| 1 | # The MIT License (MIT) |
| 2 | # |
| 3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> |
| 4 | # |
| 5 | # Permission is hereby granted, free of charge, to any person obtaining a copy |
| 6 | # of this software and associated documentation files (the "Software"), to deal |
| 7 | # in the Software without restriction, including without limitation the rights |
| 8 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 9 | # copies of the Software, and to permit persons to whom the Software is |
| 10 | # furnished to do so, subject to the following conditions: |
| 11 | # |
| 12 | # The above copyright notice and this permission notice shall be included in |
| 13 | # all copies or substantial portions of the Software. |
| 14 | # |
| 15 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 21 | # THE SOFTWARE. |
| 22 | |
| 23 | from bt2 import native_bt, object, utils |
| 24 | import bt2.field_class |
| 25 | import collections.abc |
| 26 | import bt2.value |
| 27 | import bt2.stream |
| 28 | import bt2 |
| 29 | import functools |
| 30 | |
| 31 | |
| 32 | def _trace_destruction_listener_from_native(user_listener, trace_ptr): |
| 33 | trace = bt2.trace.Trace._create_from_ptr_and_get_ref(trace_ptr) |
| 34 | user_listener(trace) |
| 35 | |
| 36 | |
| 37 | class Trace(object._SharedObject, collections.abc.Mapping): |
| 38 | _get_ref = staticmethod(native_bt.trace_get_ref) |
| 39 | _put_ref = staticmethod(native_bt.trace_put_ref) |
| 40 | |
| 41 | def __len__(self): |
| 42 | count = native_bt.trace_get_stream_count(self._ptr) |
| 43 | assert count >= 0 |
| 44 | return count |
| 45 | |
| 46 | def __getitem__(self, id): |
| 47 | utils._check_uint64(id) |
| 48 | |
| 49 | stream_ptr = native_bt.trace_borrow_stream_by_id_const(self._ptr, id) |
| 50 | |
| 51 | if stream_ptr is None: |
| 52 | raise KeyError(id) |
| 53 | |
| 54 | return bt2.stream._Stream._create_from_ptr_and_get_ref(stream_ptr) |
| 55 | |
| 56 | def __iter__(self): |
| 57 | for idx in range(len(self)): |
| 58 | stream_ptr = native_bt.trace_borrow_stream_by_index_const(self._ptr, idx) |
| 59 | assert stream_ptr is not None |
| 60 | |
| 61 | id = native_bt.stream_get_id(stream_ptr) |
| 62 | assert id >= 0 |
| 63 | |
| 64 | yield id |
| 65 | |
| 66 | @property |
| 67 | def name(self): |
| 68 | return native_bt.trace_get_name(self._ptr) |
| 69 | |
| 70 | def _name(self, name): |
| 71 | utils._check_str(name) |
| 72 | ret = native_bt.trace_set_name(self._ptr, name) |
| 73 | utils._handle_ret(ret, "cannot set trace class object's name") |
| 74 | |
| 75 | _name = property(fset=_name) |
| 76 | |
| 77 | def create_stream(self, stream_class, id=None, name=None): |
| 78 | utils._check_type(stream_class, bt2.stream_class.StreamClass) |
| 79 | |
| 80 | if stream_class.assigns_automatic_stream_id: |
| 81 | if id is not None: |
| 82 | raise ValueError("id provided, but stream class assigns automatic stream ids") |
| 83 | |
| 84 | stream_ptr = native_bt.stream_create(stream_class._ptr, self._ptr) |
| 85 | else: |
| 86 | if id is None: |
| 87 | raise ValueError("id not provided, but stream class does not assign automatic stream ids") |
| 88 | |
| 89 | utils._check_uint64(id) |
| 90 | stream_ptr = native_bt.stream_create_with_id(stream_class._ptr, self._ptr, id) |
| 91 | |
| 92 | if stream_ptr is None: |
| 93 | raise bt2.CreationError('cannot create stream object') |
| 94 | |
| 95 | stream = bt2.stream._Stream._create_from_ptr(stream_ptr) |
| 96 | |
| 97 | if name is not None: |
| 98 | stream._name = name |
| 99 | |
| 100 | return stream |
| 101 | |
| 102 | def add_destruction_listener(self, listener): |
| 103 | '''Add a listener to be called when the trace is destroyed.''' |
| 104 | if not callable(listener): |
| 105 | raise TypeError("'listener' parameter is not callable") |
| 106 | |
| 107 | fn = native_bt.py3_trace_add_destruction_listener |
| 108 | listener_from_native = functools.partial(_trace_destruction_listener_from_native, |
| 109 | listener) |
| 110 | |
| 111 | listener_id = fn(self._ptr, listener_from_native) |
| 112 | if listener_id is None: |
| 113 | utils._raise_bt2_error('cannot add destruction listener to trace object') |
| 114 | |
| 115 | return bt2._ListenerHandle(listener_id, self) |