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 /* Does it at least look valid? */
39 int fake_fd = GenerateFd(eh->GetFd());
41 int opt_len = sizeof(int);
44 if ((fake_fd < 0) || (fake_fd > MAX_DESCRIPTOR))
47 /* Already an entry here */
51 /* are we a listen socket? */
52 getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len);
54 /* set up the read event so the socket can actually receive data :P */
55 eh->m_internalFd = fake_fd;
57 eh->m_acceptEvent = 0;
59 unsigned long completion_key = (ULONG_PTR)eh->m_internalFd;
60 /* assign the socket to the completion port */
61 if (!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, completion_key, 0))
64 /* set up binding, increase set size */
68 /* setup initial events */
75 ServerInstance->Log(DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", fake_fd, eh->GetFd(), eh);
77 /* post a write event if there is data to be written */
81 /* we're all good =) */
84 m_binding.insert( map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
88 /* Ohshi-, map::insert failed :/ */
95 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
100 int fake_fd = eh->m_internalFd;
101 int fd = eh->GetFd();
106 ServerInstance->Log(DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", fake_fd, eh->GetFd(), eh);
108 /* Cancel pending i/o operations. */
109 if (CancelIo((HANDLE)fd) == FALSE)
112 /* Free the buffer, and delete the event. */
113 if (eh->m_readEvent != 0)
115 if(((Overlapped*)eh->m_readEvent)->m_params != 0)
116 delete ((udp_overlap*)((Overlapped*)eh->m_readEvent)->m_params);
118 delete ((Overlapped*)eh->m_readEvent);
121 if(eh->m_writeEvent != 0)
122 delete ((Overlapped*)eh->m_writeEvent);
124 if(eh->m_acceptEvent != 0)
126 delete ((accept_overlap*)((Overlapped*)eh->m_acceptEvent)->m_params);
127 delete ((Overlapped*)eh->m_acceptEvent);
132 m_binding.erase(eh->GetFd());
134 /* decrement set size */
141 void IOCPEngine::WantWrite(EventHandler* eh)
146 /* Post event - write begin */
147 if(!eh->m_writeEvent)
149 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
150 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
151 eh->m_writeEvent = (void*)ov;
152 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
156 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
161 Overlapped * ov = new Overlapped(type, param);
162 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
163 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
166 void IOCPEngine::PostReadEvent(EventHandler * eh)
171 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
176 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
177 * its slower, but it saves modifying all network code.
182 /* determine socket type. */
184 int sock_len = sizeof(DWORD);
185 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
188 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
194 case SOCK_DGRAM: /* UDP Socket */
196 udp_overlap * uv = new udp_overlap;
197 uv->udp_sockaddr_len = sizeof(sockaddr);
198 buf.buf = (char*)uv->udp_buffer;
199 buf.len = sizeof(uv->udp_buffer);
200 ov->m_params = (unsigned long)uv;
201 if(WSARecvFrom(eh->GetFd(), &buf, 1, &uv->udp_len, &flags, uv->udp_sockaddr, (LPINT)&uv->udp_sockaddr_len, &ov->m_overlap, 0))
203 int err = WSAGetLastError();
204 if(err != WSA_IO_PENDING)
207 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
214 case SOCK_STREAM: /* TCP Socket */
216 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
218 if(WSAGetLastError() != WSA_IO_PENDING)
221 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
230 printf("unknwon socket type: %u\n", sock_type);
235 eh->m_readEvent = (void*)ov;
238 int IOCPEngine::DispatchEvents()
241 LPOVERLAPPED overlap;
246 unsigned long bytes_recv;
248 while (GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
250 // woot, we got an event on a socket :P
252 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
259 case SOCKET_IO_EVENT_WRITE_READY:
261 eh->m_writeEvent = 0;
262 eh->HandleEvent(EVENT_WRITE, 0);
266 case SOCKET_IO_EVENT_READ_READY:
270 // if we had params, it means we are a udp socket with a udp_overlap pointer in this long.
271 udp_overlap * uv = (udp_overlap*)ov->m_params;
275 eh->HandleEvent(EVENT_READ, 0);
282 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
284 if(ret != 0 || bytes_recv == 0)
287 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
291 eh->HandleEvent(EVENT_READ, 0);
298 case SOCKET_IO_EVENT_ACCEPT:
300 /* this is kinda messy.. :/ */
301 eh->HandleEvent(EVENT_READ, ov->m_params);
302 delete ((accept_overlap*)ov->m_params);
303 eh->m_acceptEvent = 0;
308 case SOCKET_IO_EVENT_ERROR:
310 eh->HandleEvent(EVENT_ERROR, ov->m_params);
321 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
326 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
327 int len = sizeof(sockaddr_in) + 16;
329 accept_overlap* ao = new accept_overlap;
330 memset(ao->buf, 0, 1024);
333 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
334 eh->m_acceptEvent = (void*)ov;
336 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
338 int err = WSAGetLastError();
339 if(err != WSA_IO_PENDING)
341 printf("PostAcceptEvent err: %d\n", err);
347 std::string IOCPEngine::GetName()
352 int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent)
354 Overlapped* ovl = (Overlapped*)acceptevent;
355 accept_overlap* ov = (accept_overlap*)ovl->m_params;
357 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
358 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
360 memcpy(addr, client_address, sizeof(sockaddr_in));
361 *addrlen = sizeof(sockaddr_in);
366 int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent)
368 Overlapped* ovl = (Overlapped*)acceptevent;
369 accept_overlap* ov = (accept_overlap*)ovl->m_params;
371 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
372 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
374 memcpy(name, server_address, sizeof(sockaddr_in));
375 *namelen = sizeof(sockaddr_in);
380 int __recvfrom(SOCKET s, char * buf, int len, int flags, struct sockaddr * from, int * fromlen, udp_overlap * ov)
382 memcpy(buf, ov->udp_buffer, ov->udp_len);
383 memcpy(from, ov->udp_sockaddr, *fromlen);
387 EventHandler * IOCPEngine::GetRef(int fd)
389 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
390 return (itr == m_binding.end()) ? 0 : itr->second;
393 bool IOCPEngine::HasFd(int fd)
395 return (GetRef(fd) != 0);
398 EventHandler * IOCPEngine::GetIntRef(int fd)
400 if(fd < 0 || fd > MAX_DESCRIPTORS)