#!perl
use strict;
use warnings;
my ($module, $thread_safe_var);
BEGIN {
$module = 'autovivification';
$thread_safe_var = 'autovivification::A_THREADSAFE()';
}
sub load_test {
my $x;
if (defined &autovivification::unimport) {
local $@;
eval 'BEGIN { autovivification->unimport } my $y = $x->[0]';
$x = $@ if $@;
} else {
$x = '';
}
if (not defined $x) {
return 1;
} elsif ( (not ref $x and not length $x)
or (ref $x eq 'ARRAY' and not @$x )) {
return 0;
} else {
return "$x";
}
}
# Keep the rest of the file untouched
use lib 't/lib';
use VPIT::TestHelpers threads => [ $module, $thread_safe_var ];
my $could_not_create_thread = 'Could not create thread';
use Test::Leaner;
sub is_loaded {
my ($affirmative, $desc) = @_;
my $res = load_test();
my $expected;
if ($affirmative) {
$expected = 1;
$desc = "$desc: module loaded";
} else {
$expected = 0;
$desc = "$desc: module not loaded";
}
unless (is $res, $expected, $desc) {
$res = defined $res ? "'$res'" : 'undef';
$expected = "'$expected'";
diag("Test '$desc' failed: got $res, expected $expected");
}
return;
}
BEGIN {
local $@;
my $code = eval "sub { require $module }";
die $@ if $@;
*do_load = $code;
}
is_loaded 0, 'main body, beginning';
# Test serial loadings
SKIP: {
my $thr = spawn(sub {
my $here = "first serial thread";
is_loaded 0, "$here, beginning";
do_load;
is_loaded 1, "$here, after loading";
return;
});
skip "$could_not_create_thread (serial 1)" => 2 unless defined $thr;
$thr->join;
if (my $err = $thr->error) {
die $err;
}
}
is_loaded 0, 'main body, in between serial loadings';
SKIP: {
my $thr = spawn(sub {
my $here = "second serial thread";
is_loaded 0, "$here, beginning";
do_load;
is_loaded 1, "$here, after loading";
return;
});
skip "$could_not_create_thread (serial 2)" => 2 unless defined $thr;
$thr->join;
if (my $err = $thr->error) {
die $err;
}
}
is_loaded 0, 'main body, after serial loadings';
# Test nested loadings
SKIP: {
my $parent = spawn(sub {
my $here = 'parent thread';
is_loaded 0, "$here, beginning";
SKIP: {
my $kid = spawn(sub {
my $here = 'child thread';
is_loaded 0, "$here, beginning";
do_load;
is_loaded 1, "$here, after loading";
return;
});
skip "$could_not_create_thread (nested child)" => 2 unless defined $kid;
$kid->join;
if (my $err = $kid->error) {
die "in child thread: $err\n";
}
}
is_loaded 0, "$here, after child terminated";
do_load;
is_loaded 1, "$here, after loading";
return;
});
skip "$could_not_create_thread (nested parent)" => (3 + 2)
unless defined $parent;
$parent->join;
if (my $err = $parent->error) {
die $err;
}
}
is_loaded 0, 'main body, after nested loadings';
# Test parallel loadings
use threads;
use threads::shared;
my $sync_points = 7;
my @locks_down = (1) x $sync_points;
my @locks_up = (0) x $sync_points;
share($_) for @locks_down, @locks_up;
my $default_peers = 2;
sub sync_master {
my ($id, $peers) = @_;
$peers = $default_peers unless defined $peers;
{
lock $locks_down[$id];
$locks_down[$id] = 0;
cond_broadcast $locks_down[$id];
}
LOCK: {
lock $locks_up[$id];
my $timeout = time() + 10;
until ($locks_up[$id] == $peers) {
if (cond_timedwait $locks_up[$id], $timeout) {
last LOCK;
} else {
return 0;
}
}
}
return 1;
}
sub sync_slave {
my ($id) = @_;
{
lock $locks_down[$id];
cond_wait $locks_down[$id] until $locks_down[$id] == 0;
}
{
lock $locks_up[$id];
$locks_up[$id]++;
cond_signal $locks_up[$id];
}
return 1;
}
for my $first_thread_ends_first (0, 1) {
for my $id (0 .. $sync_points - 1) {
{
lock $locks_down[$id];
$locks_down[$id] = 1;
}
{
lock $locks_up[$id];
$locks_up[$id] = 0;
}
}
my $thr1_end = 'finishes first';
my $thr2_end = 'finishes last';
($thr1_end, $thr2_end) = ($thr2_end, $thr1_end)
unless $first_thread_ends_first;
SKIP: {
my $thr1 = spawn(sub {
my $here = "first simultaneous thread ($thr1_end)";
sync_slave 0;
is_loaded 0, "$here, beginning";
sync_slave 1;
do_load;
is_loaded 1, "$here, after loading";
sync_slave 2;
sync_slave 3;
sync_slave 4;
is_loaded 1, "$here, still loaded while also loaded in the other thread";
sync_slave 5;
sync_slave 6 unless $first_thread_ends_first;
is_loaded 1, "$here, end";
return 1;
});
skip "$could_not_create_thread (parallel 1)" => (4 * 2) unless defined $thr1;
my $thr2 = spawn(sub {
my $here = "second simultaneous thread ($thr2_end)";
sync_slave 0;
is_loaded 0, "$here, beginning";
sync_slave 1;
sync_slave 2;
sync_slave 3;
is_loaded 0, "$here, loaded in other thread but not here";
do_load;
is_loaded 1, "$here, after loading";
sync_slave 4;
sync_slave 5;
sync_slave 6 if $first_thread_ends_first;
is_loaded 1, "$here, end";
return 1;
});
sync_master($_) for 0 .. 5;
if (defined $thr2) {
($thr2, $thr1) = ($thr1, $thr2) unless $first_thread_ends_first;
$thr1->join;
if (my $err = $thr1->error) {
die $err;
}
sync_master(6, 1);
$thr2->join;
if (my $err = $thr1->error) {
die $err;
}
} else {
sync_master(6, 1) unless $first_thread_ends_first;
$thr1->join;
if (my $err = $thr1->error) {
die $err;
}
skip "$could_not_create_thread (parallel 2)" => (4 * 1);
}
}
is_loaded 0, 'main body, after simultaneous threads';
}
# Test simple clone
SKIP: {
my $parent = spawn(sub {
my $here = 'simple clone, parent thread';
is_loaded 0, "$here, beginning";
do_load;
is_loaded 1, "$here, after loading";
SKIP: {
my $kid = spawn(sub {
my $here = 'simple clone, child thread';
is_loaded 1, "$here, beginning";
return;
});
skip "$could_not_create_thread (simple clone child)" => 1
unless defined $kid;
$kid->join;
if (my $err = $kid->error) {
die "in child thread: $err\n";
}
}
is_loaded 1, "$here, after child terminated";
return;
});
skip "$could_not_create_thread (simple clone parent)" => (3 + 1)
unless defined $parent;
$parent->join;
if (my $err = $parent->error) {
die $err;
}
}
is_loaded 0, 'main body, after simple clone';
# Test clone outliving its parent
SKIP: {
my $kid_done;
share($kid_done);
my $parent = spawn(sub {
my $here = 'outliving clone, parent thread';
is_loaded 0, "$here, beginning";
do_load;
is_loaded 1, "$here, after loading";
my $kid_tid;
SKIP: {
my $kid = spawn(sub {
my $here = 'outliving clone, child thread';
is_loaded 1, "$here, beginning";
{
lock $kid_done;
cond_wait $kid_done until $kid_done;
}
is_loaded 1, "$here, end";
return 1;
});
if (defined $kid) {
$kid_tid = $kid->tid;
} else {
$kid_tid = 0;
skip "$could_not_create_thread (outliving clone child)" => 2;
}
}
is_loaded 1, "$here, end";
return $kid_tid;
});
skip "$could_not_create_thread (outliving clone parent)" => (3 + 2)
unless defined $parent;
my $kid_tid = $parent->join;
if (my $err = $parent->error) {
die $err;
}
if ($kid_tid) {
my $kid = threads->object($kid_tid);
if (defined $kid) {
if ($kid->is_running) {
lock $kid_done;
$kid_done = 1;
cond_signal $kid_done;
}
$kid->join;
}
}
}
is_loaded 0, 'main body, after outliving clone';
do_load;
is_loaded 1, 'main body, loaded at end';
done_testing();