1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 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 "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->Log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
26 ServerInstance->Log(SPARSE,"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.");
28 printf("ERROR: this is a fatal error, exiting now.");
29 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
32 /* Null variables out. */
35 memset(ref, 0, sizeof(EventHandler*) * MAX_DESCRIPTORS);
38 IOCPEngine::~IOCPEngine()
40 /* Clean up winsock and close completion port */
41 CloseHandle(m_completionPort);
45 bool IOCPEngine::AddFd(EventHandler* eh)
47 /* Does it at least look valid? */
51 int* fake_fd = new int(GenerateFd(eh->GetFd()));
53 int opt_len = sizeof(int);
56 if ((*fake_fd < 0) || (*fake_fd > MAX_DESCRIPTORS))
59 /* Already an entry here */
66 /* are we a listen socket? */
67 getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len);
69 /* set up the read event so the socket can actually receive data :P */
70 eh->Extend("internal_fd", fake_fd);
72 unsigned long completion_key = (ULONG_PTR)*fake_fd;
73 /* assign the socket to the completion port */
74 if (!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, completion_key, 0))
77 /* set up binding, increase set size */
81 /* setup initial events */
88 ServerInstance->Log(DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
90 /* post a write event if there is data to be written */
94 /* we're all good =) */
97 m_binding.insert( map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
101 /* Ohshi-, map::insert failed :/ */
108 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
115 if (!eh->GetExt("internal_fd", fake_fd))
118 int fd = eh->GetFd();
123 void* m_readEvent = NULL;
124 void* m_writeEvent = NULL;
125 void* m_acceptEvent = NULL;
127 ServerInstance->Log(DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
129 /* Cancel pending i/o operations. */
130 if (CancelIo((HANDLE)fd) == FALSE)
133 /* Free the buffer, and delete the event. */
134 if (eh->GetExt("windows_readevent", m_readEvent))
136 if(((Overlapped*)m_readEvent)->m_params != 0)
137 delete ((udp_overlap*)((Overlapped*)m_readEvent)->m_params);
139 delete ((Overlapped*)m_readEvent);
140 eh->Shrink("windows_readevent");
143 if(eh->GetExt("windows_writeevent", m_writeEvent))
145 delete ((Overlapped*)m_writeEvent);
146 eh->Shrink("windows_writeevent");
149 if(eh->GetExt("windows_acceptevent", m_acceptEvent))
151 delete ((accept_overlap*)((Overlapped*)m_acceptEvent)->m_params);
152 delete ((Overlapped*)m_acceptEvent);
153 eh->Shrink("windows_accepevent");
158 m_binding.erase(eh->GetFd());
161 eh->Shrink("internal_fd");
163 /* decrement set size */
170 void IOCPEngine::WantWrite(EventHandler* eh)
175 void* m_writeEvent = NULL;
178 if (!eh->GetExt("internal_fd", fake_fd))
181 /* Post event - write begin */
182 if(!eh->GetExt("windows_writeevent", m_writeEvent))
184 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
185 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
186 eh->Shrink("windows_writeevent");
187 eh->Extend("windows_writeevent",ov);
188 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
192 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
198 if (!eh->GetExt("internal_fd", fake_fd))
201 Overlapped * ov = new Overlapped(type, param);
202 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
203 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
206 void IOCPEngine::PostReadEvent(EventHandler * eh)
211 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
216 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
217 * its slower, but it saves modifying all network code.
222 /* determine socket type. */
224 int sock_len = sizeof(DWORD);
225 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
228 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
234 case SOCK_DGRAM: /* UDP Socket */
236 udp_overlap * uv = new udp_overlap;
237 uv->udp_sockaddr_len = sizeof(sockaddr);
238 buf.buf = (char*)uv->udp_buffer;
239 buf.len = sizeof(uv->udp_buffer);
240 ov->m_params = (unsigned long)uv;
241 if(WSARecvFrom(eh->GetFd(), &buf, 1, &uv->udp_len, &flags, uv->udp_sockaddr, (LPINT)&uv->udp_sockaddr_len, &ov->m_overlap, 0))
243 int err = WSAGetLastError();
244 if(err != WSA_IO_PENDING)
247 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
254 case SOCK_STREAM: /* TCP Socket */
256 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
258 if(WSAGetLastError() != WSA_IO_PENDING)
261 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
270 printf("unknwon socket type: %u\n", sock_type);
275 eh->Extend("windows_readevent", ov);
278 int IOCPEngine::DispatchEvents()
281 LPOVERLAPPED overlap;
286 unsigned long bytes_recv;
288 while (GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
290 if (intfd < 0 || intfd > MAX_DESCRIPTORS)
293 // woot, we got an event on a socket :P
295 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
300 void* m_readEvent = NULL;
301 void* m_writeEvent = NULL;
303 eh->GetExt("windows_readevent", m_readEvent);
304 eh->GetExt("windows_writeevent", m_writeEvent);
308 case SOCKET_IO_EVENT_WRITE_READY:
310 eh->Shrink("windows_writeevent");
311 eh->HandleEvent(EVENT_WRITE, 0);
315 case SOCKET_IO_EVENT_READ_READY:
319 // if we had params, it means we are a udp socket with a udp_overlap pointer in this long.
320 udp_overlap * uv = (udp_overlap*)ov->m_params;
323 eh->Shrink("windows_readevent");
324 eh->HandleEvent(EVENT_READ, 0);
331 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
332 eh->Shrink("windows_readevent");
333 if(ret != 0 || bytes_recv == 0)
336 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
340 eh->HandleEvent(EVENT_READ, 0);
347 case SOCKET_IO_EVENT_ACCEPT:
349 /* this is kinda messy.. :/ */
350 eh->HandleEvent(EVENT_READ, ov->m_params);
351 delete ((accept_overlap*)ov->m_params);
352 eh->Shrink("windows_acceptevent");
357 case SOCKET_IO_EVENT_ERROR:
359 eh->HandleEvent(EVENT_ERROR, ov->m_params);
370 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
377 struct linger linger = { 0 };
379 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
381 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
382 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
385 setsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&linger,sizeof(linger));
386 ioctlsocket(fd, FIONBIO, &arg);
388 int len = sizeof(sockaddr_in) + 16;
390 accept_overlap* ao = new accept_overlap;
391 memset(ao->buf, 0, 1024);
394 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
395 eh->Extend("windows_acceptevent", ov);
397 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
399 int err = WSAGetLastError();
400 if(err != WSA_IO_PENDING)
402 printf("PostAcceptEvent err: %d\n", err);
408 std::string IOCPEngine::GetName()
413 EventHandler * IOCPEngine::GetRef(int fd)
415 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
416 return (itr == m_binding.end()) ? 0 : itr->second;
419 bool IOCPEngine::HasFd(int fd)
421 return (GetRef(fd) != 0);
424 bool IOCPEngine::BoundsCheckFd(EventHandler* eh)
427 if (!eh || eh->GetFd() < 0)
430 if(!eh->GetExt("internal_fd", internal_fd))
433 if(*internal_fd > MAX_DESCRIPTORS)
439 EventHandler * IOCPEngine::GetIntRef(int fd)
441 if(fd < 0 || fd > MAX_DESCRIPTORS)
446 int IOCPEngine::Accept(EventHandler* fd, sockaddr *addr, socklen_t *addrlen)
448 SOCKET s = fd->GetFd();
450 Overlapped* acceptevent = NULL;
451 if (!fd->GetExt("windows_acceptevent", acceptevent))
452 /* Shit, no accept event on this socket! :( */
455 Overlapped* ovl = acceptevent;
456 accept_overlap* ov = (accept_overlap*)ovl->m_params;
458 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
459 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
461 memcpy(addr, client_address, sizeof(sockaddr_in));
462 *addrlen = sizeof(sockaddr_in);
467 int IOCPEngine::GetSockName(EventHandler* fd, sockaddr *name, socklen_t* name)
469 Overlapped* ovl = NULL;
471 if (!fd->GetExt("windows_acceptevent", acceptevent))
474 accept_overlap* ov = (accept_overlap*)ovl->m_params;
476 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
477 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
479 memcpy(name, server_address, sizeof(sockaddr_in));
480 *namelen = sizeof(sockaddr_in);
485 int IOCPEngine::RecvFrom(EventHandler* fd, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen)
487 udp_overlap * ov = NULL;
488 if (!fd->GetExt("windows_readevent", ov))
490 memcpy(buf, ov->udp_buffer, ov->udp_len);
491 memcpy(from, ov->udp_sockaddr, *fromlen);
495 int IOCPEngine::Blocking(int fd)
497 unsigned long opt = 0;
498 ioctlsocket(s, FIONBIO, &opt);
501 int IOCPEngine::NonBlocking(int fd)
503 unsigned long opt = 1;
504 ioctlsocket(s, FIONBIO, &opt);
507 int IOCPEngine::Close(int fd)
509 return closesocket(socket);
512 int IOCPEngine::Close(EventHandler* fd)
514 return this->Close(fd->GetFd());