control.h.svn-base

UDT 4.0 based on the UDP.

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/*****************************************************************************
written by
   Yunhong Gu, last updated 07/22/2007
*****************************************************************************/

#ifndef _UDT_CONTROL_H_
#define _UDT_CONTROL_H_

#include "udt.h"
#include "common.h"

#ifdef USING_USTL
#include <ustl.h>
using namespace ustl;
#else
using namespace std;
#endif

// !nash! have to use std version of STL as uSTL's set/map doesn't provide comparator
#include <set>
#include <map>

class CUDT;

struct CHistoryBlock
{
   uint32_t m_IP[4];
   int m_iIPversion;
   uint64_t m_ullTimeStamp;
   int m_iRTT;
   int m_iBandwidth;
   int m_iLossRate;
   int m_iReorderDistance;

   CHistoryBlock() throw()
   {
      ::memset(this, 0, sizeof(CHistoryBlock));
   }
};

struct CIPComp
{
   bool operator()(const CHistoryBlock* hb1, const CHistoryBlock* hb2) const;
};

struct CTSComp
{
   bool operator()(const CHistoryBlock* hb1, const CHistoryBlock* hb2) const;
};

class CHistory
{
public:
   CHistory() throw();
   CHistory(const unsigned int& size) throw();
   ~CHistory();

public:
   bool construct() throw();

   void update(const sockaddr* addr, const int ver, const int rtt, const int bw);
   void update(const CHistoryBlock* hb);
   int lookup(const sockaddr* addr, const int ver, CHistoryBlock* hb);

private:
   void convert(const sockaddr* addr, const int ver, uint32_t* ip);

private:
   unsigned int m_uiSize;
   std::set<CHistoryBlock*, CIPComp> m_sIPIndex;
   std::set<CHistoryBlock*, CTSComp> m_sTSIndex;

   pthread_mutex_t m_Lock;
};

struct CUDTComp
{
   bool operator()(const CUDT* u1, const CUDT* u2) const;
};

class CControl
{
public:
   CControl() throw();
   ~CControl();

public:
   bool construct() throw();

   int join(CUDT* udt, const sockaddr* addr, const int ver, int& rtt, int& bw);
   void leave(CUDT* udt, const int rtt, const int bw);

private:
   CHistory* m_pHistoryRecord;
   std::map<CHistoryBlock*, std::set<CUDT*, CUDTComp>, CIPComp> m_mControlBlock;
   std::map<CUDT*, CHistoryBlock*, CUDTComp> m_mUDTIndex;

   pthread_mutex_t m_Lock;
};

#endif