On Mon, 06 Feb 2006 18:34:18 -0500
Kent Johnson <[EMAIL PROTECTED]> wrote:
>
> It sounds like you have some attributes that you are using as flags to
> allow one thread to control another. There are definitely some pitfalls
> here. You probably want to use threading.Condition or Queue.Queue to
> communicate between the threads. Can you give more details of what you
> are trying to do?
>
I have used a boolean to control access to a variable that is used by two
threads,
as in this example:
thread 1 does:
while self.locked:
pass
self.locked = 1
if condition:
self.name = 'bob'
else:
self.name = 'mike'
self.locked = 0
thread 2 does:
while self.locked:
pass
self.locked = 1
n = self.name
self.locked = 0
if n == 'bob':
<do something>
else:
<do something else>
I *thought* this would be safe, but now reading this thread I start to doubt.
Are there any pitfalls I overlooked in this technique?
Thanks
Michael
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