I just killed GIL!!!

[sjdevnull at yahoo.com]

On Apr 18, 9:29 pm, sturlamolden <sturlamol... at yahoo.no> wrote:
> On 18 Apr, 21:28, "sjdevn... at yahoo.com" <sjdevn... at yahoo.com> wrote:
>
> > Passing a NULL SectionHandle to NTCreateProcess/CreateProcessEx
> > results in a fork-style copy-on-write duplicate of the current process.
>
> I know about NtCreateProcess and ZwCreateProcess, but they just create
> an empty process - no context, no thread(s), no DLLs loaded, etc.
> There is even an example code of how to implement fork() with
> ZwCreateProcess in Nebbet's book on NT kernel internals, but
> apparently it doesn't work quite well.

It works fine for a copy-on-write process creation.  It doesn't work
100% compatibly to fork.  Nebbet is the best reference out there on
the method.

FWIW, NT's POSIX subsytem fork() uses (or used to use) the NULL
SectionHandle method and was POSIX certified, so it's certainly
possible.

> Searching with Google, I find several claims that there is a
> "CreateProcessEx"

Yeah my bad, I meant zwCreateProcess.  It's been almost a decade now
since I used it.