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 /* assign the socket to the completion port */
50 if(!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, (ULONG_PTR)eh->m_internalFd, 0))
53 /* set up binding, increase set size */
57 /* setup initial events */
64 ServerInstance->Log(DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", fake_fd, eh->GetFd(), eh);
66 /* post a write event if there is data to be written */
70 /* we're all good =) */
73 m_binding.insert( map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
77 /* Ohshi-, map::insert failed :/ */
84 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
86 int fake_fd = eh->m_internalFd;
92 ServerInstance->Log(DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", fake_fd, eh->GetFd(), eh);
94 /* Cancel pending i/o operations. */
95 if (CancelIo((HANDLE)fd) == FALSE)
98 /* Free the buffer, and delete the event. */
99 if(eh->m_readEvent != 0)
100 delete ((Overlapped*)eh->m_readEvent);
102 if(eh->m_writeEvent != 0)
103 delete ((Overlapped*)eh->m_writeEvent);
105 if(eh->m_acceptEvent != 0)
107 delete ((accept_overlap*)((Overlapped*)eh->m_acceptEvent)->m_params);
108 delete ((Overlapped*)eh->m_acceptEvent);
113 m_binding.erase(eh->GetFd());
115 /* decrement set size */
122 void IOCPEngine::WantWrite(EventHandler* eh)
124 /* Post event - write begin */
125 if(!eh->m_writeEvent)
127 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
128 eh->m_writeEvent = (void*)ov;
129 PostQueuedCompletionStatus(m_completionPort, 0, (ULONG_PTR)eh->m_internalFd, &ov->m_overlap);
133 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
135 Overlapped * ov = new Overlapped(type, param);
136 return PostQueuedCompletionStatus(m_completionPort, 0, (ULONG_PTR)eh->m_internalFd, &ov->m_overlap);
139 void IOCPEngine::PostReadEvent(EventHandler * eh)
141 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
146 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
147 * its slower, but it saves modifying all network code.
152 /* determine socket type. */
154 int sock_len = sizeof(DWORD);
155 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
158 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
164 case SOCK_DGRAM: /* UDP Socket */
166 if(WSARecvFrom(eh->GetFd(), &buf, 1, &r_length, &flags, 0, 0, &ov->m_overlap, 0))
168 int err = WSAGetLastError();
169 if(WSAGetLastError() != WSA_IO_PENDING)
172 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
179 case SOCK_STREAM: /* TCP Socket */
181 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
183 if(WSAGetLastError() != WSA_IO_PENDING)
186 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
195 printf("unknwon socket type: %u\n", sock_type);
200 eh->m_readEvent = (void*)ov;
203 int IOCPEngine::DispatchEvents()
206 LPOVERLAPPED overlap;
211 unsigned long bytes_recv;
213 while(GetQueuedCompletionStatus(m_completionPort, &len, (PULONG_PTR)&intfd, &overlap, 1000))
215 // woot, we got an event on a socket :P
217 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
218 if(eh == 0) continue;
221 case SOCKET_IO_EVENT_WRITE_READY:
223 eh->m_writeEvent = 0;
224 eh->HandleEvent(EVENT_WRITE, 0);
228 case SOCKET_IO_EVENT_READ_READY:
230 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
232 if(ret != 0 || bytes_recv == 0)
235 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
239 eh->HandleEvent(EVENT_READ, 0);
245 case SOCKET_IO_EVENT_ACCEPT:
247 /* this is kinda messy.. :/ */
248 eh->HandleEvent(EVENT_READ, ov->m_params);
249 delete ((accept_overlap*)ov->m_params);
250 eh->m_acceptEvent = 0;
255 case SOCKET_IO_EVENT_ERROR:
257 eh->HandleEvent(EVENT_ERROR, ov->m_params);
268 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
270 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
271 int len = sizeof(sockaddr_in) + 16;
273 accept_overlap* ao = new accept_overlap;
274 memset(ao->buf, 0, 1024);
277 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
278 eh->m_acceptEvent = (void*)ov;
280 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
282 int err = WSAGetLastError();
283 if(err != WSA_IO_PENDING)
285 printf("PostAcceptEvent err: %d\n", err);
291 std::string IOCPEngine::GetName()
296 int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent)
298 Overlapped* ovl = (Overlapped*)acceptevent;
299 accept_overlap* ov = (accept_overlap*)ovl->m_params;
301 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
302 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
304 memcpy(addr, client_address, sizeof(sockaddr_in));
305 *addrlen = sizeof(sockaddr_in);
310 int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent)
312 Overlapped* ovl = (Overlapped*)acceptevent;
313 accept_overlap* ov = (accept_overlap*)ovl->m_params;
315 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
316 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
318 memcpy(name, server_address, sizeof(sockaddr_in));
319 *namelen = sizeof(sockaddr_in);
324 EventHandler * IOCPEngine::GetRef(int fd)
326 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
327 return (itr == m_binding.end()) ? 0 : itr->second;
330 bool IOCPEngine::HasFd(int fd)
332 return (GetRef(fd) != 0);
335 EventHandler * IOCPEngine::GetIntRef(int fd)
337 if(fd < 0 || fd > MAX_DESCRIPTORS)