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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2007-2008 Craig Edwards <craigedwards@brainbox.cc>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "exitcodes.h"
#include <port.h>
#include "socketengines/socketengine_ports.h"
#include <ulimit.h>
PortsEngine::PortsEngine(InspIRCd* Instance) : SocketEngine(Instance)
{
MAX_DESCRIPTORS = 0;
EngineHandle = port_create();
if (EngineHandle == -1)
{
ServerInstance->Logs->Log("SOCKET",SPARSE,"ERROR: Could not initialize socket engine: %s", strerror(errno));
ServerInstance->Logs->Log("SOCKET",SPARSE,"ERROR: This is a fatal error, exiting now.");
printf("ERROR: Could not initialize socket engine: %s\n", strerror(errno));
printf("ERROR: This is a fatal error, exiting now.\n");
ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
}
CurrentSetSize = 0;
ref = new EventHandler* [GetMaxFds()];
events = new port_event_t[GetMaxFds()];
memset(ref, 0, GetMaxFds() * sizeof(EventHandler*));
}
PortsEngine::~PortsEngine()
{
this->Close(EngineHandle);
delete[] ref;
delete[] events;
}
bool PortsEngine::AddFd(EventHandler* eh)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > GetMaxFds() - 1))
return false;
if (GetRemainingFds() <= 1)
return false;
if (ref[fd])
return false;
ref[fd] = eh;
port_associate(EngineHandle, PORT_SOURCE_FD, fd, eh->Readable() ? POLLRDNORM : POLLWRNORM, eh);
ServerInstance->Logs->Log("SOCKET",DEBUG,"New file descriptor: %d", fd);
CurrentSetSize++;
return true;
}
void PortsEngine::WantWrite(EventHandler* eh)
{
port_associate(EngineHandle, PORT_SOURCE_FD, eh->GetFd(), POLLRDNORM | POLLWRNORM, eh);
}
bool PortsEngine::DelFd(EventHandler* eh, bool force)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > GetMaxFds() - 1))
return false;
port_dissociate(EngineHandle, PORT_SOURCE_FD, fd);
CurrentSetSize--;
ref[fd] = NULL;
ServerInstance->Logs->Log("SOCKET",DEBUG,"Remove file descriptor: %d", fd);
return true;
}
int PortsEngine::GetMaxFds()
{
if (MAX_DESCRIPTORS)
return MAX_DESCRIPTORS;
int max = ulimit(4, 0);
if (max > 0)
{
MAX_DESCRIPTORS = max;
return max;
}
else
{
ServerInstance->Logs->Log("SOCKET", DEFAULT, "ERROR: Can't determine maximum number of open sockets!");
printf("ERROR: Can't determine maximum number of open sockets!\n");
ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
}
#include <ulimit.h>
}
int PortsEngine::GetRemainingFds()
{
return GetMaxFds() - CurrentSetSize;
}
int PortsEngine::DispatchEvents()
{
struct timespec poll_time;
poll_time.tv_sec = 1;
poll_time.tv_nsec = 0;
unsigned int nget = 1; // used to denote a retrieve request.
int i = port_getn(EngineHandle, this->events, GetMaxFds() - 1, &nget, &poll_time);
// first handle an error condition
if (i == -1)
return i;
TotalEvents += nget;
for (i = 0; i < nget; i++)
{
switch (this->events[i].portev_source)
{
case PORT_SOURCE_FD:
{
int fd = this->events[i].portev_object;
if (ref[fd])
{
// reinsert port for next time around
port_associate(EngineHandle, PORT_SOURCE_FD, fd, POLLRDNORM, ref[fd]);
if ((this->events[i].portev_events & POLLRDNORM))
ReadEvents++;
else
WriteEvents++;
ref[fd]->HandleEvent((this->events[i].portev_events & POLLRDNORM) ? EVENT_READ : EVENT_WRITE);
}
}
default:
break;
}
}
return i;
}
std::string PortsEngine::GetName()
{
return "ports";
}
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