std.process - POSIX specific callback

[Lars T. Kyllingstad]

On Monday, 10 June 2013 at 16:20:53 UTC, Steven Schveighoffer 
wrote:
> What I am thinking of is possibly to expose the OS-specific 
> spawnProcess implementation as an object with the API defined 
> by it, similar to how writeln simply forwards to 
> stdout.writeln.  We could have spawnProcess simply forward to 
> posixProcessImpl.spawnProcess (or 
> windowsProcessImpl.spawnProcess on windows)
>
> Then if someone wants to actually take advantage of OS-specific 
> features, they can call on the appropriate object.  It 
> shouldn't compile where it's not implemented (e.g. windows 
> spawnProcess shouldn't be callable on Linux).

Why should we add an object?  Why not expose the OS-specific 
spawnProcess() implementation as it is -- a free function -- with 
an additional parameter which specifies a callback delegate?

Can you think of any other places we'd want to hook besides 
post-fork-pre-exec?