Re: vfork revisited (was 64bit clean XEmacs)
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Georg Nikodym <georgn(a)canada.sun.com> writes:
When a UNIX process wants to create a child, it fork()s and exec()s.
The fork() duplicates the parent's address space. This was seen as
silly when 9 times out of 10 the child simply calls exec and thus was
born vfork().
Of course this is only a problem if you like Solaris don't COW those
pages and do not over commit.
Jan
Georg Nikodym
Wednesday, 4 November
Wed, 4 Nov
5:30 p.m.
New subject: vfork revisited (was 64bit clean XEmacs)
>>>> "JV" == Jan Vroonhof
<vroonhof(a)math.ethz.ch> writes:
JV> Georg Nikodym <georgn(a)canada.sun.com> writes:
> When a UNIX process wants to create a child, it fork()s and
> exec()s. The fork() duplicates the parent's address space. This
> was seen as silly when 9 times out of 10 the child simply calls
> exec and thus was born vfork().
JV> Of course this is only a problem if you like Solaris don't COW
Once again, whether the pages are COWed or not is irrelevant. (See my
response to Per)
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Georg Nikodym -
Jan Vroonhof