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Edit File: ev_win32.c
/* * libev win32 compatibility cruft (_not_ a backend) * * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> * All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- * tion, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, the contents of this file may be used under the terms of * the GNU General Public License ("GPL") version 2 or any later version, * in which case the provisions of the GPL are applicable instead of * the above. If you wish to allow the use of your version of this file * only under the terms of the GPL and not to allow others to use your * version of this file under the BSD license, indicate your decision * by deleting the provisions above and replace them with the notice * and other provisions required by the GPL. If you do not delete the * provisions above, a recipient may use your version of this file under * either the BSD or the GPL. */ #ifdef _WIN32 /* note: the comment below could not be substantiated, but what would I care */ /* MSDN says this is required to handle SIGFPE */ /* my wild guess would be that using something floating-pointy is required */ /* for the crt to do something about it */ volatile double SIGFPE_REQ = 0.0f; static SOCKET ev_tcp_socket (void) { #if EV_USE_WSASOCKET return WSASocket (AF_INET, SOCK_STREAM, 0, 0, 0, 0); #else return socket (AF_INET, SOCK_STREAM, 0); #endif } /* oh, the humanity! */ static int ev_pipe (int filedes [2]) { struct sockaddr_in addr = { 0 }; int addr_size = sizeof (addr); struct sockaddr_in adr2; int adr2_size = sizeof (adr2); SOCKET listener; SOCKET sock [2] = { -1, -1 }; if ((listener = ev_tcp_socket ()) == INVALID_SOCKET) return -1; addr.sin_family = AF_INET; addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); addr.sin_port = 0; if (bind (listener, (struct sockaddr *)&addr, addr_size)) goto fail; if (getsockname (listener, (struct sockaddr *)&addr, &addr_size)) goto fail; if (listen (listener, 1)) goto fail; if ((sock [0] = ev_tcp_socket ()) == INVALID_SOCKET) goto fail; if (connect (sock [0], (struct sockaddr *)&addr, addr_size)) goto fail; /* TODO: returns INVALID_SOCKET on winsock accept, not < 0. fix it */ /* when convenient, probably by just removing error checking altogether? */ if ((sock [1] = accept (listener, 0, 0)) < 0) goto fail; /* windows vista returns fantasy port numbers for sockets: * example for two interconnected tcp sockets: * * (Socket::unpack_sockaddr_in getsockname $sock0)[0] == 53364 * (Socket::unpack_sockaddr_in getpeername $sock0)[0] == 53363 * (Socket::unpack_sockaddr_in getsockname $sock1)[0] == 53363 * (Socket::unpack_sockaddr_in getpeername $sock1)[0] == 53365 * * wow! tridirectional sockets! * * this way of checking ports seems to work: */ if (getpeername (sock [0], (struct sockaddr *)&addr, &addr_size)) goto fail; if (getsockname (sock [1], (struct sockaddr *)&adr2, &adr2_size)) goto fail; errno = WSAEINVAL; if (addr_size != adr2_size || addr.sin_addr.s_addr != adr2.sin_addr.s_addr /* just to be sure, I mean, it's windows */ || addr.sin_port != adr2.sin_port) goto fail; closesocket (listener); #if EV_SELECT_IS_WINSOCKET filedes [0] = EV_WIN32_HANDLE_TO_FD (sock [0]); filedes [1] = EV_WIN32_HANDLE_TO_FD (sock [1]); #else /* when select isn't winsocket, we also expect socket, connect, accept etc. * to work on fds */ filedes [0] = sock [0]; filedes [1] = sock [1]; #endif return 0; fail: closesocket (listener); if (sock [0] != INVALID_SOCKET) closesocket (sock [0]); if (sock [1] != INVALID_SOCKET) closesocket (sock [1]); return -1; } #undef pipe #define pipe(filedes) ev_pipe (filedes) #define EV_HAVE_EV_TIME 1 ev_tstamp ev_time (void) { FILETIME ft; ULARGE_INTEGER ui; GetSystemTimeAsFileTime (&ft); ui.u.LowPart = ft.dwLowDateTime; ui.u.HighPart = ft.dwHighDateTime; /* also, msvc cannot convert ulonglong to double... yes, it is that sucky */ return EV_TS_FROM_USEC (((LONGLONG)(ui.QuadPart - 116444736000000000) * 1e-1)); } #endif