om::GUIModelSubscriber Class Reference

#include "/cvmfs/nova-development.opensciencegrid.org/novasoft/releases/N20-12-03/OnlineMonitoring/viewer/GUIModelSubscriber.h"

Inheritance diagram for om::GUIModelSubscriber:

Public Member Functions
	GUIModelSubscriber (unsigned int which)
	~GUIModelSubscriber ()
bool	GetLock ()
void	ReleaseLock ()
virtual void	GUIModelDataIssue (const GUIModelData &m, unsigned int which)=0

Detailed Description

Any class which needs to be informated about state changes in the GUIModel

Definition at line 11 of file GUIModelSubscriber.h.

Constructor & Destructor Documentation

GUIModelSubscriber::GUIModelSubscriber

(

unsigned int

which

)

Create a GUIModel subscriber.

Parameters

which

- bit set indicating which messages we want

See GUIModelData for the list of possibilities

Definition at line 10 of file GUIModelSubscriber.cxx.

References om::GUIModel::Instance(), and om::GUIModel::Subscribe().

{
  GUIModel::Instance().Subscribe(this, which);
}

GUIModelSubscriber::~GUIModelSubscriber

(

)

Definition at line 17 of file GUIModelSubscriber.cxx.

References om::GUIModel::Instance(), and om::GUIModel::Unsubscribe().

{
  GUIModel::Instance().Unsubscribe(this);
}

Member Function Documentation

bool GUIModelSubscriber::GetLock

(

)

Definition at line 24 of file GUIModelSubscriber.cxx.

References gsLock, MECModelEnuComparisons::i, and kSleep.

Referenced by om::CaptionBox::GUIModelDataIssue(), om::HistogramInfo::GUIModelDataIssue(), om::ButtonBank::GUIModelDataIssue(), om::HistogramBrowser::GUIModelDataIssue(), om::PlotViewer::GUIModelDataIssue(), and om::WatchListBox::GUIModelDataIssue().

{
  unsigned int i;
  const unsigned int kSleep = 1000;  // 1 msec
  const unsigned int kCount = 10000; // 10k tries at 1 msec = 10 seconds
  for (i=0; i<kCount; ++i) {
    if (gsLock==false) { 
      gsLock = true;
      return true;
    }
    usleep(kSleep);
  }
  return false;
}

virtual void om::GUIModelSubscriber::GUIModelDataIssue ( const GUIModelData &  m, unsigned int  which  )

pure virtual

Receive notifications when the GUI model data has changed

Parameters

m	- The new model data
which	- Which element of the data has changed

See GUIModel.h for the definitions of "which".

Note: To prevent collisions between threads, users should implement their "GUIModelDataIssue" methods following this pattern:

{ book aok = this->GetLock(); if (!aok) return;

...your code here...

this->ReleaseLock(); }

Implemented in om::WatchListBox, om::PlotViewer, om::HistogramBrowser, om::ButtonBank, om::ComparisonBox, om::CaptionBox, and om::HistogramInfo.

void GUIModelSubscriber::ReleaseLock

(

)

Definition at line 41 of file GUIModelSubscriber.cxx.

References gsLock.

Referenced by om::CaptionBox::GUIModelDataIssue(), om::HistogramInfo::GUIModelDataIssue(), om::ButtonBank::GUIModelDataIssue(), om::HistogramBrowser::GUIModelDataIssue(), om::PlotViewer::GUIModelDataIssue(), and om::WatchListBox::GUIModelDataIssue().

{
  gsLock = false;
}

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

• /cvmfs/nova-development.opensciencegrid.org/novasoft/releases/N20-12-03/OnlineMonitoring/viewer/GUIModelSubscriber.h
• /cvmfs/nova-development.opensciencegrid.org/novasoft/releases/N20-12-03/OnlineMonitoring/viewer/GUIModelSubscriber.cxx