RandomEngineRegistry.h

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#ifndef _fwk_RandomEngineRegistry_h_
#define _fwk_RandomEngineRegistry_h_

#include <utl/Singleton.h>
#include <utl/AugerException.h>
#include <utl/RandomEngine.h>
#include <utl/ShadowPtr.h>
#include <string>
#include <map>


namespace fwk {

  class RandomEngineRegistry : public utl::Singleton<RandomEngineRegistry> {

  public:
    enum RandomEngineID {
      eDetector = 0,
      ePhysics = 1
    };

    class InvalidRandomEngineException : public utl::AugerException {

    public:
      InvalidRandomEngineException(const std::string& message = "")
        : AugerException(message) { }

      virtual std::string GetExceptionName() const
      { return "Invalid random engine in registry exception"; }

    };

    utl::RandomEngine& Get(const RandomEngineID id = eDetector);

  private:
    RandomEngineRegistry() { }
    ~RandomEngineRegistry();

    void Init();

    void RegisterOne(const RandomEngineID id, utl::RandomEngine* const engine);

    void GenerateSeeds(long* const seed, const int n) const;

    typedef std::map<RandomEngineID, utl::RandomEngine*> Registry;
    utl::ShadowPtr<Registry> fRegistry;

    friend class utl::Singleton<RandomEngineRegistry>;

  };

}


#endif