[Python-checkins] python/dist/src/Lib threading.py,1.38,1.38.6.1
bcannon at users.sourceforge.net
bcannon at users.sourceforge.net
Sat Jul 3 15:59:00 EDT 2004
Update of /cvsroot/python/python/dist/src/Lib
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv6118/Lib
Modified Files:
Tag: release23-maint
threading.py
Log Message:
threading.Thread used to raise an exception about attempting to execute a
NoneType if an exception in a thread was raised during interpreter shutdown.
This led to a masking of the initial exception (not good). All fixed (good).
Closes bug #754449 (using both patch #954922 and a backport of rev. 1.41 from
HEAD).
Index: threading.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/threading.py,v
retrieving revision 1.38
retrieving revision 1.38.6.1
diff -C2 -d -r1.38 -r1.38.6.1
*** threading.py 1 Jul 2003 20:01:55 -0000 1.38
--- threading.py 3 Jul 2004 19:58:57 -0000 1.38.6.1
***************
*** 194,198 ****
def wait(self, timeout=None):
- currentThread() # for side-effect
assert self._is_owned(), "wait() of un-acquire()d lock"
waiter = _allocate_lock()
--- 194,197 ----
***************
*** 236,240 ****
def notify(self, n=1):
- currentThread() # for side-effect
assert self._is_owned(), "notify() of un-acquire()d lock"
__waiters = self.__waiters
--- 235,238 ----
***************
*** 370,373 ****
--- 368,376 ----
__initialized = False
+ # Need to store a reference to sys.exc_info for printing
+ # out exceptions when a thread tries to accept a global during interp.
+ # shutdown and thus raises an exception about trying to perform some
+ # operation on/with a NoneType
+ __exc_info = _sys.exc_info
def __init__(self, group=None, target=None, name=None,
***************
*** 384,387 ****
--- 387,393 ----
self.__block = Condition(Lock())
self.__initialized = True
+ # sys.stderr is not stored in the class like
+ # sys.exc_info since it can be changed during execution
+ self.__stderr = _sys.stderr
def _set_daemon(self):
***************
*** 441,448 ****
if __debug__:
self._note("%s.__bootstrap(): unhandled exception", self)
! s = _StringIO()
! _print_exc(file=s)
! _sys.stderr.write("Exception in thread %s:\n%s\n" %
! (self.getName(), s.getvalue()))
else:
if __debug__:
--- 447,478 ----
if __debug__:
self._note("%s.__bootstrap(): unhandled exception", self)
! # If sys.stderr is no more (most likely from interpreter
! # shutdown) use self.__stderr. Otherwise still use sys (as in
! # _sys) in case sys.stderr was redefined.
! if _sys:
! _sys.stderr.write("Exception in thread %s:\n%s\n" %
! (self.getName(), _format_exc()))
! else:
! # Do the best job possible w/o a huge amt. of code to
! # approx. a traceback stack trace
! exc_type, exc_value, exc_tb = self.__exc_info()
! try:
! print>>self.__stderr, (
! "Exception in thread " + self.getName() +
! " (most likely raised during interpreter shutdown):")
! print>>self.__stderr, (
! "Traceback (most recent call last):")
! while exc_tb:
! print>>self.__stderr, (
! ' File "%s", line %s, in %s' %
! (exc_tb.tb_frame.f_code.co_filename,
! exc_tb.tb_lineno,
! exc_tb.tb_frame.f_code.co_name))
! exc_tb = exc_tb.tb_next
! print>>self.__stderr, ("%s: %s" % (exc_type, exc_value))
! # Make sure that exc_tb gets deleted since it is a memory
! # hog; deleting everything else is just for thoroughness
! finally:
! del exc_type, exc_value, exc_tb
else:
if __debug__:
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