Line data    Source code

       1             : ///////////////////////////////////////////////////////////////////////////
       2             : // Spetabaru - Berenger Bramas MPCDF - 2017
       3             : // Under LGPL Licence, please you must read the LICENCE file.
       4             : ///////////////////////////////////////////////////////////////////////////
       5             : #ifndef SPPROBABILITY_HPP
       6             : #define SPPROBABILITY_HPP
       7             : 
       8             : #include <cassert>
       9             : 
      10             : /**
      11             :  * This class should be used to inform the runtime
      12             :  * about the propability that a potential task will
      13             :  * modify its target data.
      14             :  */
      15             : class SpProbability{
      16             :     bool activated;
      17             :     double probability;
      18             :     int includedProbabilities;
      19             : public:
      20             :     explicit SpProbability(const double inProbability)
      21             :         : activated(true), probability(inProbability), includedProbabilities(1){
      22             :         assert(0 <= probability && probability <= 1);
      23             :     }
      24             : 
      25        1300 :     explicit SpProbability()
      26        1300 :         : activated(false), probability(0), includedProbabilities(0){
      27        1300 :         assert(0 <= probability && probability <= 1);
      28        1300 :     }
      29             : 
      30             :     double getProbability() const{
      31             :         return probability;
      32             :     }
      33             : 
      34             :     bool isUsed() const{
      35             :         return activated;
      36             :     }
      37             : 
      38           0 :     void append(const SpProbability& other){
      39           0 :         if(activated == false){
      40           0 :             (*this) = other;
      41             :         }
      42           0 :         else if(other.activated == true){
      43           0 :             probability = (probability*includedProbabilities + other.probability)/includedProbabilities;
      44           0 :             includedProbabilities += 1;
      45             :         }
      46           0 :     }
      47             : };
      48             : 
      49             : #endif
      50             :