Scroll to navigation

MCE::Subs(3pm) User Contributed Perl Documentation MCE::Subs(3pm)

NAME

MCE::Subs - Exports functions mapped directly to MCE methods

VERSION

This document describes MCE::Subs version 1.838

SYNOPSIS

 use MCE::Subs;  ## Exports manager and worker functions only
                 ## Getter functions are not exported by default

 use MCE::Subs qw( :getter  );  ## All, including getter functions
 use MCE::Subs qw( :manager );  ## Exports manager functions only
 use MCE::Subs qw( :worker  );  ## Exports worker functions only

 use MCE::Subs qw( :getter :worker );  ## Excludes manager functions

DESCRIPTION

This module exports functions mapped to MCE methods. All exported functions are prototyped, therefore allowing one to call them without using parentheses. 

 use MCE::Subs qw( :worker );

 sub user_func {
    my $wid = MCE->wid;

    mce_say "A: $wid";
    mce_sync;

    mce_say "B: $wid";
    mce_sync;

    mce_say "C: $wid";
    mce_sync;

    return;
 }

 MCE->new(
    max_workers => 24, user_func => \&user_func
 );

 mce_run 0 for (1..100);   ## 0 means do not shutdown after running

For the next example, we only want the worker functions to be exported due to using MCE::Map, which takes care of creating a MCE instance and running.

 use MCE::Map;
 use MCE::Subs qw( :worker );

 ## The following serializes output to STDOUT and gathers $_ to @a.
 ## mce_say displays $_ when called without arguments.

 my @a = mce_map { mce_say; $_ } 1 .. 100;

 print scalar @a, "\n";

Unlike the native Perl functions, printf, print, and say methods require the comma after the glob reference or file handle.

 MCE->printf(\*STDERR, "%s\n", $error_msg);
 MCE->print(\*STDERR, $error_msg, "\n");
 MCE->say(\*STDERR, $error_msg);
 MCE->say($fh, $error_msg);

 mce_printf \*STDERR, "%s\n", $error_msg;
 mce_print \*STDERR, $error_msg, "\n";
 mce_say \*STDERR, $error_msg;
 mce_say $fh, $error_msg;

FUNCTIONS for the MANAGER PROCESS via ( :manager )

MCE methods are described in MCE::Core.
  • mce_abort
  • mce_forchunk
  • mce_foreach
  • mce_forseq
  • mce_freeze
  • mce_process
  • mce_relay_final
  • mce_restart_worker
  • mce_run
  • mce_print
  • mce_printf
  • mce_say
  • mce_send
  • mce_shutdown
  • mce_spawn
  • mce_status
  • mce_thaw

FUNCTIONS for MCE WORKERS via ( :worker )

MCE methods are described in MCE::Core.
  • mce_abort
  • mce_do
  • mce_exit
  • mce_freeze
  • mce_gather
  • mce_last
  • mce_next
  • mce_print
  • mce_printf
  • mce_relay
  • mce_relay_recv
  • mce_say
  • mce_sendto
  • mce_sync
  • mce_thaw
  • mce_yield

GETTERS for MCE ATTRIBUTES via ( :getter )

MCE methods are described in MCE::Core.
  • mce_chunk_id
  • mce_chunk_size
  • mce_max_retries
  • mce_max_workers
  • mce_pid
  • mce_sess_dir
  • mce_task_id
  • mce_task_name
  • mce_task_wid
  • mce_tmp_dir
  • mce_user_args
  • mce_wid

INDEX

MCE, MCE::Core

AUTHOR

Mario E. Roy, <marioeroy AT gmail DOT com>
2019-01-30 perl v5.28.1