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asyncio: New error handling API. Issue #20681.

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This commit is contained in:
Yury Selivanov 2014-02-18 18:02:19 -05:00
parent 065efc3072
commit ff827f08ac
15 changed files with 491 additions and 99 deletions
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26
Lib/asyncio/unix_events.py
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@ -65,7 +65,7 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
except ValueError as exc:
raise RuntimeError(str(exc))
handle = events.Handle(callback, args)
handle = events.Handle(callback, args, self)
self._signal_handlers[sig] = handle
try:
@ -294,7 +294,12 @@ class _UnixReadPipeTransport(transports.ReadTransport):
def _fatal_error(self, exc):
# should be called by exception handler only
if not (isinstance(exc, OSError) and exc.errno == errno.EIO):
logger.exception('Fatal error for %s', self)
self._loop.call_exception_handler({
'message': 'Fatal transport error',
'exception': exc,
'transport': self,
'protocol': self._protocol,
})
self._close(exc)
def _close(self, exc):
@ -441,7 +446,12 @@ class _UnixWritePipeTransport(selector_events._FlowControlMixin,
def _fatal_error(self, exc):
# should be called by exception handler only
if not isinstance(exc, (BrokenPipeError, ConnectionResetError)):
logger.exception('Fatal error for %s', self)
self._loop.call_exception_handler({
'message': 'Fatal transport error',
'exception': exc,
'transport': self,
'protocol': self._protocol,
})
self._close(exc)
def _close(self, exc=None):
@ -582,8 +592,14 @@ class BaseChildWatcher(AbstractChildWatcher):
def _sig_chld(self):
try:
self._do_waitpid_all()
except Exception:
logger.exception('Unknown exception in SIGCHLD handler')
except Exception as exc:
# self._loop should always be available here
# as '_sig_chld' is added as a signal handler
# in 'attach_loop'
self._loop.call_exception_handler({
'message': 'Unknown exception in SIGCHLD handler',
'exception': exc,
})
def _compute_returncode(self, status):
if os.WIFSIGNALED(status):