diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/socketengine_iocp.cpp | 323 |
1 files changed, 323 insertions, 0 deletions
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 <mswsock.h>
+#include <assert.h>
+
+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<int, EventHandler*>::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<int, EventHandler*>::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]; +} |