#!perl -T use strict; use warnings; sub skipall { my ($msg) = @_; require Test::More; Test::More::plan(skip_all => $msg); } use Config qw/%Config/; BEGIN { my $t_v = '1.67'; my $ts_v = '1.14'; skipall 'This perl wasn\'t built to support threads' unless $Config{useithreads}; skipall "threads $t_v required to test thread safety" unless eval "use threads $t_v; 1"; skipall "threads::shared $ts_v required to test thread safety" unless eval "use threads::shared $ts_v; 1"; } use Test::More; # after threads use Variable::Magic qw/wizard cast dispell getdata VMG_THREADSAFE VMG_OP_INFO_NAME VMG_OP_INFO_OBJECT/; BEGIN { skipall 'This Variable::Magic isn\'t thread safe' unless VMG_THREADSAFE; plan tests => 2 * 3 + 2 * (2 * 10 + 2) + 2 * (2 * 7 + 2); my $v = $threads::VERSION; diag "Using threads $v" if defined $v; $v = $threads::shared::VERSION; diag "Using threads::shared $v" if defined $v; } my $destroyed : shared = 0; my $c : shared = 0; sub spawn_wiz { my ($op_info) = @_; my $wiz = eval { wizard data => sub { $_[1] + threads->tid() }, get => sub { lock $c; ++$c; 0 }, set => sub { my $op = $_[-1]; my $tid = threads->tid(); if ($op_info == VMG_OP_INFO_OBJECT) { is_deeply { class => ref($op), name => $op->name }, { class => 'B::BINOP', name => 'sassign' }, "op object in thread $tid is correct"; } else { is $op, 'sassign', "op name in thread $tid is correct"; } 0 }, free => sub { lock $destroyed; ++$destroyed; 0 }, op_info => $op_info }; is($@, '', "wizard with op_info $op_info in main thread doesn't croak"); isnt($wiz, undef, "wizard with op_info $op_info in main thread is defined"); is($c, 0, "wizard with op_info $op_info in main thread doesn't trigger magic"); return $wiz; } sub try { my ($dispell, $wiz) = @_; my $tid = threads->tid(); my $a = 3; my $res = eval { cast $a, $wiz, sub { 5 }->() }; is($@, '', "cast in thread $tid doesn't croak"); my $b; eval { $b = $a }; is($@, '', "get in thread $tid doesn't croak"); is($b, 3, "get in thread $tid returns the right thing"); my $d = eval { getdata $a, $wiz }; is($@, '', "getdata in thread $tid doesn't croak"); is($d, 5 + $tid, "getdata in thread $tid returns the right thing"); eval { $a = 9 }; is($@, '', "set in thread $tid (check opname) doesn't croak"); if ($dispell) { $res = eval { dispell $a, $wiz }; is($@, '', "dispell in thread $tid doesn't croak"); undef $b; eval { $b = $a }; is($@, '', "get in thread $tid after dispell doesn't croak"); is($b, 9, "get in thread $tid after dispell returns the right thing"); } return; # Ugly if not here } my $wiz_name = spawn_wiz VMG_OP_INFO_NAME; my $wiz_obj = spawn_wiz VMG_OP_INFO_OBJECT; for my $dispell (1, 0) { for my $wiz ($wiz_name, $wiz_obj) { { lock $c; $c = 0; } { lock $destroyed; $destroyed = 0; } my @t = map { threads->create(\&try, $dispell, $wiz) } 1 .. 2; $_->join for @t; { lock $c; is $c, 2, "get triggered twice"; } { lock $destroyed; is $destroyed, (1 - $dispell) * 2, 'destructors'; } } }