* sem_timedwait: The semaphore times out when the clock_REALTIME is used.
@ 2021-04-06 13:09 y00575850
2021-04-08 14:10 ` Szabolcs Nagy
0 siblings, 1 reply; 2+ messages in thread
From: y00575850 @ 2021-04-06 13:09 UTC (permalink / raw)
To: libc-stable; +Cc: wuxu.wu, carlos
Dear Carlos,
When I use sem_timedwait, a time jump will cause the semaphore to time out.
While I know that using CLOCK_REALTIME is POSIX-defined behavior, it doesn't
fit the actual meaning of this function.To solve this problem, modify the
sem_timedwait process, for example: add a switch control.
Or add an interface that uses the Clock_MONOTONIC interface.
Best regards,
Yanchao
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: sem_timedwait: The semaphore times out when the clock_REALTIME is used.
2021-04-06 13:09 sem_timedwait: The semaphore times out when the clock_REALTIME is used y00575850
@ 2021-04-08 14:10 ` Szabolcs Nagy
0 siblings, 0 replies; 2+ messages in thread
From: Szabolcs Nagy @ 2021-04-08 14:10 UTC (permalink / raw)
To: y00575850; +Cc: libc-stable, carlos, wuxu.wu
The 04/06/2021 21:09, y00575850 via Libc-stable wrote:
> Dear Carlos,
> When I use sem_timedwait, a time jump will cause the semaphore to time out.
> While I know that using CLOCK_REALTIME is POSIX-defined behavior, it doesn't
> fit the actual meaning of this function.To solve this problem, modify the
> sem_timedwait process, for example: add a switch control.
> Or add an interface that uses the Clock_MONOTONIC interface.
this is the wrong list.
you don't seem to understand the interface contract of sem_timedwait,
it cannot change the used clock.
glibc has non-standard apis to wait with different clock
https://www.gnu.org/software/libc/manual/html_node/Waiting-with-Explicit-Clocks.html
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-04-06 13:09 sem_timedwait: The semaphore times out when the clock_REALTIME is used y00575850
2021-04-08 14:10 ` Szabolcs Nagy
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