugin);
extern my_bool mysql_install_plugin(THD *thd, const LEX_STRING *name, const LEX_STRING *dl);
extern my_bool mysql_uninstall_plugin(THD *thd, const LEX_STRING *name);
extern my_bool plugin_register_builtin(struct st_mysql_plugin *plugin);
typedef my_bool (plugin_foreach_func)(THD *thd,
st_plugin_int *plugin,
void *arg);
extern my_bool plugin_foreach(THD *thd, plugin_foreach_func *func,
int type, void *arg);
#endif
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