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();
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
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.
151 // determine socket type.
153 int sock_len = sizeof(DWORD);
154 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
157 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
163 case SOCK_DGRAM: // UDP Socket
165 if(WSARecvFrom(eh->GetFd(), &buf, 1, &r_length, &flags, 0, 0, &ov->m_overlap, 0))
167 int err = WSAGetLastError();
168 if(WSAGetLastError() != WSA_IO_PENDING)
171 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
177 case SOCK_STREAM: // TCP Socket
179 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
181 if(WSAGetLastError() != WSA_IO_PENDING)
184 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
192 printf("unknwon socket type: %u\n", sock_type);
196 eh->m_readEvent = (void*)ov;
199 int IOCPEngine::DispatchEvents()
202 LPOVERLAPPED overlap;
207 unsigned long bytes_recv;
209 while(GetQueuedCompletionStatus(m_completionPort, &len, (PULONG_PTR)&intfd, &overlap, 100))
211 // woot, we got an event on a socket :P
213 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
214 if(eh == 0) continue;
217 case SOCKET_IO_EVENT_WRITE_READY:
219 eh->m_writeEvent = 0;
220 eh->HandleEvent(EVENT_WRITE, 0);
223 case SOCKET_IO_EVENT_READ_READY:
225 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
227 if(ret != 0 || bytes_recv == 0)
230 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO);
234 eh->HandleEvent(EVENT_READ, 0);
239 case SOCKET_IO_EVENT_ACCEPT:
241 /* this is kinda messy.. :/ */
242 eh->HandleEvent(EVENT_READ, ov->m_params);
243 delete ((accept_overlap*)ov->m_params);
244 eh->m_acceptEvent = 0;
248 case SOCKET_IO_EVENT_ERROR:
250 eh->HandleEvent(EVENT_ERROR, ov->m_params);
260 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
262 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
263 int len = sizeof(sockaddr_in) + 16;
265 accept_overlap * ao = new accept_overlap;
266 memset(ao->buf, 0, 1024);
269 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
270 eh->m_acceptEvent = (void*)ov;
272 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
274 int err = WSAGetLastError();
275 if(err != WSA_IO_PENDING)
277 printf("PostAcceptEvent err: %d\n", err);
283 std::string IOCPEngine::GetName()
288 int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent)
290 Overlapped * ovl = (Overlapped*)acceptevent;
291 accept_overlap * ov = (accept_overlap*)ovl->m_params;
293 sockaddr_in * server_address = (sockaddr_in*)&ov->buf[10];
294 sockaddr_in * client_address = (sockaddr_in*)&ov->buf[38];
296 memcpy(addr, client_address, sizeof(sockaddr_in));
297 *addrlen = sizeof(sockaddr_in);
302 int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent)
304 Overlapped * ovl = (Overlapped*)acceptevent;
305 accept_overlap * ov = (accept_overlap*)ovl->m_params;
307 sockaddr_in * server_address = (sockaddr_in*)&ov->buf[10];
308 sockaddr_in * client_address = (sockaddr_in*)&ov->buf[38];
310 memcpy(name, server_address, sizeof(sockaddr_in));
311 *namelen = sizeof(sockaddr_in);
316 EventHandler * IOCPEngine::GetRef(int fd)
318 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
319 return (itr == m_binding.end()) ? 0 : itr->second;
322 bool IOCPEngine::HasFd(int fd)
324 return (GetRef(fd) != 0);
327 EventHandler * IOCPEngine::GetIntRef(int fd)
329 if(fd < 0 || fd > MAX_DESCRIPTORS)