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"
17 IOCPEngine::IOCPEngine(InspIRCd * Instance) : SocketEngine(Instance)
19 /* Create completion port */
20 m_completionPort = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)0, 0);
22 /* Null variables out. */
25 memset(ref, 0, sizeof(EventHandler*) * MAX_DESCRIPTORS);
28 IOCPEngine::~IOCPEngine()
30 CloseHandle(m_completionPort);
33 bool IOCPEngine::AddFd(EventHandler* eh)
35 int fake_fd = GenerateFd(eh->GetFd());
37 int opt_len = sizeof(int);
41 /* are we a listen socket? */
42 getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len);
44 /* set up the read event so the socket can actually receive data :P */
45 eh->m_internalFd = fake_fd;
47 eh->m_acceptEvent = 0;
49 unsigned long completion_key = (ULONG_PTR)eh->m_internalFd;
50 /* assign the socket to the completion port */
51 if(!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, completion_key, 0))
54 /* set up binding, increase set size */
58 /* setup initial events */
65 ServerInstance->Log(DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", fake_fd, eh->GetFd(), eh);
67 /* post a write event if there is data to be written */
71 /* we're all good =) */
74 m_binding.insert( map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
78 /* Ohshi-, map::insert failed :/ */
85 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
87 int fake_fd = eh->m_internalFd;
93 ServerInstance->Log(DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", fake_fd, eh->GetFd(), eh);
95 /* Cancel pending i/o operations. */
96 if (CancelIo((HANDLE)fd) == FALSE)
99 /* Free the buffer, and delete the event. */
100 if(eh->m_readEvent != 0)
101 delete ((Overlapped*)eh->m_readEvent);
103 if(eh->m_writeEvent != 0)
104 delete ((Overlapped*)eh->m_writeEvent);
106 if(eh->m_acceptEvent != 0)
108 delete ((accept_overlap*)((Overlapped*)eh->m_acceptEvent)->m_params);
109 delete ((Overlapped*)eh->m_acceptEvent);
114 m_binding.erase(eh->GetFd());
116 /* decrement set size */
123 void IOCPEngine::WantWrite(EventHandler* eh)
125 /* Post event - write begin */
126 if(!eh->m_writeEvent)
128 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
129 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
130 eh->m_writeEvent = (void*)ov;
131 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
135 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
137 Overlapped * ov = new Overlapped(type, param);
138 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
139 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
142 void IOCPEngine::PostReadEvent(EventHandler * eh)
144 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
149 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
150 * its slower, but it saves modifying all network code.
155 /* determine socket type. */
157 int sock_len = sizeof(DWORD);
158 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
161 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
167 case SOCK_DGRAM: /* UDP Socket */
169 if(WSARecvFrom(eh->GetFd(), &buf, 1, &r_length, &flags, 0, 0, &ov->m_overlap, 0))
171 int err = WSAGetLastError();
172 if(WSAGetLastError() != WSA_IO_PENDING)
175 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
182 case SOCK_STREAM: /* TCP Socket */
184 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
186 if(WSAGetLastError() != WSA_IO_PENDING)
189 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
198 printf("unknwon socket type: %u\n", sock_type);
203 eh->m_readEvent = (void*)ov;
206 int IOCPEngine::DispatchEvents()
209 LPOVERLAPPED overlap;
214 unsigned long bytes_recv;
216 while(GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
218 // woot, we got an event on a socket :P
220 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
221 if(eh == 0) continue;
224 case SOCKET_IO_EVENT_WRITE_READY:
226 eh->m_writeEvent = 0;
227 eh->HandleEvent(EVENT_WRITE, 0);
231 case SOCKET_IO_EVENT_READ_READY:
233 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
235 if(ret != 0 || bytes_recv == 0)
238 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
242 eh->HandleEvent(EVENT_READ, 0);
248 case SOCKET_IO_EVENT_ACCEPT:
250 /* this is kinda messy.. :/ */
251 eh->HandleEvent(EVENT_READ, ov->m_params);
252 delete ((accept_overlap*)ov->m_params);
253 eh->m_acceptEvent = 0;
258 case SOCKET_IO_EVENT_ERROR:
260 eh->HandleEvent(EVENT_ERROR, ov->m_params);
271 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
273 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
274 int len = sizeof(sockaddr_in) + 16;
276 accept_overlap* ao = new accept_overlap;
277 memset(ao->buf, 0, 1024);
280 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
281 eh->m_acceptEvent = (void*)ov;
283 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
285 int err = WSAGetLastError();
286 if(err != WSA_IO_PENDING)
288 printf("PostAcceptEvent err: %d\n", err);
294 std::string IOCPEngine::GetName()
299 int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent)
301 Overlapped* ovl = (Overlapped*)acceptevent;
302 accept_overlap* ov = (accept_overlap*)ovl->m_params;
304 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
305 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
307 memcpy(addr, client_address, sizeof(sockaddr_in));
308 *addrlen = sizeof(sockaddr_in);
313 int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent)
315 Overlapped* ovl = (Overlapped*)acceptevent;
316 accept_overlap* ov = (accept_overlap*)ovl->m_params;
318 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
319 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
321 memcpy(name, server_address, sizeof(sockaddr_in));
322 *namelen = sizeof(sockaddr_in);
327 EventHandler * IOCPEngine::GetRef(int fd)
329 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
330 return (itr == m_binding.end()) ? 0 : itr->second;
333 bool IOCPEngine::HasFd(int fd)
335 return (GetRef(fd) != 0);
338 EventHandler * IOCPEngine::GetIntRef(int fd)
340 if(fd < 0 || fd > MAX_DESCRIPTORS)