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###############################################################################
## ----------------------------------------------------------------------------
## MCE::Core::Validation - Core validation methods for Many-core Engine.
##
## This package provides validation methods used internally by the manager
## process.
##
## There is no public API.
##
###############################################################################
package MCE::Core::Validation;
our $VERSION = '1.516'; $VERSION = eval $VERSION;
## Items below are folded into MCE.
package MCE;
use strict;
use warnings;
## Warnings are disabled to minimize bits of noise when user or OS signals
## the script to exit. e.g. MCE_script.pl < infile | head
no warnings 'threads'; no warnings 'uninitialized';
###############################################################################
## ----------------------------------------------------------------------------
## Validation method (attributes allowed for top-level).
##
###############################################################################
sub _validate_args {
my MCE $_s = $_[0];
die "Private method called" unless (caller)[0]->isa( ref($_s) );
my $_tag = 'MCE::_validate_args';
if (defined $_s->{input_data} && ref $_s->{input_data} eq '') {
_croak("$_tag: '$_s->{input_data}' does not exist")
unless (-e $_s->{input_data});
}
_croak("$_tag: 'use_slurpio' is not 0 or 1")
if ($_s->{use_slurpio} && $_s->{use_slurpio} !~ /\A[01]\z/);
_croak("$_tag: 'parallel_io' is not 0 or 1")
if ($_s->{parallel_io} && $_s->{parallel_io} !~ /\A[01]\z/);
_croak("$_tag: 'job_delay' is not valid")
if ($_s->{job_delay} && (!looks_like_number($_s->{job_delay}) ||
$_s->{job_delay} < 0));
_croak("$_tag: 'spawn_delay' is not valid")
if ($_s->{spawn_delay} && (!looks_like_number($_s->{spawn_delay}) ||
$_s->{spawn_delay} < 0));
_croak("$_tag: 'submit_delay' is not valid")
if ($_s->{submit_delay} && (!looks_like_number($_s->{submit_delay}) ||
$_s->{submit_delay} < 0));
_croak("$_tag: 'freeze' is not a CODE reference")
if ($_s->{freeze} && ref $_s->{freeze} ne 'CODE');
_croak("$_tag: 'thaw' is not a CODE reference")
if ($_s->{thaw} && ref $_s->{thaw} ne 'CODE');
_croak("$_tag: 'on_post_exit' is not a CODE reference")
if ($_s->{on_post_exit} && ref $_s->{on_post_exit} ne 'CODE');
_croak("$_tag: 'on_post_run' is not a CODE reference")
if ($_s->{on_post_run} && ref $_s->{on_post_run} ne 'CODE');
_croak("$_tag: 'user_error' is not a CODE reference")
if ($_s->{user_error} && ref $_s->{user_error} ne 'CODE');
_croak("$_tag: 'user_output' is not a CODE reference")
if ($_s->{user_output} && ref $_s->{user_output} ne 'CODE');
_croak("$_tag: 'flush_file' is not 0 or 1")
if ($_s->{flush_file} && $_s->{flush_file} !~ /\A[01]\z/);
_croak("$_tag: 'flush_stderr' is not 0 or 1")
if ($_s->{flush_stderr} && $_s->{flush_stderr} !~ /\A[01]\z/);
_croak("$_tag: 'flush_stdout' is not 0 or 1")
if ($_s->{flush_stdout} && $_s->{flush_stdout} !~ /\A[01]\z/);
$_s->_validate_args_s();
if (defined $_s->{user_tasks}) {
for my $_t (@{ $_s->{user_tasks} }) {
$_s->_validate_args_s($_t);
_croak("$_tag: 'task_end' is not a CODE reference")
if ($_t->{task_end} && ref $_t->{task_end} ne 'CODE');
}
}
return;
}
###############################################################################
## ----------------------------------------------------------------------------
## Validation method (top-level and sub-tasks).
##
###############################################################################
sub _validate_args_s {
my MCE $self = $_[0];
my $_s = $_[1] || $self;
@_ = ();
die "Private method called" unless (caller)[0]->isa( ref($self) );
my $_tag = 'MCE::_validate_args_s';
_parse_max_workers($_s);
_croak("$_tag: 'max_workers' is not valid")
if (defined $_s->{max_workers} && (
$_s->{max_workers} !~ /\A\d+\z/
));
if ($_s->{chunk_size} =~ /([0-9\.]+)K\z/i) {
$_s->{chunk_size} = int($1 * 1024 + 0.5);
}
elsif ($_s->{chunk_size} =~ /([0-9\.]+)M\z/i) {
$_s->{chunk_size} = int($1 * 1024 * 1024 + 0.5);
}
_croak("$_tag: 'chunk_size' is not valid")
if (defined $_s->{chunk_size} && (
$_s->{chunk_size} !~ /\A\d+\z/ or $_s->{chunk_size} == 0
));
_croak("$_tag: 'RS' is not valid")
if ($_s->{RS} && ref $_s->{RS} ne '');
_croak("$_tag: 'use_threads' is not 0 or 1")
if ($_s->{use_threads} && $_s->{use_threads} !~ /\A[01]\z/);
_croak("$_tag: 'user_begin' is not a CODE reference")
if ($_s->{user_begin} && ref $_s->{user_begin} ne 'CODE');
_croak("$_tag: 'user_func' is not a CODE reference")
if ($_s->{user_func} && ref $_s->{user_func} ne 'CODE');
_croak("$_tag: 'user_end' is not a CODE reference")
if ($_s->{user_end} && ref $_s->{user_end} ne 'CODE');
if (defined $_s->{gather}) {
my $_ref = ref $_s->{gather};
_croak("$_tag: 'gather' is not a valid reference")
if ( $_ref ne 'MCE::Queue' && $_ref ne 'Thread::Queue' &&
$_ref ne 'ARRAY' && $_ref ne 'HASH' && $_ref ne 'CODE' );
}
if (defined $_s->{sequence}) {
my $_seq = $_s->{sequence};
if (ref $_seq eq 'ARRAY') {
my ($_begin, $_end, $_step, $_fmt) = @{ $_seq };
$_seq = {
begin => $_begin, end => $_end, step => $_step, format => $_fmt
};
}
else {
_croak("$_tag: 'sequence' is not a HASH or ARRAY reference")
if (ref $_seq ne 'HASH');
}
_croak("$_tag: 'begin' is not defined for sequence")
unless (defined $_seq->{begin});
_croak("$_tag: 'end' is not defined for sequence")
unless (defined $_seq->{end});
for (qw(begin end step)) {
_croak("$_tag: '$_' is not valid for sequence")
if (defined $_seq->{$_} && !looks_like_number($_seq->{$_}));
}
unless (defined $_seq->{step}) {
$_seq->{step} = ($_seq->{begin} < $_seq->{end}) ? 1 : -1;
if (ref $_s->{sequence} eq 'ARRAY') {
$_s->{sequence}->[2] = $_seq->{step};
}
}
if ( ($_seq->{step} < 0 && $_seq->{begin} < $_seq->{end}) ||
($_seq->{step} > 0 && $_seq->{begin} > $_seq->{end}) ||
($_seq->{step} == 0)
) {
_croak("$_tag: impossible 'step' size for sequence");
}
}
if (defined $_s->{interval}) {
$_s->{interval} = { delay => $_s->{interval} }
if (ref $_s->{interval} eq '');
my $_i = $_s->{interval};
_croak("$_tag: 'interval' is not a HASH reference")
if (ref $_i ne 'HASH');
_croak("$_tag: 'delay' is not defined for interval")
unless (defined $_i->{delay});
_croak("$_tag: 'delay' is not valid for interval")
if (!looks_like_number($_i->{delay}) || $_i->{delay} < 0);
for (qw(max_nodes node_id)) {
_croak("$_tag: '$_' is not valid for interval")
if (defined $_i->{$_} && (
!looks_like_number($_i->{$_}) || int($_i->{$_}) != $_i->{$_} ||
$_i->{$_} < 1
));
}
$_i->{max_nodes} = 1 unless (exists $_i->{max_nodes});
$_i->{node_id} = 1 unless (exists $_i->{node_id});
$_i->{_time} = time();
}
return;
}
###############################################################################
## ----------------------------------------------------------------------------
## Validation method (run state).
##
###############################################################################
sub _validate_runstate {
my MCE $self = $_[0]; my $_tag = $_[1];
_croak("$_tag: method cannot be called by the worker process")
if ($self->{_wid});
_croak("$_tag: method cannot be called while processing")
if ($self->{_send_cnt});
_croak("$_tag: method cannot be called while running")
if ($self->{_total_running});
return;
}
1;
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