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y2038: Convert thrd_sleep to support 64 bit time
The thrd_sleep function has been converted to support 64 bit time. It was also necessary to provide Linux specific copy of it to avoid problems on i686-gnu (i.e. HURD) port, which is not providing clock_nanosleep() supporting 64 bit time. The thrd_sleep is a wrapper on POSIX threads to provide C11 standard threads interface. It directly calls __clock_nanosleep64(). Build tests: ./src/scripts/build-many-glibcs.py glibcs
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Lukasz Majewski
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Nov 3, 2020
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/* C11 threads thread sleep implementation - Linux variant. | ||
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/>. */ | ||
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#include <time.h> | ||
#include <sysdep-cancel.h> | ||
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#include "thrd_priv.h" | ||
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int | ||
__thrd_sleep64 (const struct __timespec64* time_point, | ||
struct __timespec64* remaining) | ||
{ | ||
int ret = __clock_nanosleep_time64 (CLOCK_REALTIME, 0, time_point, remaining); | ||
/* C11 states thrd_sleep function returns -1 if it has been interrupted | ||
by a signal, or a negative value if it fails. */ | ||
switch (ret) | ||
{ | ||
case 0: return 0; | ||
case EINTR: return -1; | ||
default: return -2; | ||
} | ||
} | ||
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#if __TIMESIZE != 64 | ||
libpthread_hidden_def (__thrd_sleep64) | ||
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int | ||
__thrd_sleep (const struct timespec* time_point, struct timespec* remaining) | ||
{ | ||
const struct __timespec64 treq64 = valid_timespec_to_timespec64 (*time_point); | ||
struct __timespec64 trem64; | ||
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int ret = __thrd_sleep64 (&treq64, &trem64); | ||
if (ret == -1 && remaining != NULL) | ||
*remaining = valid_timespec64_to_timespec (trem64); | ||
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return ret; | ||
} | ||
#endif | ||
weak_alias (__thrd_sleep, thrd_sleep) |