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linux: Add time64 support for nanosleep

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It uses __clock_nanosleep64 and adds the __nanosleep64 symbol.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Adhemerval Zanella 2020-07-12 14:55:30 -03:00
parent 4af88f96de
commit c3a020eedd
2 changed files with 59 additions and 0 deletions
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9
include/time.h
View File

@ -271,6 +271,15 @@ extern struct tm *__tz_convert (__time64_t timer, int use_localtime,
extern int __nanosleep (const struct timespec *__requested_time,
struct timespec *__remaining);
hidden_proto (__nanosleep)
#if __TIMESIZE == 64
# define __nanosleep64 __nanosleep
#else
extern int __nanosleep64 (const struct __timespec64 *__requested_time,
struct __timespec64 *__remaining);
hidden_proto (__nanosleep64)
#endif
extern int __getdate_r (const char *__string, struct tm *__resbufp)
attribute_hidden;

50
sysdeps/unix/sysv/linux/nanosleep.c Normal file
View File

@ -0,0 +1,50 @@
/* High-resolution sleep.
Copyright (C) 2020 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
<https://www.gnu.org/licenses/>. */
#include <time.h>
#include <errno.h>
int
__nanosleep64 (const struct __timespec64 *req, struct __timespec64 *rem)
{
int ret = __clock_nanosleep_time64 (CLOCK_REALTIME, 0, req, rem);
if (ret != 0)
{
__set_errno (ret);
return -1;
}
return 0;
}
#if __TIMESIZE != 64
libc_hidden_def (__nanosleep64)
int
__nanosleep (const struct timespec *req, struct timespec *rem)
{
struct __timespec64 treq64, trem64;
treq64 = valid_timespec_to_timespec64 (*req);
int ret = __nanosleep64 (&treq64, &trem64);
if (ret != 0 && errno == EINTR && rem != NULL)
*rem = valid_timespec64_to_timespec (trem64);
return ret;
}
#endif
libc_hidden_def (__nanosleep)
weak_alias (__nanosleep, nanosleep)