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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* Inspire 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"
#ifdef USE_EPOLL
#include <sys/epoll.h>
#endif
#ifdef USE_KQUEUE
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>
#endif
#include <vector>
#include <string>
#include "socketengine.h"
char ref[MAX_DESCRIPTORS];
SocketEngine::SocketEngine()
{
log(DEBUG,"SocketEngine::SocketEngine()");
#ifdef USE_EPOLL
EngineHandle = epoll_create(MAX_DESCRIPTORS);
#endif
#ifdef USE_KQUEUE
EngineHandle = kqueue();
#endif
CurrentSetSize = 0;
}
SocketEngine::~SocketEngine()
{
log(DEBUG,"SocketEngine::~SocketEngine()");
#ifdef USE_EPOLL
close(EngineHandle);
#endif
#ifdef USE_KQUEUE
close(EngineHandle);
#endif
}
char SocketEngine::GetType(int fd)
{
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
return X_EMPTY_SLOT;
/* Mask off the top bit used for 'read/write' state */
return (ref[fd] & ~0x80);
}
bool SocketEngine::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;
}
#ifdef USE_SELECT
fds[fd] = fd;
#endif
ref[fd] = type;
if (readable)
{
log(DEBUG,"Set readbit");
ref[fd] |= X_READBIT;
}
log(DEBUG,"Add socket %d",fd);
#ifdef USE_EPOLL
struct epoll_event ev;
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;
}
#endif
#ifdef USE_KQUEUE
struct kevent ke;
log(DEBUG,"kqueue: Add socket to events, kq=%d socket=%d",EngineHandle,fd);
EV_SET(&ke, fd, readable ? EVFILT_READ : EVFILT_WRITE, EV_ADD, 0, 0, NULL);
int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
if (i == -1)
{
log(DEBUG,"kqueue: List insertion failure!");
return false;
}
#endif
CurrentSetSize++;
return true;
}
bool SocketEngine::DelFd(int fd)
{
log(DEBUG,"SocketEngine::DelFd(%d)",fd);
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
return false;
#ifdef USE_SELECT
std::map<int,int>::iterator t = fds.find(fd);
if (t != fds.end())
{
fds.erase(t);
log(DEBUG,"Deleted fd %d",fd);
}
#endif
#ifdef USE_KQUEUE
struct kevent ke;
EV_SET(&ke, fd, ref[fd] & X_READBIT ? EVFILT_READ : EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
int i = kevent(EngineHandle, &ke, 1, 0, 0, NULL);
if (i == -1)
{
log(DEBUG,"kqueue: Failed to remove socket from queue!");
return false;
}
#endif
#ifdef USE_EPOLL
struct epoll_event ev;
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;
}
#endif
CurrentSetSize--;
ref[fd] = 0;
return true;
}
int SocketEngine::GetMaxFds()
{
#ifdef USE_SELECT
return FD_SETSIZE;
#endif
#ifdef USE_KQUEUE
return MAX_DESCRIPTORS;
#endif
#ifdef USE_EPOLL
return MAX_DESCRIPTORS;
#endif
}
int SocketEngine::GetRemainingFds()
{
#ifdef USE_SELECT
return FD_SETSIZE - CurrentSetSize;
#endif
#ifdef USE_KQUEUE
return MAX_DESCRIPTORS - CurrentSetSize;
#endif
#ifdef USE_EPOLL
return MAX_DESCRIPTORS - CurrentSetSize;
#endif
}
int SocketEngine::Wait(int* fdlist)
{
int result = 0;
#ifdef USE_SELECT
FD_ZERO(&wfdset);
FD_ZERO(&rfdset);
timeval tval;
int sresult;
for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)
{
if (ref[a->second] & X_READBIT)
{
FD_SET (a->second, &rfdset);
}
else
{
FD_SET (a->second, &wfdset);
}
}
tval.tv_sec = 0;
tval.tv_usec = 100L;
sresult = select(FD_SETSIZE, &rfdset, &wfdset, NULL, &tval);
if (sresult > 0)
{
for (std::map<int,int>::iterator a = fds.begin(); a != fds.end(); a++)
{
if ((FD_ISSET (a->second, &rfdset)) || (FD_ISSET (a->second, &wfdset)))
fdlist[result++] = a->second;
}
}
#endif
#ifdef USE_KQUEUE
ts.tv_nsec = 10000L;
ts.tv_sec = 0;
int i = kevent(EngineHandle, NULL, 0, &ke_list[0], MAX_DESCRIPTORS, &ts);
for (int j = 0; j < i; j++)
fdlist[result++] = ke_list[j].ident;
#endif
#ifdef USE_EPOLL
int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 100);
for (int j = 0; j < i; j++)
fdlist[result++] = events[j].data.fd;
#endif
return result;
}
std::string SocketEngine::GetName()
{
#ifdef USE_SELECT
return "select";
#endif
#ifdef USE_KQUEUE
return "kqueue";
#endif
#ifdef USE_EPOLL
return "epoll";
#endif
return "misconfigured";
}
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