On 4/18/2019 4:31 AM, Geoff Clare wrote:
> Shware Systems <shwares...@aol.com> wrote, on 17 Apr 2019:
>> On Wednesday, April 17, 2019 Geoff Clare <g...@opengroup.org> wrote:
>>
>>> ... does anyone know of an implementation
>>> that has pthreads and C11/C17 threads, with pthread_t and thrd_t defined
>>> as different types?
>> My implementation defines both as pointers, not int's, as 'typedef
>> thrd_t pthread_t;'. Since threads.h is 99% a subset of pthreads.h,
>> I see no reason to have them be different types, even as a breaking
>> change. What is missing is in pthreads.h, to account for the new
>> attributes C11 introduced, at least to mention them if support
>> isn't going to be added.
> What new attributes? As far as I can see the only attribute a
> thread has in C17 (although it doesn't use that word) is whether it
> has been detached.
>
>> The major hassle I see is POSIX wants the
>> the threading stuff in libpthread, and C11 wants it in libc if the
>> threading option is enabled. IMO C11 should have let interfaces in
>> optional headers all be in header-specific libraries or libc, as an
>> implentation-defined choice, but they didn't.
> Last I knew the C standard says nothing at all about how programs
> are built.
Is there even a requirement to have libpthread in POSIX?
--joel
