import bt2
from bt2 import native_bt, utils, object
import bt2.stream_class
-import uuid as uuidp
+import bt2.field_class
import collections.abc
import functools
-class _TraceClassEnv(collections.abc.MutableMapping):
- def __init__(self, trace_class):
- self._trace_class = trace_class
-
- def __getitem__(self, key):
- utils._check_str(key)
-
- borrow_entry_fn = native_bt.trace_class_borrow_environment_entry_value_by_name_const
- value_ptr = borrow_entry_fn(self._trace_class._ptr, key)
-
- if value_ptr is None:
- raise KeyError(key)
-
- return bt2.value._create_from_ptr_and_get_ref(value_ptr)
-
- def __setitem__(self, key, value):
- if isinstance(value, str):
- set_env_entry_fn = native_bt.trace_class_set_environment_entry_string
- elif isinstance(value, int):
- set_env_entry_fn = native_bt.trace_class_set_environment_entry_integer
- else:
- raise TypeError('expected str or int, got {}'.format(type(value)))
-
- status = set_env_entry_fn(self._trace_class._ptr, key, value)
- utils._handle_func_status(status,
- "cannot set trace class object's environment entry")
-
- def __delitem__(self, key):
- raise NotImplementedError
-
- def __len__(self):
- count = native_bt.trace_class_get_environment_entry_count(self._trace_class._ptr)
- assert count >= 0
- return count
-
- def __iter__(self):
- trace_class_ptr = self._trace_class_env._trace_class._ptr
-
- for idx in range(len(self)):
- borrow_entry_fn = native_bt.trace_class_borrow_environment_entry_by_index_const
- entry_name, _ = borrow_entry_fn(trace_class_ptr, idx)
- assert entry_name is not None
- yield entry_name
-
-
class _StreamClassIterator(collections.abc.Iterator):
def __init__(self, trace_class):
self._trace_class = trace_class
if self._at == len(self._trace_class):
raise StopIteration
- borrow_stream_class_fn = native_bt.trace_class_borrow_stream_class_by_index_const
+ borrow_stream_class_fn = (
+ native_bt.trace_class_borrow_stream_class_by_index_const
+ )
sc_ptr = borrow_stream_class_fn(self._trace_class._ptr, self._at)
assert sc_ptr
id = native_bt.stream_class_get_id(sc_ptr)
def _trace_class_destruction_listener_from_native(user_listener, trace_class_ptr):
- trace_class = bt2.trace_class._TraceClass._create_from_ptr_and_get_ref(trace_class_ptr)
+ trace_class = bt2.trace_class._TraceClass._create_from_ptr_and_get_ref(
+ trace_class_ptr
+ )
user_listener(trace_class)
_get_ref = staticmethod(native_bt.trace_class_get_ref)
_put_ref = staticmethod(native_bt.trace_class_put_ref)
- @property
- def uuid(self):
- uuid_bytes = native_bt.trace_class_get_uuid(self._ptr)
- if uuid_bytes is None:
- return
-
- return uuidp.UUID(bytes=uuid_bytes)
-
- def _uuid(self, uuid):
- utils._check_type(uuid, uuidp.UUID)
- native_bt.trace_class_set_uuid(self._ptr, uuid.bytes)
-
- _uuid = property(fset=_uuid)
-
# Instantiate a trace of this class.
- def __call__(self, name=None):
+ def __call__(self, name=None, uuid=None, env=None):
trace_ptr = native_bt.trace_create(self._ptr)
if trace_ptr is None:
if name is not None:
trace._name = name
+ if uuid is not None:
+ trace._uuid = uuid
+
+ if env is not None:
+ for key, value in env.items():
+ trace.env[key] = value
+
return trace
# Number of stream classes in this trace class.
def __iter__(self):
for idx in range(len(self)):
- sc_ptr = native_bt.trace_class_borrow_stream_class_by_index_const(self._ptr, idx)
+ sc_ptr = native_bt.trace_class_borrow_stream_class_by_index_const(
+ self._ptr, idx
+ )
assert sc_ptr is not None
id = native_bt.stream_class_get_id(sc_ptr)
yield id
- @property
- def env(self):
- return _TraceClassEnv(self)
-
- def create_stream_class(self, id=None,
- name=None,
- packet_context_field_class=None,
- event_common_context_field_class=None,
- default_clock_class=None,
- assigns_automatic_event_class_id=True,
- assigns_automatic_stream_id=True,
- packets_have_beginning_default_clock_snapshot=False,
- packets_have_end_default_clock_snapshot=False,
- supports_discarded_events=False,
- discarded_events_have_default_clock_snapshots=False,
- supports_discarded_packets=False,
- discarded_packets_have_default_clock_snapshots=False):
+ def create_stream_class(
+ self,
+ id=None,
+ name=None,
+ packet_context_field_class=None,
+ event_common_context_field_class=None,
+ default_clock_class=None,
+ assigns_automatic_event_class_id=True,
+ assigns_automatic_stream_id=True,
+ supports_packets=False,
+ packets_have_beginning_default_clock_snapshot=False,
+ packets_have_end_default_clock_snapshot=False,
+ supports_discarded_events=False,
+ discarded_events_have_default_clock_snapshots=False,
+ supports_discarded_packets=False,
+ discarded_packets_have_default_clock_snapshots=False,
+ ):
if self.assigns_automatic_stream_class_id:
if id is not None:
- raise ValueError('id provided, but trace class assigns automatic stream class ids')
+ raise ValueError(
+ 'id provided, but trace class assigns automatic stream class ids'
+ )
sc_ptr = native_bt.stream_class_create(self._ptr)
else:
if id is None:
- raise ValueError('id not provided, but trace class does not assign automatic stream class ids')
+ raise ValueError(
+ 'id not provided, but trace class does not assign automatic stream class ids'
+ )
utils._check_uint64(id)
sc_ptr = native_bt.stream_class_create_with_id(self._ptr, id)
if name is not None:
sc._name = name
- if packet_context_field_class is not None:
- sc._packet_context_field_class = packet_context_field_class
-
if event_common_context_field_class is not None:
sc._event_common_context_field_class = event_common_context_field_class
if default_clock_class is not None:
sc._default_clock_class = default_clock_class
+ # call after `sc._default_clock_class` because, if
+ # `packets_have_beginning_default_clock_snapshot` or
+ # `packets_have_end_default_clock_snapshot` is true, then this
+ # stream class needs a default clock class already.
+ sc._set_supports_packets(
+ supports_packets,
+ packets_have_beginning_default_clock_snapshot,
+ packets_have_end_default_clock_snapshot,
+ )
+
+ # call after sc._set_supports_packets() because, if
+ # `packet_context_field_class` is not `None`, then this stream
+ # class needs to support packets already.
+ if packet_context_field_class is not None:
+ sc._packet_context_field_class = packet_context_field_class
+
sc._assigns_automatic_event_class_id = assigns_automatic_event_class_id
sc._assigns_automatic_stream_id = assigns_automatic_stream_id
- sc._packets_have_beginning_default_clock_snapshot = packets_have_beginning_default_clock_snapshot
- sc._packets_have_end_default_clock_snapshot = packets_have_end_default_clock_snapshot
- sc._set_supports_discarded_events(supports_discarded_events,
- discarded_events_have_default_clock_snapshots)
- sc._set_supports_discarded_packets(supports_discarded_packets,
- discarded_packets_have_default_clock_snapshots)
+ sc._set_supports_discarded_events(
+ supports_discarded_events, discarded_events_have_default_clock_snapshots
+ )
+ sc._set_supports_discarded_packets(
+ supports_discarded_packets, discarded_packets_have_default_clock_snapshots
+ )
return sc
@property
def _assigns_automatic_stream_class_id(self, auto_id):
utils._check_bool(auto_id)
- return native_bt.trace_class_set_assigns_automatic_stream_class_id(self._ptr, auto_id)
+ return native_bt.trace_class_set_assigns_automatic_stream_class_id(
+ self._ptr, auto_id
+ )
- _assigns_automatic_stream_class_id = property(fset=_assigns_automatic_stream_class_id)
+ _assigns_automatic_stream_class_id = property(
+ fset=_assigns_automatic_stream_class_id
+ )
# Field class creation methods.
def _check_create_status(self, ptr, type_name):
if ptr is None:
- raise bt2.CreationError(
- 'cannot create {} field class'.format(type_name))
+ raise bt2.CreationError('cannot create {} field class'.format(type_name))
- def _create_integer_field_class(self, create_func, py_cls, type_name, field_value_range, preferred_display_base):
+ def _create_integer_field_class(
+ self, create_func, py_cls, type_name, field_value_range, preferred_display_base
+ ):
field_class_ptr = create_func(self._ptr)
self._check_create_status(field_class_ptr, type_name)
return field_class
- def create_signed_integer_field_class(self, field_value_range=None, preferred_display_base=None):
- return self._create_integer_field_class(native_bt.field_class_signed_integer_create,
- bt2.field_class._SignedIntegerFieldClass,
- 'signed integer', field_value_range, preferred_display_base)
-
- def create_unsigned_integer_field_class(self, field_value_range=None, preferred_display_base=None):
- return self._create_integer_field_class(native_bt.field_class_unsigned_integer_create,
- bt2.field_class._UnsignedIntegerFieldClass,
- 'unsigned integer', field_value_range, preferred_display_base)
-
- def create_signed_enumeration_field_class(self, field_value_range=None, preferred_display_base=None):
- return self._create_integer_field_class(native_bt.field_class_signed_enumeration_create,
- bt2.field_class._SignedEnumerationFieldClass,
- 'signed enumeration', field_value_range, preferred_display_base)
-
- def create_unsigned_enumeration_field_class(self, field_value_range=None, preferred_display_base=None):
- return self._create_integer_field_class(native_bt.field_class_unsigned_enumeration_create,
- bt2.field_class._UnsignedEnumerationFieldClass,
- 'unsigned enumeration', field_value_range, preferred_display_base)
+ def create_signed_integer_field_class(
+ self, field_value_range=None, preferred_display_base=None
+ ):
+ return self._create_integer_field_class(
+ native_bt.field_class_integer_signed_create,
+ bt2.field_class._SignedIntegerFieldClass,
+ 'signed integer',
+ field_value_range,
+ preferred_display_base,
+ )
+
+ def create_unsigned_integer_field_class(
+ self, field_value_range=None, preferred_display_base=None
+ ):
+ return self._create_integer_field_class(
+ native_bt.field_class_integer_unsigned_create,
+ bt2.field_class._UnsignedIntegerFieldClass,
+ 'unsigned integer',
+ field_value_range,
+ preferred_display_base,
+ )
+
+ def create_signed_enumeration_field_class(
+ self, field_value_range=None, preferred_display_base=None
+ ):
+ return self._create_integer_field_class(
+ native_bt.field_class_enumeration_signed_create,
+ bt2.field_class._SignedEnumerationFieldClass,
+ 'signed enumeration',
+ field_value_range,
+ preferred_display_base,
+ )
+
+ def create_unsigned_enumeration_field_class(
+ self, field_value_range=None, preferred_display_base=None
+ ):
+ return self._create_integer_field_class(
+ native_bt.field_class_enumeration_unsigned_create,
+ bt2.field_class._UnsignedEnumerationFieldClass,
+ 'unsigned enumeration',
+ field_value_range,
+ preferred_display_base,
+ )
def create_real_field_class(self, is_single_precision=False):
field_class_ptr = native_bt.field_class_real_create(self._ptr)
def create_static_array_field_class(self, elem_fc, length):
utils._check_type(elem_fc, bt2.field_class._FieldClass)
utils._check_uint64(length)
- ptr = native_bt.field_class_static_array_create(self._ptr, elem_fc._ptr, length)
+ ptr = native_bt.field_class_array_static_create(self._ptr, elem_fc._ptr, length)
self._check_create_status(ptr, 'static array')
return bt2.field_class._StaticArrayFieldClass._create_from_ptr_and_get_ref(ptr)
def create_dynamic_array_field_class(self, elem_fc, length_fc=None):
utils._check_type(elem_fc, bt2.field_class._FieldClass)
- ptr = native_bt.field_class_dynamic_array_create(self._ptr, elem_fc._ptr)
- self._check_create_status(ptr, 'dynamic array')
- obj = bt2.field_class._DynamicArrayFieldClass._create_from_ptr(ptr)
+ length_fc_ptr = None
if length_fc is not None:
- obj._length_field_class = length_fc
+ utils._check_type(length_fc, bt2.field_class._UnsignedIntegerFieldClass)
+ length_fc_ptr = length_fc._ptr
- return obj
+ ptr = native_bt.field_class_array_dynamic_create(
+ self._ptr, elem_fc._ptr, length_fc_ptr
+ )
+ self._check_create_status(ptr, 'dynamic array')
+ return bt2.field_class._DynamicArrayFieldClass._create_from_ptr(ptr)
def create_variant_field_class(self, selector_fc=None):
- ptr = native_bt.field_class_variant_create(self._ptr)
- self._check_create_status(ptr, 'variant')
- obj = bt2.field_class._VariantFieldClass._create_from_ptr(ptr)
+ selector_fc_ptr = None
if selector_fc is not None:
- obj._selector_field_class = selector_fc
+ utils._check_type(selector_fc, bt2.field_class._IntegerFieldClass)
+ selector_fc_ptr = selector_fc._ptr
- return obj
+ ptr = native_bt.field_class_variant_create(self._ptr, selector_fc_ptr)
+ self._check_create_status(ptr, 'variant')
+ return bt2.field_class._create_field_class_from_ptr_and_get_ref(ptr)
# Add a listener to be called when the trace class is destroyed.
raise TypeError("'listener' parameter is not callable")
fn = native_bt.bt2_trace_class_add_destruction_listener
- listener_from_native = functools.partial(_trace_class_destruction_listener_from_native,
- listener)
+ listener_from_native = functools.partial(
+ _trace_class_destruction_listener_from_native, listener
+ )
listener_id = fn(self._ptr, listener_from_native)
if listener_id is None:
- utils._raise_bt2_error('cannot add destruction listener to trace class object')
+ utils._raise_bt2_error(
+ 'cannot add destruction listener to trace class object'
+ )
return bt2._ListenerHandle(listener_id, self)
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