diff options
Diffstat (limited to 'src/util/k5ev/ev_win32.c')
| -rw-r--r-- | src/util/k5ev/ev_win32.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/util/k5ev/ev_win32.c b/src/util/k5ev/ev_win32.c new file mode 100644 index 0000000000..338886efe4 --- /dev/null +++ b/src/util/k5ev/ev_win32.c @@ -0,0 +1,153 @@ +/* + * 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 + +/* timeb.h is actually xsi legacy functionality */ +#include <sys/timeb.h> + +/* 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; + +/* 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 = socket (AF_INET, SOCK_STREAM, 0)) == 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] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) + goto fail; + + if (connect (sock [0], (struct sockaddr *)&addr, addr_size)) + goto fail; + + 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; + + /* msvc cannot convert ulonglong to double... yes, it is that sucky */ + return (LONGLONG)(ui.QuadPart - 116444736000000000) * 1e-7; +} + +#endif + |