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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2009 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "exitcodes.h"
#include <port.h>
#include "socketengines/socketengine_ports.h"
#include <ulimit.h>
PortsEngine::PortsEngine()
{
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);
}
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;
}
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 PortsEngine::AddFd(EventHandler* eh, int event_mask)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > GetMaxFds() - 1))
return false;
if (ref[fd])
return false;
ref[fd] = eh;
SocketEngine::SetEventMask(eh, event_mask);
port_associate(EngineHandle, PORT_SOURCE_FD, fd, mask_to_events(event_mask), eh);
ServerInstance->Logs->Log("SOCKET",DEBUG,"New file descriptor: %d", fd);
CurrentSetSize++;
return true;
}
void PortsEngine::WantWrite(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);
}
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::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;
EventHandler* eh = ref[fd];
if (eh)
{
int mask = eh->GetEventMask();
if (events[i].portev_events & POLLWRNORM)
mask &= ~(FD_WRITE_WILL_BLOCK | FD_WANT_FAST_WRITE | FD_WANT_SINGLE_WRITE);
if (events[i].portev_events & POLLRDNORM)
mask &= ~FD_READ_WILL_BLOCK;
// reinsert port for next time around, pretending to be one-shot for writes
SetEventMask(ev, mask);
port_associate(EngineHandle, PORT_SOURCE_FD, fd, mask_to_events(mask), eh);
if (events[i].portev_events & POLLRDNORM)
{
ReadEvents++;
eh->HandleEvent(EVENT_READ);
}
if (events[i].portev_events & POLLWRNORM)
{
WriteEvents++;
eh->HandleEvent(EVENT_WRITE);
}
}
}
default:
break;
}
}
return i;
}
std::string PortsEngine::GetName()
{
return "ports";
}
|
