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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd_config.h"
#include "globals.h"
#include "inspircd.h"
#include <sys/epoll.h>
#include <vector>
#include <string>
#include "socketengine_epoll.h"
#include "helperfuncs.h"
EPollEngine::EPollEngine()
{
EngineHandle = epoll_create(MAX_DESCRIPTORS);
if (EngineHandle == -1)
{
log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
log(SPARSE,"ERROR: this is a fatal error, exiting now.");
printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
printf("ERROR: this is a fatal error, exiting now.");
Exit(0);
}
CurrentSetSize = 0;
}
EPollEngine::~EPollEngine()
{
close(EngineHandle);
}
bool EPollEngine::AddFd(int fd, bool readable, char type)
{
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
{
log(DEFAULT,"ERROR: FD of %d added above max of %d",fd,MAX_DESCRIPTORS);
return false;
}
if (GetRemainingFds() <= 1)
{
log(DEFAULT,"ERROR: System out of file descriptors!");
return false;
}
ref[fd] = type;
if (readable)
{
log(DEBUG,"Set readbit");
ref[fd] |= X_READBIT;
}
log(DEBUG,"Add socket %d",fd);
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
log(DEBUG,"epoll: Add socket to events, ep=%d socket=%d",EngineHandle,fd);
readable ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
ev.data.fd = fd;
int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
if (i < 0)
{
log(DEBUG,"epoll: List insertion failure!");
return false;
}
CurrentSetSize++;
return true;
}
bool EPollEngine::DelFd(int fd)
{
log(DEBUG,"EPollEngine::DelFd(%d)",fd);
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
return false;
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
ref[fd] && X_READBIT ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
ev.data.fd = fd;
int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
if (i < 0)
{
log(DEBUG,"epoll: List deletion failure!");
return false;
}
CurrentSetSize--;
ref[fd] = 0;
return true;
}
int EPollEngine::GetMaxFds()
{
return MAX_DESCRIPTORS;
}
int EPollEngine::GetRemainingFds()
{
return MAX_DESCRIPTORS - CurrentSetSize;
}
int EPollEngine::Wait(int* fdlist)
{
int result = 0;
int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 50);
for (int j = 0; j < i; j++)
fdlist[result++] = events[j].data.fd;
return result;
}
std::string EPollEngine::GetName()
{
return "epoll";
}
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