Stéphane Ninin wrote: > Hello, > > Probably a stupid question, but I am not a multithreading expert... > > I want to share a dictionary between several threads. > Actually, I will wrap the dictionary in a class > and want to protect the "sensitive accesses" with locks. > > The problem is I am not sure which concurrent access to the dictionary > could cause a problem. > > I assume that two write's on the same location would be, > but what if one thread does > > mydict['a'] = something > > and another thread: > > mydict['b'] = something else > > Is a lock required in such a case ?
i dont think you need to use a lock for these cases because mydict['a'] refers to mydict['b'] memory locations (i may be wrong because i dont know Python implementation). Just a recomendation, you could also use a Queue object to control write access to the dictionary. -Cheers -- http://mail.python.org/mailman/listinfo/python-list
