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Is printf thread-safe?

Someone tell me it isn't, however, I think it is.
If it isn't, then why?

Thank you in advance.
--
Steven Ding

Steven wrote:
> Is printf thread-safe?

Yes. No. Maybe.
Since neither standard C nor standard C++ define a thread model, there's
no way to answer this question in the context of either newsgroup.

>
> Someone tell me it isn't, however, I think it is.
> If it isn't, then why?
>
It's an implementation issue. Please ask in a forum specific to your
platform -- or in news:comp.programming.threads.

HTH,
--ag

--
Artie Gold -- Austin, Texas



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Artie Gold <> wrote in news::

> Yes. No. Maybe.
> Since neither standard C nor standard C++ define a thread model,
> there's no way to answer this question in the context of either
> newsgroup.
>
> It's an implementation issue. Please ask in a forum specific to your
> platform -- or in news:comp.programming.threads.
>
> HTH,
> --ag
>

I get it!
Thank you very much.

--
Steven Ding

Steven wrote:
>
> Is printf thread-safe?

http://groups.google.com/groups?selm...4E99D%40web.de

regards,
alexander.

Hi

No the printf thread is not a safe one as we always use only one
output buffer for the printf's. As a result of this the printf
statements on a multi-threaded application are not safe. resort to
other techniques or place locks before printf(check to avoid
deadlocks). Use system calls such as read and write ..reading and
writing from standard output and standard input instead as these are
multi-processor and multi-thread safe.

Vijay

Steven <> wrote in message news:<Xns93A65C98ED65STEVEN@202.108.36.140>...
> Is printf thread-safe?
>
> Someone tell me it isn't, however, I think it is.
> If it isn't, then why?
>
> Thank you in advance.

>Steven <> wrote in message news:<Xns93A65C98ED65STEVEN@202.108.36.140>...
>> Is printf thread-safe?

In article < >
Vijay B <> writes:
> No the printf thread is not a safe one as we always use only one
>output buffer for the printf's.

I have already noted elsethread that this is system-dependent; I
will now add that, for BSD/OS, printf() *is* thread-safe.

How do you know the OP is using your particular system?
--
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