Re: Change pid_t base type

On 08/01/2018 09:22 AM, Joel Sherrill wrote:
> http://pubs.opengroup.org/onlinepubs/009696699/basedefs/sys/types.h.html
> 
> Says pid_t can be no larger than long if I am reading that correctly.

"The implementation shall support one or more programming environments 
in which the widths of blksize_t, pid_t, size_t, ssize_t, suseconds_t, 
and useconds_t are no greater than the width of type long. The names of 
these programming environments can be obtained using the confstr() 
function or the getconf utility."

> 
> Is POSIX a concern? Or is long 64-bits on all your targets?

If long is 32 bits, do you support two separate compilation environments 
(one for POSIX with 32-bit pid_t, the other for full 64-bit pid_t)?

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Eric Blake, Principal Software Engineer
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