libev/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

/* 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;

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;

  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

Revision:	1.15
Committed:	Sun Feb 19 02:03:11 2012 UTC (12 years, 2 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 *
#	User	Rev	Content
1	root	1.1	/*
2	root	1.4	* libev win32 compatibility cruft (_not_ a backend)
3	root	1.1	*
4	root	1.10	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	root	1.1	* All rights reserved.
6			*
7	root	1.4	* Redistribution and use in source and binary forms, with or without modifica-
8			* tion, are permitted provided that the following conditions are met:
9	root	1.14	*
10	root	1.4	* 1. Redistributions of source code must retain the above copyright notice,
11			* this list of conditions and the following disclaimer.
12	root	1.14	*
13	root	1.4	* 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	root	1.14	*
17	root	1.4	* 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	root	1.1	*
28	root	1.4	* 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	root	1.1	*/
39
40	root	1.2	#ifdef _WIN32
41	root	1.1
42	root	1.6	/* timeb.h is actually xsi legacy functionality */
43	root	1.1	#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	root	1.6	/* my wild guess would be that using something floating-pointy is required */
48			/* for the crt to do something about it */
49	root	1.14	volatile double SIGFPE_REQ = 0.0f;
50	root	1.1
51	root	1.15	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	root	1.1	/* 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	root	1.7	struct sockaddr_in adr2;
68	root	1.9	int adr2_size = sizeof (adr2);
69	root	1.1	SOCKET listener;
70			SOCKET sock [2] = { -1, -1 };
71
72	root	1.15	if ((listener = ev_tcp_socket ()) == INVALID_SOCKET)
73	root	1.1	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	root	1.7	if (getsockname (listener, (struct sockaddr *)&addr, &addr_size))
83	root	1.1	goto fail;
84
85			if (listen (listener, 1))
86			goto fail;
87
88	root	1.15	if ((sock [0] = ev_tcp_socket ()) == INVALID_SOCKET)
89	root	1.1	goto fail;
90
91	root	1.7	if (connect (sock [0], (struct sockaddr *)&addr, addr_size))
92	root	1.1	goto fail;
93
94	root	1.7	if ((sock [1] = accept (listener, 0, 0)) < 0)
95			goto fail;
96
97	root	1.8	/* windows vista returns fantasy port numbers for sockets:
98	root	1.7	* 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	root	1.1	goto fail;
120
121			closesocket (listener);
122
123	root	1.3	#if EV_SELECT_IS_WINSOCKET
124	root	1.13	filedes [0] = EV_WIN32_HANDLE_TO_FD (sock [0]);
125			filedes [1] = EV_WIN32_HANDLE_TO_FD (sock [1]);
126	root	1.3	#else
127			/* when select isn't winsocket, we also expect socket, connect, accept etc.
128			* to work on fds */
129	root	1.1	filedes [0] = sock [0];
130			filedes [1] = sock [1];
131	root	1.3	#endif
132	root	1.1
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	root	1.11
147			#define EV_HAVE_EV_TIME 1
148			ev_tstamp
149			ev_time (void)
150	root	1.1	{
151	root	1.11	FILETIME ft;
152			ULARGE_INTEGER ui;
153	root	1.1
154	root	1.11	GetSystemTimeAsFileTime (&ft);
155			ui.u.LowPart = ft.dwLowDateTime;
156			ui.u.HighPart = ft.dwHighDateTime;
157	root	1.1
158	root	1.11	/* msvc cannot convert ulonglong to double... yes, it is that sucky */
159	root	1.12	return (LONGLONG)(ui.QuadPart - 116444736000000000) * 1e-7;
160	root	1.1	}
161
162			#endif
163	root	1.2