libev/ev_win32.c

/*
 * libev win32 compatibility cruft (_not_ a backend)
 *
 * Copyright (c) 2007,2008 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);
  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;

  closesocket (listener);

#if EV_SELECT_IS_WINSOCKET
  filedes [0] = _open_osfhandle (sock [0], 0);
  filedes [1] = _open_osfhandle (sock [1], 0);
#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)

static int
ev_gettimeofday (struct timeval *tv, struct timezone *tz)
{
  struct _timeb tb;

  _ftime (&tb);

  tv->tv_sec  = (long)tb.time;
  tv->tv_usec = ((long)tb.millitm) * 1000;

  return 0;
}

#undef gettimeofday
#define gettimeofday(tv,tz) ev_gettimeofday (tv, tz)

#endif

Revision:	1.6
Committed:	Fri Jun 20 23:31:19 2008 UTC (15 years, 10 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_51, rel-3_44, rel-3_45, rel-3_43, rel-3_48, rel-3_49, rel-3_431
Changes since 1.5:	+3 -0 lines
Log Message:	* empty log message *
#	Content
1	/*
2	* libev win32 compatibility cruft (_not_ a backend)
3	*
4	* Copyright (c) 2007,2008 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	/* oh, the humanity! */
52	static int
53	ev_pipe (int filedes [2])
54	{
55	struct sockaddr_in addr = { 0 };
56	int addr_size = sizeof (addr);
57	SOCKET listener;
58	SOCKET sock [2] = { -1, -1 };
59
60	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
61	return -1;
62
63	addr.sin_family = AF_INET;
64	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
65	addr.sin_port = 0;
66
67	if (bind (listener, (struct sockaddr *)&addr, addr_size))
68	goto fail;
69
70	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
71	goto fail;
72
73	if (listen (listener, 1))
74	goto fail;
75
76	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
77	goto fail;
78
79	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
80	goto fail;
81
82	if ((sock[1] = accept (listener, 0, 0)) < 0)
83	goto fail;
84
85	closesocket (listener);
86
87	#if EV_SELECT_IS_WINSOCKET
88	filedes [0] = _open_osfhandle (sock [0], 0);
89	filedes [1] = _open_osfhandle (sock [1], 0);
90	#else
91	/* when select isn't winsocket, we also expect socket, connect, accept etc.
92	* to work on fds */
93	filedes [0] = sock [0];
94	filedes [1] = sock [1];
95	#endif
96
97	return 0;
98
99	fail:
100	closesocket (listener);
101
102	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
103	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
104
105	return -1;
106	}
107
108	#undef pipe
109	#define pipe(filedes) ev_pipe (filedes)
110
111	static int
112	ev_gettimeofday (struct timeval tv, struct timezone tz)
113	{
114	struct _timeb tb;
115
116	_ftime (&tb);
117
118	tv->tv_sec = (long)tb.time;
119	tv->tv_usec = ((long)tb.millitm) * 1000;
120
121	return 0;
122	}
123
124	#undef gettimeofday
125	#define gettimeofday(tv,tz) ev_gettimeofday (tv, tz)
126
127	#endif
128