mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-09 04:11:27 +08:00
c2afe83352
[USE_TLS && HAVE___THREAD]: Just include the sysdeps/generic file, which does the right thing when __thread support is available. * descr.h (struct _pthread_descr_struct) [USE_TLS && HAVE___THREAD]: Omit `p_libc_specific', `p_errnop', `p_errno', `p_h_errnop', `p_h_errno', `p_resp', and `p_res' members. * pthread.c (__pthread_initialize_minimal) [USE_TLS && HAVE___THREAD]: Don't initialize `p_errnop' and `p_h_errnop' members. (__pthread_reset_main_thread): Likewise. (__pthread_initialize_manager): Likewise. * manager.c (__pthread_manager, pthread_handle_create): Likewise. * pthread.c (pthread_initialize) [USE_TLS && HAVE___THREAD]: Don't initialize `p_resp' member. (__pthread_reset_main_thread): Likewise. * manager.c (pthread_handle_create): Likewise. * specific.c (libc_internal_tsd_set, libc_internal_tsd_get): Conditionalize these on [!(USE_TLS && HAVE___THREAD)]. * errno.c [USE_TLS && HAVE___THREAD] (__h_errno_location, __res_state): Don't define these at all. * sysdeps/i386/tls.h (INSTALL_DTV): Add parens around arguments! (INSTALL_NEW_DTV, GET_DTV): Likewise. * sysdeps/sh/tls.h (INSTALL_DTV, INSTALL_NEW_DTV, GET_DTV): Likewise. * weaks.c: Don't include <errno.h> here. 2002-08-01 Roland McGrath <roland@redhat.com> * sysdeps/i386/tls.h (TLS_DO_MODIFY_LDT): New macro, broken out of TLS_INIT_TP. (TLS_DO_SET_THREAD_AREA): New macro, uses thread_set_area syscall. (TLS_SETUP_GS_SEGMENT): New macro, try one or the other or both. (TLS_INIT_TP): Use that.
125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/* `fd_set' type and related macros, and `select'/`pselect' declarations.
|
|
Copyright (C) 1996,97,98,99,2000,01,02 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; 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 <bits/types.h>
|
|
|
|
/* Get __FD_* definitions. */
|
|
#include <bits/select.h>
|
|
|
|
/* Get __sigset_t. */
|
|
#include <bits/sigset.h>
|
|
|
|
#ifndef __sigset_t_defined
|
|
# define __sigset_t_defined
|
|
typedef __sigset_t sigset_t;
|
|
#endif
|
|
|
|
/* Get definition of timer specification structures. */
|
|
#define __need_time_t
|
|
#define __need_timespec
|
|
#include <time.h>
|
|
#define __need_timeval
|
|
#include <bits/time.h>
|
|
|
|
#ifndef __suseconds_t_defined
|
|
typedef __suseconds_t suseconds_t;
|
|
# define __suseconds_t_defined
|
|
#endif
|
|
|
|
|
|
/* The fd_set member is required to be an array of longs. */
|
|
typedef long int __fd_mask;
|
|
|
|
/* Some versions of <linux/posix_types.h> define these macros. */
|
|
#undef __NFDBITS
|
|
#undef __FDELT
|
|
#undef __FDMASK
|
|
/* It's easier to assume 8-bit bytes than to get CHAR_BIT. */
|
|
#define __NFDBITS (8 * sizeof (__fd_mask))
|
|
#define __FDELT(d) ((d) / __NFDBITS)
|
|
#define __FDMASK(d) ((__fd_mask) 1 << ((d) % __NFDBITS))
|
|
|
|
/* fd_set for select and pselect. */
|
|
typedef struct
|
|
{
|
|
/* XPG4.2 requires this member name. Otherwise avoid the name
|
|
from the global namespace. */
|
|
#ifdef __USE_XOPEN
|
|
__fd_mask fds_bits[__FD_SETSIZE / __NFDBITS];
|
|
# define __FDS_BITS(set) ((set)->fds_bits)
|
|
#else
|
|
__fd_mask __fds_bits[__FD_SETSIZE / __NFDBITS];
|
|
# define __FDS_BITS(set) ((set)->__fds_bits)
|
|
#endif
|
|
} fd_set;
|
|
|
|
/* Maximum number of file descriptors in `fd_set'. */
|
|
#define FD_SETSIZE __FD_SETSIZE
|
|
|
|
#ifdef __USE_MISC
|
|
/* Sometimes the fd_set member is assumed to have this type. */
|
|
typedef __fd_mask fd_mask;
|
|
|
|
/* 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)
|
|
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* 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 (int __nfds, fd_set *__restrict __readfds,
|
|
fd_set *__restrict __writefds,
|
|
fd_set *__restrict __exceptfds,
|
|
struct timeval *__restrict __timeout) __THROW;
|
|
|
|
#ifdef __USE_XOPEN2K
|
|
/* Same as above only that the TIMEOUT value is given with higher
|
|
resolution and a sigmask which is been set temporarily. This version
|
|
should be used. */
|
|
extern int pselect (int __nfds, fd_set *__restrict __readfds,
|
|
fd_set *__restrict __writefds,
|
|
fd_set *__restrict __exceptfds,
|
|
const struct timespec *__restrict __timeout,
|
|
const __sigset_t *__restrict __sigmask) __THROW;
|
|
#endif
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* sys/select.h */
|