edm::RunningAverage Class Reference

#include <RunningAverage.h>

Public Member Functions
int	mean () const
	RunningAverage (unsigned int k=4)
void	update (unsigned int q)
int	upper () const

Static Public Attributes
static constexpr int	N = 16

Private Member Functions
friend	int::test::running_average::test ()

Private Attributes
std::array< std::atomic< int >, N >	m_buffer
std::atomic< int >	m_curr
std::atomic< int >	m_mean

Detailed Description

Definition at line 17 of file RunningAverage.h.

Constructor & Destructor Documentation

edm::RunningAverage::RunningAverage ( unsigned int  k = 4 )

inlineexplicit

Definition at line 23 of file RunningAverage.h.

References i, relval_2017::k, and m_buffer.

                                              : m_mean(N*k), m_curr(0) {
      for (auto & i : m_buffer) i=k; 
    }

Member Function Documentation

edm::RunningAverage::int::test::running_average::test ( )

private

int edm::RunningAverage::mean ( ) const

inline

Definition at line 27 of file RunningAverage.h.

References m_mean, and N.

Referenced by upper().

{ return m_mean/N;}

void edm::RunningAverage::update ( unsigned int  q )

inline

Definition at line 31 of file RunningAverage.h.

References alignCSCRings::e, relval_2017::k, m_buffer, m_curr, m_mean, and N.

Referenced by HitPairGenerator::clear(), HitTripletGenerator::run(), MultiHitGenerator::run(), and Vispa.Gui.ZoomableWidget.ZoomableWidget::setZoom().

                               {
      int e=m_curr;
      while(!m_curr.compare_exchange_weak(e,e+1)); 
      int k = (N-1)&e;
      int old = m_buffer[k];
      if (!m_buffer[k].compare_exchange_strong(old,q)) return;
      m_mean+= (q-old); 
    }

int edm::RunningAverage::upper ( ) const

inline

Definition at line 29 of file RunningAverage.h.

References funct::abs(), m_buffer, mean(), and N.

Referenced by HitTripletGenerator::run(), HitPairGenerator::run(), and MultiHitGenerator::run().

{ auto lm = mean(); return lm+=(std::abs(m_buffer[0]-lm)+std::abs(m_buffer[N/2]-lm)); }  // about 2 sigma

Member Data Documentation

std::array<std::atomic<int>,N> edm::RunningAverage::m_buffer

private

Definition at line 42 of file RunningAverage.h.

Referenced by RunningAverage(), update(), and upper().

std::atomic<int> edm::RunningAverage::m_curr

private

Definition at line 44 of file RunningAverage.h.

Referenced by update().

std::atomic<int> edm::RunningAverage::m_mean

private

Definition at line 43 of file RunningAverage.h.

Referenced by mean(), and update().

constexpr int edm::RunningAverage::N = 16

static

Definition at line 22 of file RunningAverage.h.

Referenced by mean(), update(), and upper().