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Date: Mon, 30 Mar 2009 14:33:56 -0400
Message-ID: <cc67648e0903301133w618fbcc2g7e234cf0c358b9a5@mail.gmail.com>
Subject: Re: Posix sems still not recommended?
From: Jeff Trawick <trawick@gmail.com>
To: "dev@apr.apache.org List" <dev@apr.apache.org>
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On Mon, Mar 30, 2009 at 2:07 PM, Jim Jagielski <jim@jagunet.com> wrote:

> Anyone know if:
>
>  # POSIX semaphores and cross-process pthread mutexes are not
>  # used by default since they have less desirable behaviour when
>  # e.g. a process holding the mutex segfaults.
>
> is still applicable, at least for posix sems?


AFAIK, the Solaris-specific recovery logic for cross-process pthread mutexes
has been working reliably for a long time, but with the current wind
direction APR is choosing fcntl(), which has sysdef implementations on that
platform.

no clues here about the POSIX semaphores

-- 
Born in Roswell... married an alien...

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<br><br><div class=3D"gmail_quote">On Mon, Mar 30, 2009 at 2:07 PM, Jim Jag=
ielski <span dir=3D"ltr">&lt;<a href=3D"mailto:jim@jagunet.com">jim@jagunet=
.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"bo=
rder-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding=
-left: 1ex;">
Anyone know if:<br>
<br>
 =A0# POSIX semaphores and cross-process pthread mutexes are not<br>
 =A0# used by default since they have less desirable behaviour when<br>
 =A0# e.g. a process holding the mutex segfaults.<br>
<br>
is still applicable, at least for posix sems?</blockquote><div><br>AFAIK, t=
he Solaris-specific recovery logic for cross-process pthread mutexes has be=
en working reliably for a long time, but with the current wind direction AP=
R is choosing fcntl(), which has sysdef implementations on that platform.<b=
r>
</div></div><br>no clues here about the POSIX semaphores<br><br>-- <br>Born=
 in Roswell... married an alien...<br>

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