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use Config;
BEGIN {
unless ($Config{useithreads}) {
print "1..0 # SKIP your perl does not support ithreads\n";
exit 0;
}
if ($INC{'Devel/Cover.pm'}) {
print "1..0 # SKIP Devel::Cover does not work with threads yet\n";
exit 0;
}
}
use threads;
use strict;
use warnings;
use Test::More;
use Test::Exception;
plan skip_all => 'DBIC does not actively support threads before perl 5.8.5'
if $] < '5.008005';
use DBIx::Class::Optional::Dependencies ();
use lib qw(t/lib);
use DBICTest;
plan skip_all => 'Test needs ' . DBIx::Class::Optional::Dependencies->req_missing_for ('rdbms_pg')
unless DBIx::Class::Optional::Dependencies->req_ok_for ('rdbms_pg');
my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
plan skip_all => 'Set $ENV{DBICTEST_PG_DSN}, _USER and _PASS to run this test'
. ' (note: creates and drops a table named artist!)' unless ($dsn && $user);
# README: If you set the env var to a number greater than 10,
# we will use that many children
my $num_children = $ENV{DBICTEST_THREAD_STRESS} || 1;
if($num_children !~ /^[0-9]+$/ || $num_children < 10) {
$num_children = 10;
}
use_ok('DBICTest::Schema');
my $schema = DBICTest::Schema->connect($dsn, $user, $pass, { AutoCommit => 1, RaiseError => 1, PrintError => 0 });
my $parent_rs;
lives_ok (sub {
my $dbh = $schema->storage->dbh;
{
local $SIG{__WARN__} = sub {};
eval { $dbh->do("DROP TABLE cd") };
$dbh->do("CREATE TABLE cd (cdid serial PRIMARY KEY, artist INTEGER NOT NULL UNIQUE, title VARCHAR(100) NOT NULL UNIQUE, year VARCHAR(100) NOT NULL, genreid INTEGER, single_track INTEGER);");
}
$schema->resultset('CD')->create({ title => 'vacation in antarctica', artist => 123, year => 1901 });
$schema->resultset('CD')->create({ title => 'vacation in antarctica part 2', artist => 456, year => 1901 });
$parent_rs = $schema->resultset('CD')->search({ year => 1901 });
is ($parent_rs->count, 2);
}, 'populate successfull');
# basic tests
{
ok ($schema->storage->connected(), 'Parent is connected');
is ($parent_rs->next->id, 1, 'Cursor advanced');
my $ct_num = Test::More->builder->current_test;
my $newthread = async {
my $out = '';
#simulate a subtest to not confuse the parent TAP emission
my $tb = Test::More->builder;
$tb->reset;
for (qw/output failure_output todo_output/) {
close $tb->$_;
open ($tb->$_, '>', \$out);
}
ok(!$schema->storage->connected, "storage->connected() false in child");
for (1,2) {
throws_ok { $parent_rs->next } qr/\QMulti-thread access attempted while cursor in progress (position 1)/;
}
$parent_rs->reset;
is($parent_rs->next->id, 1, 'Resetting cursor reprepares it within child environment');
done_testing;
close $tb->$_ for (qw/output failure_output todo_output/);
sleep(1); # tasty crashes without this
$out;
};
die "Thread creation failed: $! $@" if !defined $newthread;
my $out = $newthread->join;
$out =~ s/^/ /gm;
print $out;
# workaround for older Test::More confusing the plan under threads
Test::More->builder->current_test($ct_num);
is ($parent_rs->next->id, 2, 'Cursor still intact in parent');
is ($parent_rs->next, undef, 'Cursor exhausted');
}
$parent_rs->reset;
my @children;
while(@children < $num_children) {
my $newthread = async {
my $tid = threads->tid;
my $child_rs = $schema->resultset('CD')->search({ year => 1901 });
my $row = $parent_rs->next;
if($row && $row->get_column('artist') =~ /^(?:123|456)$/) {
$schema->resultset('CD')->create({ title => "test success $tid", artist => $tid, year => scalar(@children) });
}
sleep(1); # tasty crashes without this
};
die "Thread creation failed: $! $@" if !defined $newthread;
push(@children, $newthread);
}
ok(1, "past spawning");
{
$_->join for(@children);
}
ok(1, "past joining");
while(@children) {
my $child = pop(@children);
my $tid = $child->tid;
my $rs = $schema->resultset('CD')->search({ title => "test success $tid", artist => $tid, year => scalar(@children) });
is($rs->next->get_column('artist'), $tid, "Child $tid successful");
}
ok(1, "Made it to the end");
undef $parent_rs;
$schema->storage->dbh->do("DROP TABLE cd");
done_testing;
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