ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev_win32.c
Revision: 1.15
Committed: Sun Feb 19 02:03:11 2012 UTC (12 years, 5 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: rxvt-unicode-rel-9_16, rel-4_15
Changes since 1.14: +12 -2 lines
Log Message:
*** empty log message ***

File Contents

# Content
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 /* timeb.h is actually xsi legacy functionality */
43 #include <sys/timeb.h>
44
45 /* note: the comment below could not be substantiated, but what would I care */
46 /* MSDN says this is required to handle SIGFPE */
47 /* my wild guess would be that using something floating-pointy is required */
48 /* for the crt to do something about it */
49 volatile double SIGFPE_REQ = 0.0f;
50
51 static SOCKET
52 ev_tcp_socket (void)
53 {
54 #if EV_USE_WSASOCKET
55 return WSASocket (AF_INET, SOCK_STREAM, 0, 0, 0, 0);
56 #else
57 return socket (AF_INET, SOCK_STREAM, 0);
58 #endif
59 }
60
61 /* oh, the humanity! */
62 static int
63 ev_pipe (int filedes [2])
64 {
65 struct sockaddr_in addr = { 0 };
66 int addr_size = sizeof (addr);
67 struct sockaddr_in adr2;
68 int adr2_size = sizeof (adr2);
69 SOCKET listener;
70 SOCKET sock [2] = { -1, -1 };
71
72 if ((listener = ev_tcp_socket ()) == INVALID_SOCKET)
73 return -1;
74
75 addr.sin_family = AF_INET;
76 addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
77 addr.sin_port = 0;
78
79 if (bind (listener, (struct sockaddr *)&addr, addr_size))
80 goto fail;
81
82 if (getsockname (listener, (struct sockaddr *)&addr, &addr_size))
83 goto fail;
84
85 if (listen (listener, 1))
86 goto fail;
87
88 if ((sock [0] = ev_tcp_socket ()) == INVALID_SOCKET)
89 goto fail;
90
91 if (connect (sock [0], (struct sockaddr *)&addr, addr_size))
92 goto fail;
93
94 if ((sock [1] = accept (listener, 0, 0)) < 0)
95 goto fail;
96
97 /* windows vista returns fantasy port numbers for sockets:
98 * example for two interconnected tcp sockets:
99 *
100 * (Socket::unpack_sockaddr_in getsockname $sock0)[0] == 53364
101 * (Socket::unpack_sockaddr_in getpeername $sock0)[0] == 53363
102 * (Socket::unpack_sockaddr_in getsockname $sock1)[0] == 53363
103 * (Socket::unpack_sockaddr_in getpeername $sock1)[0] == 53365
104 *
105 * wow! tridirectional sockets!
106 *
107 * this way of checking ports seems to work:
108 */
109 if (getpeername (sock [0], (struct sockaddr *)&addr, &addr_size))
110 goto fail;
111
112 if (getsockname (sock [1], (struct sockaddr *)&adr2, &adr2_size))
113 goto fail;
114
115 errno = WSAEINVAL;
116 if (addr_size != adr2_size
117 || addr.sin_addr.s_addr != adr2.sin_addr.s_addr /* just to be sure, I mean, it's windows */
118 || addr.sin_port != adr2.sin_port)
119 goto fail;
120
121 closesocket (listener);
122
123 #if EV_SELECT_IS_WINSOCKET
124 filedes [0] = EV_WIN32_HANDLE_TO_FD (sock [0]);
125 filedes [1] = EV_WIN32_HANDLE_TO_FD (sock [1]);
126 #else
127 /* when select isn't winsocket, we also expect socket, connect, accept etc.
128 * to work on fds */
129 filedes [0] = sock [0];
130 filedes [1] = sock [1];
131 #endif
132
133 return 0;
134
135 fail:
136 closesocket (listener);
137
138 if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
139 if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
140
141 return -1;
142 }
143
144 #undef pipe
145 #define pipe(filedes) ev_pipe (filedes)
146
147 #define EV_HAVE_EV_TIME 1
148 ev_tstamp
149 ev_time (void)
150 {
151 FILETIME ft;
152 ULARGE_INTEGER ui;
153
154 GetSystemTimeAsFileTime (&ft);
155 ui.u.LowPart = ft.dwLowDateTime;
156 ui.u.HighPart = ft.dwHighDateTime;
157
158 /* msvc cannot convert ulonglong to double... yes, it is that sucky */
159 return (LONGLONG)(ui.QuadPart - 116444736000000000) * 1e-7;
160 }
161
162 #endif
163