threading : make stop the caller

[Laurent Claessens]

Le 19/06/2011 17:19, Chris Angelico a écrit :
> On Mon, Jun 20, 2011 at 12:42 AM, Laurent Claessens<moky.math at gmail.com>  wrote:
>>     Hello
>>
>>
>>  I've a list of tasks to perform. Each of them is a threading.Thread.
>>  Basically I have :
>>
>>  while task_list :
>>     task = task_list[0]
>>     task.run()
>>     task_list.remove(task)
>
> I'm not understanding what you're doing with threads here. Are you
> using threading.Thread but then calling its run() method
> synchronously?

Woops yes. I missprinted my example. I was using task.start() of course.

The aim is to copy the content of a repertory (with some conditions on 
each file, so I cannot use shutils or something).

I've one thread that runs over the repertory and fill the list 
'task_list' with taskes from the following class :


class FileCopyTask(threading.Thread):
     def __init__(self,source,destination,old_version):
         threading.Thread.__init__(self)
         self.source = source
         self.destination = destination
     def run(self):
         try :
             shutil.copy(self.source,self.destination)
         except (IOError,OSError),data :
             <WHAT TO PUT HERE ??>
         else :
             print "file copied"


In the same time I've a thread that read the list and perform the 
operations:

def run():
    while task_list :
       task = task_list[0]
       task_list.remove(task)
       task.start()


My problem is that when FileToCopyTask raises an error, the program does 
not stop.
In fact when the error is Disk Full, I want to stop the whole program 
because I know that the next task will fail too.

thanks for any help
Laurent