X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bindings%2Fpython%2Fbt2%2Fbt2%2Fmessage_iterator.py;h=7f996b007e1ec8353fb3537fd45d0fdd80823c66;hb=68b66a256a54d32992dfefeaad11eea88b7df234;hp=c9176efd3f9ce1c2a087dd0610fc0b42ee4ead39;hpb=2ae9f48c88d9359f2b2bf1cbac3c6dab5a22cfbb;p=babeltrace.git diff --git a/bindings/python/bt2/bt2/message_iterator.py b/bindings/python/bt2/bt2/message_iterator.py index c9176efd..7f996b00 100644 --- a/bindings/python/bt2/bt2/message_iterator.py +++ b/bindings/python/bt2/bt2/message_iterator.py @@ -60,20 +60,28 @@ class _GenericMessageIterator(object._SharedObject, _MessageIterator): return bt2.message._create_from_ptr(msg_ptr) -class _PrivateConnectionMessageIterator(_GenericMessageIterator): - @property - def component(self): - comp_ptr = native_bt.private_connection_message_iterator_get_component(self._ptr) - assert(comp_ptr) - return bt2.component._create_generic_component_from_ptr(comp_ptr) +# This is created when a component wants to iterate on one of its input ports. +class _UserComponentInputPortMessageIterator(_GenericMessageIterator): + _get_msg_range = staticmethod(native_bt.py3_self_component_port_input_get_msg_range) + _get_ref = staticmethod(native_bt.self_component_port_input_message_iterator_get_ref) + _put_ref = staticmethod(native_bt.self_component_port_input_message_iterator_put_ref) +# This is created when the user wants to iterate on a component's output port, +# from outside the graph. class _OutputPortMessageIterator(_GenericMessageIterator): _get_msg_range = staticmethod(native_bt.py3_port_output_get_msg_range) _get_ref = staticmethod(native_bt.port_output_message_iterator_get_ref) _put_ref = staticmethod(native_bt.port_output_message_iterator_put_ref) +# This is extended by the user to implement component classes in Python. It +# is created for a given output port when an input port message iterator is +# created on the input port on the other side of the connection. It is also +# created when an output port message iterator is created on this output port. +# +# Its purpose is to feed the messages that should go out through this output +# port. class _UserMessageIterator(_MessageIterator): def __new__(cls, ptr): # User iterator objects are always created by the native side, @@ -90,7 +98,12 @@ class _UserMessageIterator(_MessageIterator): self._ptr = ptr return self - def __init__(self): + def _init_from_native(self, self_output_port_ptr): + self_output_port = bt2.port._create_self_from_ptr_and_get_ref( + self_output_port_ptr, native_bt.PORT_TYPE_OUTPUT) + self.__init__(self_output_port) + + def __init__(self, output_port): pass @property @@ -137,9 +150,9 @@ class _UserMessageIterator(_MessageIterator): '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(event_class, bt2.event_class._EventClass) utils._check_type(packet, bt2.packet._Packet) - self._validate_default_clock_snapshot(packet.stream.stream_class, default_clock_snapshot) + self._validate_default_clock_snapshot(packet.stream.cls, default_clock_snapshot) if default_clock_snapshot is not None: utils._check_uint64(default_clock_snapshot) @@ -154,6 +167,16 @@ class _UserMessageIterator(_MessageIterator): 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) @@ -163,19 +186,62 @@ class _UserMessageIterator(_MessageIterator): 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.stream_class.packets_have_default_beginning_clock_snapshot: + if packet.stream.cls.packets_have_beginning_default_clock_snapshot: if default_clock_snapshot is None: - raise bt2.CreationError("packet beginning messages in this stream must have a default clock snapshots") + 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 bt2.CreationError("packet beginning messages in this stream must not have a default clock snapshots") + 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) @@ -183,3 +249,89 @@ class _UserMessageIterator(_MessageIterator): 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 +