From: Carlos O'Donell via Libc-alpha <libc-alpha@sourceware.org>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
libc-alpha@sourceware.org
Subject: Re: [PATCH] NEWS: Deprecate weak libpthread symbols for single-threaded checks
Date: Fri, 24 Jul 2020 16:40:00 -0400 [thread overview]
Message-ID: <ea2988fd-08c8-15fd-a084-bca090364417@redhat.com> (raw)
In-Reply-To: <b8f5a29c-42af-cfc4-725c-6d2b8df89dc1@linaro.org>
On 7/24/20 12:36 PM, Adhemerval Zanella via Libc-alpha wrote:
>
>
> On 24/07/2020 11:50, Florian Weimer via Libc-alpha wrote:
>> Recommend the new __libc_single_thread variable instead.
>>
>> ---
>> NEWS | 8 ++++++++
>> 1 file changed, 8 insertions(+)
>>
>> diff --git a/NEWS b/NEWS
>> index 83aed60e19..7fb167e650 100644
>> --- a/NEWS
>> +++ b/NEWS
>> @@ -134,6 +134,14 @@ Deprecated and removed features, and other changes affecting compatibility:
>> or contents might be overwritten on subsequent calls in the same thread or
>> if the thread is terminated. It makes strerror MT-safe.
>>
>> +* Using weak references to libpthread functions such as pthread_create
>> + or pthread_key_create to detect the singled-threaded nature of a
>> + program is an obsolescent feature. Future versions of glibc will
>> + define pthread_create within libc.so.6 itself, so such checks will
>> + always flag the program as multi-threaded. Applications should check
>> + the __libc_single_threaded variable declared in
>> + <sys/single_threaded.h> instead.
>> +
>> * The "files" NSS module no longer supports the "key" database (used for
>> secure RPC). The contents of the /etc/publickey file will be ignored,
>> regardless of the settings in /etc/nsswitch.conf. (This method of
>>
>
> Should we add it on the 'Major features' instead along with the single-threaded
> entry?
No, it's good to call it out in the deprecated features. People might only
be looking at one or the other so we should have an entry in both.
--
Cheers,
Carlos.
next prev parent reply other threads:[~2020-07-24 20:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 14:50 [PATCH] NEWS: Deprecate weak libpthread symbols for single-threaded checks Florian Weimer via Libc-alpha
2020-07-24 16:36 ` Adhemerval Zanella via Libc-alpha
2020-07-24 20:40 ` Carlos O'Donell via Libc-alpha [this message]
2020-07-24 20:40 ` Carlos O'Donell via Libc-alpha
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/libc/involved.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ea2988fd-08c8-15fd-a084-bca090364417@redhat.com \
--to=libc-alpha@sourceware.org \
--cc=adhemerval.zanella@linaro.org \
--cc=carlos@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).