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| From | jt@toerring.de (Jens Thoms Toerring) |
| Newsgroups | comp.lang.python |
| Subject | Re: Writing to same file from two threads |
| Date | 26 Feb 2013 20:08:05 GMT |
| Organization | Freie Universitaet Berlin |
| Lines | 21 |
| Message-ID | <ap4j15Fmb9lU1@mid.uni-berlin.de> (permalink) |
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Paul Rubin <no.email@nospam.invalid> wrote:
> jt@toerring.de (Jens Thoms Toerring) writes:
> > in garbled output (i.e. having some output from A inside a
> > line written by B or vice versae) because the "main thread" or
> Yes they do get garbled like that. Preferred Python style is put a
> single thread in charge of all the i/o to that file, and communicate
> with it by message passing through Queue objects. That is safer than
> directly using locks.
Thank you for confirmig my suspicion;-) But you have induced
another question: why is using a Queue safer than locking (not
that I doubt that it might be more elegant etc.). Is it "safer"
because it's less likely that one gets it wrong (e.g. by for-
grtting to acquire the lock) or is there something inherently
unsafe about locks?
Thank you and best regards, Jens
--
\ Jens Thoms Toerring ___ jt@toerring.de
\__________________________ http://toerring.de
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Writing to same file from two threads jt@toerring.de (Jens Thoms Toerring) - 2013-02-26 15:17 +0000
Re: Writing to same file from two threads Paul Rubin <no.email@nospam.invalid> - 2013-02-26 09:32 -0800
Re: Writing to same file from two threads jt@toerring.de (Jens Thoms Toerring) - 2013-02-26 20:08 +0000
Re: Writing to same file from two threads Antoine Pitrou <solipsis@pitrou.net> - 2013-02-27 13:26 +0000
Re: Writing to same file from two threads jt@toerring.de (Jens Thoms Toerring) - 2013-02-27 16:05 +0000
Re: Writing to same file from two threads Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-28 01:05 +0000
Re: Writing to same file from two threads Antoine Pitrou <solipsis@pitrou.net> - 2013-03-01 14:54 +0000
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