1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2008 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 /* Create completion port */
21 m_completionPort = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)0, 0);
23 if (!m_completionPort)
25 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
26 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: this is a fatal error, exiting now.");
27 printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.\n");
28 printf("ERROR: this is a fatal error, exiting now.\n");
29 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
32 /* Null variables out. */
35 MAX_DESCRIPTORS = 10240;
36 ref = new EventHandler* [10240];
37 memset(ref, 0, sizeof(EventHandler*) * MAX_DESCRIPTORS);
40 IOCPEngine::~IOCPEngine()
42 /* Clean up winsock and close completion port */
43 CloseHandle(m_completionPort);
48 bool IOCPEngine::AddFd(EventHandler* eh)
50 /* Does it at least look valid? */
54 int* fake_fd = new int(GenerateFd(eh->GetFd()));
56 int opt_len = sizeof(int);
59 if ((*fake_fd < 0) || (*fake_fd > MAX_DESCRIPTORS))
65 /* Already an entry here */
72 /* are we a listen socket? */
73 getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len);
75 /* set up the read event so the socket can actually receive data :P */
76 eh->Extend("internal_fd", fake_fd);
78 unsigned long completion_key = (ULONG_PTR)*fake_fd;
79 /* assign the socket to the completion port */
80 if (!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, completion_key, 0))
83 /* setup initial events */
90 ServerInstance->Logs->Log("SOCKET",DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
92 /* post a write event if there is data to be written */
96 /* we're all good =) */
99 m_binding.insert( std::map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
103 /* Ohshi-, map::insert failed :/ */
113 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
120 if (!eh->GetExt("internal_fd", fake_fd))
123 int fd = eh->GetFd();
125 void* m_readEvent = NULL;
126 void* m_writeEvent = NULL;
127 void* m_acceptEvent = NULL;
129 ServerInstance->Logs->Log("SOCKET",DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
131 /* Cancel pending i/o operations. */
132 if (CancelIo((HANDLE)fd) == FALSE)
135 /* Free the buffer, and delete the event. */
136 if (eh->GetExt("windows_readevent", m_readEvent))
138 if(((Overlapped*)m_readEvent)->m_params != 0)
139 delete ((udp_overlap*)((Overlapped*)m_readEvent)->m_params);
141 delete ((Overlapped*)m_readEvent);
142 eh->Shrink("windows_readevent");
145 if(eh->GetExt("windows_writeevent", m_writeEvent))
147 delete ((Overlapped*)m_writeEvent);
148 eh->Shrink("windows_writeevent");
151 if(eh->GetExt("windows_acceptevent", m_acceptEvent))
153 delete ((accept_overlap*)((Overlapped*)m_acceptEvent)->m_params);
154 delete ((Overlapped*)m_acceptEvent);
155 eh->Shrink("windows_accepevent");
160 m_binding.erase(eh->GetFd());
163 eh->Shrink("internal_fd");
165 /* decrement set size */
172 void IOCPEngine::WantWrite(EventHandler* eh)
177 void* m_writeEvent = NULL;
180 if (!eh->GetExt("internal_fd", fake_fd))
183 /* Post event - write begin */
184 if(!eh->GetExt("windows_writeevent", m_writeEvent))
186 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
187 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
188 eh->Shrink("windows_writeevent");
189 eh->Extend("windows_writeevent",ov);
190 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
194 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
200 if (!eh->GetExt("internal_fd", fake_fd))
203 Overlapped * ov = new Overlapped(type, param);
204 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
205 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
208 void IOCPEngine::PostReadEvent(EventHandler * eh)
213 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
218 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
219 * its slower, but it saves modifying all network code.
224 /* determine socket type. */
226 int sock_len = sizeof(DWORD);
227 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
230 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
236 case SOCK_DGRAM: /* UDP Socket */
238 udp_overlap * uv = new udp_overlap;
239 uv->udp_sockaddr_len = sizeof(sockaddr);
240 buf.buf = (char*)uv->udp_buffer;
241 buf.len = sizeof(uv->udp_buffer);
242 ov->m_params = (unsigned long)uv;
243 if(WSARecvFrom(eh->GetFd(), &buf, 1, &uv->udp_len, &flags, uv->udp_sockaddr, (LPINT)&uv->udp_sockaddr_len, &ov->m_overlap, 0))
245 int err = WSAGetLastError();
246 if(err != WSA_IO_PENDING)
249 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
256 case SOCK_STREAM: /* TCP Socket */
258 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
260 if(WSAGetLastError() != WSA_IO_PENDING)
263 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
272 printf("unknwon socket type: %u\n", sock_type);
277 eh->Extend("windows_readevent", ov);
280 int IOCPEngine::DispatchEvents()
283 LPOVERLAPPED overlap;
288 unsigned long bytes_recv;
290 while (GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
292 if (intfd < 0 || intfd > MAX_DESCRIPTORS)
295 // woot, we got an event on a socket :P
297 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
302 void* m_readEvent = NULL;
303 void* m_writeEvent = NULL;
305 eh->GetExt("windows_readevent", m_readEvent);
306 eh->GetExt("windows_writeevent", m_writeEvent);
312 case SOCKET_IO_EVENT_WRITE_READY:
315 eh->Shrink("windows_writeevent");
316 eh->HandleEvent(EVENT_WRITE, 0);
320 case SOCKET_IO_EVENT_READ_READY:
325 // if we had params, it means we are a udp socket with a udp_overlap pointer in this long.
326 udp_overlap * uv = (udp_overlap*)ov->m_params;
329 eh->Shrink("windows_readevent");
330 eh->HandleEvent(EVENT_READ, 0);
337 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
338 eh->Shrink("windows_readevent");
339 if(ret != 0 || bytes_recv == 0)
342 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
346 eh->HandleEvent(EVENT_READ, 0);
353 case SOCKET_IO_EVENT_ACCEPT:
355 /* this is kinda messy.. :/ */
357 eh->HandleEvent(EVENT_READ, ov->m_params);
358 delete ((accept_overlap*)ov->m_params);
359 eh->Shrink("windows_acceptevent");
364 case SOCKET_IO_EVENT_ERROR:
367 eh->HandleEvent(EVENT_ERROR, ov->m_params);
378 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
385 struct linger linger = { 0 };
387 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
389 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
390 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
393 setsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&linger,sizeof(linger));
394 ioctlsocket(fd, FIONBIO, &arg);
396 int len = sizeof(sockaddr_in) + 16;
398 accept_overlap* ao = new accept_overlap;
399 memset(ao->buf, 0, 1024);
402 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
403 eh->Extend("windows_acceptevent", ov);
405 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
407 int err = WSAGetLastError();
408 if(err != WSA_IO_PENDING)
410 printf("PostAcceptEvent err: %d\n", err);
416 std::string IOCPEngine::GetName()
421 EventHandler * IOCPEngine::GetRef(int fd)
423 std::map<int, EventHandler*>::iterator itr = m_binding.find(fd);
424 return (itr == m_binding.end()) ? 0 : itr->second;
427 bool IOCPEngine::HasFd(int fd)
429 return (GetRef(fd) != 0);
432 bool IOCPEngine::BoundsCheckFd(EventHandler* eh)
435 if (!eh || eh->GetFd() < 0)
438 if(!eh->GetExt("internal_fd", internal_fd))
441 if(*internal_fd > MAX_DESCRIPTORS)
447 EventHandler * IOCPEngine::GetIntRef(int fd)
449 if(fd < 0 || fd > MAX_DESCRIPTORS)
454 int IOCPEngine::Accept(EventHandler* fd, sockaddr *addr, socklen_t *addrlen)
456 SOCKET s = fd->GetFd();
458 Overlapped* acceptevent = NULL;
459 if (!fd->GetExt("windows_acceptevent", acceptevent))
460 /* Shit, no accept event on this socket! :( */
463 Overlapped* ovl = acceptevent;
464 accept_overlap* ov = (accept_overlap*)ovl->m_params;
466 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
467 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
469 memcpy(addr, client_address, sizeof(sockaddr_in));
470 *addrlen = sizeof(sockaddr_in);
475 int IOCPEngine::GetSockName(EventHandler* fd, sockaddr *name, socklen_t* namelen)
477 Overlapped* ovl = NULL;
479 if (!fd->GetExt("windows_acceptevent", ovl))
482 accept_overlap* ov = (accept_overlap*)ovl->m_params;
484 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
485 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
487 memcpy(name, server_address, sizeof(sockaddr_in));
488 *namelen = sizeof(sockaddr_in);
493 int IOCPEngine::RecvFrom(EventHandler* fd, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen)
495 udp_overlap * ov = NULL;
496 if (!fd->GetExt("windows_readevent", ov))
498 memcpy(buf, ov->udp_buffer, ov->udp_len);
499 memcpy(from, ov->udp_sockaddr, *fromlen);
503 int IOCPEngine::Blocking(int fd)
505 unsigned long opt = 0;
506 return ioctlsocket(fd, FIONBIO, &opt);
509 int IOCPEngine::NonBlocking(int fd)
511 unsigned long opt = 1;
512 return ioctlsocket(fd, FIONBIO, &opt);
515 int IOCPEngine::Close(int fd)
517 return closesocket(fd);
520 int IOCPEngine::Close(EventHandler* fd)
522 return this->Close(fd->GetFd());