Skip to main content



my $MAX_PROCESSES=10; my $pm = Parallel::ForkManager->new($MAX_PROCESSES); while (1) { my $pid=$pm->start and next; print "$$ LOCK \n"; $pm->finish; } $pm->wait_all_children; 

I made this sample piece of code which I basically took from the docs, I only changed to infinite loop but I cannot understand why this would make any different between an infinite loop and iterating through an array for example? Anyway I am fighting this for several hours now trying different versions of my code and cannot find why am I getting "Cannot start another process while you are in the child process" all the time, any hints appreciated

output looks basically like this

Cannot start another process while you are in the child process at .... 16366 LOCK 16367 LOCK 16368 LOCK 16369 LOCK 16370 LOCK 16371 LOCK 16372 LOCK 16373 LOCK 16374 LOCK 16375 LOCK Cannot start another process while you are in the child process at .... 

submitted by /u/Weak_Word221
[link] [comments]



Find or build xz

Changes for 0.09 - 2024-04-15T11:21:20Z

  • use GitHub plugin to fetch tarball (gh#8, gh#10)


Build or find autoconf

Changes for 0.20 - 2024-04-15T08:16:02Z

  • Fixes for 2.72 (gh#17, gh#18)


113-bit integer arithmetic

Changes for 0.05

  • Add README file.
  • Fix bug in t/bitwise_gmp_cross_checks.t


Simple opinionated tool to set up a Perl distribution directory.

Changes for 0.14 - 2024-04-15

  • Allow to specify the type of runners to use for the GitHub CI actions.
  • Make the dependency on CPAN::Common::Index::Mux::Ordered be optional.


parses .pm file as PAUSE does

Changes for 0.46 - 2024-04-15

  • Strip BOM before finding a package



A base for sort-like CLI utilities

Changes for 0.003 - 2024-03-06

  • [incompatible change] Replace _sortgen with _gen_sorter + _gen_comparer + _gen_sortkey.


Sort lines of text by spec

Changes for 0.004 - 2024-03-06

  • Update to AppBase::Sort 0.003.
  • [doc] Fix example.


Collection of CLI utilities for Sah and Data::Sah

Changes for 0.484 - 2024-03-06

  • Rename scripts: list-sah-schemas-modules -> list-sah-schemabundle-modules, list-sah-pschemas-modules -> list-sah-pschemabundle-modules.
  • Tweak examaple summary.


Audit CPAN distributions for known vulnerabilities

Changes for 20240414.001 - 2024-04-15T00:01:30Z

  • data update for 2024-04-14


A complete SPARQL 1.1 Query and Update implementation for use with RDF::Trine.


The Joy of DTrace and ModPerl2 submitted by /u/joesuf4
[link] [comments]


Prior releases of the 6.x line relied on Lexical::Types, which was a major performance pessimisation over the 5.x releases.

6.0.4 relies on a simple source filter instead, which restores performance levels back to expected levels.

More benchmarks added to the test suite validate the dependency changes.

submitted by /u/joesuf4
[link] [comments]



Tags helpers for HTML elements.

Changes for 0.11 - 2024-04-14T18:16:11+02:00

  • Fix test for 'step' parameter on Windows.


Get stock and mutual fund quotes from various exchanges

Changes for 1.59_01 - 2024-04-14T08:31:58-07:00

  • YahooJSON.pm - Added code to retrieve cookies and a "crumb" required to continue to utilize the v11 API. Issue #369. The YahooJSON.pm currency module was changed to use the v8 API.
  • Added initial version of CONTRIBUTING.pod that metacpan.org utilizes. It will completely replace the Hacker's Guide in the future.
  • Bloomberg.pm - Changed module to extract data from JSON structure embedded within the HTML - Issue #360
  • NSEIndia.pm - Eliminated need to use temp folders by storing file data from URL into a variable.
#369 #360



113-bit integer arithmetic

Changes for 0.04

  • Allow negative values to be passed to bitwise operators (&, |, ^, ~, >>, <<). These negative values will be converted to their 113-bit 2s-complement value prior to being acted upon by the bitwise operator - thus mimicking perl's treatment of negative 32-bit/64-bit IVs.
  • Add divmod() function.
  • Add new test file t/bitwise_feature.t



List of new CPAN distributions – Mar 2024 submitted by /u/perlancar
[link] [comments]



SPVM Language

Changes for 0.989101 - 2023-04-14

  • Imcompatible Changes
  • Internal Changes
  • Compilation Error Message Improvement


HTTP/2 Dynamic Benchmarks (PHP vs. ModPerl2), 2024 edition.

I ram these about four years ago, and the time differentials were about the same then as now. Monolithic POSIX-threaded server architectures like mp2 + mpm_event will always dominate in low-latency/scalability HTTP/2 benchmarks because they leverage zero-copy in the runtime.

Anyways, sexy terminal graphs with smag to enjoy!

submitted by /u/joesuf4
[link] [comments]



Some basic stat computations with Perl , Python and RLessons learned:
A) Performance freaks to stop using #rstat 's runif for random generation. The Hoshiro random number generator https://arxiv.org/abs/1805.01407 is 10x faster.
Implementations in #perl 's #PDL, #rstats (dqrng) and #python #numpy are within 20% of each other

B) But does it make a difference in applications? To get to the bottom of this, I coded a truncated random variate generator in #rstats and #perl using #pdl (as well as standard u/perl) using the #GSL packages https://metacpan.org/pod/PDL::GSL::CDF & https://metacpan.org/pod/Math::GSL for accessing the CDF & quantile functions. In this context, it's the calculation of the #CDF that is the computationally intensive part, not the drawing of the random number itself.
Well even in these case, the choice of the generator did matter. Note that the fully vectorized #PDL #perl versions were faster than #rstats

C) I should probably blog about these experiments at some point. Note that #pdl (but not base #perl) are rather competitive choices for large array processing with numerical operations. I mostly stay away of #python , but would not surprise me that for compute intensive stuff (where the heavy duty work is done in C/C++), it does not matter (much) which high level language one uses to build data applications

https://preview.redd.it/qn00sx78gbuc1.png?width=1538&format=png&auto=webp&s=1874b9e710c239e9acea36fb54d957167a69b270

https://preview.redd.it/4by4jbh9gbuc1.png?width=1538&format=png&auto=webp&s=dc9944347983445126e4ab57b43c76202ca719d6

submitted by /u/ReplacementSlight413
[link] [comments]

Programming Feed reshared this.





Cross-platform executor for parallel tasks executed in forked processes

Changes for 0.01 - 2024-04-13

  • Initial release


data pack for Business::ISBN

Changes for 20240413.001 - 2024-04-13T19:53:52Z

  • data update for 2024-04-13


Acceptance testing for JSON-Schema based validators

Changes for 1.023 - 2024-04-13T19:25:31Z



Hi, im working on this perl script wherein i should get all files with filename < 900000

Ex. sample_file_802856.txt sample_file_27364692.txt sample_file_385620.txt

the script should get:

sample_file_802856.txt sample_file_385620.txt

I already have the code but it’s failing on this part coz im having a hard time getting the regex for < 900000 😆

submitted by /u/advinculareily
[link] [comments]



The great new Seven!

Changes for 0.01

  • First version, released on an unsuspecting world.


A SQL Database object abstraction class

Changes for v1.3.1 - 2024-04-11T22:27:49Z

  • Modified method 'structure' in DB::Object::Mysql::Table to ensure all fields returned are in lowercase.


Libraries and Utilities to work with Dogecoin

Changes for 1.20240413.0031 - 2024-04-12T17:31:00-07:00

  • removed unnecessary warning


Subroutine attribute for compile-time method lookups on its typed lexicals.


test MIDI file contents

Changes for 0.02 - 2024-04-13

  • Add more MIDI event test functions. Break the midi_track interface a bit. Improve the documentation.


Hi,

I am moving to RedHat 9 from RedHat 7. I am running Apache with mod_perl.

I have installed the mod_perl package on the RedHat 9 box. I am getting this error on bit of code that I wrote:

Can't locate XSLoader.pm: /usr/local/lib64/perl5/5.32/XSLoader.pm: Permission denied at /usr/lib64/perl5/vendor_perl/Apache2/XSLoader.pm line 22.\nBEGIN failed--compilation aborted at /usr/lib64/perl5/vendor_perl/Apache2/XSLoader.pm line 22.\nCompilation failed in require at /usr/lib64/perl5/vendor_perl/Apache2/Access.pm line 24.\nBEGIN failed--compilation aborted at /usr/lib64/perl5/vendor_perl/Apache2/Access.pm line 24. 

When I do a search for XSLoader.pm, I find:
/usr/lib64/perl5/vendor_perl/APR/XSLoader.pm /usr/lib64/perl5/vendor_perl/Apache2/XSLoader.pm /usr/share/perl5/XSLoader.pm 

I am guessing I have some path issue. Any ideas what I may need to do?

thank you

submitted by /u/OrganicStructure1739
[link] [comments]



iterators for objects that know the next element

Changes for 1.148 - 2024-04-10T18:05:54Z

  • need a user release for indexing?


Audit CPAN distributions for known vulnerabilities

Changes for 20240410.001 - 2024-04-10T17:51:12Z

  • data update for 2024-04-10


iterators for objects that know the next element

Changes for 1.147_01 - 2024-04-10T17:42:51Z

  • Try not indexing preprocess/


iterators for objects that know the next element

Changes for 1.147 - 2024-04-10T16:55:14Z

  • Release again to investigate PAUSE indexing issue (#16)
#16


Neo4j community graph database driver for Bolt and HTTP

Changes for 0.48 - 2024-04-10

  • The cypher_params config option now allows 'v2' as a synonym for v2.
  • Minor documentation updates.



Synthesizer settings librarian

Changes for 0.0047 - 2024-04-09T11:28:00Z

  • Improve the specs logic.
  • Improve eg/patch-visualizer.pl.
  • Fix eg/synth-config-mojo.pl to use database specs.



Neo4j community graph database driver for Bolt and HTTP

Changes for 0.47 - 2024-04-09

  • Returning a Result object from a managed transaction function now issues a warning that the Result may not be valid outside the function.
  • Clarify in documentation that concurrent_tx is a legacy feature.
  • Minor documentation fixes.
  • Minor testing improvements.


A Simple base module to implement almost every RESTful API with just a few lines of configuration

Changes for 2.8

  • Change: 83a1a2c4ca5a3ef6e388483c992621f1efead921 Author: Tobias Kirschstein <nupfel@users.noreply.github.com> Date : 2023-08-11 09:55:35 +0000
  • Change: 81d1da85d621ba6f88942bb2a047adb8c01bd9db Author: Michael Schout <schoutm@gmail.com> Date : 2023-08-05 15:32:01 +0000
  • Plus 26 releases after 2023-04-10 00:00:00 +0000.


I work in infosec, specifically in penetration testing. I learned Perl to some extent years ago when Metasploit was still written in Perl (They switched to Ruby). It seems these days that most people in my industry like Python, and some of the most important modules we use in my field are in Python. Does Perl offer any modules as comprehensive as Impacket for hacking protocols such as SMB, WMI, Kerberos, etc?

submitted by /u/aecyberpro
[link] [comments]



Information about the CGI environment

Changes for 0.81 - 2024-04-09T10:08:29Z

  • Use Test::Needs Added t/version.t Added t/tabs.t Mark axios/1.6.7, ias_crawler and ZoominfoBot as robots Block "/**/ORDER/**/BY/**/" in the argument Strip NUL byte poison



An open source web-based network management tool.

Changes for 2.075001 - 2024-04-09

  • ENHANCEMENTS
  • BUG FIXES