IncidenceCount Class Reference

#include "lib/incidence-count.hpp"

Description

A recorder for concurrent incidences.

Start and end of individual activations are recorded by direct calls, automatically detecting the thread identity; for further differentiation, an additional caseID can be given. Accumulated observations can be integrated into a statistics evaluation.

Warning

never operate multiple instances of this helper at the same time

Definition at line 65 of file incidence-count.hpp.

Public Member Functions
double	calcCumulatedTime ()
Statistic	evaluate ()
	Visit all data captured thus far, construct an unified timeline and then compute statistics evaluations to characterise observations. More...
IncidenceCount &	expectIncidents (size_t cnt)
IncidenceCount &	expectThreads (uint8_t cnt)
void	markEnter (uint8_t caseID=0)
void	markLeave (uint8_t caseID=0)

Classes
struct	Inc
struct	Statistic

Private Types
using	Clock = std::chrono::steady_clock
using	Dur = std::chrono::duration< double, TIMING_SCALE >
using	Instance = decltype(Clock::now())
using	Recording = vector< Sequence >
using	Sequence = vector< Inc >
using	TIMING_SCALE = std::micro

Private Member Functions
void	addEntry (uint8_t caseID, bool isLeave)
uint8_t	allocateNextSlot ()
	threadsafe allocation of thread/slotID
Sequence &	getMySequence (uint8_t threadID)
uint8_t	getMySlot ()
Private Member Functions inherited from NonCopyable
	NonCopyable (NonCopyable const &)=delete
NonCopyable &	operator= (NonCopyable const &)=delete

Private Attributes
Recording	rec_
std::atomic_uint8_t	slotID_ {0}

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Class Documentation

lib::IncidenceCount::Inc

struct lib::IncidenceCount::Inc

Class Members
Instance	when
uint8_t	thread:8
uint8_t	caseID:8
bool	isLeave:1

Collaboration diagram for IncidenceCount::Inc:

Member Function Documentation

evaluate()

IncidenceCount::Statistic evaluate ( )

inline

Visit all data captured thus far, construct an unified timeline and then compute statistics evaluations to characterise observations.

Warning

caller must ensure there was a barrier or visibility sync before invocation.

Definition at line 207 of file incidence-count.hpp.

References IncidenceCount::Statistic::activeTime, IncidenceCount::Statistic::avgConcurrency, IncidenceCount::Statistic::caseCntr, IncidenceCount::Statistic::caseTime, IncidenceCount::Statistic::coveredTime, IncidenceCount::Statistic::cumulatedTime, lib::explore(), IncidenceCount::Statistic::thrdCntr, and IncidenceCount::Statistic::thrdTime.

Here is the call graph for this function:

Inheritance diagram for IncidenceCount:

Collaboration diagram for IncidenceCount:

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

• incidence-count.hpp