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author | Roland McGrath <roland@gnu.org> | 1996-07-04 00:07:18 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1996-07-04 00:07:18 +0000 |
commit | 503054c0dd57109017b36870c430dab00fccaa8b (patch) | |
tree | e3788a147156c19d4cf38cc8da0bfcf8d3c6c109 /misc/sys/select.h | |
parent | 175b633d811d6427fb9206c2bed6aa49f8500b36 (diff) | |
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Wed Jul 3 16:29:41 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>cvs/libc-960705cvs/libc-960704
* nss/getXXbyYY_r.c (REENTRANT_NAME): Cast FCT in __nss_next call.
* sysdeps/generic/sbrk.c: Always call __brk (0) to update __curbrk.
* malloc/malloc-size.c (malloc_usable_size): Renamed from
malloc_object_allocation_size.
* malloc/malloc.h: Fix decl.
* sys/select.h: New file, wrapper header.
* posix/sys/types.h [__USE_BSD]: Include <sys/select.h>; remove
fd_set, associated macros, and select decl.
* sysdeps/posix/isfdtype.c: New file.
Tue Jul 2 23:45:14 1996 Ulrich Drepper <drepper@cygnus.com>
The latest Japanese proposal for POSIX locales renames the
CHARMAP keyword in locale definition files to CHARCONV.
* locale/programs/ld-ctype.c, locale/programs/locales.h: Rename
function ctype_is_charmap to ctype_is_charconv.
* locale/programs/locfile-kw.gperf: Replace charmap keyword with
charconv.
* locale/programs/locfile-token.h: Add definition of token
charconv.
* locale/programs/locfile.c: Recognize charconv keyword. Rename
lables according to this.
* locale/weight.h (get_weight): Cast constants to prevent
warnings.
* stdlib/strtod.c, stdlib/strtol.c, string/strcoll.c,
string/strxfrm.c: Add some more casts to prevent signed<->unsigned
warnings.
New stuff described in P1003.1g.
* misc/Makefile (headers): Add sys/select.h.
(routines): Add pselect.
* misc/sys/select.h: New file. Declare select functions and
needed data types and macros.
* sysdeps/generic/pselect.c: New file. Add generic implementation
of pselect() function which uses select().
* posix/getconf.c: Recognize new variables from P1003.1g.
* posix/posix1_lim.h: Define _POSIX_FD_SETSIZE, _POSIX_QLIMIT,
_POSIX_HIWAT, and _POSIX_UIO_MAXIOV.
* posix/unistd.h: Add description of the P1003.1g variables.
* sysdeps/generic/confname.h: Define _SC_* values for new
variables.
* sysdeps/posix/fpathconf.c (fpathconf): Add handling of
_PC_SOCK_MAXBUF.
* sysdeps/stub/fpathconf.c (fpathconf): Ditto.
* sysdeps/posix/sysconf.c (sysconf): Add handling of new
P1003.1g variables.
* sysdeps/stub/sysconf.c (sysconf): Ditto.
* sysdeps/unix/sysv/linux/posix_opt.h: Define _POSIX_POLL and
_POSIX_SELECT since Linux has this.
* socket/Makefile (routines): Add isfdtype.
* sysdeps/generic/sys/socket.h: Add prototype for isfdtype.
* sysdeps/stub/isfdtype.c: New file. Stub implementation of
isfdtype.
* wcsmbs/wcrtomb.c (wcrtomb): Fix typo.
Diffstat (limited to 'misc/sys/select.h')
-rw-r--r-- | misc/sys/select.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/misc/sys/select.h b/misc/sys/select.h new file mode 100644 index 0000000000..ece1916c0d --- /dev/null +++ b/misc/sys/select.h @@ -0,0 +1,81 @@ +/* `fd_set' type and related macros, and `select'/`pselect' declarations. +Copyright (C) 1996 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h> */ + +#ifndef __SYS_SELECT_H + +#define __SYS_SELECT_H 1 +#include <features.h> + +/* Get definition of needed basic types. */ +#include <gnu/types.h> + +/* Get definition of timer specification structures. */ +/* XXX this is wrong. 1003.1gD6.1 says `struct timespec' + is defined by <sys/select.h>, and that is all. + However, since a program is required to include <sys/time.h> + before using select/pselect anyway, perhaps it doesn't matter. */ +#include <sys/time.h> + +__BEGIN_DECLS + +/* Representation of a set of file descriptors. */ +#define fd_set __fd_set + +/* Maximum number of file descriptors in `fd_set'. */ +#define FD_SETSIZE __FD_SETSIZE + +#ifdef __USE_MISC +/* Number of bits per word of `fd_set' (some code assumes this is 32). */ +#define NFDBITS __NFDBITS +#endif + + +/* Access macros for `fd_set'. */ +#define FD_SET(fd, fdsetp) __FD_SET ((fd), (fdsetp)) +#define FD_CLR(fd, fdsetp) __FD_CLR ((fd), (fdsetp)) +#define FD_ISSET(fd, fdsetp) __FD_ISSET ((fd), (fdsetp)) +#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp) + + +/* Check the first NFDS descriptors each in READFDS (if not NULL) for read + readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS + (if not NULL) for exceptional conditions. If TIMEOUT is not NULL, time out + after waiting the interval specified therein. Returns the number of ready + descriptors, or -1 for errors. */ +extern int __select __P ((int __nfds, __fd_set *__readfds, + __fd_set *__writefds, __fd_set *__exceptfds, + struct timeval *__timeout)); +extern int select __P ((int __nfds, __fd_set *__readfds, + __fd_set *__writefds, __fd_set *__exceptfds, + struct timeval *__timeout)); + +/* Same as above only that the TIMEOUT value is given with higher + resolution. This version should be used. */ +extern int __pselect __P ((int __nfds, __fd_set *__readfds, + __fd_set *__writefds, __fd_set *__exceptfds, + struct timespec *__timeout)); +extern int pselect __P ((int __nfds, __fd_set *__readfds, + __fd_set *__writefds, __fd_set *__exceptfds, + struct timespec *__timeout)); + +__END_DECLS + +#endif /* sys/select.h */ |