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Re: [Patch, Fortran] PR25829: Asynchronous I/O (v2)
On Wed, Jun 6, 2018 at 3:43 AM, Jerry DeLisle <jvdelisle@charter.net> wrote:
> On 06/05/2018 06:58 AM, Rainer Orth wrote:
>
>> Hi Nicolas,
>>
>> Because they were originally intended for the gfortran test suite, but I
>>> couldn't run it there because of libpthread. I will change the numbering
>>> scheme.
>>>
>>
>> the way that libpthread dependency is currently handled seems weird to
>> me: right now it is only dragged in via -fopenmp, although libgomp isn't
>> otherwise used AFAICS. Is this really supposed to work this way? And
>> what about targets that don't have pthreads? Isn't <gthr.h> supposed to
>> abstract away from the details of the underlying threading library?
>>
>
> From my perspective, since async is a feature of the language it should
> not require any special flags, just link to pthread always.
>
> If a user does not use it, it will most likely be optimized out.
>
> Jerry
>
This has the disadvantage that then the library will always use pthread
stuff also for single-threaded programs, where we now use the stubbed-out
dummy implementations which are faster.
--
Janne Blomqvist