From: Josiah Worcester <josiahw@gmail.com>
To: musl@lists.openwall.com
Subject: Re: syscall_cp
Date: Fri, 29 Jan 2016 22:50:47 +0000 [thread overview]
Message-ID: <CAMAJcuD71qZ=_qMTdsX+ANzSi6b4vYp5J3Qr+eTE7o=Yb1Pu5w@mail.gmail.com> (raw)
In-Reply-To: <CAD+Cw=cBoBMnVPBYbr1upQDMjgb8_13DmKQhoujnugK85G9gWg@mail.gmail.com>
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syscall_cp does largely the same thing as syscall. However, it also checks
for a current cancellation request, and exports some symbols (before and
after the syscall call) which are used in the thread cancellation
implementation. It makes it so the cancellation handler can know whether or
not the cancellation request happened during or after a syscall. (if
during, it needs to cancel the thread, if after, then it needs to continue
executing until the next cancellation point.)
On Fri, Jan 29, 2016 at 2:41 PM Max Ruttenberg <
mruttenberg@emutechnology.com> wrote:
> What is syscall_cp and what is it supposed to do that syscall isn't?
>
>
> --
> Max Ruttenberg,
> Member of the Technical Staff
> Emu *Technology*
> 1400 E Angela Blvd, Unit 101
> South Bend, IN 46617
>
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next prev parent reply other threads:[~2016-01-29 22:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-29 22:40 syscall_cp Max Ruttenberg
2016-01-29 22:45 ` syscall_cp Nathan McSween
2016-01-29 22:50 ` Josiah Worcester [this message]
2016-01-29 23:03 ` syscall_cp Max Ruttenberg
2016-01-29 23:16 ` syscall_cp Rich Felker
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