llpacketring.h

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#ifndef LL_LLPACKETRING_H
#define LL_LLPACKETRING_H

#include <queue>

#include "llpacketbuffer.h"
#include "linked_lists.h"
#include "llhost.h"
#include "net.h"
#include "llthrottle.h"


class LLPacketRing
{
public:
        LLPacketRing();         
    ~LLPacketRing();

        void free();

        void dropPackets(U32);  
        void setDropPercentage (F32 percent_to_drop);
        void setUseInThrottle(const BOOL use_throttle);
        void setUseOutThrottle(const BOOL use_throttle);
        void setInBandwidth(const F32 bps);
        void setOutBandwidth(const F32 bps);
        S32  receivePacket (S32 socket, char *datap);
        S32  receiveFromRing (S32 socket, char *datap);

        BOOL sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host);

        inline LLHost getLastSender();

        S32 getAndResetActualInBits()                           { S32 bits = mActualBitsIn; mActualBitsIn = 0; return bits;}
        S32 getAndResetActualOutBits()                          { S32 bits = mActualBitsOut; mActualBitsOut = 0; return bits;}
protected:
        BOOL mUseInThrottle;
        BOOL mUseOutThrottle;
        
        // For simulating a lower-bandwidth connection - BPS
        LLThrottle mInThrottle;
        LLThrottle mOutThrottle;

        S32 mActualBitsIn;
        S32 mActualBitsOut;
        S32 mMaxBufferLength;                   // How much data can we queue up before dropping data.
        S32 mInBufferLength;                    // Current incoming buffer length
        S32 mOutBufferLength;                   // Current outgoing buffer length

        F32 mDropPercentage;                    // % of packets to drop
        U32 mPacketsToDrop;                             // drop next n packets

        std::queue<LLPacketBuffer *> mReceiveQueue;
        std::queue<LLPacketBuffer *> mSendQueue;

        LLHost mLastSender;
};


inline LLHost LLPacketRing::getLastSender()
{
        return mLastSender;
}

#endif

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