1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 #include "socketengines/socketengine_iocp.h"
15 #include "exitcodes.h"
18 IOCPEngine::IOCPEngine(InspIRCd * Instance) : SocketEngine(Instance)
20 MAX_DESCRIPTORS = 10240;
22 /* Create completion port */
23 m_completionPort = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)0, 0);
25 if (!m_completionPort)
27 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
28 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: this is a fatal error, exiting now.");
29 printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.\n");
30 printf("ERROR: this is a fatal error, exiting now.\n");
31 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
34 /* Null variables out. */
37 MAX_DESCRIPTORS = 10240;
38 ref = new EventHandler* [10240];
39 memset(ref, 0, sizeof(EventHandler*) * MAX_DESCRIPTORS);
42 IOCPEngine::~IOCPEngine()
44 /* Clean up winsock and close completion port */
45 CloseHandle(m_completionPort);
50 bool IOCPEngine::AddFd(EventHandler* eh)
52 /* Does it at least look valid? */
56 int* fake_fd = new int(GenerateFd(eh->GetFd()));
58 int opt_len = sizeof(int);
61 if ((*fake_fd < 0) || (*fake_fd > MAX_DESCRIPTORS))
67 /* Already an entry here */
74 /* are we a listen socket? */
75 getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len);
77 /* set up the read event so the socket can actually receive data :P */
78 eh->Extend("internal_fd", fake_fd);
80 unsigned long completion_key = (ULONG_PTR)*fake_fd;
81 /* assign the socket to the completion port */
82 if (!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, completion_key, 0))
85 /* setup initial events */
92 ServerInstance->Logs->Log("SOCKET",DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
94 /* post a write event if there is data to be written */
98 /* we're all good =) */
101 m_binding.insert( std::map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
105 /* Ohshi-, map::insert failed :/ */
115 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
122 if (!eh->GetExt("internal_fd", fake_fd))
125 int fd = eh->GetFd();
127 void* m_readEvent = NULL;
128 void* m_writeEvent = NULL;
129 void* m_acceptEvent = NULL;
131 ServerInstance->Logs->Log("SOCKET",DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
133 /* Cancel pending i/o operations. */
134 if (CancelIo((HANDLE)fd) == FALSE)
137 /* Free the buffer, and delete the event. */
138 if (eh->GetExt("windows_readevent", m_readEvent))
140 if(((Overlapped*)m_readEvent)->m_params != 0)
141 delete ((udp_overlap*)((Overlapped*)m_readEvent)->m_params);
143 delete ((Overlapped*)m_readEvent);
144 eh->Shrink("windows_readevent");
147 if(eh->GetExt("windows_writeevent", m_writeEvent))
149 delete ((Overlapped*)m_writeEvent);
150 eh->Shrink("windows_writeevent");
153 if(eh->GetExt("windows_acceptevent", m_acceptEvent))
155 delete ((accept_overlap*)((Overlapped*)m_acceptEvent)->m_params);
156 delete ((Overlapped*)m_acceptEvent);
157 eh->Shrink("windows_accepevent");
162 m_binding.erase(eh->GetFd());
165 eh->Shrink("internal_fd");
167 /* decrement set size */
174 void IOCPEngine::WantWrite(EventHandler* eh)
179 void* m_writeEvent = NULL;
182 if (!eh->GetExt("internal_fd", fake_fd))
185 /* Post event - write begin */
186 if(!eh->GetExt("windows_writeevent", m_writeEvent))
188 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
189 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
190 eh->Shrink("windows_writeevent");
191 eh->Extend("windows_writeevent",ov);
192 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
196 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
202 if (!eh->GetExt("internal_fd", fake_fd))
205 Overlapped * ov = new Overlapped(type, param);
206 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
207 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
210 void IOCPEngine::PostReadEvent(EventHandler * eh)
215 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
220 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
221 * its slower, but it saves modifying all network code.
226 /* determine socket type. */
228 int sock_len = sizeof(DWORD);
229 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
232 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
238 case SOCK_DGRAM: /* UDP Socket */
240 udp_overlap * uv = new udp_overlap;
241 uv->udp_sockaddr_len = sizeof(sockaddr);
242 buf.buf = (char*)uv->udp_buffer;
243 buf.len = sizeof(uv->udp_buffer);
244 ov->m_params = (unsigned long)uv;
245 if(WSARecvFrom(eh->GetFd(), &buf, 1, &uv->udp_len, &flags, uv->udp_sockaddr, (LPINT)&uv->udp_sockaddr_len, &ov->m_overlap, 0))
247 int err = WSAGetLastError();
248 if(err != WSA_IO_PENDING)
251 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
258 case SOCK_STREAM: /* TCP Socket */
260 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
262 if(WSAGetLastError() != WSA_IO_PENDING)
265 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
274 printf("unknwon socket type: %u\n", sock_type);
279 eh->Extend("windows_readevent", ov);
282 int IOCPEngine::DispatchEvents()
285 LPOVERLAPPED overlap;
290 unsigned long bytes_recv;
292 while (GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
294 if (intfd > (unsigned long)MAX_DESCRIPTORS)
297 // woot, we got an event on a socket :P
299 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
304 void* m_readEvent = NULL;
305 void* m_writeEvent = NULL;
307 eh->GetExt("windows_readevent", m_readEvent);
308 eh->GetExt("windows_writeevent", m_writeEvent);
314 case SOCKET_IO_EVENT_WRITE_READY:
317 eh->Shrink("windows_writeevent");
318 eh->HandleEvent(EVENT_WRITE, 0);
322 case SOCKET_IO_EVENT_READ_READY:
327 // if we had params, it means we are a udp socket with a udp_overlap pointer in this long.
328 udp_overlap * uv = (udp_overlap*)ov->m_params;
331 eh->Shrink("windows_readevent");
332 eh->HandleEvent(EVENT_READ, 0);
339 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
340 eh->Shrink("windows_readevent");
341 if(ret != 0 || bytes_recv == 0)
344 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
348 eh->HandleEvent(EVENT_READ, 0);
355 case SOCKET_IO_EVENT_ACCEPT:
357 /* this is kinda messy.. :/ */
359 eh->HandleEvent(EVENT_READ, ov->m_params);
360 delete ((accept_overlap*)ov->m_params);
361 eh->Shrink("windows_acceptevent");
366 case SOCKET_IO_EVENT_ERROR:
369 eh->HandleEvent(EVENT_ERROR, ov->m_params);
380 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
387 struct linger linger = { 0 };
389 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
391 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
392 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
395 setsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&linger,sizeof(linger));
396 ioctlsocket(fd, FIONBIO, &arg);
398 int len = sizeof(sockaddr_in) + 16;
400 accept_overlap* ao = new accept_overlap;
401 memset(ao->buf, 0, 1024);
404 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
405 eh->Extend("windows_acceptevent", ov);
407 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
409 int err = WSAGetLastError();
410 if(err != WSA_IO_PENDING)
412 printf("PostAcceptEvent err: %d\n", err);
418 std::string IOCPEngine::GetName()
423 EventHandler * IOCPEngine::GetRef(int fd)
425 std::map<int, EventHandler*>::iterator itr = m_binding.find(fd);
426 return (itr == m_binding.end()) ? 0 : itr->second;
429 bool IOCPEngine::HasFd(int fd)
431 return (GetRef(fd) != 0);
434 bool IOCPEngine::BoundsCheckFd(EventHandler* eh)
437 if (!eh || eh->GetFd() < 0)
440 if(!eh->GetExt("internal_fd", internal_fd))
443 if(*internal_fd > MAX_DESCRIPTORS)
449 EventHandler * IOCPEngine::GetIntRef(int fd)
451 if(fd < 0 || fd > MAX_DESCRIPTORS)
456 int IOCPEngine::Accept(EventHandler* fd, sockaddr *addr, socklen_t *addrlen)
458 //SOCKET s = fd->GetFd();
460 Overlapped* acceptevent = NULL;
461 if (!fd->GetExt("windows_acceptevent", acceptevent))
462 /* Shit, no accept event on this socket! :( */
465 Overlapped* ovl = acceptevent;
466 accept_overlap* ov = (accept_overlap*)ovl->m_params;
468 //sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
469 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
471 memcpy(addr, client_address, sizeof(sockaddr_in));
472 *addrlen = sizeof(sockaddr_in);
477 int IOCPEngine::GetSockName(EventHandler* fd, sockaddr *name, socklen_t* namelen)
479 Overlapped* ovl = NULL;
481 if (!fd->GetExt("windows_acceptevent", ovl))
484 accept_overlap* ov = (accept_overlap*)ovl->m_params;
486 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
487 //sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
489 memcpy(name, server_address, sizeof(sockaddr_in));
490 *namelen = sizeof(sockaddr_in);
495 int IOCPEngine::RecvFrom(EventHandler* fd, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen)
497 this->UpdateStats(len, 0);
498 udp_overlap * ov = NULL;
499 if (!fd->GetExt("windows_readevent", ov))
501 memcpy(buf, ov->udp_buffer, ov->udp_len);
502 memcpy(from, ov->udp_sockaddr, *fromlen);
506 int IOCPEngine::Blocking(int fd)
508 unsigned long opt = 0;
509 return ioctlsocket(fd, FIONBIO, &opt);
512 int IOCPEngine::NonBlocking(int fd)
514 unsigned long opt = 1;
515 return ioctlsocket(fd, FIONBIO, &opt);
518 int IOCPEngine::Close(int fd)
520 return closesocket(fd);
523 int IOCPEngine::Close(EventHandler* fd)
525 return this->Close(fd->GetFd());