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Subject: Re: Native posix_spawn() in Cygwin?
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From: Dan Shelton via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Dan Shelton <dan DOT f DOT shelton AT gmail DOT com>
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On Tue, 27 Feb 2024 at 07:34, <gs-cygwin DOT com AT gluelogic DOT com> wrote:
>
> On Tue, Feb 27, 2024 at 06:54:42AM +0100, Dan Shelton via Cygwin wrote:
> > On Tue, 27 Feb 2024 at 06:47, Brian Inglis via Cygwin <cygwin AT cygwin DOT com> wrote:
> > >
> > > On 2024-02-26 20:23, Dan Shelton via Cygwin wrote:
> > > > Does Cygwin implement a native, i.e. without form(),exec(), implementation of posix_spawn()?
> > >
> > > Check the API compatibility docs online:
> > >
> > >         https://cygwin.com/cygwin-api/compatibility.html#std-susv4
> > >
> > > or optional locally installed package cygwin-doc:
> > >
> > >         /usr/share/doc/cygwin-doc/html/cygwin-api/compatibility.html#std-susv4
> >
> > That document does not answer my question.
> >
> > I know posix_spawn() is there. But the question is: Does it use just
> > Cygwin fork(),exec(), or the native Win32 spawn() api?
> >
> > Dan
> > --
> > Dan Shelton - Cluster Specialist Win/Lin/Bsd
>
> If you were going to make a small effort to answer the question
> yourself, you could use strace, you could step through a debugger, or
> you could check the source code.  Have you tried any of these?  What did
> you find?  If you are unable to take any of those steps, why does
> posix_spawn() matter to you?

strace does not help, as I need the Win32 calls BELOW posix_spawn(),
to see the implementation details.

Dan
-- 
Dan Shelton - Cluster Specialist Win/Lin/Bsd

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