Mercurial > projects > ldc
view tango/tango/stdc/posix/sys/select.d @ 132:1700239cab2e trunk
[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 |
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date | Fri, 11 Jan 2008 17:57:40 +0100 |
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/** * D header file for POSIX. * * Copyright: Public Domain * License: Public Domain * Authors: Sean Kelly * Standards: The Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Edition */ module tango.stdc.posix.sys.select; private import tango.stdc.posix.config; public import tango.stdc.time; // for timespec public import tango.stdc.posix.sys.time; // for timeval public import tango.stdc.posix.sys.types; // for time_t public import tango.stdc.posix.signal; // for sigset_t extern (C): // // Required // /* NOTE: This module requires timeval from tango.stdc.posix.sys.time, but timeval is supposedly an XOpen extension. As a result, this header will not compile on platforms that are not XSI-compliant. This must be resolved on a per-platform basis. fd_set void FD_CLR(int fd, fd_set* fdset); int FD_ISSET(int fd, fd_set* fdset); void FD_SET(int fd, fd_set* fdset); void FD_ZERO(fd_set* fdset); FD_SETSIZE int pselect(int, fd_set*, fd_set*, fd_set*, timespec*, sigset_t*); int select(int, fd_set*, fd_set*, fd_set*, timeval*); */ version( linux ) { private { alias c_long __fd_mask; const __NFDBITS = 8 * __fd_mask.sizeof; extern (D) int __FDELT( int d ) { return d / __NFDBITS; } extern (D) int __FDMASK( int d ) { return cast(__fd_mask) 1 << ( d % __NFDBITS ); } } const FD_SETSIZE = 1024; struct fd_set { __fd_mask[FD_SETSIZE / __NFDBITS] fds_bits; } extern (D) void FD_CLR( int fd, fd_set* fdset ) { fdset.fds_bits[__FDELT( fd )] &= ~__FDMASK( fd ); } extern (D) int FD_ISSET( int fd, fd_set* fdset ) { return fdset.fds_bits[__FDELT( fd )] & __FDMASK( fd ); } extern (D) void FD_SET( int fd, fd_set* fdset ) { fdset.fds_bits[__FDELT( fd )] |= __FDMASK( fd ); } extern (D) void FD_ZERO( fd_set* fdset ) { fdset.fds_bits[0 .. $] = 0; } /+ + GNU ASM Implementation + # define __FD_ZERO(fdsp) \ do { \ int __d0, __d1; \ __asm__ __volatile__ ("cld; rep; stosl" \ : "=c" (__d0), "=D" (__d1) \ : "a" (0), "0" (sizeof (fd_set) \ / sizeof (__fd_mask)), \ "1" (&__FDS_BITS (fdsp)[0]) \ : "memory"); \ } while (0) # define __FD_SET(fd, fdsp) \ __asm__ __volatile__ ("btsl %1,%0" \ : "=m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \ : "r" (((int) (fd)) % __NFDBITS) \ : "cc","memory") # define __FD_CLR(fd, fdsp) \ __asm__ __volatile__ ("btrl %1,%0" \ : "=m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \ : "r" (((int) (fd)) % __NFDBITS) \ : "cc","memory") # define __FD_ISSET(fd, fdsp) \ (__extension__ \ ({register char __result; \ __asm__ __volatile__ ("btl %1,%2 ; setcb %b0" \ : "=q" (__result) \ : "r" (((int) (fd)) % __NFDBITS), \ "m" (__FDS_BITS (fdsp)[__FDELT (fd)]) \ : "cc"); \ __result; })) +/ int pselect(int, fd_set*, fd_set*, fd_set*, timespec*, sigset_t*); int select(int, fd_set*, fd_set*, fd_set*, timeval*); } else version( darwin ) { private { const uint __DARWIN_NBBY = 8; /* bits in a byte */ const uint __DARWIN_NFDBITS = (int.sizeof * __DARWIN_NBBY); /* bits per mask */ } const FD_SETSIZE = 1024; struct fd_set { int fds_bits[(((FD_SETSIZE) + ((__DARWIN_NFDBITS) - 1)) / (__DARWIN_NFDBITS))]; } }