use base qw(DBICTest::Base DBIx::Class::Schema);
+use Fcntl qw(:DEFAULT :seek :flock);
+use Time::HiRes 'sleep';
+use DBICTest::Util::LeakTracer qw(populate_weakregistry assert_empty_weakregistry);
+use DBICTest::Util 'local_umask';
+use namespace::clean;
+
+our $locker;
+END {
+ # we need the $locker to be referenced here for delayed destruction
+ if ($locker->{lock_name} and ($ENV{DBICTEST_LOCK_HOLDER}||0) == $$) {
+ #warn "$$ $0 $locker->{type} LOCK RELEASED";
+ }
+}
+
+my $weak_registry = {};
+
+sub connection {
+ my $self = shift->next::method(@_);
+
+# MASSIVE FIXME
+# we can't really lock based on DSN, as we do not yet have a way to tell that e.g.
+# DBICTEST_MSSQL_DSN=dbi:Sybase:server=192.168.0.11:1433;database=dbtst
+# and
+# DBICTEST_MSSQL_ODBC_DSN=dbi:ODBC:server=192.168.0.11;port=1433;database=dbtst;driver=FreeTDS;tds_version=8.0
+# are the same server
+# hence we lock everything based on sqlt_type or just globally if not available
+# just pretend we are python you know? :)
+
+
+ # when we get a proper DSN resolution sanitize to produce a portable lockfile name
+ # this may look weird and unnecessary, but consider running tests from
+ # windows over a samba share >.>
+ #utf8::encode($dsn);
+ #$dsn =~ s/([^A-Za-z0-9_\-\.\=])/ sprintf '~%02X', ord($1) /ge;
+ #$dsn =~ s/^dbi/dbi/i;
+
+ # provide locking for physical (non-memory) DSNs, so that tests can
+ # safely run in parallel. While the harness (make -jN test) does set
+ # an envvar, we can not detect when a user invokes prove -jN. Hence
+ # perform the locking at all times, it shouldn't hurt.
+ # the lock fh *should* inherit across forks/subprocesses
+ #
+ # File locking is hard. Really hard. By far the best lock implementation
+ # I've seen is part of the guts of File::Temp. However it is sadly not
+ # reusable. Since I am not aware of folks doing NFS parallel testing,
+ # nor are we known to work on VMS, I am just going to punt this and
+ # use the portable-ish flock() provided by perl itself. If this does
+ # not work for you - patches more than welcome.
+ if (
+ ! $DBICTest::global_exclusive_lock
+ and
+ ( ! $ENV{DBICTEST_LOCK_HOLDER} or $ENV{DBICTEST_LOCK_HOLDER} == $$ )
+ and
+ ref($_[0]) ne 'CODE'
+ and
+ ($_[0]||'') !~ /^ (?i:dbi) \: SQLite \: (?: dbname\= )? (?: \:memory\: | t [\/\\] var [\/\\] DBIxClass\-) /x
+ ) {
+
+ my $locktype = do {
+ # guard against infinite recursion
+ local $ENV{DBICTEST_LOCK_HOLDER} = -1;
+
+ # we need to connect a forced fresh clone so that we do not upset any state
+ # of the main $schema (some tests examine it quite closely)
+ local $SIG{__WARN__} = sub {};
+ local $@;
+ my $storage = eval {
+ my $st = ref($self)->connect(@{$self->storage->connect_info})->storage;
+ $st->ensure_connected; # do connect here, to catch a possible throw
+ $st;
+ };
+ $storage
+ ? do {
+ my $t = $storage->sqlt_type || 'generic';
+ eval { $storage->disconnect };
+ $t;
+ }
+ : undef
+ ;
+ };
+
+ # Never hold more than one lock. This solves the "lock in order" issues
+ # unrelated tests may have
+ # Also if there is no connection - there is no lock to be had
+ if ($locktype and (!$locker or $locker->{type} ne $locktype)) {
+
+ # this will release whatever lock we may currently be holding
+ # which is fine since the type does not match as checked above
+ undef $locker;
+
+ my $lockpath = DBICTest::RunMode->tmpdir->file("_dbictest_$locktype.lock");
+
+ #warn "$$ $0 $locktype GRABBING LOCK";
+ my $lock_fh;
+ {
+ my $u = local_umask(0); # so that the file opens as 666, and any user can lock
+ sysopen ($lock_fh, $lockpath, O_RDWR|O_CREAT) or die "Unable to open $lockpath: $!";
+ }
+ flock ($lock_fh, LOCK_EX) or die "Unable to lock $lockpath: $!";
+ #warn "$$ $0 $locktype LOCK GRABBED";
+
+ # see if anyone was holding a lock before us, and wait up to 5 seconds for them to terminate
+ # if we do not do this we may end up trampling over some long-running END or somesuch
+ seek ($lock_fh, 0, SEEK_SET) or die "seek failed $!";
+ my $old_pid;
+ if (
+ read ($lock_fh, $old_pid, 100)
+ and
+ ($old_pid) = $old_pid =~ /^(\d+)$/
+ ) {
+ for (1..50) {
+ kill (0, $old_pid) or last;
+ sleep 0.1;
+ }
+ }
+ #warn "$$ $0 $locktype POST GRAB WAIT";
+
+ truncate $lock_fh, 0;
+ seek ($lock_fh, 0, SEEK_SET) or die "seek failed $!";
+ $lock_fh->autoflush(1);
+ print $lock_fh $$;
+
+ $ENV{DBICTEST_LOCK_HOLDER} ||= $$;
+
+ $locker = {
+ type => $locktype,
+ fh => $lock_fh,
+ lock_name => "$lockpath",
+ };
+ }
+ }
+
+ if ($INC{'Test/Builder.pm'}) {
+ populate_weakregistry ( $weak_registry, $self->storage );
+
+ my $cur_connect_call = $self->storage->on_connect_call;
+
+ $self->storage->on_connect_call([
+ (ref $cur_connect_call eq 'ARRAY'
+ ? @$cur_connect_call
+ : ($cur_connect_call || ())
+ ),
+ [sub {
+ populate_weakregistry( $weak_registry, shift->_dbh )
+ }],
+ ]);
+ }
+
+ return $self;
+}
+
+sub clone {
+ my $self = shift->next::method(@_);
+ populate_weakregistry ( $weak_registry, $self )
+ if $INC{'Test/Builder.pm'};
+ $self;
+}
+
+END {
+ assert_empty_weakregistry($weak_registry, 'quiet');
+}
1;
projects / dbsrgits/DBIx-Class.git / blobdiff