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* sysdeps/unix/sysv/linux/ia64/sigsuspend.c: File removed.

Browse Source 
* sysdeps/unix/sysv/linux/x86_64/sigsuspend.c: File removed.
	* sysdeps/unix/sysv/linux/s390/s390-64/sigsuspend.c: File removed.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sigsuspend.c: File removed.

	* sysdeps/unix/sysv/linux/not-cancel.h (pause_not_cancel): New macro.
	(nanosleep_not_cancel): New macro.
	(sigsuspend_not_cancel): new macro.
	* sysdeps/unix/sysv/linux/sigsuspend.c [__ASSUME_REALTIME_SIGNALS]
	(do_sigsuspend): Define as inline.
	(__sigsuspend): Always use do_sigsuspend.
	[! NO_CANCELLATION] (__sigsuspend_nocancel): New function.
	* include/signal.h: Declare __sigsuspend_nocancel.
	* sysdeps/posix/pause.c
	[! NO_CANCELLATION] (__pause_nocancel): New function.

	* include/unistd.h (__pause_nocancel): Add attribute_hidden.
	* include/time.h (__nanosleep_nocancel): Likewise.
This commit is contained in:
Roland McGrath 2006-07-31 05:58:51 +00:00
parent b32e6700d0
commit b894c2ea7e
14 changed files with 109 additions and 116 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
ChangeLog
View File

@ -1,3 +1,24 @@
2006-07-30 Roland McGrath <roland@redhat.com>
* sysdeps/unix/sysv/linux/ia64/sigsuspend.c: File removed.
* sysdeps/unix/sysv/linux/x86_64/sigsuspend.c: File removed.
* sysdeps/unix/sysv/linux/s390/s390-64/sigsuspend.c: File removed.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigsuspend.c: File removed.
* sysdeps/unix/sysv/linux/not-cancel.h (pause_not_cancel): New macro.
(nanosleep_not_cancel): New macro.
(sigsuspend_not_cancel): new macro.
* sysdeps/unix/sysv/linux/sigsuspend.c [__ASSUME_REALTIME_SIGNALS]
(do_sigsuspend): Define as inline.
(__sigsuspend): Always use do_sigsuspend.
[! NO_CANCELLATION] (__sigsuspend_nocancel): New function.
* include/signal.h: Declare __sigsuspend_nocancel.
* sysdeps/posix/pause.c
[! NO_CANCELLATION] (__pause_nocancel): New function.
* include/unistd.h (__pause_nocancel): Add attribute_hidden.
* include/time.h (__nanosleep_nocancel): Likewise.
2006-07-30 Ulrich Drepper <drepper@redhat.com>
* locale/programs/localedef.c (add_to_readlist): Rename local

3
include/signal.h
View File

@ -26,6 +26,9 @@ extern int __sigprocmask (int __how,
__const sigset_t *__set, sigset_t *__oset);
extern int __sigsuspend (__const sigset_t *__set);
libc_hidden_proto (__sigsuspend)
#ifndef NO_CANCELLATION
extern int __sigsuspend_nocancel (__const sigset_t *__set) attribute_hidden;
#endif
extern int __sigwait (__const sigset_t *__set, int *__sig);
libc_hidden_proto (__sigwait)
extern int __sigwaitinfo (__const sigset_t *__set, siginfo_t *__info);

13
nptl/ChangeLog
View File

@ -1,3 +1,16 @@
2006-07-30 Roland McGrath <roland@redhat.com>
* Makefile (libpthread-routines): Add ptw-sigsuspend.
* sysdeps/unix/sysv/linux/i386/not-cancel.h
(pause_not_cancel): New macro.
(nanosleep_not_cancel): New macro.
(sigsuspend_not_cancel): New macro.
* pthread_mutex_timedlock.c (pthread_mutex_timedlock): Use
nanosleep_not_cancel macro from <not-cancel.h>.
* pthread_mutex_lock.c (__pthread_mutex_lock): Use pause_not_cancel
macro from <not-cancel.h>.
2006-07-28 Ulrich Drepper <drepper@redhat.com>
Jakub Jelinek <jakub@redhat.com>

2
nptl/Makefile
View File

@ -108,7 +108,7 @@ libpthread-routines = init vars events version \
ptw-msync ptw-nanosleep ptw-open ptw-open64 ptw-pause \
ptw-pread ptw-pread64 ptw-pwrite ptw-pwrite64 \
ptw-tcdrain ptw-wait ptw-waitpid ptw-msgrcv ptw-msgsnd \
ptw-sigwait \
ptw-sigwait ptw-sigsuspend \
pt-raise pt-system \
flockfile ftrylockfile funlockfile \
sigaction \

3
nptl/pthread_mutex_lock.c
View File

@ -21,6 +21,7 @@
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <not-cancel.h>
#include "pthreadP.h"
#include <lowlevellock.h>
@ -278,7 +279,7 @@ __pthread_mutex_lock (mutex)
/* Delay the thread indefinitely. */
while (1)
__pause_nocancel ();
pause_not_cancel ();
}
oldval = mutex->__data.__lock;

4
nptl/pthread_mutex_timedlock.c
View File

@ -19,8 +19,10 @@
#include <assert.h>
#include <errno.h>
#include <time.h>
#include "pthreadP.h"
#include <lowlevellock.h>
#include <not-cancel.h>
int
@ -281,7 +283,7 @@ pthread_mutex_timedlock (mutex, abstime)
--reltime.tv_sec;
}
if (reltime.tv_sec >= 0)
while (__nanosleep_nocancel (&reltime, &reltime) != 0)
while (nanosleep_not_cancel (&reltime, &reltime) != 0)
continue;
return ETIMEDOUT;

12
nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h
View File

@ -91,3 +91,15 @@ extern int __openat64_nocancel (int fd, const char *fname, int oflag,
# define waitpid_not_cancel(pid, stat_loc, options) \
INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
#endif
/* Uncancelable pause. */
#define pause_not_cancel() \
__pause_nocancel ()
/* Uncancelable nanosleep. */
#define nanosleep_not_cancel(requested_time, remaining) \
__nanosleep_nocancel (requested_time, remaining)
/* Uncancelable sigsuspend. */
#define sigsuspend_not_cancel(set) \
__sigsuspend_nocancel (set)

18
sysdeps/posix/pause.c
View File

@ -1,5 +1,5 @@
/* pause -- suspend the process until a signal arrives. POSIX.1 version.
Copyright (C) 2003 Free Software Foundation, Inc.
Copyright (C) 2003, 2006 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
@ -23,6 +23,7 @@
/* Suspend the process until a signal arrives.
This always returns -1 and sets errno to EINTR. */
int
__libc_pause (void)
{
@ -39,3 +40,18 @@ __libc_pause (void)
weak_alias (__libc_pause, pause)
LIBC_CANCEL_HANDLED (); /* sigsuspend handles our cancellation. */
#ifndef NO_CANCELLATION
# include <not-cancel.h>
int
__pause_nocancel (void)
{
sigset_t set;
__sigemptyset (&set);
__sigprocmask (SIG_BLOCK, NULL, &set);
return sigsuspend_not_cancel (&set);
}
#endif

49
sysdeps/unix/sysv/linux/ia64/sigsuspend.c
View File

@ -1,49 +0,0 @@
/* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003
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. */
#include <errno.h>
#include <signal.h>
#include <unistd.h>
#include <sysdep-cancel.h>
#include <sys/syscall.h>
#include <bp-checks.h>
/* Change the set of blocked signals to SET,
wait until a signal arrives, and restore the set of blocked signals. */
int
__sigsuspend (set)
const sigset_t *set;
{
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */
if (SINGLE_THREAD_P)
return INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set), _NSIG / 8);
int oldtype = LIBC_CANCEL_ASYNC ();
int result = INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set), _NSIG / 8);
LIBC_CANCEL_RESET (oldtype);
return result;
}
libc_hidden_def (__sigsuspend)
weak_alias (__sigsuspend, sigsuspend)
strong_alias (__sigsuspend, __libc_sigsuspend)

22
sysdeps/unix/sysv/linux/not-cancel.h
View File

@ -81,3 +81,25 @@ extern int __openat64_nocancel (int fd, const char *fname, int oflag,
# define waitpid_not_cancel(pid, stat_loc, options) \
INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
#endif
/* Uncancelable pause. */
#ifdef __NR_pause
# define pause_not_cancel() \
INLINE_SYSCALL (pause, 0)
#else
# define pause_not_cancel() \
__pause_nocancel ()
#endif
/* Uncancelable nanosleep. */
#ifdef __NR_nanosleep
# define nanosleep_not_cancel(requested_time, remaining) \
INLINE_SYSCALL (nanosleep, 2, requested_time, remaining)
#else
# define nanosleep_not_cancel(requested_time, remaining) \
__nanosleep_nocancel (requested_time, remaining)
#endif
/* Uncancelable sigsuspend. */
#define sigsuspend_not_cancel(set) \
__sigsuspend_nocancel (set)

47
sysdeps/unix/sysv/linux/s390/s390-64/sigsuspend.c
View File

@ -1,47 +0,0 @@
/* Copyright (C) 2001, 2002, 2003 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. */
#include <errno.h>
#include <signal.h>
#include <unistd.h>
#include <sysdep-cancel.h>
#include <sys/syscall.h>
/* Change the set of blocked signals to SET,
wait until a signal arrives, and restore the set of blocked signals. */
int
__sigsuspend (set)
const sigset_t *set;
{
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */
if (SINGLE_THREAD_P)
return INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8);
int oldtype = LIBC_CANCEL_ASYNC ();
int result = INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8);
LIBC_CANCEL_RESET (oldtype);
return result;
}
libc_hidden_def (__sigsuspend)
weak_alias (__sigsuspend, sigsuspend)
strong_alias (__sigsuspend, __libc_sigsuspend)

29
sysdeps/unix/sysv/linux/sigsuspend.c
View File

@ -56,6 +56,12 @@ do_sigsuspend (const sigset_t *set)
return INLINE_SYSCALL (sigsuspend, 3, 0, 0, set->__val[0]);
}
#else
static inline int __attribute__ ((always_inline))
do_sigsuspend (const sigset_t *set)
{
return INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set), _NSIG / 8);
}
#endif
/* Change the set of blocked signals to SET,
@ -64,19 +70,6 @@ int
__sigsuspend (set)
const sigset_t *set;
{
#if __ASSUME_REALTIME_SIGNALS
if (SINGLE_THREAD_P)
return INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set), _NSIG / 8);
int oldtype = LIBC_CANCEL_ASYNC ();
int result = INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set),
_NSIG / 8);
LIBC_CANCEL_RESET (oldtype);
return result;
#else
if (SINGLE_THREAD_P)
return do_sigsuspend (set);
@ -87,8 +80,16 @@ __sigsuspend (set)
LIBC_CANCEL_RESET (oldtype);
return result;
#endif
}
libc_hidden_def (__sigsuspend)
weak_alias (__sigsuspend, sigsuspend)
strong_alias (__sigsuspend, __libc_sigsuspend)
#ifndef NO_CANCELLATION
int
__sigsuspend_nocancel (set)
const sigset_t *set;
{
return do_sigsuspend (set);
}
#endif

1
sysdeps/unix/sysv/linux/sparc/sparc64/sigsuspend.c
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@ -1 +0,0 @@
#include "../../ia64/sigsuspend.c"

1
sysdeps/unix/sysv/linux/x86_64/sigsuspend.c
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@ -1 +0,0 @@
#include <sysdeps/unix/sysv/linux/ia64/sigsuspend.c>