file_stats Class Reference

Detailed Description

Definition at line 45 of file iostats.hpp.

#include <iostats.hpp>

Classes
class	scoped_read_timer
class	scoped_read_write_timer
class	scoped_write_timer

Public Member Functions
	file_stats (unsigned int device_id)
	construct zero initialized More...
unsigned	get_device_id () const
external_size_type	get_read_bytes () const
unsigned	get_read_count () const
double	get_read_time () const
external_size_type	get_write_bytes () const
unsigned	get_write_count () const
double	get_write_time () const
void	read_canceled (const size_t size_)
void	read_finished ()
void	read_op_finished (const size_t size_, double duration)
void	read_started (const size_t size_, double now=0.0)
void	write_canceled (const size_t size_)
void	write_finished ()
void	write_op_finished (const size_t size_, double duration)
void	write_started (const size_t size_, double now=0.0)

Private Attributes
int	acc_reads_
	number of requests, participating in parallel operation More...
int	acc_writes_
const unsigned	device_id_
	associated device id More...
double	p_begin_read_
	start time of parallel operation More...
double	p_begin_write_
external_size_type	read_bytes_
	number of bytes read/written More...
unsigned	read_count_
	number of operations: read/write More...
std::mutex	read_mutex_
double	read_time_
	seconds spent in operations More...
external_size_type	write_bytes_
unsigned	write_count_
std::mutex	write_mutex_
double	write_time_

Constructor & Destructor Documentation

file_stats()

file_stats ( unsigned int  device_id )

explicit

construct zero initialized

Definition at line 35 of file iostats.cpp.

Member Function Documentation

get_device_id()

unsigned get_device_id ( ) const

inline

Returns the device id.

Returns

device id

Definition at line 187 of file iostats.hpp.

References file_stats::device_id_.

get_read_bytes()

external_size_type get_read_bytes ( ) const

inline

Returns number of bytes read from disks.

Returns

number of bytes read

Definition at line 208 of file iostats.hpp.

References file_stats::read_bytes_.

Referenced by stats_data::stats_data().

get_read_count()

unsigned get_read_count ( ) const

inline

Returns total number of read_count_.

Returns

total number of read_count_

Definition at line 194 of file iostats.hpp.

References file_stats::read_count_.

Referenced by stats_data::stats_data().

get_read_time()

double get_read_time ( ) const

inline

Time that would be spent in read syscalls if all parallel read_count_ were serialized.

Returns

seconds spent in reading

Definition at line 223 of file iostats.hpp.

References file_stats::read_time_.

Referenced by stats_data::stats_data().

get_write_bytes()

external_size_type get_write_bytes ( ) const

inline

Returns number of bytes written to the disks.

Returns

number of bytes written

Definition at line 215 of file iostats.hpp.

References file_stats::write_bytes_.

Referenced by stats_data::stats_data().

get_write_count()

unsigned get_write_count ( ) const

inline

Returns total number of write_count_.

Returns

total number of write_count_

Definition at line 201 of file iostats.hpp.

References file_stats::write_count_.

Referenced by stats_data::stats_data().

get_write_time()

double get_write_time ( ) const

inline

Time that would be spent in write syscalls if all parallel write_count_ were serialized.

Returns

seconds spent in writing

Definition at line 231 of file iostats.hpp.

References file_stats::read_canceled(), file_stats::read_finished(), file_stats::read_op_finished(), file_stats::read_started(), file_stats::write_canceled(), file_stats::write_finished(), file_stats::write_op_finished(), file_stats::write_started(), and file_stats::write_time_.

Referenced by stats_data::stats_data().

read_canceled()

void read_canceled

(

const size_t

size_

)

Definition at line 115 of file iostats.cpp.

References file_stats::read_bytes_, file_stats::read_count_, file_stats::read_finished(), and file_stats::read_mutex_.

Referenced by file_stats::get_write_time().

read_finished()

void read_finished

(

)

Definition at line 126 of file iostats.cpp.

References file_stats::acc_reads_, singleton< stats >::get_instance(), file_stats::p_begin_read_, stats::p_read_finished(), file_stats::read_mutex_, file_stats::read_time_, and foxxll::timestamp().

Referenced by file_stats::get_write_time(), file_stats::read_canceled(), file_stats::scoped_read_write_timer::stop(), and file_stats::scoped_read_timer::stop().

read_op_finished()

void read_op_finished	(	const size_t	size_,
		double	duration
	)

Definition at line 141 of file iostats.cpp.

References file_stats::read_bytes_, file_stats::read_count_, file_stats::read_mutex_, and file_stats::read_time_.

Referenced by file_stats::get_write_time().

read_started()

void read_started	(	const size_t	size_,
		double	now = 0.0
	)

Definition at line 97 of file iostats.cpp.

References file_stats::acc_reads_, singleton< stats >::get_instance(), file_stats::p_begin_read_, stats::p_read_started(), file_stats::read_bytes_, file_stats::read_count_, file_stats::read_mutex_, file_stats::read_time_, and foxxll::timestamp().

Referenced by file_stats::get_write_time(), file_stats::scoped_read_write_timer::start(), and file_stats::scoped_read_timer::start().

write_canceled()

void write_canceled

(

const size_t

size_

)

Definition at line 62 of file iostats.cpp.

References file_stats::write_bytes_, file_stats::write_count_, file_stats::write_finished(), and file_stats::write_mutex_.

Referenced by file_stats::get_write_time().

write_finished()

void write_finished

(

)

Definition at line 73 of file iostats.cpp.

References file_stats::acc_writes_, singleton< stats >::get_instance(), file_stats::p_begin_write_, stats::p_write_finished(), foxxll::timestamp(), file_stats::write_mutex_, and file_stats::write_time_.

Referenced by file_stats::get_write_time(), file_stats::scoped_read_write_timer::stop(), file_stats::scoped_write_timer::stop(), and file_stats::write_canceled().

write_op_finished()

void write_op_finished	(	const size_t	size_,
		double	duration
	)

Definition at line 88 of file iostats.cpp.

References file_stats::write_bytes_, file_stats::write_count_, file_stats::write_mutex_, and file_stats::write_time_.

Referenced by file_stats::get_write_time().

write_started()

void write_started	(	const size_t	size_,
		double	now = 0.0
	)

Definition at line 44 of file iostats.cpp.

References file_stats::acc_writes_, singleton< stats >::get_instance(), file_stats::p_begin_write_, stats::p_write_started(), foxxll::timestamp(), file_stats::write_bytes_, file_stats::write_count_, file_stats::write_mutex_, and file_stats::write_time_.

Referenced by file_stats::get_write_time(), file_stats::scoped_read_write_timer::start(), and file_stats::scoped_write_timer::start().

Member Data Documentation

acc_reads_

int acc_reads_

private

number of requests, participating in parallel operation

Definition at line 60 of file iostats.hpp.

Referenced by file_stats::read_finished(), and file_stats::read_started().

acc_writes_

int acc_writes_

private

Definition at line 60 of file iostats.hpp.

Referenced by file_stats::write_finished(), and file_stats::write_started().

device_id_

const unsigned device_id_

private

associated device id

Definition at line 48 of file iostats.hpp.

Referenced by file_stats::get_device_id(), file_stats_data::get_device_id(), file_stats_data::operator+(), and file_stats_data::operator-().

p_begin_read_

double p_begin_read_

private

start time of parallel operation

Definition at line 57 of file iostats.hpp.

Referenced by file_stats::read_finished(), and file_stats::read_started().

p_begin_write_

double p_begin_write_

private

Definition at line 57 of file iostats.hpp.

Referenced by file_stats::write_finished(), and file_stats::write_started().

read_bytes_

external_size_type read_bytes_

private

number of bytes read/written

Definition at line 53 of file iostats.hpp.

Referenced by file_stats::get_read_bytes(), file_stats_data::get_read_bytes(), file_stats_data::operator+(), file_stats_data::operator-(), file_stats::read_canceled(), file_stats::read_op_finished(), and file_stats::read_started().

read_count_

unsigned read_count_

private

number of operations: read/write

Definition at line 51 of file iostats.hpp.

Referenced by file_stats::get_read_count(), file_stats_data::get_read_count(), file_stats_data::operator+(), file_stats_data::operator-(), file_stats::read_canceled(), file_stats::read_op_finished(), and file_stats::read_started().

read_mutex_

std::mutex read_mutex_

private

Definition at line 62 of file iostats.hpp.

Referenced by file_stats::read_canceled(), file_stats::read_finished(), file_stats::read_op_finished(), and file_stats::read_started().

read_time_

double read_time_

private

seconds spent in operations

Definition at line 55 of file iostats.hpp.

Referenced by file_stats::get_read_time(), file_stats_data::get_read_time(), file_stats_data::operator+(), file_stats_data::operator-(), file_stats::read_finished(), file_stats::read_op_finished(), and file_stats::read_started().

write_bytes_

external_size_type write_bytes_

private

Definition at line 53 of file iostats.hpp.

Referenced by file_stats::get_write_bytes(), file_stats_data::get_write_bytes(), file_stats_data::operator+(), file_stats_data::operator-(), file_stats::write_canceled(), file_stats::write_op_finished(), and file_stats::write_started().

write_count_

unsigned write_count_

private

Definition at line 51 of file iostats.hpp.

Referenced by file_stats::get_write_count(), file_stats_data::get_write_count(), file_stats_data::operator+(), file_stats_data::operator-(), file_stats::write_canceled(), file_stats::write_op_finished(), and file_stats::write_started().

write_mutex_

std::mutex write_mutex_

private

Definition at line 62 of file iostats.hpp.

Referenced by file_stats::write_canceled(), file_stats::write_finished(), file_stats::write_op_finished(), and file_stats::write_started().

write_time_

double write_time_

private

Definition at line 55 of file iostats.hpp.

Referenced by file_stats::get_write_time(), file_stats_data::get_write_time(), file_stats_data::operator+(), file_stats_data::operator-(), file_stats::write_finished(), file_stats::write_op_finished(), and file_stats::write_started().

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

• extlib/foxxll/foxxll/io/iostats.hpp
• extlib/foxxll/foxxll/io/iostats.cpp