[Python-3000] the future of the GIL

Josiah Carlson jcarlson at uci.edu
Thu May 10 05:38:49 CEST 2007

Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:
> Giovanni Bajo wrote:
> > using multiple processes cause some 
> > headaches with frozen distributions (PyInstaller, py2exe, etc.), like those 
> > usually found on Windows, specifically because Windows does not have fork().
> Isn't that just a problem with Windows generally? I don't
> see what the method of packaging has to do with it.
> Also, I've seen it suggested that there may actually be
> a way of doing something equivalent to a fork in Windows,
> even though it doesn't have a fork() system call as such.
> Does anyone know more about this?

Cygwin emulates fork() by creating a shared mmap, creating a new child
process, copying the contents of the parent process' memory to the child
process (after performing the proper allocations), then hacks up the
child process' call stack.

 - Josiah

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