From c778d1258a3d778d0a6227b632ba5091a0eb25a0 Mon Sep 17 00:00:00 2001 From: w00t Date: Sat, 19 May 2007 16:01:06 +0000 Subject: Helps if I add the w32 specific code, too. :p git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@7044 e03df62e-2008-0410-955e-edbf42e46eb7 --- src/socketengine_iocp.cpp | 323 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 323 insertions(+) create mode 100644 src/socketengine_iocp.cpp (limited to 'src') diff --git a/src/socketengine_iocp.cpp b/src/socketengine_iocp.cpp new file mode 100644 index 000000000..947b518b6 --- /dev/null +++ b/src/socketengine_iocp.cpp @@ -0,0 +1,323 @@ +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd: (C) 2002-2007 InspIRCd Development Team + * See: http://www.inspircd.org/wiki/index.php/Credits + * + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +#include "socketengine_iocp.h" +#include +#include + +IOCPEngine::IOCPEngine(InspIRCd * Instance) : SocketEngine(Instance) +{ + // Create completion port + m_completionPort = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)0, 0); + + // Null variables out. + CurrentSetSize = 0; + EngineHandle = 0; + memset(ref, 0, sizeof(EventHandler*) * MAX_DESCRIPTORS); +} + +IOCPEngine::~IOCPEngine() +{ + CloseHandle(m_completionPort); +}; + +bool IOCPEngine::AddFd(EventHandler* eh) +{ + int fake_fd = GenerateFd(); + int is_accept = 0; + int opt_len = sizeof(int); + if(fake_fd < 0) + return false; + + // are we a listen socket? + getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len); + + // set up the read event so the socket can actually receive data :P + eh->m_internalFd = fake_fd; + eh->m_writeEvent = 0; + eh->m_acceptEvent = 0; + + // assign the socket to the completion port + if(!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, (ULONG_PTR)eh->m_internalFd, 0)) + return false; + + // set up binding, increase set size + ref[fake_fd] = eh; + ++CurrentSetSize; + + // setup initial events + if(is_accept) + PostAcceptEvent(eh); + else + PostReadEvent(eh); + + // log message + ServerInstance->Log(DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", fake_fd, eh->GetFd(), eh); + + // post a write event if there is data to be written + if(eh->Writeable()) + WantWrite(eh); + + // we're all good =) + m_binding.insert( map::value_type( eh->GetFd(), eh ) ); + return true; +} + +bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */) +{ + int fake_fd = eh->m_internalFd; + int fd = eh->GetFd(); + + if(ref[fake_fd] == 0) + return false; + + ServerInstance->Log(DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", fake_fd, eh->GetFd(), eh); + + // Cancel pending i/o operations. + assert(CancelIo((HANDLE)fd) == TRUE); + + // Free the buffer, and delete the event. + if(eh->m_readEvent != 0) + delete ((Overlapped*)eh->m_readEvent); + + if(eh->m_writeEvent != 0) + delete ((Overlapped*)eh->m_writeEvent); + + if(eh->m_acceptEvent != 0) + { + delete ((accept_overlap*)((Overlapped*)eh->m_acceptEvent)->m_params); + delete ((Overlapped*)eh->m_acceptEvent); + } + + // Clear binding + ref[fake_fd] = 0; + m_binding.erase(eh->GetFd()); + + // decrement set size + --CurrentSetSize; + + // success + return true; +} + +void IOCPEngine::WantWrite(EventHandler* eh) +{ + // Post event - write begin + if(!eh->m_writeEvent) + { + Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0); + eh->m_writeEvent = (void*)ov; + PostQueuedCompletionStatus(m_completionPort, 0, (ULONG_PTR)eh->m_internalFd, &ov->m_overlap); + } +} + +bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param) +{ + Overlapped * ov = new Overlapped(type, param); + return PostQueuedCompletionStatus(m_completionPort, 0, (ULONG_PTR)eh->m_internalFd, &ov->m_overlap); +} + +void IOCPEngine::PostReadEvent(EventHandler * eh) +{ + Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0); + DWORD flags = 0; + DWORD r_length = 0; + WSABUF buf; + + // by passing a null buffer pointer, we can have this working in the same way as epoll.. + // its slower, but it saves modifying all network code. + buf.buf = 0; + buf.len = 0; + + // determine socket type. + DWORD sock_type; + int sock_len = sizeof(DWORD); + if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1) + { + // wtfhax? + PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0); + delete ov; + return; + } + switch(sock_type) + { + case SOCK_DGRAM: // UDP Socket + { + if(WSARecvFrom(eh->GetFd(), &buf, 1, &r_length, &flags, 0, 0, &ov->m_overlap, 0)) + { + int err = WSAGetLastError(); + if(WSAGetLastError() != WSA_IO_PENDING) + { + delete ov; + PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0); + return; + } + } + }break; + + case SOCK_STREAM: // TCP Socket + { + if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR) + { + if(WSAGetLastError() != WSA_IO_PENDING) + { + delete ov; + PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0); + return; + } + } + }break; + + default: + { + printf("unknwon socket type: %u\n", sock_type); + assert(false); + }break; + } + eh->m_readEvent = (void*)ov; +} + +int IOCPEngine::DispatchEvents() +{ + DWORD len; + LPOVERLAPPED overlap; + Overlapped * ov; + EventHandler * eh; + int intfd; + int ret; + unsigned long bytes_recv; + + while(GetQueuedCompletionStatus(m_completionPort, &len, (PULONG_PTR)&intfd, &overlap, 100)) + { + // woot, we got an event on a socket :P + eh = ref[intfd]; + ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap); + if(eh == 0) continue; + switch(ov->m_event) + { + case SOCKET_IO_EVENT_WRITE_READY: + { + eh->m_writeEvent = 0; + eh->HandleEvent(EVENT_WRITE, 0); + }break; + + case SOCKET_IO_EVENT_READ_READY: + { + ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv); + eh->m_readEvent = 0; + if(ret != 0 || bytes_recv == 0) + { + // end of file + PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); + } + else + { + eh->HandleEvent(EVENT_READ, 0); + PostReadEvent(eh); + } + }break; + + case SOCKET_IO_EVENT_ACCEPT: + { + /* this is kinda messy.. :/ */ + eh->HandleEvent(EVENT_READ, ov->m_params); + delete ((accept_overlap*)ov->m_params); + eh->m_acceptEvent = 0; + PostAcceptEvent(eh); + }break; + + case SOCKET_IO_EVENT_ERROR: + { + eh->HandleEvent(EVENT_ERROR, ov->m_params); + }break; + } + + delete ov; + } + + return 0; +} + +void IOCPEngine::PostAcceptEvent(EventHandler * eh) +{ + int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED); + int len = sizeof(sockaddr_in) + 16; + DWORD dwBytes; + accept_overlap * ao = new accept_overlap; + memset(ao->buf, 0, 1024); + ao->socket = fd; + + Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao); + eh->m_acceptEvent = (void*)ov; + + if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE) + { + int err = WSAGetLastError(); + if(err != WSA_IO_PENDING) + { + printf("PostAcceptEvent err: %d\n", err); + } + } +} + + +std::string IOCPEngine::GetName() +{ + return "iocp"; +} + +int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent) +{ + Overlapped * ovl = (Overlapped*)acceptevent; + accept_overlap * ov = (accept_overlap*)ovl->m_params; + + sockaddr_in * server_address = (sockaddr_in*)&ov->buf[10]; + sockaddr_in * client_address = (sockaddr_in*)&ov->buf[38]; + + memcpy(addr, client_address, sizeof(sockaddr_in)); + *addrlen = sizeof(sockaddr_in); + + return ov->socket; +} + +int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent) +{ + Overlapped * ovl = (Overlapped*)acceptevent; + accept_overlap * ov = (accept_overlap*)ovl->m_params; + + sockaddr_in * server_address = (sockaddr_in*)&ov->buf[10]; + sockaddr_in * client_address = (sockaddr_in*)&ov->buf[38]; + + memcpy(name, server_address, sizeof(sockaddr_in)); + *namelen = sizeof(sockaddr_in); + + return 0; +} + +EventHandler * IOCPEngine::GetRef(int fd) +{ + map::iterator itr = m_binding.find(fd); + return (itr == m_binding.end()) ? 0 : itr->second; +} + +bool IOCPEngine::HasFd(int fd) +{ + return (GetRef(fd) != 0); +} + +EventHandler * IOCPEngine::GetIntRef(int fd) +{ + if(fd < 0 || fd > MAX_DESCRIPTORS) + return 0; + return ref[fd]; +} -- cgit v1.2.3