Re: [PATCH] strtod.3: ATTRIBUTES: Note functions that are thread safe with exceptions

[Peng Haitao <penght-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>]

On 01/20/2014 08:28 PM, Andre Majorel wrote:
>> +.BR strtold ()
>> +functions are thread-safe with exceptions.
>> +These functions can be safely used in multithreaded applications,
>> +as long as
>> +.BR setlocale (3)
>> +is not called to change the locale.
> 

The sentence is from the Oracle Solaris's manpages.

> Is the requirement that all threads be in the same locale ? Or
> that the thread that calls strtod() not use setlocale() at all ?
> Or maybe that setlocale() not be called by anyone after threads
> are created ? Or even that setlocale() not be used AT ALL by the
> process ?
> 
> It's not obvious to me which it is !
> 
> I think that a more specific wording would be useful.
> 

In a locale other than the standard "C" or "POSIX" locales, these function may
recognize additional locale-dependent syntax.
When these functions and setlocale() are simultaneously called in multithreaded applications,
these functions will not be thread safe.


-- 
Best Regards,
Peng
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