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5fa16feb PP |
1 | /* |
2 | * The MIT License (MIT) | |
3 | * | |
4 | * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include "logging/comp-logging.h" | |
26 | ||
27 | /* | |
28 | * This hash table associates a BT component class object address to a | |
29 | * user-defined Python class (PyObject *). The keys and values are NOT | |
30 | * owned by this hash table. The Python class objects are owned by the | |
31 | * Python module, which should not be unloaded until it is not possible | |
32 | * to create a user Python component anyway. | |
33 | * | |
34 | * This hash table is written to when a user-defined Python component | |
35 | * class is created by one of the bt_bt2_component_class_*_create() | |
36 | * functions. | |
37 | * | |
38 | * This function is read from when a user calls bt_component_create() | |
39 | * with a component class pointer created by one of the functions above. | |
40 | * In this case, the original Python class needs to be found to | |
41 | * instantiate it and associate the created Python component object with | |
42 | * a BT component object instance. | |
43 | */ | |
44 | ||
45 | static GHashTable *bt_cc_ptr_to_py_cls; | |
46 | ||
774b7f28 PP |
47 | static |
48 | void bt_bt2_unregister_cc_ptr_to_py_cls(const bt_component_class *comp_cls) | |
49 | { | |
50 | gboolean existed; | |
51 | ||
52 | if (!bt_cc_ptr_to_py_cls) { | |
53 | return; | |
54 | } | |
55 | ||
56 | existed = g_hash_table_remove(bt_cc_ptr_to_py_cls, comp_cls); | |
57 | BT_ASSERT(existed); | |
58 | } | |
59 | ||
5fa16feb PP |
60 | static |
61 | void register_cc_ptr_to_py_cls(struct bt_component_class *bt_cc, | |
62 | PyObject *py_cls) | |
63 | { | |
64 | if (!bt_cc_ptr_to_py_cls) { | |
65 | /* | |
66 | * Lazy-initializing this GHashTable because GLib | |
67 | * might not be initialized yet and it needs to be | |
68 | * before we call g_hash_table_new() | |
69 | */ | |
70 | BT_LOGD_STR("Creating native component class to Python component class hash table."); | |
71 | bt_cc_ptr_to_py_cls = g_hash_table_new(g_direct_hash, g_direct_equal); | |
72 | BT_ASSERT(bt_cc_ptr_to_py_cls); | |
73 | } | |
74 | ||
75 | g_hash_table_insert(bt_cc_ptr_to_py_cls, (gpointer) bt_cc, | |
76 | (gpointer) py_cls); | |
77 | } | |
78 | ||
79 | static | |
80 | PyObject *lookup_cc_ptr_to_py_cls(const bt_component_class *bt_cc) | |
81 | { | |
82 | if (!bt_cc_ptr_to_py_cls) { | |
83 | BT_LOGW("Cannot look up Python component class because hash table is NULL: " | |
84 | "comp-cls-addr=%p", bt_cc); | |
85 | return NULL; | |
86 | } | |
87 | ||
88 | return (PyObject *) g_hash_table_lookup(bt_cc_ptr_to_py_cls, | |
89 | (gconstpointer) bt_cc); | |
90 | } | |
91 | ||
5fa16feb PP |
92 | /* Library destructor */ |
93 | ||
94 | __attribute__((destructor)) | |
95 | static | |
96 | void native_comp_class_dtor(void) { | |
97 | /* Destroy component class association hash table */ | |
98 | if (bt_cc_ptr_to_py_cls) { | |
99 | BT_LOGD_STR("Destroying native component class to Python component class hash table."); | |
100 | g_hash_table_destroy(bt_cc_ptr_to_py_cls); | |
774b7f28 | 101 | bt_cc_ptr_to_py_cls = NULL; |
5fa16feb PP |
102 | } |
103 | } | |
104 | ||
5fa16feb PP |
105 | static inline |
106 | int py_exc_to_status(bt_self_component_class *self_component_class, | |
107 | bt_self_component *self_component, | |
108 | bt_self_message_iterator *self_message_iterator, | |
109 | const char *module_name, int active_log_level) | |
110 | { | |
111 | int status = __BT_FUNC_STATUS_OK; | |
112 | PyObject *exc = PyErr_Occurred(); | |
113 | ||
114 | if (!exc) { | |
115 | goto end; | |
116 | } | |
117 | ||
118 | if (PyErr_GivenExceptionMatches(exc, | |
119 | py_mod_bt2_exc_try_again_type)) { | |
120 | status = __BT_FUNC_STATUS_AGAIN; | |
121 | } else if (PyErr_GivenExceptionMatches(exc, | |
122 | py_mod_bt2_exc_stop_type)) { | |
123 | status = __BT_FUNC_STATUS_END; | |
124 | } else if (PyErr_GivenExceptionMatches(exc, | |
125 | py_mod_bt2_exc_unknown_object_type)) { | |
126 | status = __BT_FUNC_STATUS_UNKNOWN_OBJECT; | |
127 | } else { | |
128 | /* | |
129 | * Unknown exception: convert to general error. | |
130 | * | |
131 | * Because we only want to fetch the log level when | |
132 | * we actually get an exception, and not systematically | |
133 | * when we call py_exc_to_status() (as py_exc_to_status() | |
134 | * can return `__BT_FUNC_STATUS_OK`), we get it here | |
135 | * depending on the actor's type. | |
136 | */ | |
137 | if (self_component) { | |
138 | active_log_level = get_self_component_log_level( | |
139 | self_component); | |
140 | } else if (self_message_iterator) { | |
141 | active_log_level = get_self_message_iterator_log_level( | |
142 | self_message_iterator); | |
143 | } | |
144 | ||
145 | BT_ASSERT(active_log_level != -1); | |
146 | log_exception_and_maybe_append_error(BT_LOG_WARNING, | |
147 | active_log_level, true, | |
148 | self_component_class, self_component, | |
149 | self_message_iterator, module_name); | |
150 | ||
151 | if (PyErr_GivenExceptionMatches(exc, | |
152 | py_mod_bt2_exc_memory_error)) { | |
153 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
154 | } else { | |
155 | status = __BT_FUNC_STATUS_ERROR; | |
156 | } | |
157 | } | |
158 | ||
159 | end: | |
160 | PyErr_Clear(); | |
161 | return status; | |
162 | } | |
163 | ||
164 | static | |
165 | int py_exc_to_status_component_class( | |
166 | bt_self_component_class *self_component_class, | |
167 | int active_log_level) | |
168 | { | |
169 | return py_exc_to_status(self_component_class, NULL, NULL, NULL, | |
170 | active_log_level); | |
171 | } | |
172 | ||
173 | static | |
174 | int py_exc_to_status_component(bt_self_component *self_component) | |
175 | { | |
176 | return py_exc_to_status(NULL, self_component, NULL, NULL, -1); | |
177 | } | |
178 | ||
179 | static | |
180 | int py_exc_to_status_message_iterator( | |
181 | bt_self_message_iterator *self_message_iterator) | |
182 | { | |
183 | return py_exc_to_status(NULL, NULL, self_message_iterator, NULL, -1); | |
184 | } | |
185 | ||
186 | /* Component class proxy methods (delegate to the attached Python object) */ | |
187 | ||
188 | static | |
189 | bt_component_class_init_method_status component_class_init( | |
190 | bt_self_component *self_component, | |
191 | void *self_component_v, | |
192 | swig_type_info *self_comp_cls_type_swig_type, | |
193 | const bt_value *params, | |
194 | void *init_method_data) | |
195 | { | |
196 | const bt_component *component = bt_self_component_as_component(self_component); | |
197 | const bt_component_class *component_class = bt_component_borrow_class_const(component); | |
198 | bt_component_class_init_method_status status = __BT_FUNC_STATUS_OK; | |
199 | PyObject *py_cls = NULL; | |
200 | PyObject *py_comp = NULL; | |
201 | PyObject *py_params_ptr = NULL; | |
202 | PyObject *py_comp_ptr = NULL; | |
203 | bt_logging_level log_level = get_self_component_log_level( | |
204 | self_component); | |
205 | ||
206 | (void) init_method_data; | |
207 | ||
208 | BT_ASSERT(self_component); | |
209 | BT_ASSERT(self_component_v); | |
210 | BT_ASSERT(self_comp_cls_type_swig_type); | |
211 | ||
212 | /* | |
213 | * Get the user-defined Python class which created this | |
214 | * component's class in the first place (borrowed | |
215 | * reference). | |
216 | */ | |
217 | py_cls = lookup_cc_ptr_to_py_cls(component_class); | |
218 | if (!py_cls) { | |
219 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
220 | "Cannot find Python class associated to native component class: " | |
221 | "comp-cls-addr=%p", component_class); | |
222 | goto error; | |
223 | } | |
224 | ||
225 | /* Parameters pointer -> SWIG pointer Python object */ | |
226 | py_params_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(params), | |
227 | SWIGTYPE_p_bt_value, 0); | |
228 | if (!py_params_ptr) { | |
229 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
230 | "Failed to create a SWIG pointer object."); | |
231 | goto error; | |
232 | } | |
233 | ||
234 | py_comp_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(self_component_v), | |
235 | self_comp_cls_type_swig_type, 0); | |
236 | if (!py_comp_ptr) { | |
237 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
238 | "Failed to create a SWIG pointer object."); | |
239 | goto error; | |
240 | } | |
241 | ||
242 | /* | |
243 | * Do the equivalent of this: | |
244 | * | |
245 | * py_comp = py_cls._bt_init_from_native(py_comp_ptr, py_params_ptr) | |
246 | * | |
247 | * _UserComponentType._bt_init_from_native() calls the Python | |
248 | * component object's __init__() function. | |
249 | */ | |
250 | py_comp = PyObject_CallMethod(py_cls, | |
251 | "_bt_init_from_native", "(OO)", py_comp_ptr, py_params_ptr); | |
252 | if (!py_comp) { | |
253 | BT_COMP_LOG_CUR_LVL(BT_LOG_WARNING, log_level, self_component, | |
254 | "Failed to call Python class's _bt_init_from_native() method: " | |
255 | "py-cls-addr=%p", py_cls); | |
256 | status = py_exc_to_status_component(self_component); | |
257 | goto end; | |
258 | } | |
259 | ||
260 | /* | |
261 | * Our user Python component object is now fully created and | |
262 | * initialized by the user. Since we just created it, this | |
263 | * native component is its only (persistent) owner. | |
264 | */ | |
265 | bt_self_component_set_data(self_component, py_comp); | |
266 | py_comp = NULL; | |
267 | goto end; | |
268 | ||
269 | error: | |
270 | status = __BT_FUNC_STATUS_ERROR; | |
271 | ||
272 | /* | |
273 | * Clear any exception: we're returning a bad status anyway. If | |
274 | * this call originated from Python (creation from a plugin's | |
275 | * component class, for example), then the user gets an | |
276 | * appropriate creation error. | |
277 | */ | |
278 | PyErr_Clear(); | |
279 | ||
280 | end: | |
281 | Py_XDECREF(py_comp); | |
282 | Py_XDECREF(py_params_ptr); | |
283 | Py_XDECREF(py_comp_ptr); | |
284 | return status; | |
285 | } | |
286 | ||
287 | /* | |
288 | * Method of bt_component_class_source to initialize a bt_self_component_source | |
289 | * of that class. | |
290 | */ | |
291 | ||
292 | static | |
293 | bt_component_class_init_method_status component_class_source_init( | |
294 | bt_self_component_source *self_component_source, | |
295 | const bt_value *params, void *init_method_data) | |
296 | { | |
297 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
298 | return component_class_init( | |
299 | self_component, | |
300 | self_component_source, | |
301 | SWIGTYPE_p_bt_self_component_source, | |
302 | params, init_method_data); | |
303 | } | |
304 | ||
305 | static | |
306 | bt_component_class_init_method_status component_class_filter_init( | |
307 | bt_self_component_filter *self_component_filter, | |
308 | const bt_value *params, void *init_method_data) | |
309 | { | |
310 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
311 | return component_class_init( | |
312 | self_component, | |
313 | self_component_filter, | |
314 | SWIGTYPE_p_bt_self_component_filter, | |
315 | params, init_method_data); | |
316 | } | |
317 | ||
318 | static | |
319 | bt_component_class_init_method_status component_class_sink_init( | |
320 | bt_self_component_sink *self_component_sink, | |
321 | const bt_value *params, void *init_method_data) | |
322 | { | |
323 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
324 | return component_class_init( | |
325 | self_component, | |
326 | self_component_sink, | |
327 | SWIGTYPE_p_bt_self_component_sink, | |
328 | params, init_method_data); | |
329 | } | |
330 | ||
331 | static | |
332 | void component_class_finalize(bt_self_component *self_component) | |
333 | { | |
334 | PyObject *py_comp = bt_self_component_get_data(self_component); | |
335 | BT_ASSERT(py_comp); | |
336 | ||
337 | /* Call user's _user_finalize() method */ | |
338 | PyObject *py_method_result = PyObject_CallMethod(py_comp, | |
339 | "_user_finalize", NULL); | |
340 | ||
341 | if (PyErr_Occurred()) { | |
342 | bt_logging_level log_level = get_self_component_log_level( | |
343 | self_component); | |
344 | ||
345 | BT_COMP_LOG_CUR_LVL(BT_LOG_WARNING, log_level, self_component, | |
346 | "User component's _user_finalize() method raised an exception: ignoring:"); | |
347 | logw_exception(log_level); | |
348 | } | |
349 | ||
350 | /* | |
351 | * Ignore any exception raised by the _user_finalize() method | |
352 | * because it won't change anything at this point: the component | |
353 | * is being destroyed anyway. | |
354 | */ | |
355 | PyErr_Clear(); | |
356 | Py_XDECREF(py_method_result); | |
357 | Py_DECREF(py_comp); | |
358 | } | |
359 | ||
360 | static | |
361 | void component_class_source_finalize(bt_self_component_source *self_component_source) | |
362 | { | |
363 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
364 | component_class_finalize(self_component); | |
365 | } | |
366 | ||
367 | static | |
368 | void component_class_filter_finalize(bt_self_component_filter *self_component_filter) | |
369 | { | |
370 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
371 | component_class_finalize(self_component); | |
372 | } | |
373 | ||
374 | static | |
375 | void component_class_sink_finalize(bt_self_component_sink *self_component_sink) | |
376 | { | |
377 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
378 | component_class_finalize(self_component); | |
379 | } | |
380 | ||
381 | static | |
382 | bt_bool component_class_can_seek_beginning( | |
383 | bt_self_message_iterator *self_message_iterator) | |
384 | { | |
385 | PyObject *py_iter; | |
386 | PyObject *py_result = NULL; | |
387 | bt_bool can_seek_beginning = false; | |
388 | ||
389 | py_iter = bt_self_message_iterator_get_data(self_message_iterator); | |
390 | BT_ASSERT(py_iter); | |
391 | ||
392 | py_result = PyObject_GetAttrString(py_iter, "_bt_can_seek_beginning_from_native"); | |
393 | ||
394 | BT_ASSERT(!py_result || PyBool_Check(py_result)); | |
395 | ||
396 | if (py_result) { | |
397 | can_seek_beginning = PyObject_IsTrue(py_result); | |
398 | } else { | |
399 | /* | |
400 | * Once can_seek_beginning can report errors, convert the | |
401 | * exception to a status. For now, log and return false; | |
402 | */ | |
403 | loge_exception_message_iterator(self_message_iterator); | |
404 | PyErr_Clear(); | |
405 | } | |
406 | ||
407 | Py_XDECREF(py_result); | |
408 | ||
409 | return can_seek_beginning; | |
410 | } | |
411 | ||
412 | static | |
413 | bt_component_class_message_iterator_seek_beginning_method_status | |
414 | component_class_seek_beginning(bt_self_message_iterator *self_message_iterator) | |
415 | { | |
416 | PyObject *py_iter; | |
417 | PyObject *py_result; | |
418 | bt_component_class_message_iterator_seek_beginning_method_status status; | |
419 | ||
420 | py_iter = bt_self_message_iterator_get_data(self_message_iterator); | |
421 | BT_ASSERT(py_iter); | |
422 | py_result = PyObject_CallMethod(py_iter, "_bt_seek_beginning_from_native", | |
423 | NULL); | |
424 | BT_ASSERT(!py_result || py_result == Py_None); | |
425 | status = py_exc_to_status_message_iterator(self_message_iterator); | |
426 | Py_XDECREF(py_result); | |
427 | return status; | |
428 | } | |
429 | ||
430 | static | |
431 | bt_component_class_port_connected_method_status component_class_port_connected( | |
432 | bt_self_component *self_component, | |
433 | void *self_component_port, | |
434 | swig_type_info *self_component_port_swig_type, | |
435 | bt_port_type self_component_port_type, | |
436 | const void *other_port, | |
437 | swig_type_info *other_port_swig_type) | |
438 | { | |
439 | bt_component_class_port_connected_method_status status; | |
440 | PyObject *py_comp = NULL; | |
441 | PyObject *py_self_port_ptr = NULL; | |
442 | PyObject *py_other_port_ptr = NULL; | |
443 | PyObject *py_method_result = NULL; | |
444 | bt_logging_level log_level = get_self_component_log_level( | |
445 | self_component); | |
446 | ||
447 | py_comp = bt_self_component_get_data(self_component); | |
448 | BT_ASSERT(py_comp); | |
449 | py_self_port_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(self_component_port), | |
450 | self_component_port_swig_type, 0); | |
451 | if (!py_self_port_ptr) { | |
452 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
453 | "Failed to create a SWIG pointer object."); | |
454 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
455 | goto end; | |
456 | } | |
457 | ||
458 | py_other_port_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(other_port), | |
459 | other_port_swig_type, 0); | |
460 | if (!py_other_port_ptr) { | |
461 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
462 | "Failed to create a SWIG pointer object."); | |
463 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
464 | goto end; } | |
465 | ||
466 | py_method_result = PyObject_CallMethod(py_comp, | |
467 | "_bt_port_connected_from_native", "(OiO)", py_self_port_ptr, | |
468 | self_component_port_type, py_other_port_ptr); | |
469 | BT_ASSERT(!py_method_result || py_method_result == Py_None); | |
470 | status = py_exc_to_status_component(self_component); | |
471 | ||
472 | end: | |
473 | Py_XDECREF(py_self_port_ptr); | |
474 | Py_XDECREF(py_other_port_ptr); | |
475 | Py_XDECREF(py_method_result); | |
476 | return status; | |
477 | } | |
478 | ||
479 | static | |
480 | bt_component_class_port_connected_method_status | |
481 | component_class_source_output_port_connected( | |
482 | bt_self_component_source *self_component_source, | |
483 | bt_self_component_port_output *self_component_port_output, | |
484 | const bt_port_input *other_port_input) | |
485 | { | |
486 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
487 | ||
488 | return component_class_port_connected( | |
489 | self_component, | |
490 | self_component_port_output, | |
491 | SWIGTYPE_p_bt_self_component_port_output, | |
492 | BT_PORT_TYPE_OUTPUT, | |
493 | other_port_input, | |
494 | SWIGTYPE_p_bt_port_input); | |
495 | } | |
496 | ||
497 | static | |
498 | bt_component_class_port_connected_method_status | |
499 | component_class_filter_input_port_connected( | |
500 | bt_self_component_filter *self_component_filter, | |
501 | bt_self_component_port_input *self_component_port_input, | |
502 | const bt_port_output *other_port_output) | |
503 | { | |
504 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
505 | ||
506 | return component_class_port_connected( | |
507 | self_component, | |
508 | self_component_port_input, | |
509 | SWIGTYPE_p_bt_self_component_port_input, | |
510 | BT_PORT_TYPE_INPUT, | |
511 | other_port_output, | |
512 | SWIGTYPE_p_bt_port_output); | |
513 | } | |
514 | ||
515 | static | |
516 | bt_component_class_port_connected_method_status | |
517 | component_class_filter_output_port_connected( | |
518 | bt_self_component_filter *self_component_filter, | |
519 | bt_self_component_port_output *self_component_port_output, | |
520 | const bt_port_input *other_port_input) | |
521 | { | |
522 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
523 | ||
524 | return component_class_port_connected( | |
525 | self_component, | |
526 | self_component_port_output, | |
527 | SWIGTYPE_p_bt_self_component_port_output, | |
528 | BT_PORT_TYPE_OUTPUT, | |
529 | other_port_input, | |
530 | SWIGTYPE_p_bt_port_input); | |
531 | } | |
532 | ||
533 | static | |
534 | bt_component_class_port_connected_method_status | |
535 | component_class_sink_input_port_connected( | |
536 | bt_self_component_sink *self_component_sink, | |
537 | bt_self_component_port_input *self_component_port_input, | |
538 | const bt_port_output *other_port_output) | |
539 | { | |
540 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
541 | ||
542 | return component_class_port_connected( | |
543 | self_component, | |
544 | self_component_port_input, | |
545 | SWIGTYPE_p_bt_self_component_port_input, | |
546 | BT_PORT_TYPE_INPUT, | |
547 | other_port_output, | |
548 | SWIGTYPE_p_bt_port_output); | |
549 | } | |
550 | ||
551 | static | |
552 | bt_component_class_sink_graph_is_configured_method_status | |
553 | component_class_sink_graph_is_configured( | |
554 | bt_self_component_sink *self_component_sink) | |
555 | { | |
556 | PyObject *py_comp = NULL; | |
557 | PyObject *py_method_result = NULL; | |
558 | bt_component_class_sink_graph_is_configured_method_status status = __BT_FUNC_STATUS_OK; | |
559 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
560 | ||
561 | py_comp = bt_self_component_get_data(self_component); | |
562 | py_method_result = PyObject_CallMethod(py_comp, | |
563 | "_bt_graph_is_configured_from_native", NULL); | |
564 | BT_ASSERT(!py_method_result || py_method_result == Py_None); | |
565 | status = py_exc_to_status_component(self_component); | |
566 | Py_XDECREF(py_method_result); | |
567 | return status; | |
568 | } | |
569 | ||
570 | static | |
571 | bt_component_class_query_method_status component_class_query( | |
572 | const bt_component_class *component_class, | |
573 | bt_self_component_class *self_component_class, | |
574 | bt_private_query_executor *priv_query_executor, | |
575 | const char *object, const bt_value *params, | |
576 | const bt_value **result) | |
577 | { | |
578 | PyObject *py_cls = NULL; | |
579 | PyObject *py_params_ptr = NULL; | |
580 | PyObject *py_priv_query_exec_ptr = NULL; | |
581 | PyObject *py_query_func = NULL; | |
582 | PyObject *py_object = NULL; | |
583 | PyObject *py_results_addr = NULL; | |
584 | bt_component_class_query_method_status status = __BT_FUNC_STATUS_OK; | |
585 | const bt_query_executor *query_exec = | |
586 | bt_private_query_executor_as_query_executor_const( | |
587 | priv_query_executor); | |
588 | bt_logging_level log_level = | |
589 | bt_query_executor_get_logging_level(query_exec); | |
590 | ||
591 | py_cls = lookup_cc_ptr_to_py_cls(component_class); | |
592 | if (!py_cls) { | |
593 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
594 | "Cannot find Python class associated to native component class: " | |
595 | "comp-cls-addr=%p", component_class); | |
596 | goto error; | |
597 | } | |
598 | ||
599 | py_params_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(params), | |
600 | SWIGTYPE_p_bt_value, 0); | |
601 | if (!py_params_ptr) { | |
602 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
603 | "Failed to create a SWIG pointer object."); | |
604 | goto error; | |
605 | } | |
606 | ||
607 | py_priv_query_exec_ptr = SWIG_NewPointerObj( | |
608 | SWIG_as_voidptr(priv_query_executor), | |
609 | SWIGTYPE_p_bt_private_query_executor, 0); | |
610 | if (!py_priv_query_exec_ptr) { | |
611 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
612 | "Failed to create a SWIG pointer object."); | |
613 | goto error; | |
614 | } | |
615 | ||
616 | py_object = SWIG_FromCharPtr(object); | |
617 | if (!py_object) { | |
618 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
619 | "Failed to create a Python string."); | |
620 | goto error; | |
621 | } | |
622 | ||
623 | py_results_addr = PyObject_CallMethod(py_cls, | |
624 | "_bt_query_from_native", "(OOO)", py_priv_query_exec_ptr, | |
625 | py_object, py_params_ptr); | |
626 | if (!py_results_addr) { | |
627 | BT_LOG_WRITE_CUR_LVL(BT_LOG_WARNING, log_level, BT_LOG_TAG, | |
628 | "Failed to call Python class's _bt_query_from_native() method: " | |
629 | "py-cls-addr=%p", py_cls); | |
630 | status = py_exc_to_status_component_class(self_component_class, | |
631 | log_level); | |
632 | goto end; | |
633 | } | |
634 | ||
635 | /* | |
636 | * The returned object, on success, is an integer object | |
637 | * (PyLong) containing the address of a BT value object (new | |
638 | * reference). | |
639 | */ | |
640 | *result = PyLong_AsVoidPtr(py_results_addr); | |
641 | BT_ASSERT(!PyErr_Occurred()); | |
642 | BT_ASSERT(*result); | |
643 | goto end; | |
644 | ||
645 | error: | |
646 | PyErr_Clear(); | |
647 | status = __BT_FUNC_STATUS_ERROR; | |
648 | ||
649 | end: | |
650 | Py_XDECREF(py_params_ptr); | |
651 | Py_XDECREF(py_priv_query_exec_ptr); | |
652 | Py_XDECREF(py_query_func); | |
653 | Py_XDECREF(py_object); | |
654 | Py_XDECREF(py_results_addr); | |
655 | return status; | |
656 | } | |
657 | ||
658 | static | |
659 | bt_component_class_query_method_status component_class_source_query( | |
660 | bt_self_component_class_source *self_component_class_source, | |
661 | bt_private_query_executor *priv_query_executor, | |
662 | const char *object, const bt_value *params, | |
663 | const bt_value **result) | |
664 | { | |
665 | const bt_component_class_source *component_class_source = bt_self_component_class_source_as_component_class_source(self_component_class_source); | |
666 | const bt_component_class *component_class = bt_component_class_source_as_component_class_const(component_class_source); | |
667 | bt_self_component_class *self_component_class = bt_self_component_class_source_as_self_component_class(self_component_class_source); | |
668 | ||
669 | return component_class_query(component_class, self_component_class, | |
670 | priv_query_executor, object, params, result); | |
671 | } | |
672 | ||
673 | static | |
674 | bt_component_class_query_method_status component_class_filter_query( | |
675 | bt_self_component_class_filter *self_component_class_filter, | |
676 | bt_private_query_executor *priv_query_executor, | |
677 | const char *object, const bt_value *params, | |
678 | const bt_value **result) | |
679 | { | |
680 | const bt_component_class_filter *component_class_filter = bt_self_component_class_filter_as_component_class_filter(self_component_class_filter); | |
681 | const bt_component_class *component_class = bt_component_class_filter_as_component_class_const(component_class_filter); | |
682 | bt_self_component_class *self_component_class = bt_self_component_class_filter_as_self_component_class(self_component_class_filter); | |
683 | ||
684 | return component_class_query(component_class, self_component_class, | |
685 | priv_query_executor, object, params, result); | |
686 | } | |
687 | ||
688 | static | |
689 | bt_component_class_query_method_status component_class_sink_query( | |
690 | bt_self_component_class_sink *self_component_class_sink, | |
691 | bt_private_query_executor *priv_query_executor, | |
692 | const char *object, const bt_value *params, | |
693 | const bt_value **result) | |
694 | { | |
695 | const bt_component_class_sink *component_class_sink = bt_self_component_class_sink_as_component_class_sink(self_component_class_sink); | |
696 | const bt_component_class *component_class = bt_component_class_sink_as_component_class_const(component_class_sink); | |
697 | bt_self_component_class *self_component_class = bt_self_component_class_sink_as_self_component_class(self_component_class_sink); | |
698 | ||
699 | return component_class_query(component_class, self_component_class, | |
700 | priv_query_executor, object, params, result); | |
701 | } | |
702 | ||
703 | static | |
704 | bt_component_class_message_iterator_init_method_status | |
705 | component_class_message_iterator_init( | |
706 | bt_self_message_iterator *self_message_iterator, | |
707 | bt_self_component *self_component, | |
708 | bt_self_component_port_output *self_component_port_output) | |
709 | { | |
710 | bt_component_class_message_iterator_init_method_status status = __BT_FUNC_STATUS_OK; | |
711 | PyObject *py_comp_cls = NULL; | |
712 | PyObject *py_iter_cls = NULL; | |
713 | PyObject *py_iter_ptr = NULL; | |
714 | PyObject *py_component_port_output_ptr = NULL; | |
715 | PyObject *py_init_method_result = NULL; | |
716 | PyObject *py_iter = NULL; | |
717 | PyObject *py_comp; | |
718 | bt_logging_level log_level = get_self_component_log_level( | |
719 | self_component); | |
720 | ||
721 | py_comp = bt_self_component_get_data(self_component); | |
722 | ||
723 | /* Find user's Python message iterator class */ | |
724 | py_comp_cls = PyObject_GetAttrString(py_comp, "__class__"); | |
725 | if (!py_comp_cls) { | |
726 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
727 | "Cannot get Python object's `__class__` attribute."); | |
728 | goto python_error; | |
729 | } | |
730 | ||
731 | py_iter_cls = PyObject_GetAttrString(py_comp_cls, "_iter_cls"); | |
732 | if (!py_iter_cls) { | |
733 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
734 | "Cannot get Python class's `_iter_cls` attribute."); | |
735 | goto python_error; | |
736 | } | |
737 | ||
738 | py_iter_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(self_message_iterator), | |
739 | SWIGTYPE_p_bt_self_message_iterator, 0); | |
740 | if (!py_iter_ptr) { | |
741 | const char *err = "Failed to create a SWIG pointer object."; | |
742 | ||
743 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
744 | "%s", err); | |
745 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_MESSAGE_ITERATOR( | |
746 | self_message_iterator, err); | |
747 | goto error; | |
748 | } | |
749 | ||
750 | /* | |
751 | * Create object with borrowed native message iterator | |
752 | * reference: | |
753 | * | |
754 | * py_iter = py_iter_cls.__new__(py_iter_cls, py_iter_ptr) | |
755 | */ | |
756 | py_iter = PyObject_CallMethod(py_iter_cls, "__new__", | |
757 | "(OO)", py_iter_cls, py_iter_ptr); | |
758 | if (!py_iter) { | |
759 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
760 | "Failed to call Python class's __new__() method: " | |
761 | "py-cls-addr=%p", py_iter_cls); | |
762 | goto python_error; | |
763 | } | |
764 | ||
765 | /* | |
766 | * Initialize object: | |
767 | * | |
768 | * py_iter.__init__(self_output_port) | |
769 | * | |
770 | * through the _init_for_native helper static method. | |
771 | * | |
772 | * At this point, py_iter._ptr is set, so this initialization | |
773 | * function has access to self._component (which gives it the | |
774 | * user Python component object from which the iterator was | |
775 | * created). | |
776 | */ | |
777 | py_component_port_output_ptr = SWIG_NewPointerObj( | |
778 | SWIG_as_voidptr(self_component_port_output), | |
779 | SWIGTYPE_p_bt_self_component_port_output, 0); | |
780 | if (!py_component_port_output_ptr) { | |
781 | const char *err = "Failed to create a SWIG pointer object."; | |
782 | ||
783 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
784 | "%s", err); | |
785 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_MESSAGE_ITERATOR( | |
786 | self_message_iterator, err); | |
787 | goto error; | |
788 | } | |
789 | ||
790 | py_init_method_result = PyObject_CallMethod(py_iter, | |
791 | "_bt_init_from_native", "O", py_component_port_output_ptr); | |
792 | if (!py_init_method_result) { | |
793 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
794 | "User's __init__() method failed:"); | |
795 | goto python_error; | |
796 | } | |
797 | ||
798 | /* | |
799 | * Since the Python code can never instantiate a user-defined | |
800 | * message iterator class, the native message iterator | |
801 | * object does NOT belong to a user Python message iterator | |
802 | * object (borrowed reference). However this Python object is | |
803 | * owned by this native message iterator object. | |
804 | * | |
805 | * In the Python world, the lifetime of the native message | |
806 | * iterator is managed by a _GenericMessageIterator | |
807 | * instance: | |
808 | * | |
809 | * _GenericMessageIterator instance: | |
810 | * owns a native bt_message_iterator object (iter) | |
811 | * owns a _UserMessageIterator instance (py_iter) | |
812 | * self._ptr is a borrowed reference to the | |
813 | * native bt_private_connection_private_message_iterator | |
814 | * object (iter) | |
815 | */ | |
816 | bt_self_message_iterator_set_data(self_message_iterator, py_iter); | |
817 | py_iter = NULL; | |
818 | goto end; | |
819 | ||
820 | python_error: | |
821 | /* Handling of errors that cause a Python exception to be set. */ | |
822 | status = py_exc_to_status_message_iterator(self_message_iterator); | |
823 | BT_ASSERT(status != __BT_FUNC_STATUS_OK); | |
824 | goto end; | |
825 | ||
826 | error: | |
827 | /* Handling of errors that don't cause a Python exception to be set. */ | |
828 | status = __BT_FUNC_STATUS_ERROR; | |
829 | ||
830 | end: | |
831 | BT_ASSERT(!PyErr_Occurred()); | |
832 | ||
833 | Py_XDECREF(py_comp_cls); | |
834 | Py_XDECREF(py_iter_cls); | |
835 | Py_XDECREF(py_iter_ptr); | |
836 | Py_XDECREF(py_component_port_output_ptr); | |
837 | Py_XDECREF(py_init_method_result); | |
838 | Py_XDECREF(py_iter); | |
839 | return status; | |
840 | } | |
841 | ||
842 | static | |
843 | bt_component_class_message_iterator_init_method_status | |
844 | component_class_source_message_iterator_init( | |
845 | bt_self_message_iterator *self_message_iterator, | |
846 | bt_self_component_source *self_component_source, | |
847 | bt_self_component_port_output *self_component_port_output) | |
848 | { | |
849 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
850 | ||
851 | return component_class_message_iterator_init(self_message_iterator, self_component, self_component_port_output); | |
852 | } | |
853 | ||
854 | static | |
855 | bt_component_class_message_iterator_init_method_status | |
856 | component_class_filter_message_iterator_init( | |
857 | bt_self_message_iterator *self_message_iterator, | |
858 | bt_self_component_filter *self_component_filter, | |
859 | bt_self_component_port_output *self_component_port_output) | |
860 | { | |
861 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
862 | ||
863 | return component_class_message_iterator_init(self_message_iterator, self_component, self_component_port_output); | |
864 | } | |
865 | ||
866 | static | |
867 | void component_class_message_iterator_finalize( | |
868 | bt_self_message_iterator *message_iterator) | |
869 | { | |
870 | PyObject *py_message_iter = bt_self_message_iterator_get_data( | |
871 | message_iterator); | |
872 | PyObject *py_method_result = NULL; | |
873 | ||
874 | BT_ASSERT(py_message_iter); | |
875 | ||
876 | /* Call user's _user_finalize() method */ | |
877 | py_method_result = PyObject_CallMethod(py_message_iter, | |
878 | "_user_finalize", NULL); | |
879 | ||
880 | if (PyErr_Occurred()) { | |
881 | bt_self_component *self_comp = | |
882 | bt_self_message_iterator_borrow_component( | |
883 | message_iterator); | |
884 | bt_logging_level log_level = get_self_component_log_level( | |
885 | self_comp); | |
886 | ||
887 | BT_COMP_LOG_CUR_LVL(BT_LOG_WARNING, log_level, self_comp, | |
888 | "User's _user_finalize() method raised an exception: ignoring:"); | |
889 | logw_exception(get_self_message_iterator_log_level( | |
890 | message_iterator)); | |
891 | } | |
892 | ||
893 | /* | |
894 | * Ignore any exception raised by the _user_finalize() method | |
895 | * because it won't change anything at this point: the component | |
896 | * is being destroyed anyway. | |
897 | */ | |
898 | PyErr_Clear(); | |
899 | Py_XDECREF(py_method_result); | |
900 | Py_DECREF(py_message_iter); | |
901 | } | |
902 | ||
903 | /* Valid for both sources and filters. */ | |
904 | ||
905 | static | |
906 | bt_component_class_message_iterator_next_method_status | |
907 | component_class_message_iterator_next( | |
908 | bt_self_message_iterator *message_iterator, | |
909 | bt_message_array_const msgs, uint64_t capacity, | |
910 | uint64_t *count) | |
911 | { | |
912 | bt_component_class_message_iterator_next_method_status status = __BT_FUNC_STATUS_OK; | |
913 | PyObject *py_message_iter = bt_self_message_iterator_get_data(message_iterator); | |
914 | PyObject *py_method_result = NULL; | |
915 | ||
916 | BT_ASSERT(py_message_iter); | |
917 | py_method_result = PyObject_CallMethod(py_message_iter, | |
918 | "_bt_next_from_native", NULL); | |
919 | if (!py_method_result) { | |
920 | status = py_exc_to_status_message_iterator(message_iterator); | |
921 | BT_ASSERT(status != __BT_FUNC_STATUS_OK); | |
922 | goto end; | |
923 | } | |
924 | ||
925 | /* | |
926 | * The returned object, on success, is an integer object | |
927 | * (PyLong) containing the address of a native message | |
928 | * object (which is now ours). | |
929 | */ | |
930 | msgs[0] = PyLong_AsVoidPtr(py_method_result); | |
931 | *count = 1; | |
932 | ||
933 | /* Clear potential overflow error; should never happen */ | |
934 | BT_ASSERT(!PyErr_Occurred()); | |
935 | goto end; | |
936 | ||
937 | end: | |
938 | Py_XDECREF(py_method_result); | |
939 | return status; | |
940 | } | |
941 | ||
942 | static | |
943 | bt_component_class_sink_consume_method_status | |
944 | component_class_sink_consume(bt_self_component_sink *self_component_sink) | |
945 | { | |
946 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
947 | PyObject *py_comp = bt_self_component_get_data(self_component); | |
948 | PyObject *py_method_result = NULL; | |
949 | bt_component_class_sink_consume_method_status status; | |
950 | ||
951 | BT_ASSERT(py_comp); | |
952 | py_method_result = PyObject_CallMethod(py_comp, | |
953 | "_user_consume", NULL); | |
954 | status = py_exc_to_status_component(self_component); | |
955 | BT_ASSERT(py_method_result || status != __BT_FUNC_STATUS_OK); | |
956 | Py_XDECREF(py_method_result); | |
957 | return status; | |
958 | } | |
959 | ||
960 | static | |
961 | int component_class_set_help_and_desc( | |
962 | bt_component_class *component_class, | |
963 | const char *description, const char *help) | |
964 | { | |
965 | int ret; | |
966 | ||
967 | if (description) { | |
968 | ret = bt_component_class_set_description(component_class, description); | |
969 | if (ret) { | |
970 | BT_LOGE("Cannot set component class's description: " | |
971 | "comp-cls-addr=%p", component_class); | |
972 | goto end; | |
973 | } | |
974 | } | |
975 | ||
976 | if (help) { | |
977 | ret = bt_component_class_set_help(component_class, help); | |
978 | if (ret) { | |
979 | BT_LOGE("Cannot set component class's help text: " | |
980 | "comp-cls-addr=%p", component_class); | |
981 | goto end; | |
982 | } | |
983 | } | |
984 | ||
985 | ret = 0; | |
986 | ||
987 | end: | |
988 | return ret; | |
989 | } | |
990 | ||
991 | static | |
992 | bt_component_class_source *bt_bt2_component_class_source_create( | |
993 | PyObject *py_cls, const char *name, const char *description, | |
994 | const char *help) | |
995 | { | |
996 | bt_component_class_source *component_class_source; | |
997 | bt_component_class *component_class; | |
998 | int ret; | |
999 | ||
1000 | BT_ASSERT(py_cls); | |
1001 | component_class_source = bt_component_class_source_create(name, | |
1002 | component_class_message_iterator_next); | |
1003 | if (!component_class_source) { | |
1004 | BT_LOGE_STR("Cannot create source component class."); | |
1005 | goto end; | |
1006 | } | |
1007 | ||
1008 | component_class = bt_component_class_source_as_component_class(component_class_source); | |
1009 | ||
1010 | if (component_class_set_help_and_desc(component_class, description, help)) { | |
1011 | goto end; | |
1012 | } | |
1013 | ||
1014 | ret = bt_component_class_source_set_init_method(component_class_source, component_class_source_init); | |
1015 | BT_ASSERT(ret == 0); | |
1016 | ret = bt_component_class_source_set_finalize_method(component_class_source, component_class_source_finalize); | |
1017 | BT_ASSERT(ret == 0); | |
1018 | ret = bt_component_class_source_set_message_iterator_can_seek_beginning_method(component_class_source, | |
1019 | component_class_can_seek_beginning); | |
1020 | BT_ASSERT(ret == 0); | |
1021 | ret = bt_component_class_source_set_message_iterator_seek_beginning_method(component_class_source, | |
1022 | component_class_seek_beginning); | |
1023 | BT_ASSERT(ret == 0); | |
1024 | ret = bt_component_class_source_set_output_port_connected_method(component_class_source, | |
1025 | component_class_source_output_port_connected); | |
1026 | BT_ASSERT(ret == 0); | |
1027 | ret = bt_component_class_source_set_query_method(component_class_source, component_class_source_query); | |
1028 | BT_ASSERT(ret == 0); | |
1029 | ret = bt_component_class_source_set_message_iterator_init_method( | |
1030 | component_class_source, component_class_source_message_iterator_init); | |
1031 | BT_ASSERT(ret == 0); | |
1032 | ret = bt_component_class_source_set_message_iterator_finalize_method( | |
1033 | component_class_source, component_class_message_iterator_finalize); | |
1034 | BT_ASSERT(ret == 0); | |
1035 | register_cc_ptr_to_py_cls(component_class, py_cls); | |
1036 | ||
1037 | end: | |
1038 | return component_class_source; | |
1039 | } | |
1040 | ||
1041 | static | |
1042 | bt_component_class_filter *bt_bt2_component_class_filter_create( | |
1043 | PyObject *py_cls, const char *name, const char *description, | |
1044 | const char *help) | |
1045 | { | |
1046 | bt_component_class *component_class; | |
1047 | bt_component_class_filter *component_class_filter; | |
1048 | int ret; | |
1049 | ||
1050 | BT_ASSERT(py_cls); | |
1051 | component_class_filter = bt_component_class_filter_create(name, | |
1052 | component_class_message_iterator_next); | |
1053 | if (!component_class_filter) { | |
1054 | BT_LOGE_STR("Cannot create filter component class."); | |
1055 | goto end; | |
1056 | } | |
1057 | ||
1058 | component_class = bt_component_class_filter_as_component_class(component_class_filter); | |
1059 | ||
1060 | if (component_class_set_help_and_desc(component_class, description, help)) { | |
1061 | goto end; | |
1062 | } | |
1063 | ||
1064 | ret = bt_component_class_filter_set_init_method(component_class_filter, component_class_filter_init); | |
1065 | BT_ASSERT(ret == 0); | |
1066 | ret = bt_component_class_filter_set_finalize_method (component_class_filter, component_class_filter_finalize); | |
1067 | BT_ASSERT(ret == 0); | |
1068 | ret = bt_component_class_filter_set_message_iterator_can_seek_beginning_method(component_class_filter, | |
1069 | component_class_can_seek_beginning); | |
1070 | BT_ASSERT(ret == 0); | |
1071 | ret = bt_component_class_filter_set_message_iterator_seek_beginning_method(component_class_filter, | |
1072 | component_class_seek_beginning); | |
1073 | BT_ASSERT(ret == 0); | |
1074 | ret = bt_component_class_filter_set_input_port_connected_method(component_class_filter, | |
1075 | component_class_filter_input_port_connected); | |
1076 | BT_ASSERT(ret == 0); | |
1077 | ret = bt_component_class_filter_set_output_port_connected_method(component_class_filter, | |
1078 | component_class_filter_output_port_connected); | |
1079 | BT_ASSERT(ret == 0); | |
1080 | ret = bt_component_class_filter_set_query_method(component_class_filter, component_class_filter_query); | |
1081 | BT_ASSERT(ret == 0); | |
1082 | ret = bt_component_class_filter_set_message_iterator_init_method( | |
1083 | component_class_filter, component_class_filter_message_iterator_init); | |
1084 | BT_ASSERT(ret == 0); | |
1085 | ret = bt_component_class_filter_set_message_iterator_finalize_method( | |
1086 | component_class_filter, component_class_message_iterator_finalize); | |
1087 | BT_ASSERT(ret == 0); | |
1088 | register_cc_ptr_to_py_cls(component_class, py_cls); | |
1089 | ||
1090 | end: | |
1091 | return component_class_filter; | |
1092 | } | |
1093 | ||
1094 | static | |
1095 | bt_component_class_sink *bt_bt2_component_class_sink_create( | |
1096 | PyObject *py_cls, const char *name, const char *description, | |
1097 | const char *help) | |
1098 | { | |
1099 | bt_component_class_sink *component_class_sink; | |
1100 | bt_component_class *component_class; | |
1101 | int ret; | |
1102 | ||
1103 | BT_ASSERT(py_cls); | |
1104 | component_class_sink = bt_component_class_sink_create(name, component_class_sink_consume); | |
1105 | ||
1106 | if (!component_class_sink) { | |
1107 | BT_LOGE_STR("Cannot create sink component class."); | |
1108 | goto end; | |
1109 | } | |
1110 | ||
1111 | component_class = bt_component_class_sink_as_component_class(component_class_sink); | |
1112 | ||
1113 | if (component_class_set_help_and_desc(component_class, description, help)) { | |
1114 | goto end; | |
1115 | } | |
1116 | ||
1117 | ret = bt_component_class_sink_set_init_method(component_class_sink, component_class_sink_init); | |
1118 | BT_ASSERT(ret == 0); | |
1119 | ret = bt_component_class_sink_set_finalize_method(component_class_sink, component_class_sink_finalize); | |
1120 | BT_ASSERT(ret == 0); | |
1121 | ret = bt_component_class_sink_set_input_port_connected_method(component_class_sink, | |
1122 | component_class_sink_input_port_connected); | |
1123 | BT_ASSERT(ret == 0); | |
1124 | ret = bt_component_class_sink_set_graph_is_configured_method(component_class_sink, | |
1125 | component_class_sink_graph_is_configured); | |
1126 | BT_ASSERT(ret == 0); | |
1127 | ret = bt_component_class_sink_set_query_method(component_class_sink, component_class_sink_query); | |
1128 | BT_ASSERT(ret == 0); | |
1129 | register_cc_ptr_to_py_cls(component_class, py_cls); | |
1130 | ||
1131 | end: | |
1132 | return component_class_sink; | |
1133 | } |