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asyncio: sync with Tulip

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* Tulip issue #184: Log subprocess events in debug mode

  - Log stdin, stdout and stderr transports and protocols
  - Log process identifier (pid)
  - Log connection of pipes
  - Log process exit
  - Log Process.communicate() tasks: feed stdin, read stdout and stderr
  - Add __repr__() method to many classes related to subprocesses


* Add BaseSubprocessTransport._pid attribute. Store the pid so it is still
  accessible after the process exited. It's more convinient for debug.

* create_connection(): add the socket in the "connected to" debug log

* Clean up some docstrings and comments. Remove unused unimplemented
  _read_from_self().
This commit is contained in:
Victor Stinner 2014-07-14 18:33:40 +02:00
parent b1ebfdddb3
commit acdb782a83
6 changed files with 181 additions and 43 deletions
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13
Lib/asyncio/unix_events.py
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@ -565,7 +565,7 @@ class AbstractChildWatcher:
process 'pid' terminates. Specifying another callback for the same
process replaces the previous handler.
Note: callback() must be thread-safe
Note: callback() must be thread-safe.
"""
raise NotImplementedError()
@ -721,6 +721,9 @@ class SafeChildWatcher(BaseChildWatcher):
return
returncode = self._compute_returncode(status)
if self._loop.get_debug():
logger.debug('process %s exited with returncode %s',
expected_pid, returncode)
try:
callback, args = self._callbacks.pop(pid)
@ -818,8 +821,16 @@ class FastChildWatcher(BaseChildWatcher):
if self._forks:
# It may not be registered yet.
self._zombies[pid] = returncode
if self._loop.get_debug():
logger.debug('unknown process %s exited '
'with returncode %s',
pid, returncode)
continue
callback = None
else:
if self._loop.get_debug():
logger.debug('process %s exited with returncode %s',
pid, returncode)
if callback is None:
logger.warning(