mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
b5eede9730
This patch consolidates the poll Linux syscall implementation on sysdeps/unix/sysv/linux/poll.c. It basically removes poll from auto-generation list and add a default implementation that either call __NR_poll directly (if the kernel headers defines it) or ppoll adjusting the timeout argument (as the generic implementation). Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu. * sysdeps/unix/sysv/linux/generic/poll.c: Remove file. * sysdeps/unix/sysv/linux/poll.c: New file. * sysdeps/unix/sysv/linux/syscalls.list: Remove poll from auto-generation list.
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Linux poll 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 <errno.h>
|
|
#include <sys/poll.h>
|
|
|
|
#include <sysdep-cancel.h>
|
|
#include <sys/syscall.h>
|
|
|
|
int
|
|
__poll (struct pollfd *fds, nfds_t nfds, int timeout)
|
|
{
|
|
#ifdef __NR_poll
|
|
return SYSCALL_CANCEL (poll, fds, nfds, timeout);
|
|
#else
|
|
struct timespec timeout_ts;
|
|
struct timespec *timeout_ts_p = NULL;
|
|
|
|
if (timeout >= 0)
|
|
{
|
|
timeout_ts.tv_sec = timeout / 1000;
|
|
timeout_ts.tv_nsec = (timeout % 1000) * 1000000;
|
|
timeout_ts_p = &timeout_ts;
|
|
}
|
|
|
|
return SYSCALL_CANCEL (ppoll, fds, nfds, timeout_ts_p, NULL, 0);
|
|
#endif
|
|
}
|
|
libc_hidden_def (__poll)
|
|
weak_alias (__poll, poll)
|
|
strong_alias (__poll, __libc_poll)
|