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authorRoland McGrath <roland@gnu.org>1996-07-04 00:07:18 +0000
committerRoland McGrath <roland@gnu.org>1996-07-04 00:07:18 +0000
commit503054c0dd57109017b36870c430dab00fccaa8b (patch)
treee3788a147156c19d4cf38cc8da0bfcf8d3c6c109 /misc/sys/select.h
parent175b633d811d6427fb9206c2bed6aa49f8500b36 (diff)
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Wed Jul 3 16:29:41 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> cvs/libc-960705 cvs/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.h81
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 */