1 package #hide from pause
7 use base qw(DBICTest::Base DBIx::Class::Schema);
9 use Fcntl qw(:DEFAULT :seek :flock);
10 use Time::HiRes 'sleep';
11 use DBICTest::Util::LeakTracer qw(populate_weakregistry assert_empty_weakregistry);
12 use DBICTest::Util 'local_umask';
17 # we need the $locker to be referenced here for delayed destruction
18 if ($locker->{lock_name} and ($ENV{DBICTEST_LOCK_HOLDER}||0) == $$) {
19 #warn "$$ $0 $locker->{type} LOCK RELEASED";
23 my $weak_registry = {};
26 my $self = shift->next::method(@_);
29 # we can't really lock based on DSN, as we do not yet have a way to tell that e.g.
30 # DBICTEST_MSSQL_DSN=dbi:Sybase:server=192.168.0.11:1433;database=dbtst
32 # DBICTEST_MSSQL_ODBC_DSN=dbi:ODBC:server=192.168.0.11;port=1433;database=dbtst;driver=FreeTDS;tds_version=8.0
34 # hence we lock everything based on sqlt_type or just globally if not available
35 # just pretend we are python you know? :)
38 # when we get a proper DSN resolution sanitize to produce a portable lockfile name
39 # this may look weird and unnecessary, but consider running tests from
40 # windows over a samba share >.>
42 #$dsn =~ s/([^A-Za-z0-9_\-\.\=])/ sprintf '~%02X', ord($1) /ge;
43 #$dsn =~ s/^dbi/dbi/i;
45 # provide locking for physical (non-memory) DSNs, so that tests can
46 # safely run in parallel. While the harness (make -jN test) does set
47 # an envvar, we can not detect when a user invokes prove -jN. Hence
48 # perform the locking at all times, it shouldn't hurt.
49 # the lock fh *should* inherit across forks/subprocesses
51 # File locking is hard. Really hard. By far the best lock implementation
52 # I've seen is part of the guts of File::Temp. However it is sadly not
53 # reusable. Since I am not aware of folks doing NFS parallel testing,
54 # nor are we known to work on VMS, I am just going to punt this and
55 # use the portable-ish flock() provided by perl itself. If this does
56 # not work for you - patches more than welcome.
58 ! $DBICTest::global_exclusive_lock
60 ( ! $ENV{DBICTEST_LOCK_HOLDER} or $ENV{DBICTEST_LOCK_HOLDER} == $$ )
64 ($_[0]||'') !~ /^ (?i:dbi) \: SQLite \: (?: dbname\= )? (?: \:memory\: | t [\/\\] var [\/\\] DBIxClass\-) /x
68 # guard against infinite recursion
69 local $ENV{DBICTEST_LOCK_HOLDER} = -1;
71 # we need to connect a forced fresh clone so that we do not upset any state
72 # of the main $schema (some tests examine it quite closely)
73 local $SIG{__WARN__} = sub {};
76 my $st = ref($self)->connect(@{$self->storage->connect_info})->storage;
77 $st->ensure_connected; # do connect here, to catch a possible throw
82 my $t = $storage->sqlt_type || 'generic';
83 eval { $storage->disconnect };
90 # Never hold more than one lock. This solves the "lock in order" issues
91 # unrelated tests may have
92 # Also if there is no connection - there is no lock to be had
93 if ($locktype and (!$locker or $locker->{type} ne $locktype)) {
95 # this will release whatever lock we may currently be holding
96 # which is fine since the type does not match as checked above
99 my $lockpath = DBICTest::RunMode->tmpdir->file("_dbictest_$locktype.lock");
101 #warn "$$ $0 $locktype GRABBING LOCK";
104 my $u = local_umask(0); # so that the file opens as 666, and any user can lock
105 sysopen ($lock_fh, $lockpath, O_RDWR|O_CREAT) or die "Unable to open $lockpath: $!";
107 flock ($lock_fh, LOCK_EX) or die "Unable to lock $lockpath: $!";
108 #warn "$$ $0 $locktype LOCK GRABBED";
110 # see if anyone was holding a lock before us, and wait up to 5 seconds for them to terminate
111 # if we do not do this we may end up trampling over some long-running END or somesuch
112 seek ($lock_fh, 0, SEEK_SET) or die "seek failed $!";
115 read ($lock_fh, $old_pid, 100)
117 ($old_pid) = $old_pid =~ /^(\d+)$/
120 kill (0, $old_pid) or last;
124 #warn "$$ $0 $locktype POST GRAB WAIT";
126 truncate $lock_fh, 0;
127 seek ($lock_fh, 0, SEEK_SET) or die "seek failed $!";
128 $lock_fh->autoflush(1);
131 $ENV{DBICTEST_LOCK_HOLDER} ||= $$;
136 lock_name => "$lockpath",
141 if ($INC{'Test/Builder.pm'}) {
142 populate_weakregistry ( $weak_registry, $self->storage );
144 my $cur_connect_call = $self->storage->on_connect_call;
146 $self->storage->on_connect_call([
147 (ref $cur_connect_call eq 'ARRAY'
149 : ($cur_connect_call || ())
152 populate_weakregistry( $weak_registry, shift->_dbh )
161 my $self = shift->next::method(@_);
162 populate_weakregistry ( $weak_registry, $self )
163 if $INC{'Test/Builder.pm'};
168 assert_empty_weakregistry($weak_registry, 'quiet');