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)
102 if(((Overlapped*)eh->m_readEvent)->m_params != 0)
103 delete ((udp_overlap*)((Overlapped*)eh->m_readEvent)->m_params);
105 delete ((Overlapped*)eh->m_readEvent);
108 if(eh->m_writeEvent != 0)
109 delete ((Overlapped*)eh->m_writeEvent);
111 if(eh->m_acceptEvent != 0)
113 delete ((accept_overlap*)((Overlapped*)eh->m_acceptEvent)->m_params);
114 delete ((Overlapped*)eh->m_acceptEvent);
119 m_binding.erase(eh->GetFd());
121 /* decrement set size */
128 void IOCPEngine::WantWrite(EventHandler* eh)
130 /* Post event - write begin */
131 if(!eh->m_writeEvent)
133 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
134 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
135 eh->m_writeEvent = (void*)ov;
136 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
140 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
142 Overlapped * ov = new Overlapped(type, param);
143 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
144 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
147 void IOCPEngine::PostReadEvent(EventHandler * eh)
149 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
154 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
155 * its slower, but it saves modifying all network code.
160 /* determine socket type. */
162 int sock_len = sizeof(DWORD);
163 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
166 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
172 case SOCK_DGRAM: /* UDP Socket */
174 udp_overlap * uv = new udp_overlap;
175 uv->udp_sockaddr_len = sizeof(sockaddr);
176 buf.buf = (char*)uv->udp_buffer;
177 buf.len = sizeof(uv->udp_buffer);
178 ov->m_params = (unsigned long)uv;
179 if(WSARecvFrom(eh->GetFd(), &buf, 1, &uv->udp_len, &flags, uv->udp_sockaddr, (LPINT)&uv->udp_sockaddr_len, &ov->m_overlap, 0))
181 int err = WSAGetLastError();
182 if(err != WSA_IO_PENDING)
185 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
192 case SOCK_STREAM: /* TCP Socket */
194 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
196 if(WSAGetLastError() != WSA_IO_PENDING)
199 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
208 printf("unknwon socket type: %u\n", sock_type);
213 eh->m_readEvent = (void*)ov;
216 int IOCPEngine::DispatchEvents()
219 LPOVERLAPPED overlap;
224 unsigned long bytes_recv;
226 while(GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
228 // woot, we got an event on a socket :P
230 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
231 if(eh == 0) continue;
234 case SOCKET_IO_EVENT_WRITE_READY:
236 eh->m_writeEvent = 0;
237 eh->HandleEvent(EVENT_WRITE, 0);
241 case SOCKET_IO_EVENT_READ_READY:
245 // if we had params, it means we are a udp socket with a udp_overlap pointer in this long.
246 udp_overlap * uv = (udp_overlap*)ov->m_params;
250 eh->HandleEvent(EVENT_READ, 0);
257 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
259 if(ret != 0 || bytes_recv == 0)
262 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
266 eh->HandleEvent(EVENT_READ, 0);
273 case SOCKET_IO_EVENT_ACCEPT:
275 /* this is kinda messy.. :/ */
276 eh->HandleEvent(EVENT_READ, ov->m_params);
277 delete ((accept_overlap*)ov->m_params);
278 eh->m_acceptEvent = 0;
283 case SOCKET_IO_EVENT_ERROR:
285 eh->HandleEvent(EVENT_ERROR, ov->m_params);
296 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
298 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
299 int len = sizeof(sockaddr_in) + 16;
301 accept_overlap* ao = new accept_overlap;
302 memset(ao->buf, 0, 1024);
305 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
306 eh->m_acceptEvent = (void*)ov;
308 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
310 int err = WSAGetLastError();
311 if(err != WSA_IO_PENDING)
313 printf("PostAcceptEvent err: %d\n", err);
319 std::string IOCPEngine::GetName()
324 int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent)
326 Overlapped* ovl = (Overlapped*)acceptevent;
327 accept_overlap* ov = (accept_overlap*)ovl->m_params;
329 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
330 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
332 memcpy(addr, client_address, sizeof(sockaddr_in));
333 *addrlen = sizeof(sockaddr_in);
338 int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent)
340 Overlapped* ovl = (Overlapped*)acceptevent;
341 accept_overlap* ov = (accept_overlap*)ovl->m_params;
343 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
344 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
346 memcpy(name, server_address, sizeof(sockaddr_in));
347 *namelen = sizeof(sockaddr_in);
352 int __recvfrom(SOCKET s, char * buf, int len, int flags, struct sockaddr * from, int * fromlen, udp_overlap * ov)
354 memcpy(buf, ov->udp_buffer, ov->udp_len);
355 memcpy(from, ov->udp_sockaddr, *fromlen);
359 EventHandler * IOCPEngine::GetRef(int fd)
361 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
362 return (itr == m_binding.end()) ? 0 : itr->second;
365 bool IOCPEngine::HasFd(int fd)
367 return (GetRef(fd) != 0);
370 EventHandler * IOCPEngine::GetIntRef(int fd)
372 if(fd < 0 || fd > MAX_DESCRIPTORS)