mem.cc File Reference

Data dictionary memory object creation. More...

#include <new>
#include "dict0dict.h"
#include "lock0lock.h"

Functions
const char *	dict_add_col_name (const char *col_names, ulint cols, const char *name, mem_heap_t *heap)
	NOTE: The functions in this file should only use functions from other files in library. More...
void	dict_mem_table_free (dict_table_t *table)
	Free a table memory object. More...
static bool	dict_mem_table_is_system (const std::string name)
	Determines if a table is a system table. More...
dict_table_t *	dict_mem_table_create (const char *name, space_id_t space, ulint n_cols, ulint n_v_cols, ulint n_m_v_cols, uint32_t flags, uint32_t flags2, uint32_t n_drop_cols)
	Creates a table memory object. More...
dict_index_t *	dict_mem_index_create (const char *table_name, const char *index_name, ulint space, ulint type, ulint n_fields)
	Creates an index memory object. More...
void	dict_mem_table_add_col (dict_table_t *table, mem_heap_t *heap, const char *name, ulint mtype, ulint prtype, ulint len, bool is_visible, uint32_t phy_pos, row_version_t v_added, row_version_t v_dropped)
	Adds a column definition to a table. More...
void	dict_mem_fill_column_struct (dict_col_t *column, ulint col_pos, ulint mtype, ulint prtype, ulint col_len, bool is_visible, uint32_t phy_pos, row_version_t v_added, row_version_t v_dropped)
	This function populates a dict_col_t memory structure with supplied information. More...

Variables
static std::string	innobase_system_databases []
	System databases. More...

Detailed Description

Data dictionary memory object creation.

Created 1/8/1996 Heikki Tuuri

Function Documentation

dict_add_col_name()

const char * dict_add_col_name	(	const char *	col_names,
		ulint	cols,
		const char *	name,
		mem_heap_t *	heap
	)

NOTE: The functions in this file should only use functions from other files in library.

Append 'name' to 'col_names'.

The code in this file is used to make a library for external tools. Append 'name' to 'col_names'.

See also

dict_table_t::col_names

Returns

new column names array

Parameters

col_names	in: existing column names, or NULL
cols	in: number of existing columns
name	in: new column name
heap	in: heap

dict_mem_fill_column_struct()

void dict_mem_fill_column_struct	(	dict_col_t *	column,
		ulint	col_pos,
		ulint	mtype,
		ulint	prtype,
		ulint	col_len,
		bool	is_visible,
		uint32_t	phy_pos,
		row_version_t	v_added,
		row_version_t	v_dropped
	)

This function populates a dict_col_t memory structure with supplied information.

Parameters

[out]	column	column struct to be filled
[in]	col_pos	column position
[in]	mtype	main data type
[in]	prtype	precise type
[in]	col_len	column length
[in]	is_visible	true if column is visible
[in]	phy_pos	position of col in physical record
[in]	v_added	table row version when col was added INSTANTly
[in]	v_dropped	table row version when col was dropped INSTANTly

dict_mem_index_create()

dict_index_t * dict_mem_index_create	(	const char *	table_name,
		const char *	index_name,
		ulint	space,
		ulint	type,
		ulint	n_fields
	)

Creates an index memory object.

Returns

own: index object

Parameters

table_name	in: table name
index_name	in: index name
space	in: space where the index tree is placed, ignored if the index is of the clustered type
type	in: DICT_UNIQUE, DICT_CLUSTERED, ... ORed
n_fields	in: number of fields

dict_mem_table_add_col()

void dict_mem_table_add_col	(	dict_table_t *	table,
		mem_heap_t *	heap,
		const char *	name,
		ulint	mtype,
		ulint	prtype,
		ulint	len,
		bool	is_visible,
		uint32_t	phy_pos = UINT32_UNDEFINED,
		row_version_t	v_added = INVALID_ROW_VERSION,
		row_version_t	v_dropped = INVALID_ROW_VERSION
	)

Adds a column definition to a table.

Parameters

[in]	table	table
[in]	heap	temporary memory heap, or NULL
[in]	name	column name, or NULL
[in]	mtype	main datatype
[in]	prtype	precise type
[in]	len	length of column
[in]	is_visible	true if column is visible
[in]	phy_pos	position of col in physical record
[in]	v_added	table row version when col was added INSTANTly
[in]	v_dropped	table_row version when col was dropped INSTANTly

dict_mem_table_create()

dict_table_t * dict_mem_table_create	(	const char *	name,
		space_id_t	space,
		ulint	n_cols,
		ulint	n_v_cols,
		ulint	n_m_v_cols,
		uint32_t	flags,
		uint32_t	flags2,
		uint32_t	n_drop_cols = 0
	)

Creates a table memory object.

Parameters

[in]	name	table name
[in]	space	space where the clustered index of the table is placed
[in]	n_cols	total number of columns including virtual and non-virtual columns
[in]	n_v_cols	number of virtual columns
[in]	n_m_v_cols	number of multi-value virtual columns
[in]	flags	table flags
[in]	flags2	table flags2
[in]	n_drop_cols	Number of INSTANT drop cols

Returns

own: table object

dict_mem_table_free()

void dict_mem_table_free

(

dict_table_t *

table

)

Free a table memory object.

in: table

Parameters

table

in: table

dict_mem_table_is_system()

static bool dict_mem_table_is_system ( const std::string  name )

static

Determines if a table is a system table.

Parameters

[in]

name

table_name

Returns

true if table is system table

Variable Documentation

innobase_system_databases

std::string innobase_system_databases[]

static

Initial value:

= {
    "mysql/", "information_schema/", "performance_schema/", ""}

System databases.