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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-02-17 13:35:19 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-06-15 10:42:11 -0300 |
| commit | 47f24c21ee38701ae275aa9e451f70fa3e77478c (patch) | |
| tree | b4cc52206173fb2ed427a1e797769d12369a89ad /posix/sched.h | |
| parent | 8af344feb5ae3e6e3374a6cf2175b44cc904a94e (diff) | |
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y2038: Add support for 64-bit time on legacy ABIs
A new build flag, _TIME_BITS, enables the usage of the newer 64-bit
time symbols for legacy ABI (where 32-bit time_t is default). The 64
bit time support is only enabled if LFS (_FILE_OFFSET_BITS=64) is
also used.
Different than LFS support, the y2038 symbols are added only for the
required ABIs (armhf, csky, hppa, i386, m68k, microblaze, mips32,
mips64-n32, nios2, powerpc32, sparc32, s390-32, and sh). The ABIs with
64-bit time support are unchanged, both for symbol and types
redirection.
On Linux the full 64-bit time support requires a minimum of kernel
version v5.1. Otherwise, the 32-bit fallbacks are used and might
results in error with overflow return code (EOVERFLOW).
The i686-gnu does not yet support 64-bit time.
This patch exports following rediretions to support 64-bit time:
* libc:
adjtime
adjtimex
clock_adjtime
clock_getres
clock_gettime
clock_nanosleep
clock_settime
cnd_timedwait
ctime
ctime_r
difftime
fstat
fstatat
futimens
futimes
futimesat
getitimer
getrusage
gettimeofday
gmtime
gmtime_r
localtime
localtime_r
lstat_time
lutimes
mktime
msgctl
mtx_timedlock
nanosleep
nanosleep
ntp_gettime
ntp_gettimex
ppoll
pselec
pselect
pthread_clockjoin_np
pthread_cond_clockwait
pthread_cond_timedwait
pthread_mutex_clocklock
pthread_mutex_timedlock
pthread_rwlock_clockrdlock
pthread_rwlock_clockwrlock
pthread_rwlock_timedrdlock
pthread_rwlock_timedwrlock
pthread_timedjoin_np
recvmmsg
sched_rr_get_interval
select
sem_clockwait
semctl
semtimedop
sem_timedwait
setitimer
settimeofday
shmctl
sigtimedwait
stat
thrd_sleep
time
timegm
timerfd_gettime
timerfd_settime
timespec_get
utime
utimensat
utimes
utimes
wait3
wait4
* librt:
aio_suspend
mq_timedreceive
mq_timedsend
timer_gettime
timer_settime
* libanl:
gai_suspend
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'posix/sched.h')
| -rw-r--r-- | posix/sched.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/posix/sched.h b/posix/sched.h index d8ce08a3ea..7dd97a49b2 100644 --- a/posix/sched.h +++ b/posix/sched.h @@ -74,8 +74,17 @@ extern int sched_get_priority_max (int __algorithm) __THROW; extern int sched_get_priority_min (int __algorithm) __THROW; /* Get the SCHED_RR interval for the named process. */ +#ifndef __USE_TIME_BITS64 extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW; - +#else +# ifdef __REDIRECT_NTH +extern int __REDIRECT_NTH (sched_rr_get_interval, + (__pid_t __pid, struct timespec *__t), + __sched_rr_get_interval64); +# else +# define sched_rr_get_interval __sched_rr_get_interval64 +# endif +#endif #ifdef __USE_GNU /* Access macros for `cpu_set'. */ |