mirror of
https://github.com/MariaDB/server.git
synced 2025-04-26 11:49:09 +03:00
2f8849e2aa
sql/handler.cc: Removed temp work needed for making status variables work with plugins. sql/mysqld.cc: Removed call to plugin_load() (not needed any longer). sql/sql_plugin.cc: Status vars are now located in only one location (while this fixed execution path problems, we will need to now fix "the name" issues). Monty and I have a solution to this :) Added function for deiniting engines (before the logic was scattered about). Added step by step processing for startup of plugins. MyISAM is now loaded first (we will address this long term in a different manner). sql/sql_plugin.h: Removed calls that did not need to be extern.
84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
/* Copyright (C) 2005 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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#ifndef _sql_plugin_h
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#define _sql_plugin_h
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/*
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the following #define adds server-only members to enum_mysql_show_type,
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that is defined in plugin.h
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*/
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#define SHOW_FUNC SHOW_FUNC, SHOW_KEY_CACHE_LONG, SHOW_KEY_CACHE_LONGLONG, \
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SHOW_LONG_STATUS, SHOW_DOUBLE_STATUS, SHOW_HAVE, \
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SHOW_MY_BOOL, SHOW_HA_ROWS, SHOW_SYS, SHOW_LONG_NOFLUSH
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#include <mysql/plugin.h>
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#undef SHOW_FUNC
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typedef enum enum_mysql_show_type SHOW_TYPE;
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typedef struct st_mysql_show_var SHOW_VAR;
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#define MYSQL_ANY_PLUGIN -1
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enum enum_plugin_state
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{
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PLUGIN_IS_FREED= 0,
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PLUGIN_IS_DELETED,
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PLUGIN_IS_UNINITIALIZED,
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PLUGIN_IS_READY
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};
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/* A handle for the dynamic library containing a plugin or plugins. */
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struct st_plugin_dl
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{
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LEX_STRING dl;
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void *handle;
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struct st_mysql_plugin *plugins;
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int version;
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uint ref_count; /* number of plugins loaded from the library */
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};
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/* A handle of a plugin */
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struct st_plugin_int
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{
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LEX_STRING name;
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struct st_mysql_plugin *plugin;
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struct st_plugin_dl *plugin_dl;
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enum enum_plugin_state state;
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uint ref_count; /* number of threads using the plugin */
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void *data; /* plugin type specific, e.g. handlerton */
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};
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typedef int (*plugin_type_init)(struct st_plugin_int *);
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extern char *opt_plugin_dir_ptr;
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extern char opt_plugin_dir[FN_REFLEN];
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extern const LEX_STRING plugin_type_names[];
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extern int plugin_init(int);
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extern void plugin_shutdown(void);
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extern my_bool plugin_is_ready(const LEX_STRING *name, int type);
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extern st_plugin_int *plugin_lock(const LEX_STRING *name, int type);
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extern void plugin_unlock(struct st_plugin_int *plugin);
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extern my_bool mysql_install_plugin(THD *thd, const LEX_STRING *name, const LEX_STRING *dl);
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extern my_bool mysql_uninstall_plugin(THD *thd, const LEX_STRING *name);
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typedef my_bool (plugin_foreach_func)(THD *thd,
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st_plugin_int *plugin,
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void *arg);
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extern my_bool plugin_foreach(THD *thd, plugin_foreach_func *func,
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int type, void *arg);
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#endif
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