HistObject Class Reference

Class to keep track of delta histograms. More...

#include <HistObject.h>

Public Member Functions
	HistObject (void)
	Constructor.
	~HistObject (void)
	Destructor.
bool	update (TH1 *hist)
	Check if update of histogram is necessary.
void	resetBeforeEvent (void)
	Reset histogram and update flag, not the entries.
bool	isUpdated (void)
	Check if hist was updated.
TH1 *	getHist (void)
	Get hist pointer.

Public Attributes
std::unique_ptr< TH1 >	m_hist
	Pointer to histogram.
bool	m_updated = false
	flag if update since last event
double	m_entries = -1
	entries in previous/current for update check

Detailed Description

Class to keep track of delta histograms.

Definition at line 21 of file HistObject.h.

Constructor & Destructor Documentation

HistObject()

HistObject ( void  )

inline

Constructor.

Definition at line 30 of file HistObject.h.

: m_hist(nullptr), m_updated(false), m_entries(-1) {};

~HistObject()

~HistObject

(

void

)

Destructor.

Definition at line 12 of file HistObject.cc.

{
}

Member Function Documentation

getHist()

TH1 * getHist ( void  )

inline

Get hist pointer.

Returns

hist ptr

Definition at line 54 of file HistObject.h.

{ return m_hist.get();};

isUpdated()

bool isUpdated ( void  )

inline

Check if hist was updated.

Returns

it was updated

Definition at line 49 of file HistObject.h.

{ return m_updated;};

resetBeforeEvent()

void resetBeforeEvent

(

void

)

Reset histogram and update flag, not the entries.

Definition at line 27 of file HistObject.cc.

{
  m_hist = nullptr;
  m_updated = false;
}

update()

bool update

(

TH1 *

hist

)

Check if update of histogram is necessary.

Parameters

hist	pointer to histogram

Returns

histogram was updated flag (return m_updated)

Definition at line 16 of file HistObject.cc.

{
  if (hist) {
    // usual check for nullptr
    m_updated |= hist->GetEntries() != m_entries;
    m_entries = hist->GetEntries();
  }
  m_hist = std::unique_ptr<TH1>(hist); // even if it is nullptr
  return m_updated;
}

Member Data Documentation

m_entries

double m_entries = -1

entries in previous/current for update check

Definition at line 25 of file HistObject.h.

m_hist

std::unique_ptr<TH1> m_hist

Pointer to histogram.

Definition at line 23 of file HistObject.h.

m_updated

bool m_updated = false

flag if update since last event

Definition at line 24 of file HistObject.h.

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

• dqm/analysis/include/HistObject.h
• dqm/analysis/src/HistObject.cc