1 /* 2 * libev win32 compatibility cruft (_not_ a backend) 3 * 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without modifica- 8 * tion, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 26 * OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Alternatively, the contents of this file may be used under the terms of 29 * the GNU General Public License ("GPL") version 2 or any later version, 30 * in which case the provisions of the GPL are applicable instead of 31 * the above. If you wish to allow the use of your version of this file 32 * only under the terms of the GPL and not to allow others to use your 33 * version of this file under the BSD license, indicate your decision 34 * by deleting the provisions above and replace them with the notice 35 * and other provisions required by the GPL. If you do not delete the 36 * provisions above, a recipient may use your version of this file under 37 * either the BSD or the GPL. 38 */ 39 40 #ifdef _WIN32 41 42 /* note: the comment below could not be substantiated, but what would I care */ 43 /* MSDN says this is required to handle SIGFPE */ 44 /* my wild guess would be that using something floating-pointy is required */ 45 /* for the crt to do something about it */ 46 volatile double SIGFPE_REQ = 0.0f; 47 48 static SOCKET 49 ev_tcp_socket (void) 50 { 51 #if EV_USE_WSASOCKET 52 return WSASocket (AF_INET, SOCK_STREAM, 0, 0, 0, 0); 53 #else 54 return socket (AF_INET, SOCK_STREAM, 0); 55 #endif 56 } 57 58 /* oh, the humanity! */ 59 static int 60 ev_pipe (int filedes [2]) 61 { 62 struct sockaddr_in addr = { 0 }; 63 int addr_size = sizeof (addr); 64 struct sockaddr_in adr2; 65 int adr2_size = sizeof (adr2); 66 SOCKET listener; 67 SOCKET sock [2] = { -1, -1 }; 68 69 if ((listener = ev_tcp_socket ()) == INVALID_SOCKET) 70 return -1; 71 72 addr.sin_family = AF_INET; 73 addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); 74 addr.sin_port = 0; 75 76 if (bind (listener, (struct sockaddr *)&addr, addr_size)) 77 goto fail; 78 79 if (getsockname (listener, (struct sockaddr *)&addr, &addr_size)) 80 goto fail; 81 82 if (listen (listener, 1)) 83 goto fail; 84 85 if ((sock [0] = ev_tcp_socket ()) == INVALID_SOCKET) 86 goto fail; 87 88 if (connect (sock [0], (struct sockaddr *)&addr, addr_size)) 89 goto fail; 90 91 /* TODO: returns INVALID_SOCKET on winsock accept, not < 0. fix it */ 92 /* when convenient, probably by just removing error checking altogether? */ 93 if ((sock [1] = accept (listener, 0, 0)) < 0) 94 goto fail; 95 96 /* windows vista returns fantasy port numbers for sockets: 97 * example for two interconnected tcp sockets: 98 * 99 * (Socket::unpack_sockaddr_in getsockname $sock0)[0] == 53364 100 * (Socket::unpack_sockaddr_in getpeername $sock0)[0] == 53363 101 * (Socket::unpack_sockaddr_in getsockname $sock1)[0] == 53363 102 * (Socket::unpack_sockaddr_in getpeername $sock1)[0] == 53365 103 * 104 * wow! tridirectional sockets! 105 * 106 * this way of checking ports seems to work: 107 */ 108 if (getpeername (sock [0], (struct sockaddr *)&addr, &addr_size)) 109 goto fail; 110 111 if (getsockname (sock [1], (struct sockaddr *)&adr2, &adr2_size)) 112 goto fail; 113 114 errno = WSAEINVAL; 115 if (addr_size != adr2_size 116 || addr.sin_addr.s_addr != adr2.sin_addr.s_addr /* just to be sure, I mean, it's windows */ 117 || addr.sin_port != adr2.sin_port) 118 goto fail; 119 120 closesocket (listener); 121 122 #if EV_SELECT_IS_WINSOCKET 123 filedes [0] = EV_WIN32_HANDLE_TO_FD (sock [0]); 124 filedes [1] = EV_WIN32_HANDLE_TO_FD (sock [1]); 125 #else 126 /* when select isn't winsocket, we also expect socket, connect, accept etc. 127 * to work on fds */ 128 filedes [0] = sock [0]; 129 filedes [1] = sock [1]; 130 #endif 131 132 return 0; 133 134 fail: 135 closesocket (listener); 136 137 if (sock [0] != INVALID_SOCKET) closesocket (sock [0]); 138 if (sock [1] != INVALID_SOCKET) closesocket (sock [1]); 139 140 return -1; 141 } 142 143 #undef pipe 144 #define pipe(filedes) ev_pipe (filedes) 145 146 #define EV_HAVE_EV_TIME 1 147 ev_tstamp 148 ev_time (void) 149 { 150 FILETIME ft; 151 ULARGE_INTEGER ui; 152 153 GetSystemTimeAsFileTime (&ft); 154 ui.u.LowPart = ft.dwLowDateTime; 155 ui.u.HighPart = ft.dwHighDateTime; 156 157 /* msvc cannot convert ulonglong to double... yes, it is that sucky */ 158 return (LONGLONG)(ui.QuadPart - 116444736000000000) * 1e-7; 159 } 160 161 #endif 162 163