Re: [patch] thread-exec-2.5.34-B1, BK-curr

[Ingo Molnar]

On Sun, 15 Sep 2002, Linus Torvalds wrote:

> > i dont like those semantics either - will verify whether thread-specific
> > exec() works via a helper thread (or vfork) - it really should.
> 
> As long as it works with something sane (and vfork() is sane), I'm happy
> with the posix behaviour by default. [...]

yes - the default case is very similar to that: exec() works for a
1-member thread_group, otherwise i couldnt have booted the kernel.

> [...] After all, the execve() really _does_ need to "de-thread" anyway,
> and if we need to make that explicit (with the vfork()) then that's
> fine.

ok. libpthreads uses an internal clone() for posix_spawn() [which does
what your example illustrates] which should be a tad faster than vfork() -
but vfork() should work just as well.

	Ingo