Hello,
On Sat, Jan 29, 2005 at 06:34:19AM -0800, Noah Misch wrote:
> On Sat, Jan 29, 2005 at 03:03:53PM +0100, Alexandre Duret-Lutz wrote:
> > $ strace bash -c '{ foo; } 2>/dev/null' 2>&1 | grep clone
> > clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
> > child_tidptr=0xb7f93bc8) = 19138
...
> It indeed turns out that `bash' and the V7 Bourne shell fork in all three
> cases,
> `ash' and `pdksh' fork only in the first two, and `zsh' forks for none.
I had to use
$ strace bash -c '{ foo; } 2>/dev/null' 2>&1 | grep fork
with my Linux 2.4.x kernel.
But yes, this proves that "{ ...; }" has no advantage over "(exec ...)".
This also means that we don't need any benchmark from the Cygwin people.
(I apologize to cygwin subscribers.)
Thank you, Alexandr,
Stepan Kasal
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
