Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.programming.threads > #946

Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually

Cross-posted to 2 groups.

Followups directed to: comp.programming.threads

Show all headers | View raw

On 7/6/2012 2:33 PM, Uncle Steve wrote:
> On Fri, Jul 06, 2012 at 06:11:28PM -0400, Eric Sosman wrote:
>> [...]
>>      Although the latest "C11" Standard adds some multi-threading
>> support, [...]
>>
>>      [...]I suggest you visit comp.programming.threads,
>> a newsgroup devoted to multi-threading issues.  There you will learn
>> that `volatile' is neither necessary *nor* sufficient in connection
>> with variables shared between threads.  [...]
>
> Is there are C standard threading framework?

     See above.

> Threaded code is a de-facto reality in today's multi-core environment.
> Save for the embedded sector, most systems will run threads in
> parallel, and that is that.  C has to recognize this watershed moment
> in the refinement of the language.

     See above.

> What is it about the volatile attribute that makes it
> insufficient in your mind to the problem presented by threaded code?

     "Then Kolokolo Bird said, with a mournful cry, 'Go to the banks of
the great grey-green, greasy Limpopo River -- er, that is, the G,G-G,G
comp.programming.threads newsgroup -- all set about with fever-trees,
and find out.'"

     By "go," I mean "go away," as in "Don't continue this thread in
comp.lang.c unless you specifically wish to discuss the threading
features of C11."  Follow-ups set.

-- 
Eric Sosman
esosman@ieee-dot-org.invalid

Back to comp.programming.threads | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Uncle Steve <stevet810@gmail.com> - 2012-07-06 14:33 -0400
  Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Ian Collins <ian-news@hotmail.com> - 2012-07-07 11:29 +1200
    Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Uncle Steve <stevet810@gmail.com> - 2012-07-06 16:27 -0400
      Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Ian Collins <ian-news@hotmail.com> - 2012-07-07 12:37 +1200
        Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Uncle Steve <stevet810@gmail.com> - 2012-07-06 17:29 -0400
          Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Ian Collins <ian-news@hotmail.com> - 2012-07-07 15:50 +1200
            Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Uncle Steve <stevet810@gmail.com> - 2012-07-06 19:55 -0400
          Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-07-07 17:04 +0300
  Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-07-07 08:16 -0400
    Re: Clarification on the applicability of compile-time optimization to a struct variable which encompasses a mixture of fields declared as volatile and non-volatile individually Uncle Steve <stevet810@gmail.com> - 2012-07-07 05:09 -0400

csiph-web