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#include "module.h"
class SocketEngineSelect : public SocketEngineBase
{
private:
/* Max Read FD */
int MaxFD;
/* Read FDs */
fd_set ReadFDs;
/* Write FDs */
fd_set WriteFDs;
public:
SocketEngineSelect()
{
MaxFD = 0;
FD_ZERO(&ReadFDs);
FD_ZERO(&WriteFDs);
}
~SocketEngineSelect()
{
FD_ZERO(&ReadFDs);
FD_ZERO(&WriteFDs);
}
void AddSocket(Socket *s)
{
if (s->GetSock() > MaxFD)
MaxFD = s->GetSock();
FD_SET(s->GetSock(), &ReadFDs);
Sockets.insert(std::make_pair(s->GetSock(), s));
}
void DelSocket(Socket *s)
{
if (s->GetSock() == MaxFD)
--MaxFD;
FD_CLR(s->GetSock(), &ReadFDs);
FD_CLR(s->GetSock(), &WriteFDs);
Sockets.erase(s->GetSock());
}
void MarkWriteable(Socket *s)
{
FD_SET(s->GetSock(), &WriteFDs);
}
void ClearWriteable(Socket *s)
{
FD_CLR(s->GetSock(), &WriteFDs);
}
void Process()
{
fd_set rfdset = ReadFDs, wfdset = WriteFDs, efdset = ReadFDs;
timeval tval;
tval.tv_sec = Config.ReadTimeout;
tval.tv_usec = 0;
int sresult = select(MaxFD + 1, &rfdset, &wfdset, &efdset, &tval);
if (sresult == -1)
{
#ifdef WIN32
errno = WSAGetLastError();
#endif
Alog() << "SockEngine::Process(): error" << strerror(errno);
}
else if (sresult)
{
for (std::map<int, Socket *>::const_iterator it = Sockets.begin(), it_end = Sockets.end(); it != it_end; ++it)
{
Socket *s = it->second;
if (FD_ISSET(s->GetSock(), &efdset))
{
s->ProcessError();
s->SetFlag(SF_DEAD);
continue;
}
if (FD_ISSET(s->GetSock(), &rfdset))
{
if (!s->ProcessRead())
{
s->SetFlag(SF_DEAD);
}
}
if (FD_ISSET(s->GetSock(), &wfdset))
{
if (!s->ProcessWrite())
{
s->SetFlag(SF_DEAD);
}
}
}
for (std::map<int, Socket *>::iterator it = Sockets.begin(), it_end = Sockets.end(); it != it_end;)
{
Socket *s = it->second;
++it;
if (s->HasFlag(SF_DEAD))
{
delete s;
}
}
}
}
};
class ModuleSocketEngineSelect : public Module
{
SocketEngineSelect *engine;
public:
ModuleSocketEngineSelect(const std::string &modname, const std::string &creator) : Module(modname, creator)
{
this->SetPermanent(true);
this->SetType(SOCKETENGINE);
engine = new SocketEngineSelect();
SocketEngine = engine;
}
~ModuleSocketEngineSelect()
{
delete engine;
SocketEngine = NULL;
}
};
MODULE_INIT(ModuleSocketEngineSelect)
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