+ # Release the reference to the native part.
+ ptr = msg._release()
+ return int(ptr)
+
+ # Validate that the presence or lack of presence of a
+ # `default_clock_snapshot` value is valid in the context of `stream_class`.
+ @staticmethod
+ def _validate_default_clock_snapshot(stream_class, default_clock_snapshot):
+ stream_class_has_default_clock_class = stream_class.default_clock_class is not None
+
+ if stream_class_has_default_clock_class and default_clock_snapshot is None:
+ raise bt2.Error(
+ 'stream class has a default clock class, default_clock_snapshot should not be None')
+
+ if not stream_class_has_default_clock_class and default_clock_snapshot is not None:
+ raise bt2.Error(
+ 'stream class has no default clock class, default_clock_snapshot should be None')
+
+ def _create_event_message(self, event_class, packet, default_clock_snapshot=None):
+ utils._check_type(event_class, bt2.event_class._EventClass)
+ utils._check_type(packet, bt2.packet._Packet)
+ self._validate_default_clock_snapshot(packet.stream.cls, default_clock_snapshot)
+
+ if default_clock_snapshot is not None:
+ utils._check_uint64(default_clock_snapshot)
+ ptr = native_bt.message_event_create_with_default_clock_snapshot(
+ self._ptr, event_class._ptr, packet._ptr, default_clock_snapshot)
+ else:
+ ptr = native_bt.message_event_create(
+ self._ptr, event_class._ptr, packet._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot create event message object')
+
+ return bt2.message._EventMessage(ptr)
+
+ def _create_message_iterator_inactivity_message(self, clock_class, clock_snapshot):
+ utils._check_type(clock_class, bt2.clock_class._ClockClass)
+ ptr = native_bt.message_message_iterator_inactivity_create(
+ self._ptr, clock_class._ptr, clock_snapshot)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot create inactivity message object')
+
+ return bt2.message._MessageIteratorInactivityMessage(ptr)
+
+ def _create_stream_beginning_message(self, stream):
+ utils._check_type(stream, bt2.stream._Stream)
+
+ ptr = native_bt.message_stream_beginning_create(self._ptr, stream._ptr)
+ if ptr is None:
+ raise bt2.CreationError('cannot create stream beginning message object')
+
+ return bt2.message._StreamBeginningMessage(ptr)
+
+ def _create_stream_activity_beginning_message(self, stream, default_clock_snapshot=None):
+ utils._check_type(stream, bt2.stream._Stream)
+ self._validate_default_clock_snapshot(stream.cls, default_clock_snapshot)
+
+ ptr = native_bt.message_stream_activity_beginning_create(self._ptr, stream._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError(
+ 'cannot create stream activity beginning message object')
+
+ msg = bt2.message._StreamActivityBeginningMessage(ptr)
+
+ if default_clock_snapshot is not None:
+ msg._default_clock_snapshot = default_clock_snapshot
+
+ return msg
+
+ def _create_stream_activity_end_message(self, stream, default_clock_snapshot=None):
+ utils._check_type(stream, bt2.stream._Stream)
+ self._validate_default_clock_snapshot(stream.cls, default_clock_snapshot)
+
+ ptr = native_bt.message_stream_activity_end_create(self._ptr, stream._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError(
+ 'cannot create stream activity end message object')
+
+ msg = bt2.message._StreamActivityEndMessage(ptr)
+
+ if default_clock_snapshot is not None:
+ msg._default_clock_snapshot = default_clock_snapshot
+
+ return msg
+
+ def _create_stream_end_message(self, stream):
+ utils._check_type(stream, bt2.stream._Stream)
+
+ ptr = native_bt.message_stream_end_create(self._ptr, stream._ptr)
+ if ptr is None:
+ raise bt2.CreationError('cannot create stream end message object')
+
+ return bt2.message._StreamEndMessage(ptr)
+
+ def _create_packet_beginning_message(self, packet, default_clock_snapshot=None):
+ utils._check_type(packet, bt2.packet._Packet)
+
+ if packet.stream.cls.packets_have_beginning_default_clock_snapshot:
+ if default_clock_snapshot is None:
+ raise ValueError("packet beginning messages in this stream must have a default clock snapshots")
+
+ utils._check_uint64(default_clock_snapshot)
+ ptr = native_bt.message_packet_beginning_create_with_default_clock_snapshot(
+ self._ptr, packet._ptr, default_clock_snapshot)
+ else:
+ if default_clock_snapshot is not None:
+ raise ValueError("packet beginning messages in this stream must not have a default clock snapshots")
+
+ ptr = native_bt.message_packet_beginning_create(self._ptr, packet._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot create packet beginning message object')
+
+ return bt2.message._PacketBeginningMessage(ptr)
+
+ def _create_packet_end_message(self, packet, default_clock_snapshot=None):
+ utils._check_type(packet, bt2.packet._Packet)
+
+ if packet.stream.cls.packets_have_end_default_clock_snapshot:
+ if default_clock_snapshot is None:
+ raise ValueError("packet end messages in this stream must have a default clock snapshots")
+
+ utils._check_uint64(default_clock_snapshot)
+ ptr = native_bt.message_packet_end_create_with_default_clock_snapshot(
+ self._ptr, packet._ptr, default_clock_snapshot)
+ else:
+ if default_clock_snapshot is not None:
+ raise ValueError("packet end messages in this stream must not have a default clock snapshots")
+
+ ptr = native_bt.message_packet_end_create(self._ptr, packet._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot create packet end message object')
+
+ return bt2.message._PacketEndMessage(ptr)
+
+ def _create_discarded_events_message(self, stream, count=None,
+ beg_clock_snapshot=None,
+ end_clock_snapshot=None):
+ utils._check_type(stream, bt2.stream._Stream)
+
+ if not stream.cls.supports_discarded_events:
+ raise ValueError('stream class does not support discarded events')
+
+ if stream.cls.discarded_events_have_default_clock_snapshots:
+ if beg_clock_snapshot is None or end_clock_snapshot is None:
+ raise ValueError('discarded events have default clock snapshots for this stream class')
+
+ utils._check_uint64(beg_clock_snapshot)
+ utils._check_uint64(end_clock_snapshot)
+ ptr = native_bt.message_discarded_events_create_with_default_clock_snapshots(
+ self._ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot)
+ else:
+ if beg_clock_snapshot is not None or end_clock_snapshot is not None:
+ raise ValueError('discarded events have no default clock snapshots for this stream class')
+
+ ptr = native_bt.message_discarded_events_create(
+ self._ptr, stream._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot discarded events message object')
+
+ msg = bt2.message._DiscardedEventsMessage(ptr)
+
+ if count is not None:
+ msg._count = count
+
+ return msg
+
+ def _create_discarded_packets_message(self, stream, count=None, beg_clock_snapshot=None, end_clock_snapshot=None):
+ utils._check_type(stream, bt2.stream._Stream)
+
+ if not stream.cls.supports_discarded_packets:
+ raise ValueError('stream class does not support discarded packets')
+
+ if stream.cls.discarded_packets_have_default_clock_snapshots:
+ if beg_clock_snapshot is None or end_clock_snapshot is None:
+ raise ValueError('discarded packets have default clock snapshots for this stream class')
+
+ utils._check_uint64(beg_clock_snapshot)
+ utils._check_uint64(end_clock_snapshot)
+ ptr = native_bt.message_discarded_packets_create_with_default_clock_snapshots(
+ self._ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot)
+ else:
+ if beg_clock_snapshot is not None or end_clock_snapshot is not None:
+ raise ValueError('discarded packets have no default clock snapshots for this stream class')
+
+ ptr = native_bt.message_discarded_packets_create(
+ self._ptr, stream._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot discarded packets message object')
+
+ msg = bt2.message._DiscardedPacketsMessage(ptr)
+
+ if count is not None:
+ msg._count = count
+
+ return msg
+