#! /usr/bin/env perl
# brian d foy: "Compiled perlpod should be faster then uncompiled"
use Test::More;
use strict;
BEGIN {
unshift @INC, 't';
require "test.pl";
}
use Config;
use File::Spec;
use Time::HiRes qw(gettimeofday tv_interval);
sub faster { ($_[1] - $_[0]) < 0.05 }
sub diagv {
diag @_ if $ENV{TEST_VERBOSE};
}
sub todofaster {
my ($t1, $t2, $cmt) = @_;
if (faster($t1,$t2)) {
ok(1, $cmt);
} else {
TODO: {
# esp. with $ENV{HARNESS_ACTIVE}
local $TODO = " (unreliable timings with parallel testing)";
ok(0, $cmt);
}
}
}
my $X = $^X =~ m/\s/ ? qq{"$^X"} : $^X;
my $Mblib = Mblib();
my $perldoc = File::Spec->catfile($Config{installbin}, 'perldoc');
my $perlcc = "$X $Mblib blib/script/perlcc";
$perlcc .= " -Wb=-fno-fold,-fno-warnings" if $] > 5.013;
$perlcc .= " -UB -uFile::Spec";
# . " -uPod::Perldoc::ToMan -uPod::Perldoc::ToText -uPod::Perldoc::BaseTo";
my $exe = $Config{exe_ext};
my $perldocexe = $^O eq 'MSWin32' ? "perldoc$exe" : "./perldoc$exe";
# XXX bother File::Which?
die "1..1 # $perldoc not found\n" unless -f $perldoc;
plan tests => 7;
# XXX interestingly 5.8 perlcc cannot compile perldoc because Cwd disturbs the method finding
# vice versa 5.14 cannot be compile perldoc manually because File::Temp is not included
my $compile = $]<5.010?"$X $Mblib -MO=C,-UB,-operldoc.c $perldoc":"$perlcc -o $perldocexe $perldoc";
diagv $compile;
my $res = `$compile`;
system("$X $Mblib script/cc_harness -o $perldocexe perldoc.c") if $] < 5.010;
ok(-s $perldocexe, "$perldocexe compiled"); #1
diagv "see if $perldoc -T works";
my $T_opt = "-- -T -f wait";
my $ori;
my $PAGER = '';
my ($result, $out, $err);
my $t0 = [gettimeofday];
if ($^O eq 'MSWin32') {
$T_opt = "-- -t -f wait";
$PAGER = "PERLDOC_PAGER=type ";
($result, $ori, $err) = run_cmd("$PAGER$X -S $perldoc $T_opt", 20);
} else {
($result, $ori, $err) = run_cmd("$X -S $perldoc $T_opt 2>&1", 20);
}
my $t1 = tv_interval( $t0 );
if ($ori =~ /Unknown option/) {
$T_opt = "-- -t -f wait";
$PAGER = "PERLDOC_PAGER=cat " if $^O ne 'MSWin32';
diagv "No, use $PAGER instead";
$t0 = [gettimeofday];
($result, $ori, $err) = run_cmd("$PAGER$X -S $perldoc $T_opt", 20);
$t1 = tv_interval( $t0 );
} else {
diagv "it does";
}
$t0 = [gettimeofday];
($result, $out, $err) = run_cmd("$PAGER $perldocexe $T_opt", 20);
my $t2 = tv_interval( $t0 );
TODO: {
# old perldoc 3.14_04-3.15_04: Can't locate object method "can" via package "Pod::Perldoc" at /usr/local/lib/perl5/5.14.1/Pod/Perldoc/GetOptsOO.pm line 34
# dev perldoc 3.15_13: Can't locate object method "_is_mandoc" via package "Pod::Perldoc::ToMan"
local $TODO = "compiled does not print yet" if $] < 5.010;
$ori =~ s{ /\S*perldoc }{ perldoc };
$out =~ s{ ./perldoc }{ perldoc };
is($out, $ori, "same result"); #2
}
SKIP: {
skip "cannot compare times", 1 if $out ne $ori;
todofaster($t1,$t2,"compiled faster than uncompiled: $t2 < $t1"); #3
}
unlink $perldocexe if -e $perldocexe;
$perldocexe = $^O eq 'MSWin32' ? "perldoc_O3$exe" : "./perldoc_O3$exe";
$compile = $]<5.010?"$X $Mblib -MO=C,-O3,-UB,-uFile::Spec,-operldoc.c $perldoc":"$perlcc -O3 -o $perldocexe $perldoc";
diagv $compile;
$res = `$compile`;
system("$X $Mblib script/cc_harness -o $perldocexe perldoc.c") if $] < 5.010;
ok(-s $perldocexe, "perldoc compiled"); #4
unlink "perldoc.c" if $] < 5.10;
diagv $res unless -s $perldocexe;
$t0 = [gettimeofday];
($result, $out, $err) = run_cmd("$PAGER $perldocexe $T_opt", 20);
my $t3 = tv_interval( $t0 );
TODO: {
local $TODO = "compiled does not print yet" if $] < 5.010;
$out =~ s{ ./perldoc_O3 }{ perldoc };
is($out, $ori, "same result"); #5
}
SKIP: {
skip "cannot compare times", 2 if $out ne $ori;
todofaster($t2,$t3,"compiled -O3 not slower than -O0: $t3 <= $t2"); #6
todofaster($t1,$t3,"compiled -O3 faster than uncompiled: $t3 < $t1"); #7
}
END {
unlink $perldocexe if -e $perldocexe;
}