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/root/src/subsynth/syn/Util/WatermarkedQueue.h

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#ifndef WATERMARKED_QUEUE
#define WATERMARKED_QUEUE

#include <queue>

namespace syn
{
   template <typename _type>
   class WatermarkedQueue : public std::queue<_type, std::list<_type> >
   {
   public:
      WatermarkedQueue() : mLow( 1 ),
                            mHigh( 2 )
      {
      }
      virtual ~WatermarkedQueue() {}

   // watermark metrics...
   public:
      void setHighMark( unsigned int h )
      {
         mHigh = h;
      }

      void setLowMark( unsigned int l )
      {
         mLow = l;
      }
      
      inline unsigned int highMark() const { return mHigh; }
      inline unsigned int lowMark() const { return mLow; }
      
      bool high() const { return this->size() >= this->highMark(); }

      bool low() const { return this->size() < this->lowMark(); }

      bool empty() const { return this->size() == 0; }
      
      unsigned int mLow, mHigh;
   };
}

#endif

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