use Test::More;
use POSIX ();
use Linux::Smaps;
sub check_readable {
my ($pid, $re)=@_;
open my $fh, '<', "/proc/$pid/smaps" or return;
local $/;
return scalar(readline $fh)=~$re;
}
BEGIN {
if( check_readable $$, qr/\bperl\b/ ) {
plan tests=>10;
} else {
plan skip_all=>
"Cannot read /proc/$$/smaps or didn't find 'perl' in the output";
}
}
POSIX::setlocale( &POSIX::LC_ALL, "C" );
my ($s, $old);
$s=Linux::Smaps->new;
$old=Linux::Smaps->new;
ok $s, 'constructor';
ok scalar grep( {$_->file_name=~/perl/} $s->vmas), 'perl found';
my ($newlist, $difflist, $oldlist)=$s->diff( $s );
ok @$newlist==0 && @$difflist==0 && @$oldlist==0, 'no diff';
sub make_me_grow {
"a" x $_[0];
}
my $dirty=$s->private_dirty;
make_me_grow 1024*1024;
$s->update;
print "# dirty grows from $dirty to ".$s->private_dirty."\n";
ok $s->private_dirty>$dirty+1024, 'dirty has grown';
($newlist, $difflist, $oldlist)=$s->diff( $old );
my ($newlist2, $difflist2, $oldlist2)=$old->diff( $s );
ok eq_set($newlist, $oldlist2), 'newlist=oldlist2';
ok eq_set($difflist, [map {[@{$_}[1,0]]} @$difflist2]), 'difflist=difflist2';
ok eq_set($oldlist, $newlist2), 'oldlist=newlist2';
my $pid; select undef, undef, undef, .2 until defined( $pid=fork );
unless( $pid ) {
require Devel::Peek;
sleep 10;
exit 0;
}
SKIP: {
my $max=50;
select undef, undef, undef, .2
while $max-- and !check_readable $pid, qr/\bPeek\b/;
unless($max>=0) {
kill 'KILL', $pid;
skip "Cannot find /Peek/ in /proc/$pid/smaps"=>1;
}
$s->pid=$pid; $s->update;
ok scalar( grep {$_->file_name=~/Peek\.so$/} $s->vmas ), 'other process';
kill 'KILL', $pid;
}
eval {Linux::Smaps->new(0)};
ok $@ eq "Linux::Smaps: Cannot open /proc/0/smaps: No such file or directory\n",
'error1';
$s=Linux::Smaps->new(uninitialized=>1);
$s->pid=-1; $s->update;
ok $s->lasterror eq "Cannot open /proc/-1/smaps: No such file or directory",
'error2';
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