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/* RequiredFunctions: epoll_wait */
#include "module.h"
#include <sys/epoll.h>
#include <ulimit.h>
class SocketEngineEPoll : public SocketEngineBase
{
private:
long max;
int EngineHandle;
epoll_event *events;
unsigned SocketCount;
public:
SocketEngineEPoll()
{
SocketCount = 0;
max = ulimit(4, 0);
if (max <= 0)
{
Alog() << "Can't determine maximum number of open sockets";
throw ModuleException("Can't determine maximum number of open sockets");
}
EngineHandle = epoll_create(max / 4);
if (EngineHandle == -1)
{
Alog() << "Could not initialize epoll socket engine: " << strerror(errno);
throw ModuleException(Anope::string("Could not initialize epoll socket engine: ") + strerror(errno));
}
events = new epoll_event[max];
memset(events, 0, sizeof(epoll_event) * max);
}
~SocketEngineEPoll()
{
delete [] events;
}
void AddSocket(Socket *s)
{
epoll_event ev;
memset(&ev, 0, sizeof(ev));
ev.events = EPOLLIN | EPOLLOUT;
ev.data.fd = s->GetSock();
if (epoll_ctl(EngineHandle, EPOLL_CTL_ADD, ev.data.fd, &ev) == -1)
{
Alog() << "Unable to add fd " << ev.data.fd << " to socketengine epoll: " << strerror(errno);
return;
}
Sockets.insert(std::make_pair(ev.data.fd, s));
++SocketCount;
}
void DelSocket(Socket *s)
{
epoll_event ev;
memset(&ev, 0, sizeof(ev));
ev.data.fd = s->GetSock();
if (epoll_ctl(EngineHandle, EPOLL_CTL_DEL, ev.data.fd, &ev) == -1)
{
Alog() << "Unable to delete fd " << ev.data.fd << " from socketengine epoll: " << strerror(errno);
return;
}
Sockets.erase(ev.data.fd);
--SocketCount;
}
void Process()
{
int total = epoll_wait(EngineHandle, events, max - 1, Config.ReadTimeout * 1000);
if (total == -1)
{
Alog() << "SockEngine::Process(): error " << strerror(errno);
return;
}
for (int i = 0; i < total; ++i)
{
epoll_event *ev = &events[i];
Socket *s = Sockets[ev->data.fd];
if (ev->events & (EPOLLHUP | EPOLLERR))
{
s->ProcessError();
s->SetFlag(SF_DEAD);
continue;
}
if ((ev->events & EPOLLIN) && !s->ProcessRead())
s->SetFlag(SF_DEAD);
if ((ev->events & EPOLLOUT) && !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 ModuleSocketEngineEPoll : public Module
{
SocketEngineEPoll *engine;
public:
ModuleSocketEngineEPoll(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator)
{
this->SetAuthor("Anope");
this->SetPermanent(true);
this->SetType(SOCKETENGINE);
engine = new SocketEngineEPoll();
SocketEngine = engine;
}
~ModuleSocketEngineEPoll()
{
delete engine;
SocketEngine = NULL;
}
};
MODULE_INIT(ModuleSocketEngineEPoll)
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