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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* 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"
#ifndef __sun
# error You need Solaris 10 or later to make use of this code.
#endif
#include <vector>
#include <string>
#include <map>
#include "inspircd.h"
#include "socketengine.h"
#include <port.h>
#include <iostream>
#include <ulimit.h>
/** A specialisation of the SocketEngine class, designed to use solaris 10 I/O completion ports
*/
namespace
{
/** These are used by ports to hold socket events
*/
std::vector<port_event_t> events(16);
int EngineHandle;
}
/** Initialize ports engine
*/
void SocketEngine::Init()
{
int max = ulimit(4, 0);
if (max > 0)
{
MAX_DESCRIPTORS = max;
}
else
{
ServerInstance->Logs->Log("SOCKET", LOG_DEFAULT, "ERROR: Can't determine maximum number of open sockets!");
std::cout << "ERROR: Can't determine maximum number of open sockets!" << std::endl;
ServerInstance->QuickExit(EXIT_STATUS_SOCKETENGINE);
}
EngineHandle = port_create();
if (EngineHandle == -1)
{
ServerInstance->Logs->Log("SOCKET", LOG_SPARSE, "ERROR: Could not initialize socket engine: %s", strerror(errno));
ServerInstance->Logs->Log("SOCKET", LOG_SPARSE, "ERROR: This is a fatal error, exiting now.");
std::cout << "ERROR: Could not initialize socket engine: " << strerror(errno) << std::endl;
std::cout << "ERROR: This is a fatal error, exiting now." << std::endl;
ServerInstance->QuickExit(EXIT_STATUS_SOCKETENGINE);
}
}
/** Shutdown the ports engine
*/
void SocketEngine::Deinit()
{
SocketEngine::Close(EngineHandle);
}
void SocketEngine::RecoverFromFork()
{
}
static int mask_to_events(int event_mask)
{
int rv = 0;
if (event_mask & (FD_WANT_POLL_READ | FD_WANT_FAST_READ))
rv |= POLLRDNORM;
if (event_mask & (FD_WANT_POLL_WRITE | FD_WANT_FAST_WRITE | FD_WANT_SINGLE_WRITE))
rv |= POLLWRNORM;
return rv;
}
bool SocketEngine::AddFd(EventHandler* eh, int event_mask)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > GetMaxFds() - 1))
return false;
if (!SocketEngine::AddFdRef(eh))
return false;
eh->SetEventMask(event_mask);
port_associate(EngineHandle, PORT_SOURCE_FD, fd, mask_to_events(event_mask), eh);
ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "New file descriptor: %d", fd);
ResizeDouble(events);
return true;
}
void SocketEngine::OnSetEvent(EventHandler* eh, int old_mask, int new_mask)
{
if (mask_to_events(new_mask) != mask_to_events(old_mask))
port_associate(EngineHandle, PORT_SOURCE_FD, eh->GetFd(), mask_to_events(new_mask), eh);
}
void SocketEngine::DelFd(EventHandler* eh)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > GetMaxFds() - 1))
return;
port_dissociate(EngineHandle, PORT_SOURCE_FD, fd);
SocketEngine::DelFdRef(eh);
ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Remove file descriptor: %d", fd);
}
int SocketEngine::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 ret = port_getn(EngineHandle, &events[0], events.size(), &nget, &poll_time);
ServerInstance->UpdateTime();
// first handle an error condition
if (ret == -1)
return -1;
stats.TotalEvents += nget;
unsigned int i;
for (i = 0; i < nget; i++)
{
port_event_t& ev = events[i];
if (ev.portev_source != PORT_SOURCE_FD)
continue;
// Copy these in case the vector gets resized and ev invalidated
const int fd = ev.portev_object;
const int portev_events = ev.portev_events;
EventHandler* eh = static_cast<EventHandler*>(ev.portev_user);
if (eh->GetFd() < 0)
continue;
int mask = eh->GetEventMask();
if (portev_events & POLLWRNORM)
mask &= ~(FD_WRITE_WILL_BLOCK | FD_WANT_FAST_WRITE | FD_WANT_SINGLE_WRITE);
if (portev_events & POLLRDNORM)
mask &= ~FD_READ_WILL_BLOCK;
// reinsert port for next time around, pretending to be one-shot for writes
eh->SetEventMask(mask);
port_associate(EngineHandle, PORT_SOURCE_FD, fd, mask_to_events(mask), eh);
if (portev_events & POLLRDNORM)
{
stats.ReadEvents++;
eh->HandleEvent(EVENT_READ);
if (eh != GetRef(fd))
continue;
}
if (portev_events & POLLWRNORM)
{
stats.WriteEvents++;
eh->HandleEvent(EVENT_WRITE);
}
}
return (int)i;
}
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