edm::CountAndLimit Class Reference

#include <ELmap.h>

Public Member Functions
bool	add ()
	CountAndLimit (int lim=-1, int ts=-1, int ivl=-1)

Public Attributes
int	aggregateN
int	interval
time_t	lastTime
int	limit
int	n
int	skipped
int	timespan

Detailed Description

Definition at line 61 of file ELmap.h.

Constructor & Destructor Documentation

edm::CountAndLimit::CountAndLimit	(	int	lim = -1,
		int	ts = -1,
		int	ivl = -1
	)

Definition at line 47 of file ELmap.cc.

: n         ( 0 )
, aggregateN( 0 )
, lastTime  ( time(0) )
, limit     ( lim )
, timespan  ( ts  )
, interval  ( ivl )
, skipped   ( ivl-1 )  // So that the FIRST of the prescaled messages emerges
{ }

Member Function Documentation

bool edm::CountAndLimit::add

(

)

Definition at line 58 of file ELmap.cc.

References aggregateN, ecal_dqm_sourceclient-live_cfg::cerr, mps_update::diff, interval, lastTime, limit, n, fileCollector::now, alignCSCRings::r, skipped, and timespan.

Referenced by counter.Counter::register().

                          {

  time_t  now = time(0);

#ifdef ELcountTRACE
  std::cerr << "&&&--- CountAndLimit::add \n";
  std::cerr << "&&&    Time now  is " << now << "\n";
  std::cerr << "&&&    Last time is " << lastTime << "\n";
  std::cerr << "&&&    timespan  is " << timespan << "\n";
  std::cerr << "&&&    difftime  is " << difftime( now, lastTime ) << "\n"
                                << std::flush;
#endif

  // Has it been so long that we should restart counting toward the limit?
  if ( (timespan >= 0)
            &&
        (difftime(now, lastTime) >= timespan) )  {
     n = 0;
     if ( interval > 0 ) {
       skipped = interval - 1; // So this message will be reacted to
     } else {
       skipped = 0;
     }
  }

  lastTime = now;

  ++n;  
  ++aggregateN;
  ++skipped;  

#ifdef ELcountTRACE
  std::cerr << "&&&       n is " << n << "-- limit is    " << limit    << "\n";
  std::cerr << "&&& skipped is " << skipped 
                                  << "-- interval is " << interval << "\n";
#endif
  
  if (skipped < interval) return false;

  if ( limit == 0 ) return false;        // Zero limit - never react to this
  if ( (limit < 0)  || ( n <= limit )) {
    skipped = 0;
    return true;
  }
  
  // Now we are over the limit - have we exceeded limit by 2^N * limit?
  long  diff = n - limit;
  long  r = diff/limit;
  if ( r*limit != diff ) { // Not a multiple of limit - don't react
    return false;
  }  
  if ( r == 1 )   { // Exactly twice limit - react
    skipped = 0;
    return true;
  }

  while ( r > 1 )  {
    if ( (r & 1) != 0 )  return false;  // Not 2**n times limit - don't react
    r >>= 1;
  }
  // If you never get an odd number till one, r is 2**n so react
  
  skipped = 0;
  return true;

}  // add()

Member Data Documentation

int edm::CountAndLimit::aggregateN

Definition at line 66 of file ELmap.h.

Referenced by add().

int edm::CountAndLimit::interval

Definition at line 70 of file ELmap.h.

Referenced by add().

time_t edm::CountAndLimit::lastTime

Definition at line 67 of file ELmap.h.

Referenced by add().

int edm::CountAndLimit::limit

Definition at line 68 of file ELmap.h.

Referenced by add().

int edm::CountAndLimit::n

Definition at line 65 of file ELmap.h.

Referenced by add().

int edm::CountAndLimit::skipped

Definition at line 71 of file ELmap.h.

Referenced by add().

int edm::CountAndLimit::timespan

Definition at line 69 of file ELmap.h.

Referenced by add().