common/h/hist.h

   1 #ifndef HIST
   2 #define HIST
   3
   4 #include "util/h/list.h"
   5 #include "rtinst/h/trace.h"
   6
   7 #ifndef False
   8 #define False   0
   9 #define True    1
  10 #endif
  11
  12 typedef double timeStamp;
  13
  14 typedef struct {
  15     timeStamp start;
  16     timeStamp end;
  17     sampleValue value;
  18 } Interval;
  19
  20 typedef enum { HistInterval, HistBucket } histType;
  21 typedef enum { HistNewValue, HistNewTimeBase } callType;
  22 typedef sampleValue Bin;
  23
  24 typedef void (*foldCallBack)(timeStamp, void* userData);
  25
  26 typedef void (*dataCallBack)(sampleValue *buckets,
  27                              int numberOfBuckets,
  28                              int first,
  29                              void *userData);
  30
  31 class Histogram;
  32
  33 typedef enum { histActive, histInactive } histStatus;
  34 typedef enum { histSum, histAverage } histCompact;
  35 typedef enum { histSplit, histSet } histAddMode;
  36 typedef enum { EventCounter, SampledFunction } metricStyle;
  37
  38 class Histogram {
  39         friend class histDisplay;
  40         void newDataFunc(callType type, timeStamp time, void* userData);
  41     public:
  42         ~Histogram();
  43         Histogram(metricStyle, dataCallBack, foldCallBack, void* );
  44         Histogram(Bin *buckets, metricStyle, dataCallBack, foldCallBack, void*);
  45         sampleValue getValue();
  46         sampleValue getValue(timeStamp start, timeStamp end);
  47         int getBuckets(sampleValue *buckets, int numberOfBuckets, int first);
  48         void addInterval(timeStamp start, timeStamp end,
  49             sampleValue value, Boolean smooth);
  50         void addPoint(timeStamp start, sampleValue value) {
  51             addInterval(start, start, value, False);
  52         }
  53         timeStamp currentTime() {
  54                 return((timeStamp)(lastGlobalBin*bucketSize));
  55         }
  56         static int numBins;             /* max bins to use */
  57         static timeStamp bucketSize;    /* width of a bucket */
  58     private:
  59         void foldAllHist();
  60         void convertToBins();
  61         void bucketValue(timeStamp start, timeStamp end,
  62                 sampleValue value, Boolean smooth);
  63
  64         static timeStamp total_time;    /* numBins * bucketSize */
  65         static int lastGlobalBin;       /* global point we have data from */
  66         static Histogram *allHist;      /* linked list of all histograms */
  67
  68         Histogram *next;                /* linked list of all histograms */
  69         int lastBin;                    /* current (for this hist) last bin */
  70
  71         histType storageType;
  72         Boolean smooth;         /* prevent values greater than binWidth */
  73         metricStyle metricType; /* sampled function or event counter */
  74         int intervalCount;      /* # of intervals in use */
  75         int intervalLimit;      /* # of intervals in use */
  76         union {
  77             Bin *buckets;
  78             Interval *intervals;
  79         } dataPtr;
  80         dataCallBack dataFunc;
  81         foldCallBack foldFunc;
  82         void *cData;
  83 };
  84
  85 #endif