On Linux systems various information about the CPU ( or CPUs ) in the
computer can be gleaned from C</proc/cpuinfo>. This module provides an
object oriented interface to that information for relatively simple use
in Raku programs.


Linux::Cpuinfo - Object Oriented Interface to /proc/cpuinfo


NAME

code

=begin code

  use Linux::Cpuinfo;

  my $cpuinfo = Linux::Cpuinfo.new();

  my $cnt  = $cpuinfo.num_cpus();   # > 1 for an SMP system

  for $cpuinfo.cpus -> $cpu {
     say $cpu.bogomips;
  }

=end code


SYNOPSIS

DESCRIPTION

METHODS


class Linux::Cpuinfo:ver<0.0.9>:auth<github:jonathanstowe>:api<1.0> {
    has Str                 $.filename = '/proc/cpuinfo';
    has Str                 $.cpu-info;
    has Linux::Cpuinfo::Cpu @.cpus;
    has Int                 $.num-cpus;
    has Str                 $.arch = $*KERNEL.hardware;
    has $.cpu-class;

    #| Returns an L<doc:Array> of objects of a sub-class of L<doc:Linux::Cpuinfo::Cpu>
    #| that contain the details of each cpu core in the system.  This may be more than
    #| the physical cores in the processor chip(s) if the processor has some mechanism
    #| such as "hyper-threading".
    method cpus() {
        if not @!cpus.elems > 0 {
            for $.cpu-info.split( /\n\n/ ) -> $cpu {
                if $cpu.chars > 0 {
                    my $co = self.cpu-class.new($cpu);

                    # It seems that single core arm6 or 7 cores highlight
                    # a bug where there is a spurious \n in there
                    # The alert will correctly surmise this breaks for assymetric cpus

                    if @!cpus.elems > 0 and @!cpus[*-1].fields.elems != $co.fields.elems {
                        @!cpus[*-1].fields.push($co.fields.pairs);
                    }
                    else {
                        @!cpus.push($co);
                    }
                }
            }
        }
        @!cpus;
    }

    method cpu-info(--> Str) {
        $!cpu-info //= $!filename.IO.slurp;
    }

    #| Build a sub class of Linux::Cpuinfo::Cpu
    method cpu-class( --> Mu ) {
        if not $!cpu-class.isa(Linux::Cpuinfo::Cpu) {
            my $class-name = 'Linux::Cpuinfo::Cpu::' ~ $!arch.tc;
            $!cpu-class := Metamodel::ClassHOW.new_type(name => $class-name);
            $!cpu-class.^add_parent(Linux::Cpuinfo::Cpu);
            $!cpu-class.^compose;
        }
        $!cpu-class;
    }

    #| Returns the number of CPU cores reported by the kernel.
    #| This may be the number of "virtual cores" if the CPU
    #| has a mechanism such as "hyper-threading"
    method num-cpus( --> Int ) {
        if not $!num-cpus.defined {
            $!num-cpus = self.cpus.elems;
        }
        $!num-cpus;
    }
}
# vim: expandtab shiftwidth=4 ft=raku


root

An array of sub-classes of this type will be returned by Linux::Cpuinfo.cpus


It provides an interface to the information provided by the kernel with generated
accessor methods for each of the fields.


Linux::Cpuinfo::Cpu - per cpu core information.


README

React

=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


=begin React :component<HeaderCol> :id<footer>  
=begin nested :!nested
=item1 B<Language>
    =item2 L<Get started|file:../getting-started/getting-started.podlite>
    =item2 L<Why Raku?|/doc/language/faq#Why-should-I-learn-Raku-What's-so-great-about-it>
    =item2 L<Try Raku|https://glot.io/new/raku>
    =item2 L<Raku cheat sheet|https://github.com/Raku/mu/blob/master/docs/Perl6/Cheatsheet/cheatsheet.txt>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<Raku on Exercism|https://exercism.org/tracks/raku>
    =item2 L<Wikipedia|https://en.wikipedia.org/wiki/Raku_(programming_language)>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=begin nested :!nested

=item1 B<L<Documentation|/doc>>
    =item2 L<Getting started, Migration guides from other languages, & Tutorials | file:../doc/introduction.podlite>
    =item2 L<Language References|file:../doc/reference.podlite>
    =item2 L<Type Reference| file:../doc/types.podlite>
    =item2 L<Miscellaneous| file:../doc/miscellaneous.podlite>
    =item2 L<FAQs (Frequently Asked Questions)|/doc/language/faq>
    =item2 L<Community|/doc/language/community>
    =item2 L<The list of all documents|file:../doc/index.podlite>

=item1 B<Resources>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>

=end nested
=begin nested :!nested

=item1 B<Resoures>
    =item2 L<Download | file:../download/index.podlite>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=item1 B<Learning>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Wikibook |https://en.wikibooks.org/wiki/Raku_Programming>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>
    =item2 L<Learn Raku in Y minutes|https://learnxinyminutes.com/docs/raku/>
    =item2 L<Golfing |https://github.com/AlexDaniel/raku-golf-cheatsheet>
=end nested
=begin nested :!nested

=item1 B<Explore>
    =item2 L<Raku Blog Aggregator|https://planet.raku.org/>
    =item2 L<Rakudo Weekly|https://rakudoweekly.blog/>
    =item2 L<The Weekly Challenge |https://perlweeklychallenge.org/>
    =item2 L<Raku Advent Calendar|https://raku-advent.blog/>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=end React


=begin React :component<CookieConsent> :id<CookieConsent> :buttonCaption("Got it!")
=para
This website uses cookies for analytics.
=end React


Linux::Cpuinfo - Object Oriented Interface to /proc/cpuinfo

NAME

SYNOPSIS

METHODS

Linux::Cpuinfo v0.1.1

Authors

License

Dependencies

Test Dependencies

Provides

Documentation