1/* posixselect.h -- wrapper for select(2) includes and definitions */
2
3/* Copyright (C) 2009 Free Software Foundation, Inc.
4
5   This file is part of GNU Bash, the Bourne Again SHell.
6
7   Bash is free software: you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation, either version 3 of the License, or
10   (at your option) any later version.
11
12   Bash is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#ifndef _POSIXSELECT_H_
22#define _POSIXSELECT_H_
23
24#if defined (FD_SET) && !defined (HAVE_SELECT)
25#  define HAVE_SELECT 1
26#endif
27
28#if defined (HAVE_SELECT)
29#  if !defined (HAVE_SYS_SELECT_H) || !defined (M_UNIX)
30#    include <sys/time.h>
31#  endif
32#endif /* HAVE_SELECT */
33#if defined (HAVE_SYS_SELECT_H)
34#  include <sys/select.h>
35#endif
36
37#ifndef USEC_PER_SEC
38#  define USEC_PER_SEC 1000000
39#endif
40
41#define USEC_TO_TIMEVAL(us, tv) \
42do { \
43  (tv).tv_sec = (us) / USEC_PER_SEC; \
44  (tv).tv_usec = (us) % USEC_PER_SEC; \
45} while (0)
46
47#endif /* _POSIXSELECT_H_ */
48