unordered_stream_filter.h

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#ifndef GRPPI_FF_DETAIL_UNORDERED_STREAM_FILTER_H
#define GRPPI_FF_DETAIL_UNORDERED_STREAM_FILTER_H

#include "filter_nodes.h"

#include <ff/farm.hpp>

namespace grppi {

namespace detail_ff {

template <typename Item, typename Filter>
class unordered_stream_filter : public ff::ff_ofarm {
public:
  unordered_stream_filter(Filter && filter, int num_workers);

private:
  Filter filter_;
  std::vector<ff::ff_node *> workers_;
  std::unique_ptr<filter_emitter<Item>> p_emitter_;
  std::unique_ptr<filter_collector<Item>> p_collector_;
};

template <typename Item, typename Filter>
unordered_stream_filter<Item,Filter>::unordered_stream_filter(
        Filter && filter, 
        int num_workers) 
:      
    ff::ff_ofarm{false, DEF_IN_BUFF_ENTRIES, DEF_OUT_BUFF_ENTRIES, true, num_workers},
    filter_{std::move(filter)},
    workers_{},
    p_emitter_{std::make_unique<filter_emitter<Item>>()},
    p_collector_{std::make_unique<filter_collector<Item>>()}
{
  for(int i=0;i<num_workers;++i) {
    workers_.push_back(new filter_worker<Item,Filter>{
        std::forward<Filter>(filter_)});
  }
  add_workers(workers_);
  add_emitter(p_emitter_.get());
  add_collector(p_collector_.get());
}

} // namespace detail_ff

} // namespace grppi


#endif