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Message-ID: <20200215124617.GB14278@port70.net>
Date: Sat, 15 Feb 2020 13:46:17 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: zuotina <zuotingyang@....com>
Cc: musl@...ts.openwall.com
Subject: Re: [timer] timer_delete function async problem
* zuotina <zuotingyang@....com> [2020-02-15 18:54:23 +0800]:
> Problem:
> When I created SIGEV_THREAD timer, then start it by timer_settime. like this
> the notify callback in the helper thread 'start' will be run when timer expiration.
> But when I delete the timer, the notify callback will be run all the same.
> This is not what i want. In actual use, I encountered a problem.
write an example program that shows the problem
>
>
> I found that the 'timer_delete' function returns immediately after called.
> The timer may not perform the delete action.
>
>
> In addition, the SIGEV_SIGNAL timer can be deleted after called the function.
> So i think the function has different semantics for different types.
>
>
> Is there a way to implement synchronously ?
>
>
> Looking forward to your reply.
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