library/cpp/actors/interconnect/poller_tcp_unit.h


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#pragma once 
 
#include <util/system/thread.h> 
#include <library/cpp/actors/util/funnel_queue.h>
 
#include "interconnect_stream.h" 
 
#include <memory> 
#include <functional> 
#include <unordered_map> 
 
namespace NInterconnect { 
    using NActors::TFDDelegate;
    using NActors::TSharedDescriptor;
 
    class TPollerUnit {
    public:
        typedef std::unique_ptr<TPollerUnit> TPtr;
 
        static TPtr Make(bool useSelect);
 
        void Start();
        void Stop();
 
        virtual void StartReadOperation(
            const TIntrusivePtr<TSharedDescriptor>& stream,
            TFDDelegate&& operation);
 
        virtual void StartWriteOperation(
            const TIntrusivePtr<TSharedDescriptor>& stream,
            TFDDelegate&& operation);
 
        virtual ~TPollerUnit();
 
    private:
        virtual void ProcessRead() = 0;
        virtual void ProcessWrite() = 0;
 
        template <bool IsWrite>
        static void* IdleThread(void* param);
 
        template <bool IsWrite>
        void RunLoop();
 
        volatile bool StopFlag;
        TThread ReadLoop, WriteLoop;
 
    protected:
        TPollerUnit();
 
        struct TSide {
            using TOperations =
                std::unordered_map<SOCKET,
                                   std::pair<TIntrusivePtr<TSharedDescriptor>, TFDDelegate>>;
 
            TOperations Operations;
            using TItem = TOperations::mapped_type;
            TFunnelQueue<TItem> InputQueue;
 
            void ProcessInput();
        } Read, Write;
 
        template <bool IsWrite>
        TSide& GetSide();
    };
 
}