SysInfo::MemUsage Struct Reference

A convenience class to report either absolute or delta (between two timepoints) RAM usage. More...

#include <OpenMS/SYSTEM/SysInfo.h>

Collaboration diagram for SysInfo::MemUsage:

Public Member Functions
	MemUsage ()
	C'tor, calls before() automatically. More...
void	reset ()
	forget all data (you need to call before() again) More...
void	before ()
	record data for the first timepoint More...
void	after ()
	record data for the second timepoint More...
String	delta (const String &event="delta")
String	usage ()

Public Attributes
size_t	mem_before
size_t	mem_before_peak
size_t	mem_after
size_t	mem_after_peak

Private Member Functions
String	diff_str_ (size_t mem_before, size_t mem_after)

Detailed Description

A convenience class to report either absolute or delta (between two timepoints) RAM usage.

Working RAM and Peak RAM usage are recorded at two time points ('before' and 'after').

Note

Peak RAM is only supported on WindowsOS; other OS will only report Working RAM usage

When constructed, MemUsage automatically queries the present RAM usage (first timepoint), i.e. calls before(). Data for the second timepoint can be recorded using after().

delta() reports the difference between the timepoints (before -> after); usage() reports only the second timepoint's absolute value (after).

When delta() or usage() are called, and the second timepoint is not recorded yet, this will be done internally.

Constructor & Destructor Documentation

MemUsage()

MemUsage

(

)

C'tor, calls before() automatically.

Member Function Documentation

after()

void after

(

)

record data for the second timepoint

before()

void before

(

)

record data for the first timepoint

delta()

String delta

(

const String &

event = "delta"

)

get difference in memory usage between the two timepoints after() will be called unless it was called earlier

diff_str_()

String diff_str_ ( size_t  mem_before, size_t  mem_after  )

private

reset()

void reset

(

)

forget all data (you need to call before() again)

usage()

String usage

(

)

get current memory usage (i.e. 'after') after() will be called unless it was called earlier

Member Data Documentation

mem_after

size_t mem_after

mem_after_peak

size_t mem_after_peak

mem_before

size_t mem_before

mem_before_peak

size_t mem_before_peak