{{ message }}
-
Notifications
You must be signed in to change notification settings - Fork 615
Expand file tree
/
Copy pathcbhandles.pyx
More file actions
440 lines (341 loc) · 12.4 KB
/
Copy pathcbhandles.pyx
File metadata and controls
440 lines (341 loc) · 12.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
@cython.no_gc_clear
@cython.freelist(DEFAULT_FREELIST_SIZE)
cdef class Handle:
def __cinit__(self):
self._cancelled = 0
self.cb_type = 0
self._source_traceback = None
cdef inline _set_loop(self, Loop loop):
self.loop = loop
if UVLOOP_DEBUG:
system.__atomic_fetch_add(
&loop._debug_cb_handles_total, 1, system.__ATOMIC_RELAXED)
system.__atomic_fetch_add(
&loop._debug_cb_handles_count, 1, system.__ATOMIC_RELAXED)
if loop._debug:
self._source_traceback = extract_stack()
cdef inline _set_context(self, object context):
if context is None:
context = Context_CopyCurrent()
self.context = context
def __dealloc__(self):
if UVLOOP_DEBUG and self.loop is not None:
system.__atomic_fetch_sub(
&self.loop._debug_cb_handles_count, 1, system.__ATOMIC_RELAXED)
if self.loop is None:
raise RuntimeError('Handle.loop is None in Handle.__dealloc__')
def __init__(self):
raise TypeError(
'{} is not supposed to be instantiated from Python'.format(
self.__class__.__name__))
cdef inline _run(self):
cdef:
int cb_type
object callback
if self._cancelled:
return
cb_type = self.cb_type
# Since _run is a cdef and there's no BoundMethod,
# we guard 'self' manually (since the callback
# might cause GC of the handle.)
Py_INCREF(self)
try:
assert self.context is not None
Context_Enter(self.context)
if cb_type == 1:
callback = self.arg1
if callback is None:
raise RuntimeError(
'cannot run Handle; callback is not set')
args = self.arg2
if args is None:
callback()
else:
callback(*args)
elif cb_type == 2:
(<method_t>self.callback)(self.arg1)
elif cb_type == 3:
(<method1_t>self.callback)(self.arg1, self.arg2)
elif cb_type == 4:
(<method2_t>self.callback)(self.arg1, self.arg2, self.arg3)
elif cb_type == 5:
(<method3_t>self.callback)(
self.arg1, self.arg2, self.arg3, self.arg4)
else:
raise RuntimeError('invalid Handle.cb_type: {}'.format(
cb_type))
except (KeyboardInterrupt, SystemExit):
raise
except BaseException as ex:
if cb_type == 1:
msg = 'Exception in callback {}'.format(callback)
else:
msg = 'Exception in callback {}'.format(self.meth_name)
context = {
'message': msg,
'exception': ex,
'handle': self,
}
if self._source_traceback is not None:
context['source_traceback'] = self._source_traceback
self.loop.call_exception_handler(context)
finally:
context = self.context
Py_DECREF(self)
Context_Exit(context)
cdef _cancel(self):
self._cancelled = 1
self.callback = NULL
self.arg1 = self.arg2 = self.arg3 = self.arg4 = None
cdef _format_handle(self):
# Mirrors `asyncio.base_events._format_handle`.
if self.cb_type == 1 and self.arg1 is not None:
cb = self.arg1
if isinstance(getattr(cb, '__self__', None), aio_Task):
try:
return repr(cb.__self__)
except (AttributeError, TypeError, ValueError) as ex:
# Cython generates empty __code__ objects for coroutines
# that can crash asyncio.Task.__repr__ with an
# AttributeError etc. Guard against that.
self.loop.call_exception_handler({
'message': 'exception in Task.__repr__',
'task': cb.__self__,
'exception': ex,
'handle': self,
})
return repr(self)
# Public API
def __repr__(self):
info = [self.__class__.__name__]
if self._cancelled:
info.append('cancelled')
if self.cb_type == 1 and self.arg1 is not None:
func = self.arg1
# Cython can unset func.__qualname__/__name__, hence the checks.
if hasattr(func, '__qualname__') and func.__qualname__:
cb_name = func.__qualname__
elif hasattr(func, '__name__') and func.__name__:
cb_name = func.__name__
else:
cb_name = repr(func)
info.append(cb_name)
elif self.meth_name is not None:
info.append(self.meth_name)
if self._source_traceback is not None:
frame = self._source_traceback[-1]
info.append('created at {}:{}'.format(frame[0], frame[1]))
return '<' + ' '.join(info) + '>'
def cancel(self):
self._cancel()
def cancelled(self):
return self._cancelled
@cython.no_gc_clear
@cython.freelist(DEFAULT_FREELIST_SIZE)
cdef class TimerHandle:
def __cinit__(self, Loop loop, object callback, object args,
uint64_t delay, object context):
self.loop = loop
self.callback = callback
self.args = args
self._cancelled = 0
if UVLOOP_DEBUG:
system.__atomic_fetch_add(
&self.loop._debug_cb_timer_handles_total, 1, system.__ATOMIC_RELAXED)
system.__atomic_fetch_add(
&self.loop._debug_cb_timer_handles_count, 1, system.__ATOMIC_RELAXED)
if context is None:
context = Context_CopyCurrent()
self.context = context
if loop._debug:
self._debug_info = (
format_callback_name(callback),
extract_stack()
)
else:
self._debug_info = None
self.timer = UVTimer.new(
loop, <method_t>self._run, self, delay)
self.timer.start()
self._when = self.timer.get_when() * 1e-3
# Only add to loop._timers when `self.timer` is successfully created
loop._timers.add(self)
property _source_traceback:
def __get__(self):
if self._debug_info is not None:
return self._debug_info[1]
def __dealloc__(self):
if UVLOOP_DEBUG:
system.__atomic_fetch_sub(
&self.loop._debug_cb_timer_handles_count, 1, system.__ATOMIC_RELAXED)
if self.timer is not None:
raise RuntimeError('active TimerHandle is deallacating')
cdef _cancel(self):
if self._cancelled == 1:
return
self._cancelled = 1
self._clear()
cdef inline _clear(self):
if self.timer is None:
return
self.callback = None
self.args = None
try:
self.loop._timers.remove(self)
finally:
self.timer._close()
self.timer = None # let the UVTimer handle GC
cdef _run(self):
if self._cancelled == 1:
return
if self.callback is None:
raise RuntimeError('cannot run TimerHandle; callback is not set')
callback = self.callback
args = self.args
# Since _run is a cdef and there's no BoundMethod,
# we guard 'self' manually.
Py_INCREF(self)
if self.loop._debug:
started = time_monotonic()
try:
assert self.context is not None
Context_Enter(self.context)
if args is not None:
callback(*args)
else:
callback()
except (KeyboardInterrupt, SystemExit):
raise
except BaseException as ex:
context = {
'message': 'Exception in callback {}'.format(callback),
'exception': ex,
'handle': self,
}
if self._debug_info is not None:
context['source_traceback'] = self._debug_info[1]
self.loop.call_exception_handler(context)
else:
if self.loop._debug:
delta = time_monotonic() - started
if delta > self.loop.slow_callback_duration:
aio_logger.warning(
'Executing %r took %.3f seconds',
self, delta)
finally:
context = self.context
Py_DECREF(self)
Context_Exit(context)
self._clear()
# Public API
def __repr__(self):
info = [self.__class__.__name__]
if self._cancelled:
info.append('cancelled')
if self._debug_info is not None:
callback_name = self._debug_info[0]
source_traceback = self._debug_info[1]
else:
callback_name = None
source_traceback = None
if callback_name is not None:
info.append(callback_name)
elif self.callback is not None:
info.append(format_callback_name(self.callback))
if source_traceback is not None:
frame = source_traceback[-1]
info.append('created at {}:{}'.format(frame[0], frame[1]))
return '<' + ' '.join(info) + '>'
def cancelled(self):
return self._cancelled
def cancel(self):
self._cancel()
def when(self):
return self._when
cdef format_callback_name(func):
if hasattr(func, '__qualname__'):
cb_name = getattr(func, '__qualname__')
elif hasattr(func, '__name__'):
cb_name = getattr(func, '__name__')
else:
cb_name = repr(func)
return cb_name
cdef new_Handle(Loop loop, object callback, object args, object context):
cdef Handle handle
handle = Handle.__new__(Handle)
handle._set_loop(loop)
handle._set_context(context)
handle.cb_type = 1
handle.arg1 = callback
handle.arg2 = args
return handle
cdef new_MethodHandle(Loop loop, str name, method_t callback, object context,
object bound_to):
cdef Handle handle
handle = Handle.__new__(Handle)
handle._set_loop(loop)
handle._set_context(context)
handle.cb_type = 2
handle.meth_name = name
handle.callback = <void*> callback
handle.arg1 = bound_to
return handle
cdef new_MethodHandle1(Loop loop, str name, method1_t callback, object context,
object bound_to, object arg):
cdef Handle handle
handle = Handle.__new__(Handle)
handle._set_loop(loop)
handle._set_context(context)
handle.cb_type = 3
handle.meth_name = name
handle.callback = <void*> callback
handle.arg1 = bound_to
handle.arg2 = arg
return handle
cdef new_MethodHandle2(Loop loop, str name, method2_t callback, object context,
object bound_to, object arg1, object arg2):
cdef Handle handle
handle = Handle.__new__(Handle)
handle._set_loop(loop)
handle._set_context(context)
handle.cb_type = 4
handle.meth_name = name
handle.callback = <void*> callback
handle.arg1 = bound_to
handle.arg2 = arg1
handle.arg3 = arg2
return handle
cdef new_MethodHandle3(Loop loop, str name, method3_t callback, object context,
object bound_to, object arg1, object arg2, object arg3):
cdef Handle handle
handle = Handle.__new__(Handle)
handle._set_loop(loop)
handle._set_context(context)
handle.cb_type = 5
handle.meth_name = name
handle.callback = <void*> callback
handle.arg1 = bound_to
handle.arg2 = arg1
handle.arg3 = arg2
handle.arg4 = arg3
return handle
cdef extract_stack():
"""Replacement for traceback.extract_stack() that only does the
necessary work for asyncio debug mode.
"""
try:
f = sys_getframe()
# sys._getframe() might raise ValueError if being called without a frame, e.g.
# from Cython or similar C extensions.
except ValueError:
return None
if f is None:
return
try:
stack = tb_StackSummary.extract(tb_walk_stack(f),
limit=DEBUG_STACK_DEPTH,
lookup_lines=False)
finally:
f = None
stack.reverse()
return stack
You can’t perform that action at this time.