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author | Lukasz Majewski <lukma@denx.de> | 2020-10-29 14:19:25 +0100 |
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committer | Lukasz Majewski <lukma@denx.de> | 2020-11-14 22:09:43 +0100 |
commit | 1f1a4847a404e26b5f729dc14a92aa94c87a6063 (patch) | |
tree | 9616ced3bc636e3f34a5dac8f6a2a8058ee400bd /sysdeps/unix/sysv | |
parent | 839fa6bc8ab469a1e7dd6be4cf95322aa518fcbc (diff) | |
download | glibc-1f1a4847a404e26b5f729dc14a92aa94c87a6063.tar.gz glibc-1f1a4847a404e26b5f729dc14a92aa94c87a6063.tar.xz glibc-1f1a4847a404e26b5f729dc14a92aa94c87a6063.zip |
y2038: Convert cnd_timedwait to support 64 bit time
The cnd_timedwait 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 pthread_cond_timedwait() supporting 64 bit time. Moreover, a linux specific copy of thrd_priv.h header file has been added as well. The cnd_timedwait is a wrapper on POSIX threads to provide C11 standard threads interface. It directly calls __pthread_cond_timedwait64(). Build tests: ./src/scripts/build-many-glibcs.py glibcs Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'sysdeps/unix/sysv')
-rw-r--r-- | sysdeps/unix/sysv/linux/cnd_timedwait.c | 44 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/thrd_priv.h | 27 |
2 files changed, 71 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/cnd_timedwait.c b/sysdeps/unix/sysv/linux/cnd_timedwait.c new file mode 100644 index 0000000000..90c54aaacb --- /dev/null +++ b/sysdeps/unix/sysv/linux/cnd_timedwait.c @@ -0,0 +1,44 @@ +/* C11 threads conditional timed wait 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/>. */ + +#include <time.h> +#include "thrd_priv.h" + +int +__cnd_timedwait64 (cnd_t *restrict cond, mtx_t *restrict mutex, + const struct __timespec64 *restrict time_point) +{ + int err_code = __pthread_cond_timedwait64 ((pthread_cond_t *) cond, + (pthread_mutex_t *) mutex, + time_point); + return thrd_err_map (err_code); +} + +#if __TIMESIZE != 64 +libpthread_hidden_def (__cnd_timedwait64) + +int +__cnd_timedwait (cnd_t *restrict cond, mtx_t *restrict mutex, + const struct timespec *restrict time_point) +{ + struct __timespec64 ts64 = valid_timespec_to_timespec64 (*time_point); + + return __cnd_timedwait64(cond, mutex, &ts64); +} +#endif +weak_alias (__cnd_timedwait, cnd_timedwait) diff --git a/sysdeps/unix/sysv/linux/thrd_priv.h b/sysdeps/unix/sysv/linux/thrd_priv.h new file mode 100644 index 0000000000..fb12ac1615 --- /dev/null +++ b/sysdeps/unix/sysv/linux/thrd_priv.h @@ -0,0 +1,27 @@ +/* Internal C11 threads definitions - linux version + 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 <sysdeps/pthread/thrd_priv.h> + +#if __TIMESIZE == 64 +# define __cnd_timedwait64 __cnd_timedwait +#else +extern int __cnd_timedwait64 (cnd_t *restrict cond, mtx_t *restrict mutex, + const struct __timespec64 *restrict time_point); +libpthread_hidden_proto (__cnd_timedwait64) +#endif |