En Fri, 17 Apr 2009 22:20:11 -0300, <stephane.bisin...@gmail.com> escribió:
I have a problem with Condition.wait(), it doesn't return after the
given timeout. The thing is that if I try to create a simple program,
it works as expected, but in the actual code, the timeout is not
respected (albeit the notify()s work as expected). [...]
Has anyone the slightest idea on what I may be doing wrong? Or am I
just lucky enough to have stumbled across a bug?
Looks like a real bug :(
Maybe pollution from
another module in other parts of the code? (Like gobject...)
Anyway just for completeness here is a sample program that works for
me:
from threading import Thread
from threading import Condition
def some_func():
while True:
cond.acquire()
while True:
cond.wait(0.5)
print "Hello, world!"
cond = Condition()
thread = Thread(target=some_func)
thread.start()
If another thread has acquired the lock, cond.wait() doesn't return. Add
these lines at the end of your test and see:
sleep(2)
print "Main thread - cond.acquire()"
cond.acquire()
sleep(2)
print "Main thread - cond.release()"
cond.release()
sleep(2)
sys.exit()
The timeout is detected, but the wait method doesn't return, it's stuck at
the last line (trying to restore a saved RLock state).
I don't understand the logic behind that.
Please file a bug report at http://bugs.python.org/
--
Gabriel Genellina
--
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