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comparison tango/tango/stdc/posix/sys/select.d @ 132:1700239cab2e trunk

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[svn r136] MAJOR UNSTABLE UPDATE!!! Initial commit after moving to Tango instead of Phobos. Lots of bugfixes... This build is not suitable for most things.
author lindquist
date Fri, 11 Jan 2008 17:57:40 +0100
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131:5825d48b27d1 132:1700239cab2e
1 /**
2 * D header file for POSIX.
3 *
4 * Copyright: Public Domain
5 * License: Public Domain
6 * Authors: Sean Kelly
7 * Standards: The Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Edition
8 */
9 module tango.stdc.posix.sys.select;
10
11 private import tango.stdc.posix.config;
12 public import tango.stdc.time; // for timespec
13 public import tango.stdc.posix.sys.time; // for timeval
14 public import tango.stdc.posix.sys.types; // for time_t
15 public import tango.stdc.posix.signal; // for sigset_t
16
17 extern (C):
18
19 //
20 // Required
21 //
22 /*
23 NOTE: This module requires timeval from tango.stdc.posix.sys.time, but timeval
24 is supposedly an XOpen extension. As a result, this header will not
25 compile on platforms that are not XSI-compliant. This must be resolved
26 on a per-platform basis.
27
28 fd_set
29
30 void FD_CLR(int fd, fd_set* fdset);
31 int FD_ISSET(int fd, fd_set* fdset);
32 void FD_SET(int fd, fd_set* fdset);
33 void FD_ZERO(fd_set* fdset);
34
35 FD_SETSIZE
36
37 int pselect(int, fd_set*, fd_set*, fd_set*, timespec*, sigset_t*);
38 int select(int, fd_set*, fd_set*, fd_set*, timeval*);
39 */
40
41 version( linux )
42 {
43 private
44 {
45 alias c_long __fd_mask;
46 const __NFDBITS = 8 * __fd_mask.sizeof;
47
48 extern (D) int __FDELT( int d )
49 {
50 return d / __NFDBITS;
51 }
52
53 extern (D) int __FDMASK( int d )
54 {
55 return cast(__fd_mask) 1 << ( d % __NFDBITS );
56 }
57 }
58
59 const FD_SETSIZE = 1024;
60
61 struct fd_set
62 {
63 __fd_mask[FD_SETSIZE / __NFDBITS] fds_bits;
64 }
65
66 extern (D) void FD_CLR( int fd, fd_set* fdset )
67 {
68 fdset.fds_bits[__FDELT( fd )] &= ~__FDMASK( fd );
69 }
70
71 extern (D) int FD_ISSET( int fd, fd_set* fdset )
72 {
73 return fdset.fds_bits[__FDELT( fd )] & __FDMASK( fd );
74 }
75
76 extern (D) void FD_SET( int fd, fd_set* fdset )
77 {
78 fdset.fds_bits[__FDELT( fd )] |= __FDMASK( fd );
79 }
80
81 extern (D) void FD_ZERO( fd_set* fdset )
82 {
83 fdset.fds_bits[0 .. $] = 0;
84 }
85
86 /+
87 + GNU ASM Implementation
88 +
89 # define __FD_ZERO(fdsp) \
90 do { \
91 int __d0, __d1; \
92 __asm__ __volatile__ ("cld; rep; stosl" \
93 : "=c" (__d0), "=D" (__d1) \
94 : "a" (0), "0" (sizeof (fd_set) \
95 / sizeof (__fd_mask)), \
96 "1" (&__FDS_BITS (fdsp)[0]) \
97 : "memory"); \
98 } while (0)
99
100 # define __FD_SET(fd, fdsp) \
101 __asm__ __volatile__ ("btsl %1,%0" \
102 : "=m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \
103 : "r" (((int) (fd)) % __NFDBITS) \
104 : "cc","memory")
105 # define __FD_CLR(fd, fdsp) \
106 __asm__ __volatile__ ("btrl %1,%0" \
107 : "=m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \
108 : "r" (((int) (fd)) % __NFDBITS) \
109 : "cc","memory")
110 # define __FD_ISSET(fd, fdsp) \
111 (__extension__ \
112 ({register char __result; \
113 __asm__ __volatile__ ("btl %1,%2 ; setcb %b0" \
114 : "=q" (__result) \
115 : "r" (((int) (fd)) % __NFDBITS), \
116 "m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \
117 : "cc"); \
118 __result; }))
119 +/
120
121 int pselect(int, fd_set*, fd_set*, fd_set*, timespec*, sigset_t*);
122 int select(int, fd_set*, fd_set*, fd_set*, timeval*);
123 }
124 else version( darwin )
125 {
126 private
127 {
128 const uint __DARWIN_NBBY = 8; /* bits in a byte */
129 const uint __DARWIN_NFDBITS = (int.sizeof * __DARWIN_NBBY); /* bits per mask */
130 }
131
132 const FD_SETSIZE = 1024;
133
134 struct fd_set
135 {
136 int fds_bits[(((FD_SETSIZE) + ((__DARWIN_NFDBITS) - 1)) / (__DARWIN_NFDBITS))];
137 }
138 }