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Revision 01366b4e6f421ab0b417dc54c115e595d8a829fc authored by Anthony Baxter on 23 April 2002, 01:53:23 UTC, committed by Anthony Baxter on 23 April 2002, 01:53:23 UTC
Fix bug 544473 - "Queue module can deadlock". Use try/finally to ensure all Queue locks remain stable. Includes test case. Bugfix candidate. Original patch(es): python/dist/src/Lib/test/test_queue.py:1.1
1 parent f599b74
Tip revision: 01366b4e6f421ab0b417dc54c115e595d8a829fc authored by Anthony Baxter on 23 April 2002, 01:53:23 UTC
backport mhammond's patch:
backport mhammond's patch:
Tip revision: 01366b4
atexit.py
"""
atexit.py - allow programmer to define multiple exit functions to be executed
upon normal program termination.
One public function, register, is defined.
"""
__all__ = ["register"]
_exithandlers = []
def _run_exitfuncs():
"""run any registered exit functions
_exithandlers is traversed in reverse order so functions are executed
last in, first out.
"""
while _exithandlers:
func, targs, kargs = _exithandlers.pop()
apply(func, targs, kargs)
def register(func, *targs, **kargs):
"""register a function to be executed upon normal program termination
func - function to be called at exit
targs - optional arguments to pass to func
kargs - optional keyword arguments to pass to func
"""
_exithandlers.append((func, targs, kargs))
import sys
try:
x = sys.exitfunc
except AttributeError:
sys.exitfunc = _run_exitfuncs
else:
# if x isn't our own exit func executive, assume it's another
# registered exit function - append it to our list...
if x != _run_exitfuncs:
register(x)
del sys
if __name__ == "__main__":
def x1():
print "running x1"
def x2(n):
print "running x2(%s)" % `n`
def x3(n, kwd=None):
print "running x3(%s, kwd=%s)" % (`n`, `kwd`)
register(x1)
register(x2, 12)
register(x3, 5, "bar")
register(x3, "no kwd args")
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