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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-02-17 13:35:19 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-06-15 10:42:11 -0300 |
commit | 47f24c21ee38701ae275aa9e451f70fa3e77478c (patch) | |
tree | b4cc52206173fb2ed427a1e797769d12369a89ad /sysdeps/pthread/threads.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 'sysdeps/pthread/threads.h')
-rw-r--r-- | sysdeps/pthread/threads.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sysdeps/pthread/threads.h b/sysdeps/pthread/threads.h index 46929a025e..bf251c9db4 100644 --- a/sysdeps/pthread/threads.h +++ b/sysdeps/pthread/threads.h @@ -88,8 +88,18 @@ extern thrd_t thrd_current (void); __TIME_POINT. The current thread may resume if receives a signal. In that case, if __REMAINING is not NULL, the remaining time is stored in the object pointed by it. */ +#ifndef __USE_TIME_BITS64 extern int thrd_sleep (const struct timespec *__time_point, struct timespec *__remaining); +#else +# ifdef __REDIRECT +extern int __REDIRECT (thrd_sleep, (const struct timespec *__time_point, + struct timespec *__remaining), + __thrd_sleep64); +# else +# define thrd_sleep __thrd_sleep64 +# endif +#endif /* Terminate current thread execution, cleaning up any thread local storage and freeing resources. Returns the value specified in __RES. */ @@ -131,8 +141,19 @@ extern int mtx_lock (mtx_t *__mutex); /* Block the current thread until the mutex pointed by __MUTEX is unlocked or time pointed by __TIME_POINT is reached. In case the mutex is unlock, the current thread will not be blocked. */ +#ifndef __USE_TIME_BITS64 extern int mtx_timedlock (mtx_t *__restrict __mutex, const struct timespec *__restrict __time_point); +#else +# ifdef __REDIRECT +extern int __REDIRECT (mtx_timedlock, (mtx_t *__restrict __mutex, + const struct timespec *__restrict + __time_point), + __mtx_timedlock64); +# else +# define mtx_timedlock __mtx_timedlock64 +# endif +#endif /* Try to lock the mutex pointed by __MUTEX without blocking. If the mutex is free the current threads takes control of it, otherwise it returns @@ -171,9 +192,21 @@ extern int cnd_wait (cnd_t *__cond, mtx_t *__mutex); /* Block current thread on the condition variable until condition variable pointed by __COND is signaled or time pointed by __TIME_POINT is reached. */ +#ifndef __USE_TIME_BITS64 extern int cnd_timedwait (cnd_t *__restrict __cond, mtx_t *__restrict __mutex, const struct timespec *__restrict __time_point); +#else +# ifdef __REDIRECT +extern int __REDIRECT (cnd_timedwait, (cnd_t *__restrict __cond, + mtx_t *__restrict __mutex, + const struct timespec *__restrict + __time_point), + __cnd_timedwait64); +# else +# define cnd_timedwait __cnd_timedwait64 +# endif +#endif /* Destroy condition variable pointed by __cond and free all of its resources. */ |