glibc/bits/poll.h

/* Copyright (C) 1997 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.  */


/* Event types that can be polled for.  These bits may be set in `events'
   to indicate the interesting event types; they will appear in `revents'
   to indicate the status of the file descriptor.  */
#define POLLIN		01              /* There is data to read.  */
#define POLLPRI		02              /* There is urgent data to read.  */
#define POLLOUT		04              /* Writing now will not block.  */

/* Some aliases.  */
#define POLLWRNORM	POLLOUT

/* Event types always implicitly polled for.  These bits need not be set in
   `events', but they will appear in `revents' to indicate the status of
   the file descriptor.  */
#define POLLERR         010             /* Error condition.  */
#define POLLHUP         020             /* Hung up.  */
#define POLLNVAL        040             /* Invalid polling request.  */

/* Canonical number of polling requests to read in at a time in poll.  */
#define NPOLLFILE	30
Update. 1997-08-29 02:36 Ulrich Drepper <drepper@cygnus.com> * Makefile (version-info.h): Use ISO form for the date. * catgets/catgetsinfo.h: Include <bits/libc-lock.h>. (struct catalog_obj): Add lock field. (__open_catalog): Remove second parameter from prototype. * catgets/catgets.c (catopen): Initialize lock field. (catgets): Don't pass second parameter to __open_catalog. * catgets/gencat.c: Initialize lock field and don't pass second parameter to __open_catalog. * catgets/open_catalog.c (__open_catalog): Decide about use of path by examining path in struct, not based on extra argument. Acquire a the lock before trying to load the catalog and release it before returning. * csu/Makefile (abi-tag.h): Make sure target directory exists. * io/Makefile (headers): Add bits/poll.h. * io/sys/poll.h: Remove definitions of POLL* constants. Include <bits/poll.h>. * sysdeps/generic/bits/poll.h: New file. * sysdeps/unix/sysv/linux/bits/poll.h: New file. * sysdeps/unix/sysv/linux/m68k/bits/poll.h: New file. * sysdeps/unix/sysv/linux/mips/bits/poll.h: New file. * sysdeps/unix/sysv/linux/sparc/bits/poll.h: New file. * libio/fileops.c (_IO_file_read, _IO_file_write): Remove dead code. * malloc/obstack.c: Add casts to keep very verbose compilers on 64bit machine quiet. * nss/Makefile (libnss_db.so): Find libdb.so in db2 directory. 1997-08-28 17:30 Ulrich Drepper <drepper@cygnus.com> * catgets/catgets.c (catopen): Correctly determine length of string in NLSPATH evironment variable. Patch by HJ Lu <hjl@gnu.ai.mit.edu>. 1997-08-27 23:19 Richard Henderson <rth@cygnus.com> * sysdeps/generic/dl-sysdep.c (DL_FIND_ARG_COMPONENTS): Provide default macro to track down arguments from stack start. (_dl_sysdep_start): Use it. * sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Truncate to simply providing a special DL_FIND_ARG_COMPONENTS and including the next file up the line. * sysdeps/powerpc/e_sqrt.c: Move contents to w_sqrt.c and provide stub. * sysdeps/powerpc/e_sqrtf.c: Likewise. * sysdeps/powerpc/s_copysignf.S: Provide empty file; symbol is with the double precision version. * sysdeps/powerpc/s_fabsf.S: Likewise. * sysdeps/powerpc/s_isnanf.S: Likewise. 1997-08-29 01:19:12 +00:00			`/* Copyright (C) 1997 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. */`


			/* Event types that can be polled for. These bits may be set in `events'
			to indicate the interesting event types; they will appear in `revents'
			`to indicate the status of the file descriptor. */`
			`#define POLLIN 01 /* There is data to read. */`
			`#define POLLPRI 02 /* There is urgent data to read. */`
			`#define POLLOUT 04 /* Writing now will not block. */`

			`/* Some aliases. */`
			`#define POLLWRNORM POLLOUT`

			`/* Event types always implicitly polled for. These bits need not be set in`
			`events', but they will appear in `revents' to indicate the status of
			`the file descriptor. */`
			`#define POLLERR 010 /* Error condition. */`
			`#define POLLHUP 020 /* Hung up. */`
			`#define POLLNVAL 040 /* Invalid polling request. */`

			`/* Canonical number of polling requests to read in at a time in poll. */`
			`#define NPOLLFILE 30`