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###############################################################################
## ----------------------------------------------------------------------------
## Array_ref and Glob_ref input reader.
##
## This package provides the request chunk method used internally by the worker
## process. Distribution follows a bank-queuing model.
##
## There is no public API.
##
###############################################################################
package MCE::Core::Input::Request;
use strict;
use warnings;
our $VERSION = '1.806';
## Items below are folded into MCE.
package # hide from rpm
MCE;
no warnings qw( threads recursion uninitialized );
use bytes;
###############################################################################
## ----------------------------------------------------------------------------
## Worker process -- Request chunk.
##
###############################################################################
sub _worker_request_chunk {
my ($self, $_proc_type) = @_;
@_ = ();
_croak('MCE::_worker_request_chunk: (user_func) is not specified')
unless (defined $self->{user_func});
my $_chn = $self->{_chn};
my $_DAT_LOCK = $self->{_dat_lock};
my $_DAT_W_SOCK = $self->{_dat_w_sock}->[0];
my $_DAU_W_SOCK = $self->{_dat_w_sock}->[$_chn];
my $_lock_chn = $self->{_lock_chn};
my $_single_dim = $self->{_single_dim};
my $_chunk_size = $self->{chunk_size};
my $_use_slurpio = $self->{use_slurpio};
my $_RS = $self->{RS} || $/;
my $_RS_FLG = (!$_RS || $_RS ne $LF);
my $_I_FLG = (!$/ || $/ ne $LF);
my $_wuf = $self->{_wuf};
my ($_dat_ex, $_dat_un);
if ($_lock_chn) {
$_dat_ex = sub { sysread ( $_DAT_LOCK->{_r_sock}, my $_b, 1 ) };
$_dat_un = sub { syswrite ( $_DAT_LOCK->{_w_sock}, '0' ) };
}
my ($_chunk_id, $_len, $_output_tag);
my ($_chop_len, $_chop_str, $_p);
if ($_proc_type == REQUEST_ARRAY) {
$_output_tag = OUTPUT_A_ARY;
$_chop_len = 0;
}
else {
$_output_tag = OUTPUT_S_GLB;
if (length $_RS > 1 && substr($_RS, 0, 1) eq "\n") {
$_chop_str = substr($_RS, 1);
$_chop_len = length $_chop_str;
} else {
$_chop_str = '';
$_chop_len = 0;
}
}
## -------------------------------------------------------------------------
$self->{_next_jmp} = sub { goto _WORKER_REQUEST_CHUNK__NEXT; };
$self->{_last_jmp} = sub { goto _WORKER_REQUEST_CHUNK__LAST; };
local $_;
_WORKER_REQUEST_CHUNK__NEXT:
while (1) {
undef $_ if (length > MAX_CHUNK_SIZE);
$_ = '';
## Obtain the next chunk of data.
{
local $\ = undef if (defined $\); local $/ = $LF if ($_I_FLG);
$_dat_ex->() if $_lock_chn;
print {$_DAT_W_SOCK} $_output_tag . $LF . $_chn . $LF;
chomp($_len = <$_DAU_W_SOCK>);
unless ($_len) {
$_dat_un->() if $_lock_chn;
return;
}
chomp($_chunk_id = <$_DAU_W_SOCK>);
if ($_chunk_id > 1 && $_chop_len) {
$_p = $_chop_len; $_ = $_chop_str;
} else {
$_p = 0;
}
read $_DAU_W_SOCK, $_, $_len, $_p;
$_dat_un->() if $_lock_chn;
}
## Call user function.
if ($_proc_type == REQUEST_ARRAY) {
if ($_single_dim && $_chunk_size == 1) {
$_wuf->($self, [ $_ ], $_chunk_id);
}
else {
my $_chunk_ref = $self->{thaw}($_); undef $_;
$_ = ($_chunk_size == 1) ? $_chunk_ref->[0] : $_chunk_ref;
$_wuf->($self, $_chunk_ref, $_chunk_id);
}
}
else {
if ($_use_slurpio) {
if ($_chop_len && substr($_, -$_chop_len) eq $_chop_str) {
substr($_, -$_chop_len, $_chop_len, '');
}
local $_ = \$_;
$_wuf->($self, $_, $_chunk_id);
}
else {
if ($_chunk_size == 1) {
if ($_chop_len && substr($_, -$_chop_len) eq $_chop_str) {
substr($_, -$_chop_len, $_chop_len, '');
}
$_wuf->($self, [ $_ ], $_chunk_id);
}
else {
my @_recs;
{
local $/ = $_RS if ($_RS_FLG);
_sync_buffer_to_array(\$_, \@_recs, $_chop_str);
undef $_;
}
if ($_chop_len) {
for my $i (0 .. @_recs - 1) {
if (substr($_recs[$i], -$_chop_len) eq $_chop_str) {
substr($_recs[$i], -$_chop_len, $_chop_len, '');
}
}
}
local $_ = \@_recs;
$_wuf->($self, \@_recs, $_chunk_id);
}
}
}
}
_WORKER_REQUEST_CHUNK__LAST:
return;
}
1;
|
