mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
08d6eb46ca
This patch consolidates all the non cancellable pause calls to use the __pause_nocancel identifier. For non cancellable targets it will be just a macro to call the default respective symbol while on Linux will be a internal one. Checked on x86_64-linux-gnu, x86_64-linux-gnu-x32, and i686-linux-gnu. * nptl/pthread_mutex_lock.c (__pthread_mutex_lock_full): Replace pause_not_cancel with __pause_nocancel. * sysdeps/generic/not-cancel.h (pause_not_cancel): Remove macro. (__pause_nocancel): New macro. * sysdeps/unix/sysv/linux/not-cancel.h (pause_not_cancel): Remove macro. (__pause_nocancel): New prototype. * sysdeps/unix/sysv/linux/pause.c (__pause_nocancel): New function.
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Linux pause syscall implementation.
|
|
Copyright (C) 2017 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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include <sysdep-cancel.h>
|
|
#include <not-cancel.h>
|
|
|
|
/* Suspend the process until a signal arrives.
|
|
This always returns -1 and sets errno to EINTR. */
|
|
int
|
|
__libc_pause (void)
|
|
{
|
|
#ifdef __NR_pause
|
|
return SYSCALL_CANCEL (pause);
|
|
#else
|
|
return SYSCALL_CANCEL (ppoll, NULL, 0, NULL, NULL);
|
|
#endif
|
|
}
|
|
weak_alias (__libc_pause, pause)
|
|
|
|
int
|
|
__pause_nocancel (void)
|
|
{
|
|
#ifdef __NR_pause
|
|
return INLINE_SYSCALL_CALL (pause);
|
|
#else
|
|
return INLINE_SYSCALL_CALL (ppoll, NULL, 0, NULL, NULL);
|
|
#endif
|
|
}
|
|
libc_hidden_def (__pause_nocancel)
|