File_segment_inode Class Reference

A wrapper class to operate on a file segment inode pointer (fseg_inode_t*) More...

#include <fsp0fsp.h>

Public Member Functions
	File_segment_inode (space_id_t space_id, const page_size_t &page_size, fseg_inode_t *inode, mtr_t *mtr)
	Constructor. More...
void	write_not_full_n_used (uint32_t n_used)
	Update the value of FSEG_NOT_FULL_N_USED. More...
uint32_t	read_not_full_n_used () const
	Get the current value of FSEG_NOT_FULL_N_USED. More...
uint64_t	get_seg_id () const
	Get the segment identifier value. More...
std::ostream &	print (std::ostream &out) const
	Print the current object into the given output stream. More...
bool	verify_not_full_n_used ()
	Verify the stored FSEG_NOT_FULL_N_USED value. More...

Private Member Functions
page_no_t	calculate_not_full_n_used ()
	Calculate the value of FSEG_NOT_FULL_N_USED by traversing the FSEG_NOT_FULL list. More...
bool	do_verify ()
	To reduce the cost of verification of FSEG_NOT_FULL_N_USED, do it only when this function returns true. More...

Private Attributes
space_id_t	m_space_id
	Unique tablespace identifier. More...
const page_size_t &	m_page_size
	The page size used in this tablespace. More...
fseg_inode_t *	m_fseg_inode
	file segment inode pointer that is being wrapped by this object. More...
mtr_t *	m_mtr
	The mini-transaction operation context. More...
std::random_device	m_rd
std::default_random_engine	m_random_engine
std::uniform_int_distribution< int >	m_dist

Detailed Description

A wrapper class to operate on a file segment inode pointer (fseg_inode_t*)

Constructor & Destructor Documentation

File_segment_inode()

File_segment_inode::File_segment_inode ( space_id_t  space_id, const page_size_t &  page_size, fseg_inode_t *  inode, mtr_t *  mtr  )

inline

Constructor.

Parameters

[in]	space_id	Table space identifier
[in]	page_size	Size of each page in the tablespace.
[in]	inode	File segment inode pointer
[in]	mtr	Mini-transaction context.

Member Function Documentation

calculate_not_full_n_used()

page_no_t File_segment_inode::calculate_not_full_n_used ( )

private

Calculate the value of FSEG_NOT_FULL_N_USED by traversing the FSEG_NOT_FULL list.

Returns

the calculated value of FSEG_NOT_FULL_N_USED.

do_verify()

bool File_segment_inode::do_verify ( )

inlineprivate

To reduce the cost of verification of FSEG_NOT_FULL_N_USED, do it only when this function returns true.

Returns

true for 10% of the time.

get_seg_id()

uint64_t File_segment_inode::get_seg_id ( ) const

inline

Get the segment identifier value.

Returns

the segment identifier value.

print()

std::ostream & File_segment_inode::print

(

std::ostream &

out

)

const

Print the current object into the given output stream.

Returns

the output stream.

read_not_full_n_used()

uint32_t File_segment_inode::read_not_full_n_used

(

)

const

Get the current value of FSEG_NOT_FULL_N_USED.

Returns

the current value of FSEG_NOT_FULL_N_USED.

verify_not_full_n_used()

bool File_segment_inode::verify_not_full_n_used

(

)

Verify the stored FSEG_NOT_FULL_N_USED value.

Returns

true if correct value, false if incorrect.

write_not_full_n_used()

void File_segment_inode::write_not_full_n_used

(

uint32_t

n_used

)

Update the value of FSEG_NOT_FULL_N_USED.

Parameters

[in]

n_used

the new value of FSEG_NOT_FULL_N_USED.

Member Data Documentation

m_dist

std::uniform_int_distribution<int> File_segment_inode::m_dist

private

m_fseg_inode

fseg_inode_t* File_segment_inode::m_fseg_inode

private

file segment inode pointer that is being wrapped by this object.

m_mtr

mtr_t* File_segment_inode::m_mtr

private

The mini-transaction operation context.

m_page_size

const page_size_t& File_segment_inode::m_page_size

private

The page size used in this tablespace.

m_random_engine

std::default_random_engine File_segment_inode::m_random_engine

private

m_rd

std::random_device File_segment_inode::m_rd

private

m_space_id

space_id_t File_segment_inode::m_space_id

private

Unique tablespace identifier.

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The documentation for this class was generated from the following files:

• storage/innobase/include/fsp0fsp.h
• storage/innobase/fsp/fsp0fsp.cc