www.pudn.com > udt.sdk.4.1.win32.zip > control.cpp
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/*****************************************************************************
written by
Yunhong Gu, last updated 07/17/2007
*****************************************************************************/
#ifdef WIN32
#include
#include
#endif
#include
#include "control.h"
#include "core.h"
using namespace std;
bool CIPComp::operator()(const CHistoryBlock* hb1, const CHistoryBlock* hb2) const
{
if (hb1->m_iIPversion != hb2->m_iIPversion)
return (hb1->m_iIPversion < hb2->m_iIPversion);
else if (hb1->m_iIPversion == AF_INET)
return (hb1->m_IP[0] > hb2->m_IP[0]);
else
{
for (int i = 0; i < 4; ++ i)
{
if (hb1->m_IP[i] != hb2->m_IP[i])
return (hb1->m_IP[i] > hb2->m_IP[i]);
}
return false;
}
}
bool CTSComp::operator()(const CHistoryBlock* hb1, const CHistoryBlock* hb2) const
{
return (hb1->m_ullTimeStamp > hb2->m_ullTimeStamp);
}
CHistory::CHistory():
m_uiSize(1024)
{
#ifndef WIN32
pthread_mutex_init(&m_Lock, NULL);
#else
m_Lock = CreateMutex(NULL, false, NULL);
#endif
}
CHistory::CHistory(const unsigned int& size):
m_uiSize(size)
{
#ifndef WIN32
pthread_mutex_init(&m_Lock, NULL);
#else
m_Lock = CreateMutex(NULL, false, NULL);
#endif
}
CHistory::~CHistory()
{
for (set::iterator i = m_sTSIndex.begin(); i != m_sTSIndex.end(); ++ i)
delete *i;
#ifndef WIN32
pthread_mutex_destroy(&m_Lock);
#else
CloseHandle(m_Lock);
#endif
}
void CHistory::update(const sockaddr* addr, const int& ver, const int& rtt, const int& bw)
{
CGuard hbguard(m_Lock);
CHistoryBlock* hb = new CHistoryBlock;
convert(addr, ver, hb->m_IP);
hb->m_iIPversion = ver;
set::iterator i = m_sIPIndex.find(hb);
if (i != m_sIPIndex.end())
{
m_sTSIndex.erase(*i);
delete *i;
m_sIPIndex.erase(i);
}
hb->m_iRTT = rtt;
hb->m_iBandwidth = bw;
hb->m_ullTimeStamp = CTimer::getTime();
m_sIPIndex.insert(hb);
m_sTSIndex.insert(hb);
if (m_sTSIndex.size() > m_uiSize)
{
hb = *m_sTSIndex.begin();
m_sIPIndex.erase(hb);
m_sTSIndex.erase(m_sTSIndex.begin());
delete hb;
}
}
void CHistory::update(const CHistoryBlock* info)
{
CGuard hbguard(m_Lock);
CHistoryBlock* hb = new CHistoryBlock;
memcpy((char*)hb, (char*)info, sizeof(CHistoryBlock));
set::iterator i = m_sIPIndex.find(hb);
if (i != m_sIPIndex.end())
{
m_sTSIndex.erase(*i);
delete *i;
m_sIPIndex.erase(i);
}
hb->m_ullTimeStamp = CTimer::getTime();
m_sIPIndex.insert(hb);
m_sTSIndex.insert(hb);
if (m_sTSIndex.size() > m_uiSize)
{
hb = *m_sTSIndex.begin();
m_sIPIndex.erase(hb);
m_sTSIndex.erase(m_sTSIndex.begin());
delete hb;
}
}
int CHistory::lookup(const sockaddr* addr, const int& ver, CHistoryBlock* hb)
{
CGuard hbguard(m_Lock);
convert(addr, ver, hb->m_IP);
hb->m_iIPversion = ver;
set::iterator i = m_sIPIndex.find(hb);
if (i == m_sIPIndex.end())
return -1;
hb->m_ullTimeStamp = (*i)->m_ullTimeStamp;
hb->m_iRTT = (*i)->m_iRTT;
hb->m_iBandwidth = (*i)->m_iBandwidth;
return 1;
}
void CHistory::convert(const sockaddr* addr, const int& ver, uint32_t* ip)
{
if (ver == AF_INET)
{
ip[0] = ((sockaddr_in*)addr)->sin_addr.s_addr;
ip[1] = ip[2] = ip[3] = 0;
}
else
{
memcpy((char*)ip, (char*)((sockaddr_in6*)addr)->sin6_addr.s6_addr, 16);
}
}
//
bool CUDTComp::operator()(const CUDT* u1, const CUDT* u2) const
{
return (u1->m_SocketID > u2->m_SocketID);
}
CControl::CControl()
{
#ifndef WIN32
pthread_mutex_init(&m_Lock, NULL);
#else
m_Lock = CreateMutex(NULL, false, NULL);
#endif
m_pHistoryRecord = new CHistory;
}
CControl::~CControl()
{
#ifndef WIN32
pthread_mutex_destroy(&m_Lock);
#else
CloseHandle(m_Lock);
#endif
delete m_pHistoryRecord;
}
int CControl::join(CUDT* udt, const sockaddr* addr, const int& ver, int& rtt, int& bw)
{
CGuard ctrlguard(m_Lock);
CHistoryBlock* hb = new CHistoryBlock;
int found = m_pHistoryRecord->lookup(addr, ver, hb);
if (found > 0)
{
rtt = hb->m_iRTT;
bw = hb->m_iBandwidth;
}
map, CIPComp>::iterator i = m_mControlBlock.find(hb);
if (i == m_mControlBlock.end())
{
set tmp;
m_mControlBlock[hb] = tmp;
m_mControlBlock[hb].insert(udt);
m_mUDTIndex[udt] = hb;
}
else
{
i->second.insert(udt);
m_mUDTIndex[udt] = i->first;
delete hb;
}
if (found < 0)
return -1;
return 1;
}
void CControl::leave(CUDT* udt, const int& rtt, const int& bw)
{
CGuard ctrlguard(m_Lock);
CHistoryBlock* hb = m_mUDTIndex[udt];
map, CIPComp>::iterator i = m_mControlBlock.find(hb);
hb->m_iRTT = rtt;
hb->m_iBandwidth = bw;
m_pHistoryRecord->update(hb);
i->second.erase(udt);
if (i->second.empty())
{
m_mControlBlock.erase(i);
delete hb;
}
m_mUDTIndex.erase(udt);
}