def print_exception(self, context, type, value, tb):
# Python 3 does not gracefully handle None value or tb in
# traceback.print_exception() as previous versions did.
# pylint:disable=no-member
errstream = self.exception_stream
if value is None:
errstream.write('%s\n' % type.__name__)
else:
traceback.print_exception(type, value, tb, file=errstream)
del tb
try:
errstream.write(gmctime())
errstream.write(' ' if context is not None else '\n')
except: # pylint:disable=bare-except
# Possible not safe to import under certain
# error conditions in Python 2
pass
if context is not None:
if not isinstance(context, str):
try:
context = self.format_context(context)
except: # pylint:disable=bare-except
traceback.print_exc(file=self.exception_stream)
context = repr(context)
errstream.write('%s failed with %s\n\n' % (
context,
getattr(type, '__name__', 'exception'),
))
def did_block_hub_report(self, hub, active_greenlet, format_kwargs):
# XXX: On Python 2 with greenlet 1.0a1, '%s' formatting a greenlet
# results in a unicode object. This is a bug in greenlet, I think.
# https://github.com/python-greenlet/greenlet/issues/218
report = [
'=' * 80,
'\n%s : Greenlet %s appears to be blocked' %
(gmctime(), str(active_greenlet))
]
report.append(" Reported by %s" % (self, ))
try:
frame = sys._current_frames()[hub.thread_ident]
except KeyError:
# The thread holding the hub has died. Perhaps we shouldn't
# even report this?
stack = ["Unknown: No thread found for hub %r\n" % (hub, )]
else:
stack = traceback.format_stack(frame)
report.append('Blocked Stack (for thread id %s):' %
(hex(hub.thread_ident), ))
report.append(''.join(stack))
report.append("Info:")
report.extend(format_run_info(**format_kwargs))
return report
def print_exception(self, context, type, value, tb):
# Python 3 does not gracefully handle None value or tb in
# traceback.print_exception() as previous versions did.
# pylint:disable=no-member
errstream = self.exception_stream
if not errstream: # pragma: no cover
# If the error stream is gone, such as when the sys dict
# gets cleared during interpreter shutdown,
# don't cause follow-on errors.
# See https://github.com/gevent/gevent/issues/1295
return
if value is None:
errstream.write('%s\n' % type.__name__)
else:
traceback.print_exception(type, value, tb, file=errstream)
del tb
try:
errstream.write(gmctime())
errstream.write(' ' if context is not None else '\n')
except: # pylint:disable=bare-except
# Possible not safe to import under certain
# error conditions in Python 2
pass
if context is not None:
if not isinstance(context, str):
try:
context = self.format_context(context)
except: # pylint:disable=bare-except
traceback.print_exc(file=self.exception_stream)
context = repr(context)
errstream.write('%s failed with %s\n\n' % (context, getattr(type, '__name__', 'exception'), ))
def print_exception(self, context, type, value, tb):
# Python 3 does not gracefully handle None value or tb in
# traceback.print_exception() as previous versions did.
# pylint:disable=no-member
errstream = self.exception_stream
if not errstream: # pragma: no cover
# If the error stream is gone, such as when the sys dict
# gets cleared during interpreter shutdown,
# don't cause follow-on errors.
# See https://github.com/gevent/gevent/issues/1295
return
if value is None:
errstream.write('%s\n' % type.__name__)
else:
traceback.print_exception(type, value, tb, file=errstream)
del tb
try:
errstream.write(gmctime())
errstream.write(' ' if context is not None else '\n')
except: # pylint:disable=bare-except
# Possible not safe to import under certain
# error conditions in Python 2
pass
if context is not None:
if not isinstance(context, str):
try:
context = self.format_context(context)
except: # pylint:disable=bare-except
traceback.print_exc(file=self.exception_stream)
context = repr(context)
errstream.write('%s failed with %s\n\n' % (context, getattr(type, '__name__', 'exception'), ))
def monitor_blocking(self, hub):
# Called periodically to see if the trace function has
# fired to switch greenlets. If not, we will print
# the greenlet tree.
# For tests, we return a true value when we think we found something
# blocking
# There is a race condition with this being incremented in the
# thread we're monitoring, but probably not often enough to lead
# to annoying false positives.
active_greenlet = self._active_greenlet
did_switch = self._greenlet_switch_counter != 0
self._greenlet_switch_counter = 0
if did_switch or active_greenlet is None or active_greenlet is hub:
# Either we switched, or nothing is running (we got a
# trace event we don't know about or were requested to
# ignore), or we spent the whole time in the hub, blocked
# for IO. Nothing to report.
return
report = [
'=' * 80,
'\n%s : Greenlet %s appears to be blocked' %
(gmctime(), active_greenlet)
]
report.append(" Reported by %s" % (self, ))
try:
frame = sys._current_frames()[hub.thread_ident]
except KeyError:
# The thread holding the hub has died. Perhaps we shouldn't
# even report this?
stack = ["Unknown: No thread found for hub %r\n" % (hub, )]
else:
stack = traceback.format_stack(frame)
report.append('Blocked Stack (for thread id %s):' %
(hex(hub.thread_ident), ))
report.append(''.join(stack))
report.append("Info:")
report.extend(
format_run_info(greenlet_stacks=False,
current_thread_ident=self.monitor_thread_ident))
report.append(report[0])
stream = hub.exception_stream
for line in report:
# Printing line by line may interleave with other things,
# but it should also prevent a "reentrant call to print"
# when the report is large.
print(line, file=stream)
notify(
EventLoopBlocked(active_greenlet, GEVENT_CONFIG.max_blocking_time,
report))
return (active_greenlet, report)
def did_block_hub_report(self, hub, active_greenlet, format_kwargs):
report = ['=' * 80,
'\n%s : Greenlet %s appears to be blocked' %
(gmctime(), active_greenlet)]
report.append(" Reported by %s" % (self,))
try:
frame = sys._current_frames()[hub.thread_ident]
except KeyError:
# The thread holding the hub has died. Perhaps we shouldn't
# even report this?
stack = ["Unknown: No thread found for hub %r\n" % (hub,)]
else:
stack = traceback.format_stack(frame)
report.append('Blocked Stack (for thread id %s):' % (hex(hub.thread_ident),))
report.append(''.join(stack))
report.append("Info:")
report.extend(format_run_info(**format_kwargs))
return report
