C4NetIOUDP::PacketList Class Reference

#include <C4NetIO.h>

Collaboration diagram for C4NetIOUDP::PacketList:

Public Member Functions
	PacketList (unsigned int iMaxPacketCnt=~0)
	~PacketList ()
Packet *	GetPacket (unsigned int iNr)
Packet *	GetPacketFrgm (unsigned int iNr)
Packet *	GetFirstPacketComplete ()
bool	FragmentPresent (unsigned int iNr)
bool	AddPacket (Packet *pPacket)
bool	DeletePacket (Packet *pPacket)
void	ClearPackets (unsigned int iUntil)
void	Clear ()

Protected Attributes
Packet *	pFront {nullptr}
Packet *	pBack {nullptr}
unsigned int	iPacketCnt {0}
unsigned int	iMaxPacketCnt
CStdCSecEx	ListCSec

Detailed Description

Definition at line 708 of file C4NetIO.h.

Constructor & Destructor Documentation

PacketList()

C4NetIOUDP::PacketList::PacketList

(

unsigned int

iMaxPacketCnt = ~0

)

Definition at line 3048 of file C4NetIO.cpp.

        : iMaxPacketCnt(inMaxPacketCnt)
{
 
}

~PacketList()

C4NetIOUDP::PacketList::~PacketList

(

)

Definition at line 3054 of file C4NetIO.cpp.

{
    Clear();
}

Member Function Documentation

AddPacket()

bool C4NetIOUDP::PacketList::AddPacket

(

Packet *

pPacket

)

Definition at line 3094 of file C4NetIO.cpp.

{
    CStdLock ListLock(&ListCSec);
    // find insert location
    Packet *pInsertAfter = pBack, *pInsertBefore = nullptr;
    for (; pInsertAfter; pInsertBefore = pInsertAfter, pInsertAfter = pInsertAfter->Prev)
        if (pInsertAfter->GetNr() + pInsertAfter->FragmentCnt() <= pPacket->GetNr())
            break;
    // check: enough space?
    if (pInsertBefore && pInsertBefore->GetNr() < pPacket->GetNr() + pPacket->FragmentCnt())
        return false;
    // insert
    (pInsertAfter ? pInsertAfter->Next : pFront) = pPacket;
    (pInsertBefore ? pInsertBefore->Prev : pBack) = pPacket;
    pPacket->Next = pInsertBefore;
    pPacket->Prev = pInsertAfter;
    // count packets, check limit
    ++iPacketCnt;
    while (iPacketCnt > iMaxPacketCnt)
        DeletePacket(pFront);
    // ok
    return true;
}

References C4NetIOUDP::Packet::FragmentCnt(), C4NetIOUDP::Packet::GetNr(), C4NetIOUDP::Packet::Next, and C4NetIOUDP::Packet::Prev.

Referenced by C4NetIOUDP::Broadcast(), C4NetIOUDP::Peer::OnRecv(), and C4NetIOUDP::Peer::Send().

Here is the call graph for this function:

Here is the caller graph for this function:

Clear()

void C4NetIOUDP::PacketList::Clear

(

)

Definition at line 3145 of file C4NetIO.cpp.

{
    CStdLock ListLock(&ListCSec);
    while (iPacketCnt)
        DeletePacket(pFront);
}

Referenced by C4NetIOUDP::ClearMCPackets().

Here is the caller graph for this function:

ClearPackets()

void C4NetIOUDP::PacketList::ClearPackets

(

unsigned int

iUntil

)

Definition at line 3138 of file C4NetIO.cpp.

{
    CStdLock ListLock(&ListCSec);
    while (pFront && pFront->GetNr() < iUntil)
        DeletePacket(pFront);
}

Referenced by C4NetIOUDP::ClearMCPackets(), and C4NetIOUDP::Peer::OnRecv().

Here is the caller graph for this function:

DeletePacket()

bool C4NetIOUDP::PacketList::DeletePacket

(

Packet *

pPacket

)

Definition at line 3118 of file C4NetIO.cpp.

{
    CStdLock ListLock(&ListCSec);
#ifdef _DEBUG
    // check: this list?
    Packet *pPos = pPacket;
    while (pPos && pPos != pFront) pPos = pPos->Prev;
    assert(pPos);
#endif
    // unlink packet
    (pPacket->Prev ? pPacket->Prev->Next : pFront) = pPacket->Next;
    (pPacket->Next ? pPacket->Next->Prev : pBack) = pPacket->Prev;
    // delete packet
    delete pPacket;
    // decrease count
    --iPacketCnt;
    // ok
    return true;
}

References C4NetIOUDP::Packet::Next, and C4NetIOUDP::Packet::Prev.

FragmentPresent()

bool C4NetIOUDP::PacketList::FragmentPresent

(

unsigned int

iNr

)

Definition at line 3087 of file C4NetIO.cpp.

{
    CStdShareLock ListLock(&ListCSec);
    Packet *pPkt = GetPacketFrgm(iNr);
    return pPkt ? pPkt->FragmentPresent(iNr - pPkt->GetNr()) : false;
}

References C4NetIOUDP::Packet::FragmentPresent(), and C4NetIOUDP::Packet::GetNr().

Here is the call graph for this function:

GetFirstPacketComplete()

C4NetIOUDP::Packet * C4NetIOUDP::PacketList::GetFirstPacketComplete

(

)

Definition at line 3081 of file C4NetIO.cpp.

{
    CStdShareLock ListLock(&ListCSec);
    return pFront && pFront->Complete() ? pFront : nullptr;
}

GetPacket()

C4NetIOUDP::Packet * C4NetIOUDP::PacketList::GetPacket

(

unsigned int

iNr

)

Definition at line 3059 of file C4NetIO.cpp.

{
    CStdShareLock ListLock(&ListCSec);
    for (Packet *pPkt = pBack; pPkt; pPkt = pPkt->Prev)
        if (pPkt->GetNr() == iNr)
            return pPkt;
        else if (pPkt->GetNr() < iNr)
            return nullptr;
    return nullptr;
}

References C4NetIOUDP::Packet::Prev.

Referenced by C4NetIOUDP::Peer::OnRecv().

Here is the caller graph for this function:

GetPacketFrgm()

C4NetIOUDP::Packet * C4NetIOUDP::PacketList::GetPacketFrgm

(

unsigned int

iNr

)

Definition at line 3070 of file C4NetIO.cpp.

{
    CStdShareLock ListLock(&ListCSec);
    for (Packet *pPkt = pBack; pPkt; pPkt = pPkt->Prev)
        if (pPkt->GetNr() <= iNr && pPkt->GetNr() + pPkt->FragmentCnt() > iNr)
            return pPkt;
        else if (pPkt->GetNr() < iNr)
            return nullptr;
    return nullptr;
}

References C4NetIOUDP::Packet::Prev.

Member Data Documentation

iMaxPacketCnt

unsigned int C4NetIOUDP::PacketList::iMaxPacketCnt

protected

Definition at line 718 of file C4NetIO.h.

iPacketCnt

unsigned int C4NetIOUDP::PacketList::iPacketCnt {0}

protected

Definition at line 718 of file C4NetIO.h.

ListCSec

CStdCSecEx C4NetIOUDP::PacketList::ListCSec

protected

Definition at line 720 of file C4NetIO.h.

pBack

Packet * C4NetIOUDP::PacketList::pBack {nullptr}

protected

Definition at line 716 of file C4NetIO.h.

pFront

Packet* C4NetIOUDP::PacketList::pFront {nullptr}

protected

Definition at line 716 of file C4NetIO.h.

---

The documentation for this class was generated from the following files:

• C4NetIO.h
• C4NetIO.cpp