Bug#779481: marked as done (ITP: libthread-tie-perl -- alternative separate thread implementation of shared variables)
Your message dated Tue, 03 Mar 2015 16:00:13 +0000
with message-id <E1YSpEz-0002QP-0Q@franck.debian.org>
and subject line Bug#779481: fixed in libthread-tie-perl 0.13-1
has caused the Debian Bug report #779481,
regarding ITP: libthread-tie-perl -- alternative separate thread implementation of shared variables
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
779481: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=779481
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
Package: wnpp
Owner: Christopher Hoskin <christopher.hoskin@gmail.com>
Severity: wishlist
X-Debbugs-CC: debian-devel@lists.debian.org,debian-perl@lists.debian.org
* Package name : libthread-tie-perl
Version : 0.13
Upstream Author : Elizabeth Mattijsen <liz@dijkmat.nl>
* URL : https://metacpan.org/release/Thread-Tie
* License : Artistic or GPL-1+
Programming Lang: Perl
Description : alternative separate thread implementation of shared variables
The standard shared variable scheme used by Perl, is based on tie-ing the
variable to some very special dark magic. This dark magic ensures that shared
variables, which are copied just as any other variable when a thread is
started, update values in all of the threads where they exist as soon as the
value of a shared variable is changed.
The Thread::Tie module is a proof-of-concept implementation of another approach
to shared variables. Instead of having shared variables exist in all the
threads from which they are accessible, shared variable exist as "normal",
unshared variables in a seperate thread. Only a tied object exists in each
thread from which the shared variable is accesible.
Through the use of a client-server model, any thread can fetch and/or update
variables living in that thread. This client-server functionality is hidden
under the hood of tie(). So you could say that one dark magic (the current
shared variables implementation) is replaced by another dark magic.
The Thread::Tie approach has the following advantages:
* Memory usage - This implementation circumvents the memory leak that currently
(threads::shared version 0.90) plagues any shared array or shared hash
access.
* Tieing shared variables - Because the current implementation uses tie-ing,
you can not tie a shared variable. The same applies for this implementation
you might say. However, it is possible to specify a non-standard tie
implementation for use within the thread. So with this implementation you can
tie() a shared variable. So you could tie a shared hash to a DBM file à la
dbmopen() with this module.
Of course there are disadvantages to this approach:
* Pure Perl implementation - This module is currently a pure Perl
implementation. This is ok for a proof of concept, but may need re-
implementation in pure XS or in Inline::C for production use.
* Tradeoff between cpu and memory - This implementation currently uses (much)
more cpu than the standard shared variables implementation. Whether this
would still be true when re-implemented in XS or Inline::C, remains to be seen.
--- End Message ---
--- Begin Message ---
Source: libthread-tie-perl
Source-Version: 0.13-1
We believe that the bug you reported is fixed in the latest version of
libthread-tie-perl, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 779481@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Christopher Hoskin <christopher.hoskin@gmail.com> (supplier of updated libthread-tie-perl package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Sun, 01 Mar 2015 22:51:08 +0000
Source: libthread-tie-perl
Binary: libthread-tie-perl
Architecture: source all
Version: 0.13-1
Distribution: unstable
Urgency: low
Maintainer: Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>
Changed-By: Christopher Hoskin <christopher.hoskin@gmail.com>
Description:
libthread-tie-perl - alternative separate thread implementation of shared variables
Closes: 779481
Changes:
libthread-tie-perl (0.13-1) unstable; urgency=low
.
* Initial Release. Closes: #779481
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