mariadb/handler/i_s.cc

/*****************************************************************************

Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved.

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

*****************************************************************************/

/**************************************************//**
@file handler/i_s.cc
InnoDB INFORMATION SCHEMA tables interface to MySQL.

Created July 18, 2007 Vasil Dimov
*******************************************************/

#include <mysqld_error.h>
#include <sql_acl.h>                            // PROCESS_ACL

#include <m_ctype.h>
#include <hash.h>
#include <myisampack.h>
#include <mysys_err.h>
#include <my_sys.h>
#include "i_s.h"
#include <sql_plugin.h>
#include <mysql/innodb_priv.h>

extern "C" {
#include "btr0pcur.h"	/* for file sys_tables related info. */
#include "btr0types.h"
#include "buf0buddy.h" /* for i_s_cmpmem */
#include "buf0buf.h" /* for buf_pool and PAGE_ZIP_MIN_SIZE */
#include "dict0load.h"	/* for file sys_tables related info. */
#include "dict0mem.h"
#include "dict0types.h"
#include "ha_prototypes.h" /* for innobase_convert_name() */
#include "srv0start.h" /* for srv_was_started */
#include "trx0i_s.h"
#include "trx0trx.h" /* for TRX_QUE_STATE_STR_MAX_LEN */
#include "trx0rseg.h" /* for trx_rseg_struct */
#include "trx0sys.h" /* for trx_sys */
#include "dict0dict.h" /* for dict_sys */
#include "buf0lru.h" /* for XTRA_LRU_[DUMP/RESTORE] */
#include "btr0btr.h" /* for btr_page_get_index_id */
}

#define OK(expr)		\
	if ((expr) != 0) {	\
		DBUG_RETURN(1);	\
	}

#define RETURN_IF_INNODB_NOT_STARTED(plugin_name)			\
do {									\
	if (!srv_was_started) {						\
		push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,	\
				    ER_CANT_FIND_SYSTEM_REC,		\
				    "InnoDB: SELECTing from "		\
				    "INFORMATION_SCHEMA.%s but "	\
				    "the InnoDB storage engine "	\
				    "is not installed", plugin_name);	\
		DBUG_RETURN(0);						\
	}								\
} while (0)

#if !defined __STRICT_ANSI__ && defined __GNUC__ && (__GNUC__) > 2 && !defined __INTEL_COMPILER
#define STRUCT_FLD(name, value)	name: value
#else
#define STRUCT_FLD(name, value)	value
#endif

/* Don't use a static const variable here, as some C++ compilers (notably
HPUX aCC: HP ANSI C++ B3910B A.03.65) can't handle it. */
#define END_OF_ST_FIELD_INFO \
	{STRUCT_FLD(field_name,		NULL), \
	 STRUCT_FLD(field_length,	0), \
	 STRUCT_FLD(field_type,		MYSQL_TYPE_NULL), \
	 STRUCT_FLD(value,		0), \
	 STRUCT_FLD(field_flags,	0), \
	 STRUCT_FLD(old_name,		""), \
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)}

/*
Use the following types mapping:

C type	ST_FIELD_INFO::field_type
---------------------------------
long			MYSQL_TYPE_LONGLONG
(field_length=MY_INT64_NUM_DECIMAL_DIGITS)

long unsigned		MYSQL_TYPE_LONGLONG
(field_length=MY_INT64_NUM_DECIMAL_DIGITS, field_flags=MY_I_S_UNSIGNED)

char*			MYSQL_TYPE_STRING
(field_length=n)

float			MYSQL_TYPE_FLOAT
(field_length=0 is ignored)

void*			MYSQL_TYPE_LONGLONG
(field_length=MY_INT64_NUM_DECIMAL_DIGITS, field_flags=MY_I_S_UNSIGNED)

boolean (if else)	MYSQL_TYPE_LONG
(field_length=1)

time_t			MYSQL_TYPE_DATETIME
(field_length=0 ignored)
---------------------------------
*/

/*******************************************************************//**
Common function to fill any of the dynamic tables:
INFORMATION_SCHEMA.innodb_trx
INFORMATION_SCHEMA.innodb_locks
INFORMATION_SCHEMA.innodb_lock_waits
@return	0 on success */
static
int
trx_i_s_common_fill_table(
/*======================*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond);	/*!< in: condition (not used) */

/*******************************************************************//**
Unbind a dynamic INFORMATION_SCHEMA table.
@return	0 on success */
static
int
i_s_common_deinit(
/*==============*/
	void*	p);	/*!< in/out: table schema object */
/*******************************************************************//**
Auxiliary function to store time_t value in MYSQL_TYPE_DATETIME
field.
@return	0 on success */
static
int
field_store_time_t(
/*===============*/
	Field*	field,	/*!< in/out: target field for storage */
	time_t	time)	/*!< in: value to store */
{
	MYSQL_TIME	my_time;
	struct tm	tm_time;

#if 0
	/* use this if you are sure that `variables' and `time_zone'
	are always initialized */
	thd->variables.time_zone->gmt_sec_to_TIME(
		&my_time, (my_time_t) time);
#else
	localtime_r(&time, &tm_time);
	localtime_to_TIME(&my_time, &tm_time);
	my_time.time_type = MYSQL_TIMESTAMP_DATETIME;
#endif

	return(field->store_time(&my_time, MYSQL_TIMESTAMP_DATETIME));
}

/*******************************************************************//**
Auxiliary function to store char* value in MYSQL_TYPE_STRING field.
@return	0 on success */
static
int
field_store_string(
/*===============*/
	Field*		field,	/*!< in/out: target field for storage */
	const char*	str)	/*!< in: NUL-terminated utf-8 string,
				or NULL */
{
	int	ret;

	if (str != NULL) {

		ret = field->store(str, strlen(str),
				   system_charset_info);
		field->set_notnull();
	} else {

		ret = 0; /* success */
		field->set_null();
	}

	return(ret);
}

/*******************************************************************//**
Auxiliary function to store ulint value in MYSQL_TYPE_LONGLONG field.
If the value is ULINT_UNDEFINED then the field it set to NULL.
@return	0 on success */
static
int
field_store_ulint(
/*==============*/
	Field*	field,	/*!< in/out: target field for storage */
	ulint	n)	/*!< in: value to store */
{
	int	ret;

	if (n != ULINT_UNDEFINED) {

		ret = field->store(n);
		field->set_notnull();
	} else {

		ret = 0; /* success */
		field->set_null();
	}

	return(ret);
}

/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_trx */
static ST_FIELD_INFO	innodb_trx_fields_info[] =
{
#define IDX_TRX_ID		0
	{STRUCT_FLD(field_name,		"trx_id"),
	 STRUCT_FLD(field_length,	TRX_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_STATE		1
	{STRUCT_FLD(field_name,		"trx_state"),
	 STRUCT_FLD(field_length,	TRX_QUE_STATE_STR_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_STARTED		2
	{STRUCT_FLD(field_name,		"trx_started"),
	 STRUCT_FLD(field_length,	0),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_DATETIME),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_REQUESTED_LOCK_ID	3
	{STRUCT_FLD(field_name,		"trx_requested_lock_id"),
	 STRUCT_FLD(field_length,	TRX_I_S_LOCK_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_WAIT_STARTED	4
	{STRUCT_FLD(field_name,		"trx_wait_started"),
	 STRUCT_FLD(field_length,	0),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_DATETIME),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_WEIGHT		5
	{STRUCT_FLD(field_name,		"trx_weight"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_MYSQL_THREAD_ID	6
	{STRUCT_FLD(field_name,		"trx_mysql_thread_id"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_QUERY		7
	{STRUCT_FLD(field_name,		"trx_query"),
	 STRUCT_FLD(field_length,	TRX_I_S_TRX_QUERY_MAX_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_OPERATION_STATE	8
	{STRUCT_FLD(field_name,		"trx_operation_state"),
	 STRUCT_FLD(field_length,	TRX_I_S_TRX_OP_STATE_MAX_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_TABLES_IN_USE	9
	{STRUCT_FLD(field_name,		"trx_tables_in_use"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_TABLES_LOCKED	10
	{STRUCT_FLD(field_name,		"trx_tables_locked"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_LOCK_STRUCTS	11
	{STRUCT_FLD(field_name,		"trx_lock_structs"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_LOCK_MEMORY_BYTES	12
	{STRUCT_FLD(field_name,		"trx_lock_memory_bytes"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_ROWS_LOCKED	13
	{STRUCT_FLD(field_name,		"trx_rows_locked"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_ROWS_MODIFIED		14
	{STRUCT_FLD(field_name,		"trx_rows_modified"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_CONNCURRENCY_TICKETS	15
	{STRUCT_FLD(field_name,		"trx_concurrency_tickets"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_ISOLATION_LEVEL	16
	{STRUCT_FLD(field_name,		"trx_isolation_level"),
	 STRUCT_FLD(field_length,	TRX_I_S_TRX_ISOLATION_LEVEL_MAX_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_UNIQUE_CHECKS	17
	{STRUCT_FLD(field_name,		"trx_unique_checks"),
	 STRUCT_FLD(field_length,	1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		1),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_FOREIGN_KEY_CHECKS	18
	{STRUCT_FLD(field_name,		"trx_foreign_key_checks"),
	 STRUCT_FLD(field_length,	1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		1),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_LAST_FOREIGN_KEY_ERROR	19
	{STRUCT_FLD(field_name,		"trx_last_foreign_key_error"),
	 STRUCT_FLD(field_length,	TRX_I_S_TRX_FK_ERROR_MAX_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_ADAPTIVE_HASH_LATCHED	20
	{STRUCT_FLD(field_name,		"trx_adaptive_hash_latched"),
	 STRUCT_FLD(field_length,	1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_TRX_ADAPTIVE_HASH_TIMEOUT	21
	{STRUCT_FLD(field_name,		"trx_adaptive_hash_timeout"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/*******************************************************************//**
Read data from cache buffer and fill the INFORMATION_SCHEMA.innodb_trx
table with it.
@return	0 on success */
static
int
fill_innodb_trx_from_cache(
/*=======================*/
	trx_i_s_cache_t*	cache,	/*!< in: cache to read from */
	THD*			thd,	/*!< in: used to call
					schema_table_store_record() */
	TABLE*			table)	/*!< in/out: fill this table */
{
	Field**	fields;
	ulint	rows_num;
	char	lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
	ulint	i;

	DBUG_ENTER("fill_innodb_trx_from_cache");

	fields = table->field;

	rows_num = trx_i_s_cache_get_rows_used(cache,
					       I_S_INNODB_TRX);

	for (i = 0; i < rows_num; i++) {

		i_s_trx_row_t*	row;
		char		trx_id[TRX_ID_MAX_LEN + 1];

		row = (i_s_trx_row_t*)
			trx_i_s_cache_get_nth_row(
				cache, I_S_INNODB_TRX, i);

		/* trx_id */
		ut_snprintf(trx_id, sizeof(trx_id), TRX_ID_FMT, row->trx_id);
		OK(field_store_string(fields[IDX_TRX_ID], trx_id));

		/* trx_state */
		OK(field_store_string(fields[IDX_TRX_STATE],
				      row->trx_state));

		/* trx_started */
		OK(field_store_time_t(fields[IDX_TRX_STARTED],
				      (time_t) row->trx_started));

		/* trx_requested_lock_id */
		/* trx_wait_started */
		if (row->trx_wait_started != 0) {

			OK(field_store_string(
				   fields[IDX_TRX_REQUESTED_LOCK_ID],
				   trx_i_s_create_lock_id(
					   row->requested_lock_row,
					   lock_id, sizeof(lock_id))));
			/* field_store_string() sets it no notnull */

			OK(field_store_time_t(
				   fields[IDX_TRX_WAIT_STARTED],
				   (time_t) row->trx_wait_started));
			fields[IDX_TRX_WAIT_STARTED]->set_notnull();
		} else {

			fields[IDX_TRX_REQUESTED_LOCK_ID]->set_null();
			fields[IDX_TRX_WAIT_STARTED]->set_null();
		}

		/* trx_weight */
		OK(fields[IDX_TRX_WEIGHT]->store((longlong) row->trx_weight,
						 true));

		/* trx_mysql_thread_id */
		OK(fields[IDX_TRX_MYSQL_THREAD_ID]->store(
			   row->trx_mysql_thread_id));

		/* trx_query */
		if (row->trx_query) {
			/* store will do appropriate character set
			conversion check */
			fields[IDX_TRX_QUERY]->store(
				row->trx_query, strlen(row->trx_query),
				row->trx_query_cs);
			fields[IDX_TRX_QUERY]->set_notnull();
		} else {
			fields[IDX_TRX_QUERY]->set_null();
		}

		/* trx_operation_state */
		OK(field_store_string(fields[IDX_TRX_OPERATION_STATE],
				      row->trx_operation_state));

		/* trx_tables_in_use */
		OK(fields[IDX_TRX_TABLES_IN_USE]->store(
			   (longlong) row->trx_tables_in_use, true));

		/* trx_tables_locked */
		OK(fields[IDX_TRX_TABLES_LOCKED]->store(
			   (longlong) row->trx_tables_locked, true));

		/* trx_lock_structs */
		OK(fields[IDX_TRX_LOCK_STRUCTS]->store(
			   (longlong) row->trx_lock_structs, true));

		/* trx_lock_memory_bytes */
		OK(fields[IDX_TRX_LOCK_MEMORY_BYTES]->store(
			   (longlong) row->trx_lock_memory_bytes, true));

		/* trx_rows_locked */
		OK(fields[IDX_TRX_ROWS_LOCKED]->store(
			   (longlong) row->trx_rows_locked, true));

		/* trx_rows_modified */
		OK(fields[IDX_TRX_ROWS_MODIFIED]->store(
			   (longlong) row->trx_rows_modified, true));

		/* trx_concurrency_tickets */
		OK(fields[IDX_TRX_CONNCURRENCY_TICKETS]->store(
			   (longlong) row->trx_concurrency_tickets, true));

		/* trx_isolation_level */
		OK(field_store_string(fields[IDX_TRX_ISOLATION_LEVEL],
				      row->trx_isolation_level));

		/* trx_unique_checks */
		OK(fields[IDX_TRX_UNIQUE_CHECKS]->store(
			   row->trx_unique_checks));

		/* trx_foreign_key_checks */
		OK(fields[IDX_TRX_FOREIGN_KEY_CHECKS]->store(
			   row->trx_foreign_key_checks));

		/* trx_last_foreign_key_error */
		OK(field_store_string(fields[IDX_TRX_LAST_FOREIGN_KEY_ERROR],
				      row->trx_foreign_key_error));

		/* trx_adaptive_hash_latched */
		OK(fields[IDX_TRX_ADAPTIVE_HASH_LATCHED]->store(
			   row->trx_has_search_latch));

		/* trx_adaptive_hash_timeout */
		OK(fields[IDX_TRX_ADAPTIVE_HASH_TIMEOUT]->store(
			   (longlong) row->trx_search_latch_timeout, true));

		OK(schema_table_store_record(thd, table));
	}

	DBUG_RETURN(0);
}

/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_trx
@return	0 on success */
static
int
innodb_trx_init(
/*============*/
	void*	p)	/*!< in/out: table schema object */
{
	ST_SCHEMA_TABLE*	schema;

	DBUG_ENTER("innodb_trx_init");

	schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = innodb_trx_fields_info;
	schema->fill_table = trx_i_s_common_fill_table;

	DBUG_RETURN(0);
}

static struct st_mysql_information_schema	i_s_info =
{
	MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION
};

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_trx =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_TRX"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, plugin_author),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB transactions"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_trx_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_locks */
static ST_FIELD_INFO	innodb_locks_fields_info[] =
{
#define IDX_LOCK_ID		0
	{STRUCT_FLD(field_name,		"lock_id"),
	 STRUCT_FLD(field_length,	TRX_I_S_LOCK_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_TRX_ID		1
	{STRUCT_FLD(field_name,		"lock_trx_id"),
	 STRUCT_FLD(field_length,	TRX_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_MODE		2
	{STRUCT_FLD(field_name,		"lock_mode"),
	 /* S[,GAP] X[,GAP] IS[,GAP] IX[,GAP] AUTO_INC UNKNOWN */
	 STRUCT_FLD(field_length,	32),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_TYPE		3
	{STRUCT_FLD(field_name,		"lock_type"),
	 STRUCT_FLD(field_length,	32 /* RECORD|TABLE|UNKNOWN */),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_TABLE		4
	{STRUCT_FLD(field_name,		"lock_table"),
	 STRUCT_FLD(field_length,	1024),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_INDEX		5
	{STRUCT_FLD(field_name,		"lock_index"),
	 STRUCT_FLD(field_length,	1024),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_SPACE		6
	{STRUCT_FLD(field_name,		"lock_space"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED | MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_PAGE		7
	{STRUCT_FLD(field_name,		"lock_page"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED | MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_REC		8
	{STRUCT_FLD(field_name,		"lock_rec"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED | MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_LOCK_DATA		9
	{STRUCT_FLD(field_name,		"lock_data"),
	 STRUCT_FLD(field_length,	TRX_I_S_LOCK_DATA_MAX_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/*******************************************************************//**
Read data from cache buffer and fill the INFORMATION_SCHEMA.innodb_locks
table with it.
@return	0 on success */
static
int
fill_innodb_locks_from_cache(
/*=========================*/
	trx_i_s_cache_t*	cache,	/*!< in: cache to read from */
	THD*			thd,	/*!< in: MySQL client connection */
	TABLE*			table)	/*!< in/out: fill this table */
{
	Field**	fields;
	ulint	rows_num;
	char	lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
	ulint	i;

	DBUG_ENTER("fill_innodb_locks_from_cache");

	fields = table->field;

	rows_num = trx_i_s_cache_get_rows_used(cache,
					       I_S_INNODB_LOCKS);

	for (i = 0; i < rows_num; i++) {

		i_s_locks_row_t*	row;
		char			buf[MAX_FULL_NAME_LEN + 1];
		const char*		bufend;

		char			lock_trx_id[TRX_ID_MAX_LEN + 1];

		row = (i_s_locks_row_t*)
			trx_i_s_cache_get_nth_row(
				cache, I_S_INNODB_LOCKS, i);

		/* lock_id */
		trx_i_s_create_lock_id(row, lock_id, sizeof(lock_id));
		OK(field_store_string(fields[IDX_LOCK_ID],
				      lock_id));

		/* lock_trx_id */
		ut_snprintf(lock_trx_id, sizeof(lock_trx_id),
			    TRX_ID_FMT, row->lock_trx_id);
		OK(field_store_string(fields[IDX_LOCK_TRX_ID], lock_trx_id));

		/* lock_mode */
		OK(field_store_string(fields[IDX_LOCK_MODE],
				      row->lock_mode));

		/* lock_type */
		OK(field_store_string(fields[IDX_LOCK_TYPE],
				      row->lock_type));

		/* lock_table */
		bufend = innobase_convert_name(buf, sizeof(buf),
					       row->lock_table,
					       strlen(row->lock_table),
					       thd, TRUE);
		OK(fields[IDX_LOCK_TABLE]->store(buf, bufend - buf,
						 system_charset_info));

		/* lock_index */
		if (row->lock_index != NULL) {

			bufend = innobase_convert_name(buf, sizeof(buf),
						       row->lock_index,
						       strlen(row->lock_index),
						       thd, FALSE);
			OK(fields[IDX_LOCK_INDEX]->store(buf, bufend - buf,
							 system_charset_info));
			fields[IDX_LOCK_INDEX]->set_notnull();
		} else {

			fields[IDX_LOCK_INDEX]->set_null();
		}

		/* lock_space */
		OK(field_store_ulint(fields[IDX_LOCK_SPACE],
				     row->lock_space));

		/* lock_page */
		OK(field_store_ulint(fields[IDX_LOCK_PAGE],
				     row->lock_page));

		/* lock_rec */
		OK(field_store_ulint(fields[IDX_LOCK_REC],
				     row->lock_rec));

		/* lock_data */
		OK(field_store_string(fields[IDX_LOCK_DATA],
				      row->lock_data));

		OK(schema_table_store_record(thd, table));
	}

	DBUG_RETURN(0);
}

/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_locks
@return	0 on success */
static
int
innodb_locks_init(
/*==============*/
	void*	p)	/*!< in/out: table schema object */
{
	ST_SCHEMA_TABLE*	schema;

	DBUG_ENTER("innodb_locks_init");

	schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = innodb_locks_fields_info;
	schema->fill_table = trx_i_s_common_fill_table;

	DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_locks =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_LOCKS"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, plugin_author),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB conflicting locks"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_locks_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_lock_waits */
static ST_FIELD_INFO	innodb_lock_waits_fields_info[] =
{
#define IDX_REQUESTING_TRX_ID	0
	{STRUCT_FLD(field_name,		"requesting_trx_id"),
	 STRUCT_FLD(field_length,	TRX_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_REQUESTED_LOCK_ID	1
	{STRUCT_FLD(field_name,		"requested_lock_id"),
	 STRUCT_FLD(field_length,	TRX_I_S_LOCK_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_BLOCKING_TRX_ID	2
	{STRUCT_FLD(field_name,		"blocking_trx_id"),
	 STRUCT_FLD(field_length,	TRX_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define IDX_BLOCKING_LOCK_ID	3
	{STRUCT_FLD(field_name,		"blocking_lock_id"),
	 STRUCT_FLD(field_length,	TRX_I_S_LOCK_ID_MAX_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/*******************************************************************//**
Read data from cache buffer and fill the
INFORMATION_SCHEMA.innodb_lock_waits table with it.
@return	0 on success */
static
int
fill_innodb_lock_waits_from_cache(
/*==============================*/
	trx_i_s_cache_t*	cache,	/*!< in: cache to read from */
	THD*			thd,	/*!< in: used to call
					schema_table_store_record() */
	TABLE*			table)	/*!< in/out: fill this table */
{
	Field**	fields;
	ulint	rows_num;
	char	requested_lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
	char	blocking_lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
	ulint	i;

	DBUG_ENTER("fill_innodb_lock_waits_from_cache");

	fields = table->field;

	rows_num = trx_i_s_cache_get_rows_used(cache,
					       I_S_INNODB_LOCK_WAITS);

	for (i = 0; i < rows_num; i++) {

		i_s_lock_waits_row_t*	row;

		char	requesting_trx_id[TRX_ID_MAX_LEN + 1];
		char	blocking_trx_id[TRX_ID_MAX_LEN + 1];

		row = (i_s_lock_waits_row_t*)
			trx_i_s_cache_get_nth_row(
				cache, I_S_INNODB_LOCK_WAITS, i);

		/* requesting_trx_id */
		ut_snprintf(requesting_trx_id, sizeof(requesting_trx_id),
			    TRX_ID_FMT, row->requested_lock_row->lock_trx_id);
		OK(field_store_string(fields[IDX_REQUESTING_TRX_ID],
				      requesting_trx_id));

		/* requested_lock_id */
		OK(field_store_string(
			   fields[IDX_REQUESTED_LOCK_ID],
			   trx_i_s_create_lock_id(
				   row->requested_lock_row,
				   requested_lock_id,
				   sizeof(requested_lock_id))));

		/* blocking_trx_id */
		ut_snprintf(blocking_trx_id, sizeof(blocking_trx_id),
			    TRX_ID_FMT, row->blocking_lock_row->lock_trx_id);
		OK(field_store_string(fields[IDX_BLOCKING_TRX_ID],
				      blocking_trx_id));

		/* blocking_lock_id */
		OK(field_store_string(
			   fields[IDX_BLOCKING_LOCK_ID],
			   trx_i_s_create_lock_id(
				   row->blocking_lock_row,
				   blocking_lock_id,
				   sizeof(blocking_lock_id))));

		OK(schema_table_store_record(thd, table));
	}

	DBUG_RETURN(0);
}

/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_lock_waits
@return	0 on success */
static
int
innodb_lock_waits_init(
/*===================*/
	void*	p)	/*!< in/out: table schema object */
{
	ST_SCHEMA_TABLE*	schema;

	DBUG_ENTER("innodb_lock_waits_init");

	schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = innodb_lock_waits_fields_info;
	schema->fill_table = trx_i_s_common_fill_table;

	DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_lock_waits =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_LOCK_WAITS"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, plugin_author),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB which lock is blocking which"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_lock_waits_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

/*******************************************************************//**
Common function to fill any of the dynamic tables:
INFORMATION_SCHEMA.innodb_trx
INFORMATION_SCHEMA.innodb_locks
INFORMATION_SCHEMA.innodb_lock_waits
@return	0 on success */
static
int
trx_i_s_common_fill_table(
/*======================*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond)	/*!< in: condition (not used) */
{
	const char*		table_name;
	int			ret;
	trx_i_s_cache_t*	cache;

	DBUG_ENTER("trx_i_s_common_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

		DBUG_RETURN(0);
	}

	/* minimize the number of places where global variables are
	referenced */
	cache = trx_i_s_cache;

	/* which table we have to fill? */
	table_name = tables->schema_table_name;
	/* or table_name = tables->schema_table->table_name; */

	RETURN_IF_INNODB_NOT_STARTED(table_name);

	/* update the cache */
	trx_i_s_cache_start_write(cache);
	trx_i_s_possibly_fetch_data_into_cache(cache);
	trx_i_s_cache_end_write(cache);

	if (trx_i_s_cache_is_truncated(cache)) {

		/* XXX show warning to user if possible */
		fprintf(stderr, "Warning: data in %s truncated due to "
			"memory limit of %d bytes\n", table_name,
			TRX_I_S_MEM_LIMIT);
	}

	ret = 0;

	trx_i_s_cache_start_read(cache);

	if (innobase_strcasecmp(table_name, "innodb_trx") == 0) {

		if (fill_innodb_trx_from_cache(
			cache, thd, tables->table) != 0) {

			ret = 1;
		}

	} else if (innobase_strcasecmp(table_name, "innodb_locks") == 0) {

		if (fill_innodb_locks_from_cache(
			cache, thd, tables->table) != 0) {

			ret = 1;
		}

	} else if (innobase_strcasecmp(table_name, "innodb_lock_waits") == 0) {

		if (fill_innodb_lock_waits_from_cache(
			cache, thd, tables->table) != 0) {

			ret = 1;
		}

	} else {

		/* huh! what happened!? */
		fprintf(stderr,
			"InnoDB: trx_i_s_common_fill_table() was "
			"called to fill unknown table: %s.\n"
			"This function only knows how to fill "
			"innodb_trx, innodb_locks and "
			"innodb_lock_waits tables.\n", table_name);

		ret = 1;
	}

	trx_i_s_cache_end_read(cache);

#if 0
	DBUG_RETURN(ret);
#else
	/* if this function returns something else than 0 then a
	deadlock occurs between the mysqld server and mysql client,
	see http://bugs.mysql.com/29900 ; when that bug is resolved
	we can enable the DBUG_RETURN(ret) above */
	ret++;  // silence a gcc46 warning
	DBUG_RETURN(0);
#endif
}

/* Fields of the dynamic table information_schema.innodb_cmp. */
static ST_FIELD_INFO	i_s_cmp_fields_info[] =
{
	{STRUCT_FLD(field_name,		"page_size"),
	 STRUCT_FLD(field_length,	5),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Compressed Page Size"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"compress_ops"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Total Number of Compressions"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"compress_ops_ok"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Total Number of"
					" Successful Compressions"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"compress_time"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Total Duration of Compressions,"
		    " in Seconds"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"uncompress_ops"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Total Number of Decompressions"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"uncompress_time"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Total Duration of Decompressions,"
		    " in Seconds"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};


/*******************************************************************//**
Fill the dynamic table information_schema.innodb_cmp or
innodb_cmp_reset.
@return	0 on success, 1 on failure */
static
int
i_s_cmp_fill_low(
/*=============*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond,	/*!< in: condition (ignored) */
	ibool		reset)	/*!< in: TRUE=reset cumulated counts */
{
	TABLE*	table	= (TABLE *) tables->table;
	int	status	= 0;

	DBUG_ENTER("i_s_cmp_fill_low");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

		DBUG_RETURN(0);
	}

	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);

	for (uint i = 0; i < PAGE_ZIP_NUM_SSIZE - 1; i++) {
		page_zip_stat_t*	zip_stat = &page_zip_stat[i];

		table->field[0]->store(PAGE_ZIP_MIN_SIZE << i);

		/* The cumulated counts are not protected by any
		mutex.  Thus, some operation in page0zip.c could
		increment a counter between the time we read it and
		clear it.  We could introduce mutex protection, but it
		could cause a measureable performance hit in
		page0zip.c. */
		table->field[1]->store(zip_stat->compressed);
		table->field[2]->store(zip_stat->compressed_ok);
		table->field[3]->store(
			(ulong) (zip_stat->compressed_usec / 1000000));
		table->field[4]->store(zip_stat->decompressed);
		table->field[5]->store(
			(ulong) (zip_stat->decompressed_usec / 1000000));

		if (reset) {
			memset(zip_stat, 0, sizeof *zip_stat);
		}

		if (schema_table_store_record(thd, table)) {
			status = 1;
			break;
		}
	}

	DBUG_RETURN(status);
}

/*******************************************************************//**
Fill the dynamic table information_schema.innodb_cmp.
@return	0 on success, 1 on failure */
static
int
i_s_cmp_fill(
/*=========*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond)	/*!< in: condition (ignored) */
{
	return(i_s_cmp_fill_low(thd, tables, cond, FALSE));
}

/*******************************************************************//**
Fill the dynamic table information_schema.innodb_cmp_reset.
@return	0 on success, 1 on failure */
static
int
i_s_cmp_reset_fill(
/*===============*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond)	/*!< in: condition (ignored) */
{
	return(i_s_cmp_fill_low(thd, tables, cond, TRUE));
}

/*******************************************************************//**
Bind the dynamic table information_schema.innodb_cmp.
@return	0 on success */
static
int
i_s_cmp_init(
/*=========*/
	void*	p)	/*!< in/out: table schema object */
{
	DBUG_ENTER("i_s_cmp_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_cmp_fields_info;
	schema->fill_table = i_s_cmp_fill;

	DBUG_RETURN(0);
}

/*******************************************************************//**
Bind the dynamic table information_schema.innodb_cmp_reset.
@return	0 on success */
static
int
i_s_cmp_reset_init(
/*===============*/
	void*	p)	/*!< in/out: table schema object */
{
	DBUG_ENTER("i_s_cmp_reset_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_cmp_fields_info;
	schema->fill_table = i_s_cmp_reset_fill;

	DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_cmp =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_CMP"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, plugin_author),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "Statistics for the InnoDB compression"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_cmp_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_cmp_reset =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_CMP_RESET"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, plugin_author),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "Statistics for the InnoDB compression;"
		   " reset cumulated counts"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_cmp_reset_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

/* Fields of the dynamic table information_schema.innodb_cmpmem. */
static ST_FIELD_INFO	i_s_cmpmem_fields_info[] =
{
	{STRUCT_FLD(field_name,		"page_size"),
	 STRUCT_FLD(field_length,	5),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Buddy Block Size"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"buffer_pool_instance"),
	STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	STRUCT_FLD(value,		0),
	STRUCT_FLD(field_flags,		0),
	STRUCT_FLD(old_name,		"Buffer Pool Id"),
	STRUCT_FLD(open_method,		SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"pages_used"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Currently in Use"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"pages_free"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Currently Available"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"relocation_ops"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Total Number of Relocations"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"relocation_time"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		"Total Duration of Relocations,"
		    			" in Seconds"),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/*******************************************************************//**
Fill the dynamic table information_schema.innodb_cmpmem or
innodb_cmpmem_reset.
@return	0 on success, 1 on failure */
static
int
i_s_cmpmem_fill_low(
/*================*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond,	/*!< in: condition (ignored) */
	ibool		reset)	/*!< in: TRUE=reset cumulated counts */
{
	int		status = 0;
	TABLE*	table	= (TABLE *) tables->table;

	DBUG_ENTER("i_s_cmpmem_fill_low");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

		DBUG_RETURN(0);
	}

	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);

	for (ulint i = 0; i < srv_buf_pool_instances; i++) {
		buf_pool_t*	buf_pool;

		status	= 0;

		buf_pool = buf_pool_from_array(i);

		//buf_pool_mutex_enter(buf_pool);
		mutex_enter(&buf_pool->zip_free_mutex);

		for (uint x = 0; x <= BUF_BUDDY_SIZES; x++) {
			buf_buddy_stat_t*	buddy_stat;

			buddy_stat = &buf_pool->buddy_stat[x];

			table->field[0]->store(BUF_BUDDY_LOW << x);
			table->field[1]->store(i);
			table->field[2]->store(buddy_stat->used);
			table->field[3]->store(UNIV_LIKELY(x < BUF_BUDDY_SIZES)
				? UT_LIST_GET_LEN(buf_pool->zip_free[x])
				: 0);
			table->field[4]->store((longlong)
			buddy_stat->relocated, true);
			table->field[5]->store(
				(ulong) (buddy_stat->relocated_usec / 1000000));

			if (reset) {
				/* This is protected by buf_pool->mutex. */
				buddy_stat->relocated = 0;
				buddy_stat->relocated_usec = 0;
			}

			if (schema_table_store_record(thd, table)) {
				status = 1;
				break;
			}
		}

		//buf_pool_mutex_exit(buf_pool);
		mutex_exit(&buf_pool->zip_free_mutex);

		if (status) {
			break;
		}
	}

	DBUG_RETURN(status);
}

/*******************************************************************//**
Fill the dynamic table information_schema.innodb_cmpmem.
@return	0 on success, 1 on failure */
static
int
i_s_cmpmem_fill(
/*============*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond)	/*!< in: condition (ignored) */
{
	return(i_s_cmpmem_fill_low(thd, tables, cond, FALSE));
}

/*******************************************************************//**
Fill the dynamic table information_schema.innodb_cmpmem_reset.
@return	0 on success, 1 on failure */
static
int
i_s_cmpmem_reset_fill(
/*==================*/
	THD*		thd,	/*!< in: thread */
	TABLE_LIST*	tables,	/*!< in/out: tables to fill */
	COND*		cond)	/*!< in: condition (ignored) */
{
	return(i_s_cmpmem_fill_low(thd, tables, cond, TRUE));
}

/*******************************************************************//**
Bind the dynamic table information_schema.innodb_cmpmem.
@return	0 on success */
static
int
i_s_cmpmem_init(
/*============*/
	void*	p)	/*!< in/out: table schema object */
{
	DBUG_ENTER("i_s_cmpmem_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_cmpmem_fields_info;
	schema->fill_table = i_s_cmpmem_fill;

	DBUG_RETURN(0);
}

/*******************************************************************//**
Bind the dynamic table information_schema.innodb_cmpmem_reset.
@return	0 on success */
static
int
i_s_cmpmem_reset_init(
/*==================*/
	void*	p)	/*!< in/out: table schema object */
{
	DBUG_ENTER("i_s_cmpmem_reset_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_cmpmem_fields_info;
	schema->fill_table = i_s_cmpmem_reset_fill;

	DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_cmpmem =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_CMPMEM"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, plugin_author),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "Statistics for the InnoDB compressed buffer pool"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_cmpmem_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_cmpmem_reset =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_CMPMEM_RESET"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, plugin_author),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "Statistics for the InnoDB compressed buffer pool;"
		   " reset cumulated counts"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_cmpmem_reset_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

/*******************************************************************//**
Unbind a dynamic INFORMATION_SCHEMA table.
@return	0 on success */
static
int
i_s_common_deinit(
/*==============*/
	void*	p)	/*!< in/out: table schema object */
{
	DBUG_ENTER("i_s_common_deinit");

	/* Do nothing */

	DBUG_RETURN(0);
}

/* Fields of the dynamic table INFORMATION_SCHEMA.SYS_TABLES */
static ST_FIELD_INFO    innodb_sys_tables_fields_info[] =
{
#define SYS_TABLE_ID		0
	{STRUCT_FLD(field_name,		"TABLE_ID"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLE_SCHEMA	1
	{STRUCT_FLD(field_name,		"SCHEMA"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLE_NAME		2
	{STRUCT_FLD(field_name,		"NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLE_FLAG		3
	{STRUCT_FLD(field_name,		"FLAG"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLE_NUM_COLUMN	4
	{STRUCT_FLD(field_name,		"N_COLS"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLE_SPACE		5
	{STRUCT_FLD(field_name,		"SPACE"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/**********************************************************************//**
Populate information_schema.innodb_sys_tables table with information
from SYS_TABLES.
@return	0 on success */
static
int
i_s_dict_fill_sys_tables(
/*=====================*/
	THD*		thd,		/*!< in: thread */
	dict_table_t*	table,		/*!< in: table */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;
	char		buf[NAME_LEN * 2 + 2];
	char*		ptr;

	DBUG_ENTER("i_s_dict_fill_sys_tables");

	fields = table_to_fill->field;

	OK(fields[SYS_TABLE_ID]->store(longlong(table->id), TRUE));

	strncpy(buf, table->name, NAME_LEN * 2 + 2);
	ptr = strchr(buf, '/');
	if (ptr) {
		*ptr = '\0';
		++ptr;

		OK(field_store_string(fields[SYS_TABLE_SCHEMA], buf));
		OK(field_store_string(fields[SYS_TABLE_NAME], ptr));
	} else {
		fields[SYS_TABLE_SCHEMA]->set_null();
		OK(field_store_string(fields[SYS_TABLE_NAME], buf));
	}

	OK(fields[SYS_TABLE_FLAG]->store(table->flags));

	OK(fields[SYS_TABLE_NUM_COLUMN]->store(table->n_cols));

	OK(fields[SYS_TABLE_SPACE]->store(table->space));

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to go through each record in SYS_TABLES table, and fill the
information_schema.innodb_sys_tables table with related table information
@return 0 on success */
static
int
i_s_sys_tables_fill_table(
/*======================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t	pcur;
	const rec_t*	rec;
	mem_heap_t*	heap;
	mtr_t		mtr;

	DBUG_ENTER("i_s_sys_tables_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&(dict_sys->mutex));
        mtr_start(&mtr);

	rec = dict_startscan_system(&pcur, &mtr, SYS_TABLES);

	while (rec) {
		const char*	err_msg;
		dict_table_t*	table_rec;

		/* Create and populate a dict_table_t structure with
		information from SYS_TABLES row */
		err_msg = dict_process_sys_tables_rec(
			heap, rec, &table_rec, DICT_TABLE_LOAD_FROM_RECORD);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_tables(thd, table_rec, tables->table);
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		/* Since dict_process_sys_tables_rec() is called with
		DICT_TABLE_LOAD_FROM_RECORD, the table_rec is created in
		dict_process_sys_tables_rec(), we will need to free it */
		if (table_rec) {
			dict_mem_table_free(table_rec);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mutex_enter(&dict_sys->mutex);
		mtr_start(&mtr);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}

/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_tables
@return 0 on success */
static
int
innodb_sys_tables_init(
/*===================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_tables_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sys_tables_fields_info;
        schema->fill_table = i_s_sys_tables_fill_table;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_tables =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_TABLES"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB SYS_TABLES"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_tables_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

/* Fields of the dynamic table INFORMATION_SCHEMA.SYS_TABLESTATS */
static ST_FIELD_INFO    innodb_sys_tablestats_fields_info[] =
{
#define SYS_TABLESTATS_ID		0
	{STRUCT_FLD(field_name,		"TABLE_ID"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_SCHEMA		1
	{STRUCT_FLD(field_name,		"SCHEMA"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_NAME		2
	{STRUCT_FLD(field_name,		"NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_INIT		3
	{STRUCT_FLD(field_name,		"STATS_INITIALIZED"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_NROW		4
	{STRUCT_FLD(field_name,		"NUM_ROWS"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_CLUST_SIZE	5
	{STRUCT_FLD(field_name,		"CLUST_INDEX_SIZE"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_INDEX_SIZE	6
	{STRUCT_FLD(field_name,		"OTHER_INDEX_SIZE"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_MODIFIED		7
	{STRUCT_FLD(field_name,		"MODIFIED_COUNTER"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_AUTONINC		8
	{STRUCT_FLD(field_name,		"AUTOINC"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_TABLESTATS_MYSQL_OPEN_HANDLE	9
	{STRUCT_FLD(field_name,		"MYSQL_HANDLES_OPENED"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/**********************************************************************//**
Populate information_schema.innodb_sys_tablestats table with information
from SYS_TABLES.
@return	0 on success */
static
int
i_s_dict_fill_sys_tablestats(
/*=========================*/
	THD*		thd,		/*!< in: thread */
	dict_table_t*	table,		/*!< in: table */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;
	char		buf[NAME_LEN * 2 + 2];
	char*		ptr;

	DBUG_ENTER("i_s_dict_fill_sys_tablestats");

	fields = table_to_fill->field;

	OK(fields[SYS_TABLESTATS_ID]->store(longlong(table->id), TRUE));

	strncpy(buf, table->name, NAME_LEN * 2 + 2);
	ptr = strchr(buf, '/');
	if (ptr) {
		*ptr = '\0';
		++ptr;

		OK(field_store_string(fields[SYS_TABLESTATS_SCHEMA], buf));
		OK(field_store_string(fields[SYS_TABLESTATS_NAME], ptr));
	} else {
		fields[SYS_TABLESTATS_SCHEMA]->set_null();
		OK(field_store_string(fields[SYS_TABLESTATS_NAME], buf));
	}

	if (table->stat_initialized) {
		OK(field_store_string(fields[SYS_TABLESTATS_INIT],
				      "Initialized"));
	} else {
		OK(field_store_string(fields[SYS_TABLESTATS_INIT],
				      "Uninitialized"));
	}

	OK(fields[SYS_TABLESTATS_NROW]->store(table->stat_n_rows, TRUE));

	OK(fields[SYS_TABLESTATS_CLUST_SIZE]->store(
		table->stat_clustered_index_size));

	OK(fields[SYS_TABLESTATS_INDEX_SIZE]->store(
		table->stat_sum_of_other_index_sizes));

	OK(fields[SYS_TABLESTATS_MODIFIED]->store(
		table->stat_modified_counter));

	OK(fields[SYS_TABLESTATS_AUTONINC]->store(table->autoinc, TRUE));

	OK(fields[SYS_TABLESTATS_MYSQL_OPEN_HANDLE]->store(
		table->n_mysql_handles_opened));

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to go through each record in SYS_TABLES table, and fill the
information_schema.innodb_sys_tablestats table with table statistics
related information
@return 0 on success */
static
int
i_s_sys_tables_fill_table_stats(
/*============================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t	pcur;
	const rec_t*	rec;
	mem_heap_t*	heap;
	mtr_t		mtr;

	DBUG_ENTER("i_s_sys_tables_fill_table_stats");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&dict_sys->mutex);
        mtr_start(&mtr);

	rec = dict_startscan_system(&pcur, &mtr, SYS_TABLES);

	while (rec) {
		const char*	err_msg;
		dict_table_t*	table_rec;

		/* Fetch the dict_table_t structure corresponding to
		this SYS_TABLES record */
		err_msg = dict_process_sys_tables_rec(
			heap, rec, &table_rec, DICT_TABLE_LOAD_FROM_CACHE);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_tablestats(thd, table_rec,
						     tables->table);
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mutex_enter(&dict_sys->mutex);
		mtr_start(&mtr);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}

/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_tablestats
@return 0 on success */
static
int
innodb_sys_tablestats_init(
/*=======================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_tablestats_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sys_tablestats_fields_info;
        schema->fill_table = i_s_sys_tables_fill_table_stats;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_tablestats =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_TABLESTATS"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB SYS_TABLESTATS"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_tablestats_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

/* Fields of the dynamic table INFORMATION_SCHEMA.SYS_INDEXES */
static ST_FIELD_INFO    innodb_sysindex_fields_info[] =
{
#define SYS_INDEX_ID		0
	{STRUCT_FLD(field_name,		"INDEX_ID"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_INDEX_NAME		1
	{STRUCT_FLD(field_name,		"NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_INDEX_TABLE_ID	2
	{STRUCT_FLD(field_name,		"TABLE_ID"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_INDEX_TYPE		3
	{STRUCT_FLD(field_name,		"TYPE"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_INDEX_NUM_FIELDS	4
	{STRUCT_FLD(field_name,		"N_FIELDS"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_INDEX_PAGE_NO	5
	{STRUCT_FLD(field_name,		"PAGE_NO"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_INDEX_SPACE		6
	{STRUCT_FLD(field_name,		"SPACE"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/**********************************************************************//**
Function to populate the information_schema.innodb_sys_indexes table with
collected index information
@return 0 on success */
static
int
i_s_dict_fill_sys_indexes(
/*======================*/
	THD*		thd,		/*!< in: thread */
	table_id_t	table_id,	/*!< in: table id */
	dict_index_t*	index,		/*!< in: populated dict_index_t
					struct with index info */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;

	DBUG_ENTER("i_s_dict_fill_sys_indexes");

	fields = table_to_fill->field;

	OK(fields[SYS_INDEX_ID]->store(longlong(index->id), TRUE));

	OK(field_store_string(fields[SYS_INDEX_NAME], index->name));

	OK(fields[SYS_INDEX_TABLE_ID]->store(longlong(table_id), TRUE));

	OK(fields[SYS_INDEX_TYPE]->store(index->type));

	OK(fields[SYS_INDEX_NUM_FIELDS]->store(index->n_fields));

	OK(fields[SYS_INDEX_PAGE_NO]->store(index->page));

	OK(fields[SYS_INDEX_SPACE]->store(index->space));

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to go through each record in SYS_INDEXES table, and fill the
information_schema.innodb_sys_indexes table with related index information
@return 0 on success */
static
int
i_s_sys_indexes_fill_table(
/*=======================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t		pcur;
	const rec_t*		rec;
	mem_heap_t*		heap;
	mtr_t			mtr;

	DBUG_ENTER("i_s_sys_indexes_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&dict_sys->mutex);
        mtr_start(&mtr);

	/* Start scan the SYS_INDEXES table */
	rec = dict_startscan_system(&pcur, &mtr, SYS_INDEXES);

	/* Process each record in the table */
	while (rec) {
		const char*	err_msg;;
		table_id_t	table_id;
		dict_index_t	index_rec;

		/* Populate a dict_index_t structure with information from
		a SYS_INDEXES row */
		err_msg = dict_process_sys_indexes_rec(heap, rec, &index_rec,
						       &table_id);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_indexes(thd, table_id, &index_rec,
						 tables->table);
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mutex_enter(&dict_sys->mutex);
		mtr_start(&mtr);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_indexes
@return 0 on success */
static
int
innodb_sys_indexes_init(
/*====================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_index_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sysindex_fields_info;
        schema->fill_table = i_s_sys_indexes_fill_table;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_indexes =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_INDEXES"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB SYS_INDEXES"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_indexes_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

/* Fields of the dynamic table INFORMATION_SCHEMA.SYS_COLUMNS */
static ST_FIELD_INFO    innodb_sys_columns_fields_info[] =
{
#define SYS_COLUMN_TABLE_ID		0
	{STRUCT_FLD(field_name,		"TABLE_ID"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_COLUMN_NAME		1
	{STRUCT_FLD(field_name,		"NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_COLUMN_POSITION	2
	{STRUCT_FLD(field_name,		"POS"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_COLUMN_MTYPE		3
	{STRUCT_FLD(field_name,		"MTYPE"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_COLUMN__PRTYPE	4
	{STRUCT_FLD(field_name,		"PRTYPE"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_COLUMN_COLUMN_LEN	5
	{STRUCT_FLD(field_name,		"LEN"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/**********************************************************************//**
Function to populate the information_schema.innodb_sys_columns with
related column information
@return 0 on success */
static
int
i_s_dict_fill_sys_columns(
/*======================*/
	THD*		thd,		/*!< in: thread */
	table_id_t	table_id,	/*!< in: table ID */
	const char*	col_name,	/*!< in: column name */
	dict_col_t*	column,		/*!< in: dict_col_t struct holding
					more column information */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;

	DBUG_ENTER("i_s_dict_fill_sys_columns");

	fields = table_to_fill->field;

	OK(fields[SYS_COLUMN_TABLE_ID]->store(longlong(table_id), TRUE));

	OK(field_store_string(fields[SYS_COLUMN_NAME], col_name));

	OK(fields[SYS_COLUMN_POSITION]->store(column->ind));

	OK(fields[SYS_COLUMN_MTYPE]->store(column->mtype));

	OK(fields[SYS_COLUMN__PRTYPE]->store(column->prtype));

	OK(fields[SYS_COLUMN_COLUMN_LEN]->store(column->len));

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to fill information_schema.innodb_sys_columns with information
collected by scanning SYS_COLUMNS table.
@return 0 on success */
static
int
i_s_sys_columns_fill_table(
/*=======================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t	pcur;
	const rec_t*	rec;
	const char*	col_name;
	mem_heap_t*	heap;
	mtr_t		mtr;

	DBUG_ENTER("i_s_sys_columns_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&dict_sys->mutex);
        mtr_start(&mtr);

	rec = dict_startscan_system(&pcur, &mtr, SYS_COLUMNS);

	while (rec) {
		const char*	err_msg;
		dict_col_t	column_rec;
		table_id_t	table_id;

		/* populate a dict_col_t structure with information from
		a SYS_COLUMNS row */
		err_msg = dict_process_sys_columns_rec(heap, rec, &column_rec,
						       &table_id, &col_name);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_columns(thd, table_id, col_name,
						 &column_rec,
						 tables->table);
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mutex_enter(&dict_sys->mutex);
		mtr_start(&mtr);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_columns
@return 0 on success */
static
int
innodb_sys_columns_init(
/*====================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_columns_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sys_columns_fields_info;
        schema->fill_table = i_s_sys_columns_fill_table;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_columns =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_COLUMNS"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB SYS_COLUMNS"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_columns_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};
/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_sys_fields */
static ST_FIELD_INFO    innodb_sys_fields_fields_info[] =
{
#define SYS_FIELD_INDEX_ID	0
	{STRUCT_FLD(field_name,		"INDEX_ID"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FIELD_NAME		1
	{STRUCT_FLD(field_name,		"NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FIELD_POS		2
	{STRUCT_FLD(field_name,		"POS"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/**********************************************************************//**
Function to fill information_schema.innodb_sys_fields with information
collected by scanning SYS_FIELDS table.
@return 0 on success */
static
int
i_s_dict_fill_sys_fields(
/*=====================*/
	THD*		thd,		/*!< in: thread */
	index_id_t	index_id,	/*!< in: index id for the field */
	dict_field_t*	field,		/*!< in: table */
	ulint		pos,		/*!< in: Field position */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;

	DBUG_ENTER("i_s_dict_fill_sys_fields");

	fields = table_to_fill->field;

	OK(fields[SYS_FIELD_INDEX_ID]->store(longlong(index_id), TRUE));

	OK(field_store_string(fields[SYS_FIELD_NAME], field->name));

	OK(fields[SYS_FIELD_POS]->store(pos));

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to go through each record in SYS_FIELDS table, and fill the
information_schema.innodb_sys_fields table with related index field
information
@return 0 on success */
static
int
i_s_sys_fields_fill_table(
/*======================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t	pcur;
	const rec_t*	rec;
	mem_heap_t*	heap;
	index_id_t	last_id;
	mtr_t		mtr;

	DBUG_ENTER("i_s_sys_fields_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&dict_sys->mutex);
        mtr_start(&mtr);

	/* will save last index id so that we know whether we move to
	the next index. This is used to calculate prefix length */
	last_id = 0;

	rec = dict_startscan_system(&pcur, &mtr, SYS_FIELDS);

	while (rec) {
		ulint		pos;
		const char*	err_msg;
		index_id_t	index_id;
		dict_field_t	field_rec;

		/* Populate a dict_field_t structure with information from
		a SYS_FIELDS row */
		err_msg = dict_process_sys_fields_rec(heap, rec, &field_rec,
						      &pos, &index_id, last_id);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_fields(thd, index_id, &field_rec,
						 pos, tables->table);
			last_id = index_id;
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mutex_enter(&dict_sys->mutex);
		mtr_start(&mtr);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_fields
@return 0 on success */
static
int
innodb_sys_fields_init(
/*===================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_field_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sys_fields_fields_info;
        schema->fill_table = i_s_sys_fields_fill_table;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_fields =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_FIELDS"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB SYS_FIELDS"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_fields_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_sys_foreign */
static ST_FIELD_INFO    innodb_sys_foreign_fields_info[] =
{
#define SYS_FOREIGN_ID		0
	{STRUCT_FLD(field_name,		"ID"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FOREIGN_FOR_NAME	1
	{STRUCT_FLD(field_name,		"FOR_NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FOREIGN_REF_NAME	2
	{STRUCT_FLD(field_name,		"REF_NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FOREIGN_NUM_COL	3
	{STRUCT_FLD(field_name,		"N_COLS"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FOREIGN_TYPE	4
	{STRUCT_FLD(field_name,		"TYPE"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/**********************************************************************//**
Function to fill information_schema.innodb_sys_foreign with information
collected by scanning SYS_FOREIGN table.
@return 0 on success */
static
int
i_s_dict_fill_sys_foreign(
/*======================*/
	THD*		thd,		/*!< in: thread */
	dict_foreign_t*	foreign,	/*!< in: table */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;

	DBUG_ENTER("i_s_dict_fill_sys_foreign");

	fields = table_to_fill->field;

	OK(field_store_string(fields[SYS_FOREIGN_ID], foreign->id));

	OK(field_store_string(fields[SYS_FOREIGN_FOR_NAME],
			      foreign->foreign_table_name));

	OK(field_store_string(fields[SYS_FOREIGN_REF_NAME],
			      foreign->referenced_table_name));

	OK(fields[SYS_FOREIGN_NUM_COL]->store(foreign->n_fields));

	OK(fields[SYS_FOREIGN_TYPE]->store(foreign->type));

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to populate INFORMATION_SCHEMA.innodb_sys_foreign table. Loop
through each record in SYS_FOREIGN, and extract the foreign key
information.
@return 0 on success */
static
int
i_s_sys_foreign_fill_table(
/*=======================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t	pcur;
	const rec_t*	rec;
	mem_heap_t*	heap;
	mtr_t		mtr;

	DBUG_ENTER("i_s_sys_foreign_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&dict_sys->mutex);
        mtr_start(&mtr);

	rec = dict_startscan_system(&pcur, &mtr, SYS_FOREIGN);

	while (rec) {
		const char*	err_msg;
		dict_foreign_t	foreign_rec;

		/* Populate a dict_foreign_t structure with information from
		a SYS_FOREIGN row */
		err_msg = dict_process_sys_foreign_rec(heap, rec, &foreign_rec);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_foreign(thd, &foreign_rec,
						 tables->table);
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mtr_start(&mtr);
		mutex_enter(&dict_sys->mutex);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_foreign
@return 0 on success */
static
int
innodb_sys_foreign_init(
/*====================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_foreign_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sys_foreign_fields_info;
        schema->fill_table = i_s_sys_foreign_fill_table;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_foreign =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_FOREIGN"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB SYS_FOREIGN"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_foreign_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};
/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_sys_foreign_cols */
static ST_FIELD_INFO    innodb_sys_foreign_cols_fields_info[] =
{
#define SYS_FOREIGN_COL_ID		0
	{STRUCT_FLD(field_name,		"ID"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FOREIGN_COL_FOR_NAME	1
	{STRUCT_FLD(field_name,		"FOR_COL_NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FOREIGN_COL_REF_NAME	2
	{STRUCT_FLD(field_name,		"REF_COL_NAME"),
	 STRUCT_FLD(field_length,	NAME_LEN + 1),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_FOREIGN_COL_POS		3
	{STRUCT_FLD(field_name,		"POS"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/**********************************************************************//**
Function to fill information_schema.innodb_sys_foreign_cols with information
collected by scanning SYS_FOREIGN_COLS table.
@return 0 on success */
static
int
i_s_dict_fill_sys_foreign_cols(
/*==========================*/
	THD*		thd,		/*!< in: thread */
	const char*	name,		/*!< in: foreign key constraint name */
	const char*	for_col_name,	/*!< in: referencing column name*/
	const char*	ref_col_name,	/*!< in: referenced column
					name */
	ulint		pos,		/*!< in: column position */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;

	DBUG_ENTER("i_s_dict_fill_sys_foreign_cols");

	fields = table_to_fill->field;

	OK(field_store_string(fields[SYS_FOREIGN_COL_ID], name));

	OK(field_store_string(fields[SYS_FOREIGN_COL_FOR_NAME], for_col_name));

	OK(field_store_string(fields[SYS_FOREIGN_COL_REF_NAME], ref_col_name));

	OK(fields[SYS_FOREIGN_COL_POS]->store(pos));

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to populate INFORMATION_SCHEMA.innodb_sys_foreign_cols table. Loop
through each record in SYS_FOREIGN_COLS, and extract the foreign key column
information and fill the INFORMATION_SCHEMA.innodb_sys_foreign_cols table.
@return 0 on success */
static
int
i_s_sys_foreign_cols_fill_table(
/*============================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t	pcur;
	const rec_t*	rec;
	mem_heap_t*	heap;
	mtr_t		mtr;

	DBUG_ENTER("i_s_sys_foreign_cols_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {
                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&dict_sys->mutex);
        mtr_start(&mtr);

	rec = dict_startscan_system(&pcur, &mtr, SYS_FOREIGN_COLS);

	while (rec) {
		const char*	err_msg;
		const char*	name;
		const char*	for_col_name;
		const char*	ref_col_name;
		ulint		pos;

		/* Extract necessary information from a SYS_FOREIGN_COLS row */
		err_msg = dict_process_sys_foreign_col_rec(
			heap, rec, &name, &for_col_name, &ref_col_name, &pos);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_foreign_cols(
				thd, name, for_col_name, ref_col_name, pos,
				tables->table);
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mutex_enter(&dict_sys->mutex);
		mtr_start(&mtr);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_foreign_cols
@return 0 on success */
static
int
innodb_sys_foreign_cols_init(
/*========================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_foreign_cols_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sys_foreign_cols_fields_info;
        schema->fill_table = i_s_sys_foreign_cols_fill_table;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_foreign_cols =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_FOREIGN_COLS"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB SYS_FOREIGN_COLS"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_foreign_cols_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_sys_stats */
static ST_FIELD_INFO	innodb_sys_stats_fields_info[] =
{
#define SYS_STATS_INDEX_ID	0
	{STRUCT_FLD(field_name,		"INDEX_ID"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_STATS_KEY_COLS	1
	{STRUCT_FLD(field_name,		"KEY_COLS"),
	 STRUCT_FLD(field_length,	MY_INT32_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_STATS_DIFF_VALS	2
	{STRUCT_FLD(field_name,		"DIFF_VALS"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

#define SYS_STATS_NON_NULL_VALS	3
	{STRUCT_FLD(field_name,		"NON_NULL_VALS"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED | MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};
/**********************************************************************//**
Function to fill information_schema.innodb_sys_stats
@return 0 on success */
static
int
i_s_dict_fill_sys_stats(
/*====================*/
	THD*		thd,		/*!< in: thread */
	index_id_t	index_id,	/*!< in: INDEX_ID */
	ulint		key_cols,	/*!< in: KEY_COLS */
	ib_uint64_t	diff_vals,	/*!< in: DIFF_VALS */
	ib_uint64_t	non_null_vals,	/*!< in: NON_NULL_VALS */
	TABLE*		table_to_fill)  /*!< in/out: fill this table */
{
	Field**		fields;

	DBUG_ENTER("i_s_dict_fill_sys_stats");

	fields = table_to_fill->field;

	OK(fields[SYS_STATS_INDEX_ID]->store(longlong(index_id), TRUE));

	OK(fields[SYS_STATS_KEY_COLS]->store(key_cols));

	OK(fields[SYS_STATS_DIFF_VALS]->store(longlong(diff_vals), TRUE));

	if (non_null_vals == ((ib_uint64_t)(-1))) {
		fields[SYS_STATS_NON_NULL_VALS]->set_null();
	} else {
		OK(fields[SYS_STATS_NON_NULL_VALS]->store(longlong(non_null_vals), TRUE));
		fields[SYS_STATS_NON_NULL_VALS]->set_notnull();
	}

	OK(schema_table_store_record(thd, table_to_fill));

	DBUG_RETURN(0);
}
/*******************************************************************//**
Function to populate INFORMATION_SCHEMA.innodb_sys_stats table.
@return 0 on success */
static
int
i_s_sys_stats_fill_table(
/*=====================*/
	THD*		thd,    /*!< in: thread */
	TABLE_LIST*	tables, /*!< in/out: tables to fill */
	COND*		cond)   /*!< in: condition (not used) */
{
        btr_pcur_t	pcur;
	const rec_t*	rec;
	mem_heap_t*	heap;
	mtr_t		mtr;

	DBUG_ENTER("i_s_sys_stats_fill_table");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {
                DBUG_RETURN(0);
	}

        heap = mem_heap_create(1000);
        mutex_enter(&dict_sys->mutex);
        mtr_start(&mtr);

	rec = dict_startscan_system(&pcur, &mtr, SYS_STATS);

	while (rec) {
		const char*	err_msg;
		index_id_t	index_id;
		ulint		key_cols;
		ib_uint64_t	diff_vals;
		ib_uint64_t	non_null_vals;

		/* Extract necessary information from a SYS_FOREIGN_COLS row */
		err_msg = dict_process_sys_stats_rec(
			heap, rec, &index_id, &key_cols, &diff_vals, &non_null_vals);

		mtr_commit(&mtr);
		mutex_exit(&dict_sys->mutex);

		if (!err_msg) {
			i_s_dict_fill_sys_stats(
				thd, index_id, key_cols, diff_vals, non_null_vals,
				tables->table);
		} else {
			push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
					    ER_CANT_FIND_SYSTEM_REC,
					    err_msg);
		}

		mem_heap_empty(heap);

		/* Get the next record */
		mutex_enter(&dict_sys->mutex);
		mtr_start(&mtr);
		rec = dict_getnext_system(&pcur, &mtr);
	}

	mtr_commit(&mtr);
	mutex_exit(&dict_sys->mutex);
	mem_heap_free(heap);

	DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_sys_stats
@return 0 on success */
static
int
innodb_sys_stats_init(
/*========================*/
        void*   p)      /*!< in/out: table schema object */
{
        ST_SCHEMA_TABLE*        schema;

        DBUG_ENTER("innodb_sys_stats_init");

        schema = (ST_SCHEMA_TABLE*) p;

        schema->fields_info = innodb_sys_stats_fields_info;
        schema->fill_table = i_s_sys_stats_fill_table;

        DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_sys_stats =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_SYS_STATS"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "XtraDB SYS_STATS table"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, innodb_sys_stats_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, INNODB_VERSION_SHORT),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

/***********************************************************************
*/
static ST_FIELD_INFO	i_s_innodb_rseg_fields_info[] =
{
	{STRUCT_FLD(field_name,		"rseg_id"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"space_id"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"zip_size"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"page_no"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"max_size"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"curr_size"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

static
int
i_s_innodb_rseg_fill(
/*=================*/
	THD*		thd,	/* in: thread */
	TABLE_LIST*	tables,	/* in/out: tables to fill */
	COND*		cond)	/* in: condition (ignored) */
{
	TABLE*	table	= (TABLE *) tables->table;
	int	status	= 0;
	trx_rseg_t*	rseg;

	DBUG_ENTER("i_s_innodb_rseg_fill");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

		DBUG_RETURN(0);
	}

	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);

	rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list);

	while (rseg) {
		table->field[0]->store(rseg->id);
		table->field[1]->store(rseg->space);
		table->field[2]->store(rseg->zip_size);
		table->field[3]->store(rseg->page_no);
		table->field[4]->store(rseg->max_size);
		table->field[5]->store(rseg->curr_size);

		if (schema_table_store_record(thd, table)) {
			status = 1;
			break;
		}

		rseg = UT_LIST_GET_NEXT(rseg_list, rseg);
	}

	DBUG_RETURN(status);
}

static
int
i_s_innodb_rseg_init(
/*=================*/
			/* out: 0 on success */
	void*	p)	/* in/out: table schema object */
{
	DBUG_ENTER("i_s_innodb_rseg_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_innodb_rseg_fields_info;
	schema->fill_table = i_s_innodb_rseg_fill;

	DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_rseg =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_RSEG"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB rollback segment information"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_innodb_rseg_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, 0x0100 /* 1.0 */),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* Plugin flags */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL),
};

/***********************************************************************
*/
static ST_FIELD_INFO	i_s_innodb_table_stats_info[] =
{
	{STRUCT_FLD(field_name,		"table_schema"),
	 STRUCT_FLD(field_length,	NAME_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"table_name"),
	 STRUCT_FLD(field_length,	NAME_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"rows"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"clust_size"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"other_size"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"modified"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

static ST_FIELD_INFO	i_s_innodb_index_stats_info[] =
{
	{STRUCT_FLD(field_name,		"table_schema"),
	 STRUCT_FLD(field_length,	NAME_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"table_name"),
	 STRUCT_FLD(field_length,	NAME_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"index_name"),
	 STRUCT_FLD(field_length,	NAME_LEN),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"fields"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"rows_per_key"),
	 STRUCT_FLD(field_length,	256),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"index_total_pages"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"index_leaf_pages"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

static
int
i_s_innodb_table_stats_fill(
/*========================*/
	THD*		thd,
	TABLE_LIST*	tables,
	COND*		cond)
{
	TABLE*	i_s_table	= (TABLE *) tables->table;
	int	status	= 0;
	dict_table_t*	table;

	DBUG_ENTER("i_s_innodb_table_stats_fill");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {
		DBUG_RETURN(0);
	}

	mutex_enter(&(dict_sys->mutex));

	table = UT_LIST_GET_FIRST(dict_sys->table_LRU);

	while (table) {
		char	buf[NAME_LEN * 2 + 2];
		char*	ptr;

		if (table->stat_clustered_index_size == 0) {
			table = UT_LIST_GET_NEXT(table_LRU, table);
			continue;
		}

		buf[NAME_LEN * 2 + 1] = 0;
		strncpy(buf, table->name, NAME_LEN * 2 + 1);
		ptr = strchr(buf, '/');
		if (ptr) {
			*ptr = '\0';
			++ptr;
		} else {
			ptr = buf;
		}

		field_store_string(i_s_table->field[0], buf);
		field_store_string(i_s_table->field[1], ptr);
		i_s_table->field[2]->store(table->stat_n_rows);
		i_s_table->field[3]->store(table->stat_clustered_index_size);
		i_s_table->field[4]->store(table->stat_sum_of_other_index_sizes);
		i_s_table->field[5]->store(table->stat_modified_counter);

		if (schema_table_store_record(thd, i_s_table)) {
			status = 1;
			break;
		}

		table = UT_LIST_GET_NEXT(table_LRU, table);
	}

	mutex_exit(&(dict_sys->mutex));

	DBUG_RETURN(status);
}

static
int
i_s_innodb_index_stats_fill(
/*========================*/
	THD*		thd,
	TABLE_LIST*	tables,
	COND*		cond)
{
	TABLE*	i_s_table	= (TABLE *) tables->table;
	int	status	= 0;
	dict_table_t*	table;
	dict_index_t*	index;

	DBUG_ENTER("i_s_innodb_index_stats_fill");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {
		DBUG_RETURN(0);
	}

	mutex_enter(&(dict_sys->mutex));

	table = UT_LIST_GET_FIRST(dict_sys->table_LRU);

	while (table) {
		if (table->stat_clustered_index_size == 0) {
			table = UT_LIST_GET_NEXT(table_LRU, table);
			continue;
		}

		ib_int64_t	n_rows = table->stat_n_rows;

		if (n_rows < 0) {
			n_rows = 0;
		}

		index = dict_table_get_first_index(table);

		while (index) {
			char	buff[256+1];
			char	row_per_keys[256+1];
			char	buf[NAME_LEN * 2 + 2];
			char*	ptr;
			ulint	i;

			buf[NAME_LEN * 2 + 1] = 0;
			strncpy(buf, table->name, NAME_LEN * 2 + 1);
			ptr = strchr(buf, '/');
			if (ptr) {
				*ptr = '\0';
				++ptr;
			} else {
				ptr = buf;
			}

			field_store_string(i_s_table->field[0], buf);
			field_store_string(i_s_table->field[1], ptr);
			field_store_string(i_s_table->field[2], index->name);
			i_s_table->field[3]->store(index->n_uniq);

			row_per_keys[0] = '\0';

			/* It is remained optimistic operation still for now */
			//dict_index_stat_mutex_enter(index);
			if (index->stat_n_diff_key_vals) {
				for (i = 1; i <= index->n_uniq; i++) {
					ib_int64_t	rec_per_key;
					if (index->stat_n_diff_key_vals[i]) {
						rec_per_key = n_rows / index->stat_n_diff_key_vals[i];
					} else {
						rec_per_key = n_rows;
					}
					ut_snprintf(buff, 256, (i == index->n_uniq)?"%llu":"%llu, ",
						 rec_per_key);
					strncat(row_per_keys, buff, 256 - strlen(row_per_keys));
				}
			}
			//dict_index_stat_mutex_exit(index);

			field_store_string(i_s_table->field[4], row_per_keys);

			i_s_table->field[5]->store(index->stat_index_size);
			i_s_table->field[6]->store(index->stat_n_leaf_pages);

			if (schema_table_store_record(thd, i_s_table)) {
				status = 1;
				break;
			}

			index = dict_table_get_next_index(index);
		}

		if (status == 1) {
			break;
		}

		table = UT_LIST_GET_NEXT(table_LRU, table);
	}

	mutex_exit(&(dict_sys->mutex));

	DBUG_RETURN(status);
}

static
int
i_s_innodb_table_stats_init(
/*========================*/
	void*   p)
{
	DBUG_ENTER("i_s_innodb_table_stats_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_innodb_table_stats_info;
	schema->fill_table = i_s_innodb_table_stats_fill;

	DBUG_RETURN(0);
}

static
int
i_s_innodb_index_stats_init(
/*========================*/
	void*	p)
{
	DBUG_ENTER("i_s_innodb_index_stats_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_innodb_index_stats_info;
	schema->fill_table = i_s_innodb_index_stats_fill;

	DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_table_stats =
{
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
	STRUCT_FLD(info, &i_s_info),
	STRUCT_FLD(name, "INNODB_TABLE_STATS"),
	STRUCT_FLD(author, "Percona"),
	STRUCT_FLD(descr, "InnoDB table statistics in memory"),
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
	STRUCT_FLD(init, i_s_innodb_table_stats_init),
	STRUCT_FLD(deinit, i_s_common_deinit),
	STRUCT_FLD(version, 0x0100 /* 1.0 */),
	STRUCT_FLD(status_vars, NULL),
	STRUCT_FLD(system_vars, NULL),
	STRUCT_FLD(__reserved1, NULL),
	STRUCT_FLD(flags, 0UL)
};

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_index_stats =
{
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
	STRUCT_FLD(info, &i_s_info),
	STRUCT_FLD(name, "INNODB_INDEX_STATS"),
	STRUCT_FLD(author, "Percona"),
	STRUCT_FLD(descr, "InnoDB index statistics in memory"),
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
	STRUCT_FLD(init, i_s_innodb_index_stats_init),
	STRUCT_FLD(deinit, i_s_common_deinit),
	STRUCT_FLD(version, 0x0100 /* 1.0 */),
	STRUCT_FLD(status_vars, NULL),
	STRUCT_FLD(system_vars, NULL),
	STRUCT_FLD(__reserved1, NULL),
	STRUCT_FLD(flags, 0UL)
};

/***********************************************************************
*/
static ST_FIELD_INFO	i_s_innodb_admin_command_info[] =
{
	{STRUCT_FLD(field_name,		"result_message"),
	 STRUCT_FLD(field_length,	1024),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	0),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

#ifndef INNODB_COMPATIBILITY_HOOKS
#error InnoDB needs MySQL to be built with #define INNODB_COMPATIBILITY_HOOKS
#endif

extern "C" {
char **thd_query(MYSQL_THD thd);
}

static
int
i_s_innodb_admin_command_fill(
/*==========================*/
	THD*		thd,
	TABLE_LIST*	tables,
	COND*		cond)
{
	TABLE*	i_s_table	= (TABLE *) tables->table;
	char**	query_str;
	char*	ptr;
	char	quote	= '\0';
	const char*	command_head = "XTRA_";

	DBUG_ENTER("i_s_innodb_admin_command_fill");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {
		DBUG_RETURN(0);
	}

	if(thd_sql_command(thd) != SQLCOM_SELECT) {
		field_store_string(i_s_table->field[0],
			"SELECT command is only accepted.");
		goto end_func;
	}

	query_str = thd_query(thd);
	ptr = *query_str;
	
	for (; *ptr; ptr++) {
		if (*ptr == quote) {
			quote = '\0';
		} else if (quote) {
		} else if (*ptr == '`' || *ptr == '"') {
			quote = *ptr;
		} else {
			long	i;
			for (i = 0; command_head[i]; i++) {
				if (toupper((int)(unsigned char)(ptr[i]))
				    != toupper((int)(unsigned char)
				      (command_head[i]))) {
					goto nomatch;
				}
			}
			break;
nomatch:
			;
		}
	}

	if (!*ptr) {
		field_store_string(i_s_table->field[0],
			"No XTRA_* command in the SQL statement."
			" Please add /*!XTRA_xxxx*/ to the SQL.");
		goto end_func;
	}

	if (!strncasecmp("XTRA_HELLO", ptr, 10)) {
		/* This is example command XTRA_HELLO */

		ut_print_timestamp(stderr);
		fprintf(stderr, " InnoDB: administration command test for XtraDB"
				" 'XTRA_HELLO' was detected.\n");

		field_store_string(i_s_table->field[0],
			"Hello!");
		goto end_func;
	}
	else if (!strncasecmp("XTRA_LRU_DUMP", ptr, 13)) {
		ut_print_timestamp(stderr);
		fprintf(stderr, " InnoDB: Administrative command 'XTRA_LRU_DUMP'"
				" was detected.\n");

		if (buf_LRU_file_dump()) {
			field_store_string(i_s_table->field[0],
				"XTRA_LRU_DUMP was succeeded.");
		} else {
			field_store_string(i_s_table->field[0],
				"XTRA_LRU_DUMP was failed.");
		}

		goto end_func;
	}
	else if (!strncasecmp("XTRA_LRU_RESTORE", ptr, 16)) {
		ut_print_timestamp(stderr);
		fprintf(stderr, " InnoDB: Administrative command 'XTRA_LRU_RESTORE'"
				" was detected.\n");

		if (buf_LRU_file_restore()) {
			field_store_string(i_s_table->field[0],
				"XTRA_LRU_RESTORE was succeeded.");
		} else {
			field_store_string(i_s_table->field[0],
				"XTRA_LRU_RESTORE was failed.");
		}

		goto end_func;
	}

	field_store_string(i_s_table->field[0],
		"Undefined XTRA_* command.");
	goto end_func;

end_func:
	if (schema_table_store_record(thd, i_s_table)) {
		DBUG_RETURN(1);
	} else {
		DBUG_RETURN(0);
	}
}

static
int
i_s_innodb_admin_command_init(
/*==========================*/
	void*	p)
{
	DBUG_ENTER("i_s_innodb_admin_command_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_innodb_admin_command_info;
	schema->fill_table = i_s_innodb_admin_command_fill;

	DBUG_RETURN(0);
}

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_admin_command =
{
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
	STRUCT_FLD(info, &i_s_info),
	STRUCT_FLD(name, "XTRADB_ADMIN_COMMAND"),
	STRUCT_FLD(author, "Percona"),
	STRUCT_FLD(descr, "XtraDB specific command acceptor"),
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
	STRUCT_FLD(init, i_s_innodb_admin_command_init),
	STRUCT_FLD(deinit, i_s_common_deinit),
	STRUCT_FLD(version, 0x0100 /* 1.0 */),
	STRUCT_FLD(status_vars, NULL),
	STRUCT_FLD(system_vars, NULL),
	STRUCT_FLD(__reserved1, NULL),
	STRUCT_FLD(flags, 0UL)
};

/***********************************************************************
*/
static ST_FIELD_INFO	i_s_innodb_buffer_pool_pages_fields_info[] =
{
	{STRUCT_FLD(field_name,		"page_type"),
	 STRUCT_FLD(field_length,	64),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"space_id"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"page_no"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"lru_position"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"fix_count"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"flush_type"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

static ST_FIELD_INFO	i_s_innodb_buffer_pool_pages_index_fields_info[] =
{
	{STRUCT_FLD(field_name,		"index_id"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"space_id"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"page_no"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"n_recs"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"data_size"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"hashed"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"access_time"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"modified"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"dirty"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"old"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"lru_position"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"fix_count"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"flush_type"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

static ST_FIELD_INFO	i_s_innodb_buffer_pool_pages_blob_fields_info[] =
{
	{STRUCT_FLD(field_name,		"space_id"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"page_no"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"compressed"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"part_len"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"next_page_no"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"lru_position"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"fix_count"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	{STRUCT_FLD(field_name,		"flush_type"),
	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
	 STRUCT_FLD(value,		0),
	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
	 STRUCT_FLD(old_name,		""),
	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},

	END_OF_ST_FIELD_INFO
};

/***********************************************************************
Fill the dynamic table information_schema.innodb_buffer_pool_pages. */
static
int
i_s_innodb_buffer_pool_pages_fill(
/*================*/
				/* out: 0 on success, 1 on failure */
	THD*		thd,	/* in: thread */
	TABLE_LIST*	tables,	/* in/out: tables to fill */
	COND*		cond)	/* in: condition (ignored) */
{
	TABLE*	table	= (TABLE *) tables->table;
	int	status	= 0;
	ulint	i;

	DBUG_ENTER("i_s_innodb_buffer_pool_pages_fill");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

		DBUG_RETURN(0);
	}

	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);

	for (i = 0; i < srv_buf_pool_instances; i++) {
		ulint		n_block;
		buf_pool_t*	buf_pool;

		buf_pool = buf_pool_from_array(i);

		buf_pool_mutex_enter(buf_pool);

		for (n_block = 0; n_block < buf_pool->curr_size; n_block++) {
			buf_block_t*	block = buf_page_from_array(buf_pool, n_block);
			const buf_frame_t*	frame = block->frame;

			char page_type[64];

			switch(fil_page_get_type(frame))
			{
				case FIL_PAGE_INDEX:
					strcpy(page_type, "index");
					break;
				case FIL_PAGE_UNDO_LOG:
					strcpy(page_type, "undo_log");
					break;
				case FIL_PAGE_INODE:
					strcpy(page_type, "inode");
					break;
				case FIL_PAGE_IBUF_FREE_LIST:
					strcpy(page_type, "ibuf_free_list");
					break;
				case FIL_PAGE_TYPE_ALLOCATED:
					strcpy(page_type, "allocated");
					break;
				case FIL_PAGE_IBUF_BITMAP:
					strcpy(page_type, "bitmap");
					break;
				case FIL_PAGE_TYPE_SYS:
					strcpy(page_type, "sys");
					break;
				case FIL_PAGE_TYPE_TRX_SYS:
					strcpy(page_type, "trx_sys");
					break;
				case FIL_PAGE_TYPE_FSP_HDR:
					strcpy(page_type, "fsp_hdr");
					break;
				case FIL_PAGE_TYPE_XDES:
					strcpy(page_type, "xdes");
					break;
				case FIL_PAGE_TYPE_BLOB:
					strcpy(page_type, "blob");
					break;
				case FIL_PAGE_TYPE_ZBLOB:
					strcpy(page_type, "zblob");
					break;
				case FIL_PAGE_TYPE_ZBLOB2:
					strcpy(page_type, "zblob2");
					break;
				default:
					sprintf(page_type, "unknown (type=%li)", fil_page_get_type(frame));
			}

			field_store_string(table->field[0], page_type);
			table->field[1]->store(block->page.space);
			table->field[2]->store(block->page.offset);
			table->field[3]->store(0);
			table->field[4]->store(block->page.buf_fix_count);
			table->field[5]->store(block->page.flush_type);

			if (schema_table_store_record(thd, table)) {
				status = 1;
				break;
			}

		}      

		buf_pool_mutex_exit(buf_pool);
	}

	DBUG_RETURN(status);
}

/***********************************************************************
Fill the dynamic table information_schema.innodb_buffer_pool_pages_index. */
static
int
i_s_innodb_buffer_pool_pages_index_fill(
/*================*/
				/* out: 0 on success, 1 on failure */
	THD*		thd,	/* in: thread */
	TABLE_LIST*	tables,	/* in/out: tables to fill */
	COND*		cond)	/* in: condition (ignored) */
{
	TABLE*	table	= (TABLE *) tables->table;
	int	status	= 0;
	ulint	i;
	index_id_t	index_id;

	DBUG_ENTER("i_s_innodb_buffer_pool_pages_index_fill");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

		DBUG_RETURN(0);
	}

	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);

	for (i = 0; i < srv_buf_pool_instances; i++) {
		ulint		n_block;
		buf_pool_t*	buf_pool;

		buf_pool = buf_pool_from_array(i);

		buf_pool_mutex_enter(buf_pool);
	
		for (n_block = 0; n_block < buf_pool->curr_size; n_block++) {
			buf_block_t*	block = buf_page_from_array(buf_pool, n_block);
			const buf_frame_t* frame = block->frame;

			if (fil_page_get_type(frame) == FIL_PAGE_INDEX) {
				index_id = btr_page_get_index_id(frame);
				table->field[0]->store(index_id);
				table->field[1]->store(block->page.space);
				table->field[2]->store(block->page.offset);
				table->field[3]->store(page_get_n_recs(frame));
				table->field[4]->store(page_get_data_size(frame));
				table->field[5]->store(block->index != NULL);
				table->field[6]->store(block->page.access_time);
				table->field[7]->store(block->page.newest_modification != 0);
				table->field[8]->store(block->page.oldest_modification != 0);
				table->field[9]->store(block->page.old);
				table->field[10]->store(0);
				table->field[11]->store(block->page.buf_fix_count);
				table->field[12]->store(block->page.flush_type);

				if (schema_table_store_record(thd, table)) {
					status = 1;
					break;
				}
			}      
		}

		buf_pool_mutex_exit(buf_pool);
	}

	DBUG_RETURN(status);
}

/***********************************************************************
Fill the dynamic table information_schema.innodb_buffer_pool_pages_index. */
static
int
i_s_innodb_buffer_pool_pages_blob_fill(
/*================*/
				/* out: 0 on success, 1 on failure */
	THD*		thd,	/* in: thread */
	TABLE_LIST*	tables,	/* in/out: tables to fill */
	COND*		cond)	/* in: condition (ignored) */
{
	TABLE*	table	= (TABLE *) tables->table;
	int	status	= 0;
	ulint	i;

	ulint		part_len;
	ulint		next_page_no;

	DBUG_ENTER("i_s_innodb_buffer_pool_pages_blob_fill");

	/* deny access to non-superusers */
	if (check_global_access(thd, PROCESS_ACL)) {

		DBUG_RETURN(0);
	}

	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);

	for (i = 0; i < srv_buf_pool_instances; i++) {
		ulint		n_block;
		buf_pool_t*	buf_pool;

		buf_pool = buf_pool_from_array(i);

		buf_pool_mutex_enter(buf_pool);
	
		for (n_block = 0; n_block < buf_pool->curr_size; n_block++) {
			buf_block_t*	block = buf_page_from_array(buf_pool, n_block);
			page_zip_des_t*	block_page_zip = buf_block_get_page_zip(block);
			const buf_frame_t* frame = block->frame;

			if (fil_page_get_type(frame) == FIL_PAGE_TYPE_BLOB) {

				if (UNIV_LIKELY_NULL(block_page_zip)) {
					part_len = 0; /* hmm, can't figure it out */

					next_page_no = mach_read_from_4(
							buf_block_get_frame(block)
							+ FIL_PAGE_NEXT);        
				} else {
					part_len = mach_read_from_4(
							buf_block_get_frame(block)
							+ FIL_PAGE_DATA
							+ 0 /*BTR_BLOB_HDR_PART_LEN*/);

					next_page_no = mach_read_from_4(
							buf_block_get_frame(block)
							+ FIL_PAGE_DATA
							+ 4 /*BTR_BLOB_HDR_NEXT_PAGE_NO*/);
				}

				table->field[0]->store(block->page.space);
				table->field[1]->store(block->page.offset);
				table->field[2]->store(block_page_zip != NULL);
				table->field[3]->store(part_len);

				if(next_page_no == FIL_NULL)
				{
					table->field[4]->store(0);
				} else {
					table->field[4]->store(block->page.offset);
				}

				table->field[5]->store(0);
				table->field[6]->store(block->page.buf_fix_count);
				table->field[7]->store(block->page.flush_type);

				if (schema_table_store_record(thd, table)) {
					status = 1;
					break;
				}

			}
		}      

		buf_pool_mutex_exit(buf_pool);
	}

	DBUG_RETURN(status);
}

/***********************************************************************
Bind the dynamic table information_schema.innodb_buffer_pool_pages. */
static
int
i_s_innodb_buffer_pool_pages_init(
/*=========*/
			/* out: 0 on success */
	void*	p)	/* in/out: table schema object */
{
	DBUG_ENTER("i_s_innodb_buffer_pool_pages_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_innodb_buffer_pool_pages_fields_info;
	schema->fill_table = i_s_innodb_buffer_pool_pages_fill;

	DBUG_RETURN(0);
}

/***********************************************************************
Bind the dynamic table information_schema.innodb_buffer_pool_pages. */
static
int
i_s_innodb_buffer_pool_pages_index_init(
/*=========*/
			/* out: 0 on success */
	void*	p)	/* in/out: table schema object */
{
	DBUG_ENTER("i_s_innodb_buffer_pool_pages_index_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_innodb_buffer_pool_pages_index_fields_info;
	schema->fill_table = i_s_innodb_buffer_pool_pages_index_fill;

	DBUG_RETURN(0);
}

/***********************************************************************
Bind the dynamic table information_schema.innodb_buffer_pool_pages. */
static
int
i_s_innodb_buffer_pool_pages_blob_init(
/*=========*/
			/* out: 0 on success */
	void*	p)	/* in/out: table schema object */
{
	DBUG_ENTER("i_s_innodb_buffer_pool_pages_blob_init");
	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;

	schema->fields_info = i_s_innodb_buffer_pool_pages_blob_fields_info;
	schema->fill_table = i_s_innodb_buffer_pool_pages_blob_fill;

	DBUG_RETURN(0);
}


UNIV_INTERN struct st_mysql_plugin	i_s_innodb_buffer_pool_pages =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB buffer pool pages"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, 0x0100 /* 1.0 */),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_buffer_pool_pages_index =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES_INDEX"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB buffer pool index pages"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_index_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, 0x0100 /* 1.0 */),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};

UNIV_INTERN struct st_mysql_plugin	i_s_innodb_buffer_pool_pages_blob =
{
	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
	/* int */
	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),

	/* pointer to type-specific plugin descriptor */
	/* void* */
	STRUCT_FLD(info, &i_s_info),

	/* plugin name */
	/* const char* */
	STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES_BLOB"),

	/* plugin author (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(author, "Percona"),

	/* general descriptive text (for SHOW PLUGINS) */
	/* const char* */
	STRUCT_FLD(descr, "InnoDB buffer pool blob pages"),

	/* the plugin license (PLUGIN_LICENSE_XXX) */
	/* int */
	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),

	/* the function to invoke when plugin is loaded */
	/* int (*)(void*); */
	STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_blob_init),

	/* the function to invoke when plugin is unloaded */
	/* int (*)(void*); */
	STRUCT_FLD(deinit, i_s_common_deinit),

	/* plugin version (for SHOW PLUGINS) */
	/* unsigned int */
	STRUCT_FLD(version, 0x0100 /* 1.0 */),

	/* struct st_mysql_show_var* */
	STRUCT_FLD(status_vars, NULL),

	/* struct st_mysql_sys_var** */
	STRUCT_FLD(system_vars, NULL),

	/* reserved for dependency checking */
	/* void* */
	STRUCT_FLD(__reserved1, NULL),

	/* flags for plugin */
	/* unsigned long */
	STRUCT_FLD(flags, 0UL)
};