dunedaq::trigger::Latency Class Reference

#include <Latency.hpp>

Public Types
enum class	TimeUnit { Microseconds = 1 , Milliseconds = 2 }

Public Member Functions
	Latency (TimeUnit time_unit=TimeUnit::Microseconds)
	~Latency ()
void	update_latency_in (uint64_t latency)
void	update_latency_out (uint64_t latency)
latency	get_latency_in () const
latency	get_latency_out () const

Private Types
using	latency = uint64_t

Private Member Functions
void	setup_conversion ()
uint64_t	get_current_system_time () const
void	update_single_latency (uint64_t latency, std::atomic< uint64_t > &latency_atomic)

Private Attributes
std::atomic< latency >	m_latency_in
std::atomic< latency >	m_latency_out
TimeUnit	m_time_unit
double	m_clock_ticks_conversion
std::function< uint64_t()>	m_get_current_time

Detailed Description

Definition at line 19 of file Latency.hpp.

Member Typedef Documentation

latency

using dunedaq::trigger::Latency::latency = uint64_t

private

Definition at line 21 of file Latency.hpp.

Member Enumeration Documentation

TimeUnit

enum class dunedaq::trigger::Latency::TimeUnit

strong

Enumerator
Microseconds
Milliseconds

Definition at line 25 of file Latency.hpp.

  {
    Microseconds = 1,
    Milliseconds = 2
  };

Constructor & Destructor Documentation

Latency()

dunedaq::trigger::Latency::Latency ( TimeUnit time_unit = TimeUnit::Microseconds )

inline

Definition at line 32 of file Latency.hpp.

    : m_latency_in(0)
    , m_latency_out(0)
    , m_time_unit(time_unit)
  {
    setup_conversion();
  }

~Latency()

dunedaq::trigger::Latency::~Latency ( )

inline

Definition at line 40 of file Latency.hpp.

{}

Member Function Documentation

get_current_system_time()

uint64_t dunedaq::trigger::Latency::get_current_system_time ( ) const

inlineprivate

Definition at line 76 of file Latency.hpp.

{ return m_get_current_time(); }

get_latency_in()

latency dunedaq::trigger::Latency::get_latency_in ( ) const

inline

Definition at line 49 of file Latency.hpp.

{ return m_latency_in.load(); }

get_latency_out()

latency dunedaq::trigger::Latency::get_latency_out ( ) const

inline

Definition at line 52 of file Latency.hpp.

{ return m_latency_out.load(); }

setup_conversion()

void dunedaq::trigger::Latency::setup_conversion ( )

inlineprivate

Definition at line 56 of file Latency.hpp.

  {
    if (m_time_unit == TimeUnit::Microseconds) {
      m_clock_ticks_conversion = 16 * 1e-3; // Conversion for microseconds
      m_get_current_time = []() {
        return std::chrono::duration_cast<std::chrono::microseconds>(
                 std::chrono::system_clock::now().time_since_epoch())
          .count();
      };
    } else {
      m_clock_ticks_conversion = 16 * 1e-6; // Conversion for milliseconds
      m_get_current_time = []() {
        return std::chrono::duration_cast<std::chrono::milliseconds>(
                 std::chrono::system_clock::now().time_since_epoch())
          .count();
      };
    }
  }

update_latency_in()

void dunedaq::trigger::Latency::update_latency_in ( uint64_t latency )

inline

Definition at line 43 of file Latency.hpp.

{ update_single_latency(latency, m_latency_in); }

update_latency_out()

void dunedaq::trigger::Latency::update_latency_out ( uint64_t latency )

inline

Definition at line 46 of file Latency.hpp.

{ update_single_latency(latency, m_latency_out); }

update_single_latency()

void dunedaq::trigger::Latency::update_single_latency ( uint64_t latency, std::atomic< uint64_t > & latency_atomic )

inlineprivate

Definition at line 79 of file Latency.hpp.

  {
    uint64_t current_time = get_current_system_time();
    uint64_t latency_time = latency * m_clock_ticks_conversion;
    uint64_t diff = (current_time >= latency_time) ? (current_time - latency_time) : 0;
    latency_atomic.store(diff);
  }

Member Data Documentation

m_clock_ticks_conversion

double dunedaq::trigger::Latency::m_clock_ticks_conversion

private

Definition at line 90 of file Latency.hpp.

m_get_current_time

std::function<uint64_t()> dunedaq::trigger::Latency::m_get_current_time

private

Definition at line 93 of file Latency.hpp.

m_latency_in

std::atomic<latency> dunedaq::trigger::Latency::m_latency_in

private

Definition at line 87 of file Latency.hpp.

m_latency_out

std::atomic<latency> dunedaq::trigger::Latency::m_latency_out

private

Definition at line 88 of file Latency.hpp.

m_time_unit

TimeUnit dunedaq::trigger::Latency::m_time_unit

private

Definition at line 89 of file Latency.hpp.

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

• /github/workspace/dunedaq/sourcecode/trigger/include/trigger/Latency.hpp