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bpo-32436: Implement PEP 567 (#5027)

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Yury Selivanov 2018-01-22 19:11:18 -05:00 • committed by GitHub
parent 9089a26591
commit f23746a934
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41 changed files with 6269 additions and 120 deletions
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21
Lib/asyncio/base_events.py
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@ -489,7 +489,7 @@ class BaseEventLoop(events.AbstractEventLoop):
"""
return time.monotonic()
def call_later(self, delay, callback, *args):
def call_later(self, delay, callback, *args, context=None):
"""Arrange for a callback to be called at a given time.
Return a Handle: an opaque object with a cancel() method that
@ -505,12 +505,13 @@ class BaseEventLoop(events.AbstractEventLoop):
Any positional arguments after the callback will be passed to
the callback when it is called.
"""
timer = self.call_at(self.time() + delay, callback, *args)
timer = self.call_at(self.time() + delay, callback, *args,
context=context)
if timer._source_traceback:
del timer._source_traceback[-1]
return timer
def call_at(self, when, callback, *args):
def call_at(self, when, callback, *args, context=None):
"""Like call_later(), but uses an absolute time.
Absolute time corresponds to the event loop's time() method.
@ -519,14 +520,14 @@ class BaseEventLoop(events.AbstractEventLoop):
if self._debug:
self._check_thread()
self._check_callback(callback, 'call_at')
timer = events.TimerHandle(when, callback, args, self)
timer = events.TimerHandle(when, callback, args, self, context)
if timer._source_traceback:
del timer._source_traceback[-1]
heapq.heappush(self._scheduled, timer)
timer._scheduled = True
return timer
def call_soon(self, callback, *args):
def call_soon(self, callback, *args, context=None):
"""Arrange for a callback to be called as soon as possible.
This operates as a FIFO queue: callbacks are called in the
@ -540,7 +541,7 @@ class BaseEventLoop(events.AbstractEventLoop):
if self._debug:
self._check_thread()
self._check_callback(callback, 'call_soon')
handle = self._call_soon(callback, args)
handle = self._call_soon(callback, args, context)
if handle._source_traceback:
del handle._source_traceback[-1]
return handle
@ -555,8 +556,8 @@ class BaseEventLoop(events.AbstractEventLoop):
f'a callable object was expected by {method}(), '
f'got {callback!r}')
def _call_soon(self, callback, args):
handle = events.Handle(callback, args, self)
def _call_soon(self, callback, args, context):
handle = events.Handle(callback, args, self, context)
if handle._source_traceback:
del handle._source_traceback[-1]
self._ready.append(handle)
@ -579,12 +580,12 @@ class BaseEventLoop(events.AbstractEventLoop):
"Non-thread-safe operation invoked on an event loop other "
"than the current one")
def call_soon_threadsafe(self, callback, *args):
def call_soon_threadsafe(self, callback, *args, context=None):
"""Like call_soon(), but thread-safe."""
self._check_closed()
if self._debug:
self._check_callback(callback, 'call_soon_threadsafe')
handle = self._call_soon(callback, args)
handle = self._call_soon(callback, args, context)
if handle._source_traceback:
del handle._source_traceback[-1]
self._write_to_self()